Vaahto Pulp & Paper Machinery
focuses on service
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Erection completed succesfully in
Pinghu Mill
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Rauma PM 4 LWC-machine back
in top speed after Vaahto´s repairs
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Vaahto rectifier roll headbox running
succesfully at Kaukopää BM 4
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Certificates are the cornerstones of
Vaahto´s quality management
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Content 2010
Group News 2010
Boost your production –
Vaahto on-site services
Vaahto Service provides competent and reliable ON-SITE services for various paper machine sec-tions. Vaahto’s ON-SITE services utilize process ex-perts who help to ensure the quality of services and thus the benefits for the customer.
V
aahto Pulp & Paper Machinery has been a reliable supplier for tissue mills in Nordic Europe in the field of services including roll covers, roll rebuilds and other roll services. SCA Lilla Edet Mill in Sweden and Georgia-Pacific Nokia Mill in Finland are good examples of customers, which have for years been served by Vaahto. More recently also Russian tissue makers have taken advantage of Vaahto roll service capabilities.During recent years there have been numerous inquiries from tissue mak-ers whether Vaahto would also offer bigger projects for tissue machines. Due to this increasing interest towards Vaahto´s high quality technology amongst the tissue producers Vaahto made a decision to widen its business-es for new tissue machinbusiness-es and major rebuilds. “As a natural continuum of our long term cooperation with tissue makers and Vaahto’s strong position as a high quality technology provider in paper industry it was a logical step for us to expand our operations into en-tire tissue machines”, says Juha Luhta-lampi, head of Vaahto’s Tissue Paper Machine Business. Vaahto tissue ma-chine concept was developed based on proven Vaahto technology in key components like headboxes, forming sections, press sections and reels.
Metsä Tissue selected
Vaahto as a supplier for
major rebuild
After serious discussions and negoti-ations Metsä Tissue selected Vaahto Pulp & Paper Machinery to rebuild its tissue paper machine at Mänttä Mill, Finland. The machine produces toi-let and towel base paper for consumer products marketed under the brands Lambi, Serla and Katrin.
Vaahto Tissue Concept
Vaahto Pulp and Paper Machinery of-fers tailored tissue machine rebuilds and new machines based on proven Vaahto technology and project com-petence for all markets worldwide. The extensive Vaahto Tissue Machine Concept offers reliable and function-al solutions for function-all the needs of tis-sue paper manufacturers. In new ma-chines special attention has been paid to developing viable small and medi-um size machines especially suited for
the needs of emerging markets such as Vaahto Tissue Machines TMS 70 and TMF 90 (capacity tones/day). The Vaahto Tissue Machine Range of-fers customers the opportunity to en-ter new markets at a lower invest-ment cost. Less capital is tied up, as the output of the machine can be op-timized to suit the specific needs of each regional market area. This makes the Vaahto Tissue Machine an excel-lent choice for both newcomers and
established tissue- makers entering new geographical market areas. All Vaahto tissue paper machines are designed to produce tissue paper with furnishes from 100% virgin fibre to 100% deinked pulp and grammag-es from 12 g/m2 to 45 g/m2 (at reel).
Vaahto tissue paper machines are nor-mally designed with one press roll, but double press and Vaahto shoe press solutions are also available.
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VaahTO’S BIGGEST EVER TISSUE
MaChINE SUPPLY STaRTS UP
TMF 90
TMS 70
Metsä Tissue is a leading tissue paper products supplier to households and large-scale consumers in Europe and the world’s leading supplier of baking and cooking paper products. Com-pany’s main brands are Lambi, Serla, Mola, Tento, Katrin, Fasa-na and SAGA, which are produced in Finland, Germany, Poland, Russia, Slovakia and Sweden. Metsä Tissue, a part of the Met-säliitto Group, employs some 3150 people, and had a turnover of 890 million euros in 2009.
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Group News 2010“This merger will give our customers a more
extensive and wider product range from one organization under
one Vaahto brand.”
A
s a result of determination and hard work, Vaahto Group has achieved solid recognition as an international high-tech company. However, last fiscal year was a difficult one for Vaahto Group. The financial crisis since fall of 2008 has caused havoc for the global economy, and our operating environment has changed very rapidly. We have been forced to adjust our operations to the weakened market situation and carry out drastic measures to maintain our competitiveness.Operations of the Vaahto Pulp & Paper Machinery Divi-sion were simplified and rearranged, resulting in two busi-ness units, Vaahto Projects and Vaahto Service. Vaahto Projects masters extensive pulp, paper, and board machine deliveries and modernization projects. Vaahto Service fo-cuses on components, on-site services and roll servicing. During the implementation period of first 12 months the focus has been more and more on Service side. Our prod-uct selection has been expanded to cover new prodprod-uct ar-eas, such as demanding polyurethane and composite roll covers as well as new on-site maintenance services.
We have also initiated a development project to estab-lish a production unit as part of the Pulp & Paper Machin-ery division in China. According to the objective set, this production unit is targeted to start operations during the 2010–2011 fiscal year.
In the Process Machinery division, we have gained strength especially in the agitator technology expertise and have solidified the position in the growing energy sector,
V
aahto Pulp & Paper Machinery has become an established and reliable supplier in the demanding international paper and board machine markets, and our innovative and cost-efficient solutions are valued by customers. Recently Vaahto project operations expanded to large-scale tissue-paper technology, as you can read on the front page. The combination of traditional Vaahto rebuilds of board machines and role as a key component supplier to printing writing paper machines guarantee the very wide base of knowledge and expertise of Vaahto personnel which our customers benefit from.The knowledge and expertise from capital projects forms the platform, that Vaahto Pulp & Paper Machin-ery needs in in-depth service operation from roll covers to on-site services. Changes in the paper industry and minimum investments in new capacity or better qual-ity, force Vaahto to seek growth in Service operations. The outsourcing trend in the paper industry has also strengthened demand of all kind of services previously
PULP & PaPER MaChINERY fOCUSES ON SERVICE
provided by paper mills themselves. In addition to Service, Vaahto Pulp & Paper Machinery sees great possibilities for growth also in Chi-nese capital projects. The develop-ment of Chinese paper and board industry has been amazing, and we cannot see any end in the demand at the moment. Vaahto has recent-ly started up three headboxed and top-former at Jinxing Pinghu mill and collected an order for Gypsum board machine headboxes. The set of 4 modern headboxed, which will be manufactured in Hollola Fin-land, indicate Vaahto´s position as one the most productive suppliers globally.
In spite of tough times, Vaahto has systematically invested in new
products and services. In the run of latter part of 2010, Vaahto will launch to the market new products and services. For example On-Site services for yankee cylinder coat-ing or winder drum tungsten-car-bide thermal spraying will be avail-able in the near future.
All in all, Vaahto will focus in growth of Service, but will remain as reliable rebuilder of paper and board machines, as well as key com-ponent supplier to new machines especially in China, Russia and oth-er emoth-erging markets.
Jyrki Strengell
Managing Director of Vaahto Ltd
for example. The Process Machinery division has a larg-er customlarg-er base on various fields of industries, and the market recovery is expected to happen a little earlier than on Vaahto Pulp & Paper Machinery side.
All in all the market situation will remain challeng-ing. Our order book is getting thicker, but it is still clear-ly lower than before the financial crisis in 2008. We can, however, detect signs of normalizing markets, so we ex-pect the market situation to pick up in the latter half of year 2010.
In this challenging operating environment, we are placing particular emphasis on proce-dures that will improve Vaahto Group’s com-petitiveness, profitability, and solidity. Our highly competent personnel will be key to our success with regard to this objective, and I trust our employees will also be excellent partners to our customers in these challenging times.
aNSSI kLINGa
CE0, Vaahto Group Plc Oyj:
”
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Group News 2010
ERECTION COMPLETED
SUCCESSfULLY IN PINGhU MILL
Z
hejiang Jingxing Paper Joint Stock Co. (Pinghu Mill), Ltd in Zhejiang province of China is in the fi-nal stages of a busy PM 13 White Top Liner machine project. Key components of the machine like head-boxes and a Top-Former have been manufactured by Vaahto in Finland. The bottom layer headbox is equipped with the state-of-the-art Vaahto dilution control system for reliable CD-profile control.Vaahto Site Manager Tommi Vuorio worked sever-al weeks on site in Pinghu, which is located about two
RaUMa PM 4 LWC-MaChINE BaCk IN
TOP SPEED afTER VaahTO´S REPaIRS
STORa ENSO INGEROIS BM 4
MODERNIZED BY VaahTO
The project includes a new Vaahto Crescent former, Vaahto HQT headbox, and conventional Vaahto reel. The delivery also includes rebuild of the short circula-tion, the press section with new framing and suction press rolls, as well as the automation system. All press section and reel loadings were upgraded from pneumatic into hydraulic for better controllability. Installation, training, and start-up services were also a significant part of the project.
The aim of these types of projects is to achieve better pa-per quality (especially formation), to improve papa-per ma-chine runnability and to minimize broke. “Vaahto HQT tissue machine headbox is a good example of how prov-en Vaahto technology can be used in tissue machines in or-der to achieve these targets. The design of the HQT Cres-cent former headbox has been based on the highly patent-ed structure of our very successful hydraulic HQ headbox series. We have been able to maintain the same distribu-tion channel, equalizing chamber and turbulence genera-tor structure in the Crescent former HQT headbox design as we have already successfully used in our HQ series head-boxes for several years.
In our HQT Crescent former headbox we have developed the design further so that the apron lip can be moved hor-izontally. This is a good addition in cap former headbox design, ensuring effective adjustment of the jet and giving short free jet length. All this ensures that the Vaahto HQT headbox produces good sheet formation and good CD pro-files, which then later enables uniform coating on the Yan-kee cylinder and through this good paper machine runna-bility and good paper quality,” says Juha Luhtalampi.
“In addition to Vaahto’s high technical level of the key components the company’s solid experience in handling in-ternational projects was a key factor in securing this Metsä Tissue order”, continues Luhtalampi. ■
U
PM Rauma PM 4 is the larg-est and newlarg-est of Finnish pa-per machines. The start-up of the giant LWC-machine took place in January 1998, and since then the 9,8-m-wide monster has been one of the most productive paper ma-chines globally.In 2009 the market situation of coated mechanical grades sudden-ly turned very bad, and UPM decid-ed to utilize the downtime by order-ing a proper maintenance and re-build for the headbox of the gap-former machine. After tough nego-tiations UPM decided to award the job to Vaahto Pulp & Paper Ma-chinery.
Vaahto dismantled the headbox, produced new parts, re-machined some of the components and final-ly re-assembled the headbox after 10 days of intensive work. Start-up services were part of Vaahto´s scope in the project. After the Easter holidays PM 4 was again up and running and very soon it could reach top speeds of 1900 m/min,
which had not been the running level in a long time. A spokesman for Rauma mill says, that Vaahto fully met the expectations set pri-or to the shutdown. Vaahto is well known at the Rauma mill mainly on the service side as Vaahto also supplies rubber covers and poly-urethane covers to various posi-tions of all four machines in
Rau-ma. Vaahto has the capability to handle even the largest suction rolls up to 80 tons weight and 10 m width in its Tampere Service work-shop. In machine rebuilds Rauma had had a tendency to select sup-pliers having experience in exact-ly identical machines. With the PM 4 headbox project Vaahto gained a position among the big boys. ■
Field Installation Superintendent Tommi Vuorio explains the status of Vaahto´s headbox installation to Jyrki Ovaska, President, UPM Paper Business Group and UPM Rauma Mill Manager Kari Pasanen.
Parts of the massive headbox were machined at Vaahto’s Hollola workshop.
S
tora Enso Ingerois BM 4 is one of the board machines Vaahto engineering team knows extremely well. The folding box board mill located at the banks of the Kymi river in the south eastern Finland, was part of Tampella corporation until 1993. Tapio Rajantaus and many of his colleagues nowadays serving Vaahto Pulp & Paper Machinery worked as well for Tampella but other division, namely Tampella Papertech in Tampere, when Ingerois BM 4 was properly rebuilt in 1990. The IKU project turned the recycled fiber based white-line-chip board machine into a high quality folding boxboard line and increased capacity significantly. IKU-09 was a first major upgrade of the machine in 19 years. Tapio Rajantaus with his team - this time Vaahto name in the back of the working uniform - was happy to re-enter Ingerois mill.The Tampella made middle layer headbox was equipped with a state-of-the art dilution control system resulting in more than 50 % better CD profiles of the web. Naturally better profiles mean less waste, higher production speed and bet-ter overall appearance of the sheet. Operators are very pleased with dilution tools and asked Vaahto team: “Why didn´t you sell this much earlier! This is really a tool we have been missing for years!”
The pope reel of the line was entirely modernized to meet 3,2-meter-diameter tambour production and winder unwind stand was rebuilt respectively. Vaahto´s delivery also included a water-jet turn-up device, which has showed its power by reducing bottom broke. Larger parent reels reduce number of tambour chang-es rchang-esulting in more effective work in the finishing end and lchang-ess wasted material. Ingerois BM 4 is 5100 mm wide and is designed for max. speed 750 m/min. The annual output of the mill is around 200 000 tons coated board. ■
Existing headboxes can be upgraded cost effectively by installing a Vaahto state-of-the-art dilution control system which enables better web CD profiles.
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During this project Mr. Yang Yujun Project Engineer of Jingxing Pinghu has worked in close co-operation with Vaahto Site Manager Tommi Vuorio and Wangen Ni from Vaahto Shanghai office.
Vaahto headboxes have found their niche at the Chinese market. Four brand new HQZ-versions will be delivered to Taishan Gypsum Co. Ltd. to Shandong Province in China in 2010/2011.
hours drive from Shanghai City cen-tre. He comments: “The Chinese craftsmen are easy to deal with and they are very keen on learn-ing new thlearn-ings. The installation of Vaahto equipment was very smooth and quick due to very careful pre-assembly at Vaahto´s workshop in Hollola.” In general Vaahto ensures its’ project quality by always testing
and preassembling all key compo-nents prior to delivery to customers. In 2009 Chinese economy grew by 8.5% and the outlook for the year 2010 is expected to be at the same level or even better. Pack-aging board industry in China has been growing steadily as domes-tic demand is playing increasingly big role. ■
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Group News 2010a MaSSIVE VaahTO RECTIfIER ROLL hEaDBOX
RUNNING SUCCESSfULLY aT kaUkOPÄÄ BM 4
S
tora Enso Imatra Millscontinued ordering headboxes from Vaahto - 4th Vaahto headbox project within a short period. This time the dilution control system equipped version Vaahto HQRC headbox was delivered for the Kaukopää BM 4 in late 2009. The machine produces liquid packaging boards 170-420 g/m2 at wire width
6782 mm and design speed of 750 m/ min.
As part of this project Vaahto mod-ified an old Valmet middle ply head-box by changing its handedness and placing it on the top ply. Vaahto’s de-livery also included equipment for the pick-up roll as well as upgrade of the 1st press nip.
The Vaahto headbox is working well and project targets like quality im-provements in formation and smooth-ness were met. Vaahto achieved this by combining its new generation rec-tifier roll technology with the ad-vanced dilution control system. Easier tail threading and better runnability of lighter grades was achieved by the up-grade of the pick-up roll.
“Our installation work went very well,” says Vaahto Project Manag-er Tapio Rajantaus. “We received ex-tremely positive feedback from the customer as we were able to finish two days ahead of schedule,” com-pletes Rajantaus. ■
Part of the customer training was held in connection with Vaahto workshop visit in Hollola.
Kaukopää project personnel were interested in the progress of the headbox preassembly. All Vaahto headboxes are preassembled and tested at the workshop to ensure “plug-and-play” –status at cus-tomer mill site.
NEW INTELLIGENT 3D POWERGRIND SERVICE
fOR YaNkEE CYLINDERS PROfILE GRINDING
V
aahto introduces the new, intelligent 3D POWERGRIND grinding service product to its ON-SITE roll grinding. The development work of the technology focused especially on a technical solution which allows for quick, efficient grind-ing of roll profiles with machine workshop accuracy. The ac-curacy of the roll’s profile shape affects the operating of the roll and coating and thus the runnability of the machine and paper quality. The grinding equipment is quick to install in a paper machine environment and it is capable of efficient material removal, minimizing the grinding time and thus the downtime of the machine. The 3D POWERGRIND service is especially targeted at the maintenance grinding of Yankee cylinders but it can also be applied in other roll positions when needed. Significant R&D resources have been invest-ed in the development of the new-generation ON-SITEgrind-ing technology. Tekes (Finnish Fundgrind-ing Agency for Technolo-gy and Innovation), Aalto University’s School of Science and Technology and RollResearch Int. Oy are Vaahto’s co-opera-tion partners in this development work.
3D POwergrinD profile grinding technology
The 3D POWERGRIND profile grinding technology is based on the state-of-the-art 3D grinding control technology used in roll grinding machines in machine workshops. The instal-lation, mechanics and grinding environment can cause align-ment error in the grinding unit in relation to the roll requiring grinding. This does not, however, affect the targeted grind-ing accuracy as the new grindgrind-ing technology incorporates a measuring system which measures the roll’s run-out, shape and the movement of the grinding unit in the grinding
direc-tion. A grinding control curve is drawn up according to the attained measurements, based on which the grinding unit is moved in the direction of the roll’s surface radius during the grinding process in order to grind the required profile shape on the roll’s surface. The grinding control curve contains da-ta on the required roll profile shape as well as the compensa-tion of the errors resulting from the guide error and grinding environment. This speeds up the installation of the grinding equipment in the machine as the guide can be lightly built and does not need to be “completely” straight in relation to the roll. Thanks to the intelligent 3D POWERGRIND profile grinding technology, the profile grinding of the roll is pre-cise, quick and efficient, enabling machine workshop accu-racy in profile grinding while minimizing downtime required by maintenance grinding. ■
Yankee cylinder shape profile measurement. 3D POWERGRIND grinding equipment concept drawing.
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Group News 2010
Vaahto Service provides competent and reliable On-SiTe
services for various paper machine sections. Vaahto’s
On-SiTe services utilize process experts who help to
ensure the quality of services and thus the benefits for
the customer. On-SiTe services provided by Vaahto
are usually related to improving paper quality,
problem-solving, regular maintenance or increasing production
line speed.
carbide coating for drive rolls and reel drums. A significant research and de-velopment project is also taking place at Vaahto in which a thermal spraying coating for covering Yankee cylinders is being developed. ■
with paper machine speed increase projects. Vaahto also offers the nec-essary maintenance, repair and mod-ernization services for solving vibra-tion problems.
On-site servicing
Vaahto Service’s ON-SITE servic-ing ensure that your paper machine equipment and components continue to function flawlessly. We can monitor the equipment’s service history, based on which we, together with the client, can plan future maintenance meas-ures. Regular maintenance ensures that the technology continues to func-tion impeccably over the course of the next planned maintenance interval. The regular and systematic mainte-nance of equipment and components saves money in the long run because it helps to guarantee the high usability of the paper machine line and elimi-nates unnecessary and unexpected web breaks and downtime.
Vaahto Servicing offers versatile maintenance services for various pa-per machine parts. Areas requiring maintenance in the short circulation and wire section include the screen, pulper and headbox. Vaahto’s head-box maintenance takes place in two stages, including monitoring of the process while the machine is running and mechanical maintenance during
downtime. Vaahto has its own main-tenance service products for the regu-lar maintenance of shoes presses, siz-ers and reels. Other mechanical main-tenance areas include doctors, stretch-ers and guides.
Analysis and optimisation servic-es can be performed simultaneous-ly with the mechanical maintenance, providing information on possible process malfunctions or a function-al defect in the equipment. The me-chanical maintenance can then be ad-justed so that the process malfunc-tion or funcmalfunc-tional defect in the equip-ment can be repaired in connection with the equipment maintenance. The mechanical maintenance can include other measures such as crack checks, contamination prevention treatment, balancing or alignment.
On-site grinding and
thermal spraying
Vaahto Service also supplies on-site grinding and thermal spraying of rolls. The maintenance grinding can either consist of polishing-type grind-ing or profile grindgrind-ing, which can al-ter the roll’s profile into the required profile shape. Vaahto has invested sig-nificant research and development re-sources in the development of new-generation ON-SITE grinding tech-nology, as a result of which the com-pany is introducing the new, intelli-gent 3D-POWERGRIND grinding service product to the market. The development of the technology has es-pecially focused on a technical solu-tion which allows for quick, efficient on-site grinding of roll profiles with machine workshop accuracy. The main intended implementation of the technology is the maintenance grind-ing of Yankee cylinders, but it can al-so be used for the ON-SITE grinding of other cylinders such as drying cyl-inders.
Vaahto has several types of thermal spraying coatings which can also be performed ON-SITE. These include, for example, the VRS-CARBIDE D release coating for drying cylinders as well as the VRS-CARBIDE wolfram
Analysis and optimisation
services
Vaahto Service ensures secure and re-liable process information as well as the correct repair measures through comprehensive service, which in-cludes process analysis and optimi-sation, recommendations for the re-quired service and maintenance meas-ures as well as the implementation of these measures. Information and so-lutions produced through the servic-es can be used in decision-making volving modernizations and new in-vestments.
Vaahto’s analysis and optimisation services for the short circulation, headbox and wire section area make it possible to efficiently and reliably rec-ognize malfunctions in the process as well as improve paper quality and ma-chine runnability. The services can as-sist in working out the following prob-lems, for example:
BOOST YOUR PRODUCTION –
VaahTO ON-SITE SERVICES
• machine direction basis weight variation • problems with the basis weight cross profile • fibre orientation problems
• edge problems • formation problems
• control of the CD/MD strength ratio • water drainage problems
Based on the results of the analy-sis, suitable solutions can be offered for the client’s problem, whether it be service or maintenance measures or more comprehensive modernizations.
Vaahto’s mechanical condition analysis can be directed at either the entire paper machine or simply the chosen areas of the machine, such as the wire or press section. The me-chanical condition analysis can in-clude a nip profile analysis which re-veals how the press nip operates in practice. The condition analysis helps to discover the mechanical condition of the machine and the required re-building, maintenance and repair measures. The implementation of the measures is always agreed upon sepa-rately as their extensiveness varies sig-nificantly depending on the case.
Excessive vibrations typically take place in paper machines and can cause mechanical damage. Also the significance of the rolls’ dynamic be-haviour is emphasized as the speeds of both new and old paper machines are increased. Vaahto Service, togeth-er with its co-optogeth-eration partntogeth-ers, sup-plies diverse vibration analysis serv-ices to uncover hidden mechanical damage and the reasons for the vibra-tions, as well as to estimate the ma-chine’s vibration behaviour at high-er speeds, for example in conjunction
Roll natural frequency measurements are conducted by Vaahto Service professionals.
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Group News 2010VaahTO ESTaBLIShES POSITION aS
POLYUREThaNE aND COMPOSITE
ROLL COVER SUPPLIER
Vaahto Oy, Service has recently launched several improved roll cover
products to further reinforce its product range and has actively been
promoting them to new and existing customers in Finland and abroad. new
products have been accepted very well and have become new cornerstones
for Vaahto’s service business. Most of the new launches are aimed at
positions and applications where Vaahto has not previously had a full offering
and therefore reinforce our position as a competitive roll cover supplier.
V
aahto News has reported the sta-tus and progress of Polyurethane and Composite roll cover project in our Tampere service center in pre-vious issues. Several new prod-uct launches have emerged from it, like VRS-POLYTAM and VRS-POLY-DRIVE reel spool and drive roll cov-ers. These products have received excellent reception from the market-place and over 50 covers have al-ready been delivered to customers all over the world.Our latest PU-product launch, VRS-POLYPRESS can be applied to all press section applications, po-sitions, speeds and loading condi-tions. This cover is offered in 5-25 PJ hardness range. Plain, grooved and blind drilled press rolls have been de-livered to various customers. In the next wave suction rolls will be sup-plied. An interesting new application for VRS-POLYPRESS is LNP-press roll, where polyurethane cover al-lows removal of the roll internal cool-ing water circulation offercool-ing cost savings to customers. This, in addi-tion to improved wear resistance and very low internal heat buildup allow-ing high loadallow-ings, makes VRS-POLY-PRESS a very interesting cover alter-native in this application over tradi-tional rubber covers. Vaahto Serv-ice has already made several deliv-eries, both plain and blind drilled and
based on the repeated orders re-ceived this new cover has been well accepted in the marketplace.
First new composite calender cov-ers from VRS-COMCAL product fam-ily have also been delivered to cus-tomers. Development targets for VRS-COMCAL have been high tem-perature and excellent wear resist-ance and toughness to perform in hardest calendering positions. VRS-COMCAL has a hardness range of 88-92 ShD and it is an excellent choice for all super and soft calend-er applications. VRS-COMCAL has standard thickness of 12,5-15 mm and the material can resist contin-uous surface temperatures up to 135 °C.
Our rubber cover selection has also received a couple of new innovative additions. VRS-SIZEHYDRIL utilizes the same basic structure than VRS-SIZER, but the rubber material has been upgraded to HNBR-based, of-fering significantly improved thermal and wear properties. Another HNBR-based cover innovation is VRS-COAT-EHYDRIL, which is aimed to those coating applications that suffer from too high wear rate of the standard rub-ber covers. New VRS-COATEHYDRIL material has much better mechan-ical properties like tear resistance (+62,8 %), tensile strength (+29,5 %) and elongation (+52,7 %) over
stand-PRODUCT NAME COVER TYPE APPLICATIONS
VRS-POLYTAM Polyurethane Reel spools, extreme wear and cut resistance VRS-POLYDRIVE Polyurethane All drive positions, also W version for wet applications VRS-POLYPRESS Polyurethane All press section applications, including suction rolls VRS-COMCAL Composite All calendering applications
VRS-COMGUIDE Composite All lead roll applications, excellent wear and doctoring
VRS-SIZEHYDRIL Rubber All sizer applications, excellent wear and temperature resistance VRS-COATEHYDRIL Rubber Coater application rolls for all different types of coating units VRS-CERAM W Thermally
Sprayed Center press rolls especially wood containing grades like News, LWC, SC. Shoe press mating rolls. VRS-CERAM L Thermally
Sprayed Lead rolls needing excellent cleanability and wear resistance. VRS-CARBIDE D Thermally
Sprayed Lead rolls, spreading rolls, drying cylinders. Combination coating of wear resistant carbide+ DYREL fluoropolymer surface treatment
ard VRS-COATER LC cover. Wear re-sistance, which is often critical for this application has been improved by 51 %. This is good news for our custom-ers that try to improve coater section operation economy and reduce cover grinding costs. VRS-COATEHYDRIL is also an excellent solution to those mills where the transfer to coated ap-plication blades has resulted in ex-cessive roll cover wear rate.
Thermally sprayed VRS-CER-AM center roll cover has also had a new option added with the launch of VRS-CERAM W. This new cover uti-lizes the same reliable corrosion pro-tection base layer and sealing treat-ment as VRS-CERAM, but the oper-ational layer material has been modi-fied in order to further improve oper-ation with wood containing and high filler content paper grades like News, SC and LWC. VRS-CERAM fami-ly will also have a third option avail-able in the near future. VRS-CERAM L is a lead roll cover with extreme-ly high wear resistance and excel-lent doctorability. VRS-CERAM L is hydrophilic resisting dirt pick-up, but can also be mechanically cleaned to remove possible coating residue and other impurities. VRS-CARBIDE D is Vaahto’s new thermally sprayed cov-er product for lead rolls, spreading rolls and drying cylinders. It is a com-bination coating of tungsten carbide
and DYREL fluoropol-ymer offering cleanli-ness and chemical re-sistance similar to sin-tered PTFE/FEP mate-rials, but improved doc-torability and high tem-perature hardness. In order to facilitate the use of VRS-CARBIDE D for e.g. drying cylinders, VRS-CARBIDE D can also be manufactured on-site. ■
Recent Vaahto Oy, Service roll cover product launches
Custom engineering and contract manufacturing services for various uses and industries from AP-Tela.
aP-TELa WORkShOP
REaDY TO SERVE!
A
P-Tela Oy, a Kokkola-based subsidiary of Vaahto Group, is a provider of heavy custom engineering and contract manufacturing services. The company specializes in the manufacturing of long, welded and machined, axially symmetrical parts.“During the winter months we have done significant main-tenance and modernization jobs in the workshop,” says Manag-ing Director Pekka Viitasalo. “For example, we are now able to do inner turning from diam-eter 300 mm instead of previous limitation 550 mm”.
Viitasalo continues: “Now our machinery and equipment is in top shape and able to meet all kinds of challenges. We can produce high quality products and we are ready to offer our expertise. Don’t hesitate to ask how we can serve you!”
AP-Tela’s workshop in Kok-kola is very flexible and can serve a diverse range of custom-ers. “The paper industry is our major client, but we have done many projects for the energy, lifting equipment and process industries as well,” concludes Viitasalo. ■
ThE MaIN PRODUCTS Of aP-TELa WORkShOP
❑ Heavy, welded, thick-walled steel pipes, cylinders, and cones
❑ Rolls for the paper, energy, and lifting equipment industries
❑ Welded and machined steel structures
PIPE MaNUfaCTURING DIMENSIONS
❑ Diameter: freely selectable within the range 320–2,000 mm
❑ Material thickness: up to 70 mm
❑ Maximum length without round seams: 12 m
❑ Straightness: 0.5 mm/m (max. 3 mm)
❑ D: +/-2 mm; L: +/-5 mm
ROLL MaNUfaCTURING DIMENSIONS
❑ Maximum diameter: 2,000 mm; maximum turning span: 15 m; maximum weight: 40 metric tons
❑ Dynamic balancing: 2,500 m/min; balancing class: Q = 1–2.5
rolling pressure
Max strength 3000 tn Max length 12000 mm
Annealing (heat treatment)
Max diameter 2500 mm Max length 11500 mm Max weight 40000 kg reaming 900 mm x 2500 mm x 10100 mm Turning Max diameter 2400 mm Max length 14400 mm Max weight 40000 kg
MaIN MaChINE INfORMaTION
inner turning Min/max diameter 300/1500 mm Max length 10600 mm Grinding Max diameter 1830 mm Max length 10500 mm Balancing Max diameter 3100 mm Max length 14600 mm Max weight 40000 kg
Vaahto Service supplied Enocell’s LNP-press roll with its VRS-POLY-PRESS PU-cover.
7
Group News 2010
CERTIfICaTES aRE ThE CORNERSTONES
Of VaahTO´S QUaLITY MaNaGEMENT
i
n spite of tough times and thinorder books, Vaahto Group has systematically kept quality management systems in good shape. During the last 12 months, Vaahto´s units have been audited by Inspecta Certifications Oy at Pietarsaari, Kokkola and Hollola. “ We are very pleased to state, that all Vaahto Group units have taken quality work very seriously and there are only very few remarks needing corrective actions, requested by auditors”, says Vesapekka Karhi Vice President, Quality and Development. “ISO 9001 seems really to be part of everyday work and is thus an integral part of Vaahto operations. Vaahto´s
Vesapekka Karhi appointed Vaahto
Group’s Vice President, Quality
V
aahto Group announced in an appointment release 9.2.2010 that Ve-sapekka Karhi has been appointed Vice President, Quality of Vaahto Group from February 1, 2010. At this duty he reports to Anssi Klinga, CEO of Vaahto Group Plc Oyj. Karhi will further continue as Vice President, Quality and Development of Vaahto Ltd. ■Audited by Inspecta Certification Oy:
• ISO 9001 and ISO 3834 Vaahto Oy, Japrotek Oy Ab and AP-Tela Oy • ISO 14001 Vaahto Oy Tampere
Audited by CSEI
(China Special Equipment Inspection & Research Centre)
• China License, Japrotek Oy Ab • China License, Vaahto Oy
Latest Quality News
Chinese quality authorities r
enewed Vaahto’s pressure vessel manufacture license.
The head of the Chinese inspection team, Mr. Liu Deyu lead auditing at Vaahto Group’s Hollola workshop. His counterpart on Vaahto’s side was Vaahto Group’s Vice President, Quality, Mr. Vesapekka Karhi.
Vaahto arranged together with local authorities an event targeting to increase readiness in cases of fire or chemical leakages or other dangerous situations. Jukka Katila from Vaahto takes his new skills into action.
New Web Pages
Out Now at
www.vaahtogroup.fi
customers confirmed the high quality of operations in a recent customer satisfaction survey”, concludes the happy head of Quality.
Traditionally Vaahto Group has been known as a pressure vessel sup-plier for demanding application in-cluding equipment for nuclear pow-er plants. China Special Equipment Inspection & Research Centre audit-ed the pressure vessel manufacturing at the Group’s Pietarsaari and Hollo-la workshops in the autumn of 2009. The audit proves that both units are superior pressure vessel suppliers ac-cording to Chinese standards.
Environmental issues have a grow-ing importance among Vaahto´s
cus-tomers. ISO 14001 specifies with-in Vaahto the actual requirements for an environmental management system. It applies to those environ-mental aspects which organizations have control in and over which it can be expected to have an influ-ence. Inspecta Certification Oy au-dited Vaahto´s ISO 14001 in ear-ly February and confirmed that the company´s environmental issues are under good control.
Quality management cannot rely on auditing only, regular training is needed, too. As part of this system-atic process class room training is a part of Vaahto´s way of taking care of quality. ■
8
Group News 2010Vaahto Group Plc Oyj
Laiturikatu 2, P.O. Box 5, FI-15141 Lahti, FINLAND Tel: +358 20 1880 511, Fax: +358 20 1880 301 E-mail: [email protected]
Vaahto Ltd, Projects
Ahlmanintie 56, P.O.BOX 520 FI-33101 Tampere, FINLAND
Tel +358 20 188 051, Fax +358 20 188 0776 E-mail: [email protected] E-mail: [email protected]
Vaahto Ltd, Service
Kuoppamäentie 5 - 7, P.O.BOX 838 FI-33101 Tampere, FINLAND
Tel +358 20 188 0700, Fax +358 20 188 0701 E-mail: [email protected] E-mail: [email protected]
Japrotek Oy Ab
Pohjantie 9
P.O. Box 12, FI-68601 Pietarsaari, FINLAND Tel: +358 20 1880 511, Fax: +358 20 1880 415 E-mail: [email protected] E-mail: [email protected]
Vaahto Pulp & Paper Machinery Distribution (Shanghai) Co., Ltd
Room 1703, Tower 1, Plaza Hyundai, 369 Xian Xia Road Shanghai 200336, P.R. CHINA
Tel: + 86 21 5155 9151, Fax: +86 21 51559153 E-mail: [email protected]
Vaahto Ltd, Projects & Service
Vanha Messiläntie 6, P.O.BOX 1000 FI-15861 Hollola, FINLAND
Tel +358 20 188 0511, Fax +358 20 188 0290 E-mail: [email protected] www.vaahtogroup.fi
AP-Tela Oy
Ahertajantie 18 FI-67800 Kokkola, FINLAND
Tel: +358 20 1880 650, Fax: +358 20 1880 660 E-mail: [email protected] E-mail: [email protected]
Stelzer Rührtechnik International GmbH
Speckgraben 20
P.O. Box 14, 53 D-34404 Warburg, GERMANY Tel: +49 5641 903-0, Fax: +49 5641 903-50 E-mail: [email protected] E-mail: [email protected] www.stelzer-mt.com
ZAO SLALOM
196191 St. Petersburg
Constitution sq., bld.7, office 626 RUSSIA Tel. +7(812) 974 80 10, Tel./fax +7(812) 676 03 24 E-mail: [email protected]
E-mail: [email protected]
ONE WORLD - JOINT RESOURCES
V
aahto is a global high tech company and needs various experts to succeed in providing customers with results. Over the years Vaahto has taken an active role in co-operation with several education institutions providing their students with places for practical training, research themes, graduate thesis and works. Students from various fields from business administration, accounting, welding, and engineering have experienced working in reality at Vaahto. One of the latest international additions to the team was 22-year-old Turkish engineering student Tuncay Gurcan.Tuncay, an enthusiastic Istanbul native spent 10 weeks at Vaahto’s Hollola workshop as part of his prac-tical training for the final year of his 4 year bachelor’s degree majoring in construction and production divi-sion. We’ll let Tuncay tell you more about his experience at Vaahto.
On my way to Vaahto
The journey that lead me to Finland began in 2005, when I passed an OSS exam (Turkish University entry ex-am) and began my studies at the Su-leyman Demirel University’s Depart-ment of Mechanical Engineering. Having been interested in an interna-tional career I first ventured abroad in 2008 when I attended UPV (Uni-versity Politecnica de Valencia/Spain) for 6 months as an Erasmus exchange
program student. In 2009 I needed an “I would like to thank all Vaahto people who made my stay very pleasant, “ wishes Tuncay Gurcan as he heads home to Turkey.
internship to complete my studies. I was lucky enough to find this intern-ship at Vaahto through one of Vaahto’s Turkish customer mills, Halkali Kagit, where I had done my summer training during my studies.
Digging deeper into Pulp &
Paper Machinery
Before coming I had heard Vaahto Company’s name many times and knew some products through my mill experience at Halkali Kagit’s. During my stay in Hollola I began to realize why Vaahto has such a strong position in the pulp and paper indus-try. The knowledge, attitude and ex-perience of everybody at Vaahto re-ally impressed me.
I was involved in several projects during my internship: the tissue ma-chine rebuild project for a Finnish mill in Mänttä and Stora Enso’s re-builds in Imatra and Ingerois. As I had hoped I also had an opportuni-ty to get to know some of the main paper machine components like Vaahto’s headboxes and shoe press-es, which I found fascinating.
Marko Aalto, Production Manager, Vaahto Hollola, is pleased with the outcome of this joint venture. “Our team benefitted from having Tuncay join us. His enthusiastic approach to everything, from questioning every-day routines for instance, helped us see things in a new light. Fresh per-spective is always a plus! Our team also found themselves in a new sit-uation as communication was
con-ducted in English as opposed to our everyday Finnish. All in all we were pleased to have Tuncay as part of our team and wish him all the best in the future,” Aalto concludes.
A personal and
professional learning curve
I’m very pleased with my experience in Finland and at Vaahto. When I compare your country with my own there are many differences. Partic-ularly Finland is colder, darker and quieter than Turkey. But people are so kind, helpful and warm. That is why I like Finland a lot.
I’m also very happy with my train-ing. This experience was great and I would definitely recommend it to other students. Theory and practice are two very different things which is what you learn through training. Also personal competence is at the forefront in this globalized world we live in. A foreign internship is a great way to increase ones skills; obtain valuable work experience in a glo-bal business environment and learn about different cultures and oneself in general as it’s not always easy be-ing in a foreign country surround-ed by new people. I believe that my experiences at Vaahto will give me a great boost for my future busi-ness career. In brief if a student gets a chance to take part in an intern-ship, they shouldn’t miss it. And fur-ther more if its Vaahto, don’t think twice, but take a chance and join the team =)) ■
www.vaahtogroup.fi
EXPO
DATE
PulPaper 2010
Helsinki, Finland 1. – 3. June
China Paper 2010 Shanghai
Shanghai, China 15. – 17. September
PAP FOR Russia 2010
St. Petersburg, Russia 8. – 11. November
J
aprotek has lately received orders for equipment to the Norwegian offshore industry. One of these orders is to ABB in Vaasa. ABB is a pioneer in this field and Japrotek has also earlier delivered tanks to them.The order is for a transformer tank in SMO-material or EN 1.4547. The manufac-turing will be done according to the Nor-sok-standard and is very demanding; the inspections must meet the requirements of Norsok/ABB. After approved final inspec-tion the tank will be transported to ABB in Vaasa, where the transformers will be in-stalled into the tank. When the installation work in Vaasa is finished, the transformer tank will be shipped to Norway.
Deliveries to the offshore industry are always demanding due to the special cir-cumstances in which the machinery is used. For example this transformer tank and transformers will be placed on the sea bottom and because of this they are dimen-sioned to withstand large external pressure. Japrotek has year of experience in working with demanding production techniques and materials. “Deliveries to various cus-tomer industries have taught us the skills needed to succeed in this type of projects,” says Stig Sandström, Sales Manager, Japro-tek Oy Ab. ■
OffShORE PROJECT
fOR JaPROTEk
Transformer tanks are assembled at Japrotek’s pro-duction facilities in Pietarsaari.
S
telzer Rührtechnik Inter-national GmbH received three large orders for polyester plants with production capacities up to 1400 ton per day. The customer is one of the largest producers of polyester in Asia.Stelzer has successfully supplied agitators used for polyester produc-tion in Germany. The positive expe-rience is based on extensive CFD-Analyses (Computational Fluid Dy-namics). In the future Stelzer will fo-cus on this expanding market espe-cially in China. ■
STELZER
NEWS
Asian customers take advantage of Stelzer’s expertise.Welcome!
