Top PDF Design and Construction of a Glass Casting Furnace

Design and Construction of a Glass Casting Furnace

Design and Construction of a Glass Casting Furnace

framework of contemporary glass by attempting to cast large.. sculptural and architectural formsp[r]

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Design and Construction of an Induction Furnace (Cooling Sys

Design and Construction of an Induction Furnace (Cooling Sys

(v) Selecting the Class and Type of Pump For the cooling system of induction furnace, centrifugal pump is selected because there is a strong dependency between capacity and the pressure that must be developed by the pump. Other characteristics of three classes of pumps are shown in Table C.5 of the Appendix. Among types of centrifugal class of pumps, centrifugal volute or radial flow type should be chosen as an appropriate pump for cooling system. In actual practice, it has been found that in volute type of casing there is only a slight increase in the efficiency of pump, because considerable loss of energy takes place in eddies developed in the casing. Volute type or radial flow based on the geometry of the flow path is significantly used where a small to medium quantity of liquid is to be discharged to high head. Moreover, centrifugal volutes are more economical compared with diffuser or turbine pump because there are no needs as diffuser ring and guide vanes. This reduces the frictional losses in the pump.
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Parameters for Design and Construction of a Pilot Scale Pyrolysis Gas-Furnace

Parameters for Design and Construction of a Pilot Scale Pyrolysis Gas-Furnace

7 Conclusion The experimental analysis has been observed to have followed the same pattern as the simulated analysis of the Pyrolysis Furnace. It was noticed that the temperature difference between the combustion chamber and pyrolysis chamber is a bit not favourable as the high temperature is much needed in the Pyrolysis chamber. The heat loss is minimal via the kaolin bricks lining the furnace and thus this makes the furnace efficient in the sense that in little time and little fuel consumption a high temperature was attained. The Computer simulation shows that in transient mode, the furnace does not produce the desired conditions but with a continuous heating over time the furnace will acquire a forced convection energy capable of saturating the pyrolysis chamber with enough heat energy that will overcome the thermal resistance to radiation inside the pyrolysis Chamber, R i and thermal resistance to conduction through the thickness of the pyrolysis chamber, . A rapid rate of radiation from the combustion chamber will give rise to the temperature inside of the pyrolysis chamber where a higher concentration of heat energy is needed for pyrolysis. One of the major advantages of using a simulation tool for evaluation is that all data for temperature, heat flux and energy are available for every part of the furnace as against the real system whereby the measurement was being done at disjointed and asymmetric points.
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DESIGN AND CONSTRUCTION OF BITUMINOUS PAVEMENT USING GLASS WASTE

DESIGN AND CONSTRUCTION OF BITUMINOUS PAVEMENT USING GLASS WASTE

Abstract: The use of waste materials in road construction can reduce the difficulties in disposal of such wastes. This paper aims to study the performance of pavement asphalt in which a fractional aggregate is replaced with crushed glass. In this paper, some considerable properties of asphalt mix i.e. stability, flow, specific gravity and air voids are investigated. One sample is prepared without adding glass for different percentages of bitumen. On other hand samples are prepared by adding crushed glass to the mix with 5%, 10%, and 15% by aggregate weight. The results are then analyzed. Thus crushed glass can be used in asphalt pavement with optimum replacement ratio of 10% by weight of total aggregates. Hence, the results show that the properties of glass-asphalt mixture are improved in comparison with normal asphalt pavement. It is concluded that the use of waste glass in asphalt pavement is desirable.
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LITERATURE REVIEW ON DESIGN AND CONSTRUCTION OF BITUMINOUS PAVEMENT USING GLASS WASTE

LITERATURE REVIEW ON DESIGN AND CONSTRUCTION OF BITUMINOUS PAVEMENT USING GLASS WASTE

This study attended the study about to find out the extent possible amount of use of waste glass by various transportation agencies in the United States and how they use it. From this information they got, recommendations for a potential strategy to be utilized by the Virginia Department of Transportation were to be developed. The literature search and telephonic survey was conducted to get information about present practice of selected state highway agencies regarding the use of waste glass in highway construction. The aim was to use waste glass which is unsuitable to use ass cullet in glass recycling industry. The research covered cities like New York, New Jersey, Pennsylvania, Maryland, Columbia, Florida, Indiana and Washington DC. The study was conducted by contacting all state/cities highway department. After all the study took over the conclusions they got are that Legislative pressures were increasing at both the national and state levels for use of recycled waste materials in highway construction. Such pressures are generated by the growing concern for landfill space and the increasing costs of placing waste material in such landfills. Also the preferred use of waste glass in highway construction is in embankments and fills. As Glasphalt has smooth surface compared to the aggregate and asphalt mix, Glasphalt will need more treatment for the use in highway construction. Even though Glasphalt can be used in making embankments and fills and curbs.
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Design For Die Casting (Spanner)

Design For Die Casting (Spanner)

The application of die castings is expanding continuously. The construction of die castings is becoming more complex and large-sized, and at the same time a shorter development cycle of new die casting products is required. How to produce high quality die castings in a shorter period with a lower cost has become an important and urgent task of die casting enterprises. Recently concurrent engineering (CE) has been introduced into die casting production, and the CAD/CAE/CAM integrated system of die casting dies has been established. In the CE process, the first step is to create a 3D part database for use in all aspects of the production process.
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CONCRETE FLOOR SLAB & CASTING BED CONSTRUCTION

CONCRETE FLOOR SLAB & CASTING BED CONSTRUCTION

Engineering for Panel Erection In addition to tilt-up hardware, Meadow Burke Engineering services are an important part of the complete tilt-up package. The location of lifting inserts in a panel is critical for safe, quick erection. Meadow Burke Engineering produces erection drawings of panels illustrat- ing their shape and the locations of openings such as doors and windows. Engineering calculations determine the center of gravity, panel weight, and stresses produced as the panel is lifted. Insert placement is calculated to minimize lifting stresses and ensure that the panel will hang plumb. The drawings will show temporary strongbacks bolted to the panel surface if required or where additional reinforcing steel is needed to increase strength where lifting stresses are excessive. The recommended method of rigging crane lines is detailed to ensure equal insert loading for fast, safe panel lifts. A panel layout sheet identifies each panel as it appears in the final design, if not supplied by the original plans. Brace design charts show allowable spacing and proper layout. The brace inserts are shown on panel details.
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Design on the furnace for heat treatment of welding

Design on the furnace for heat treatment of welding

1. Introduction In the marine economic development strategy, the maritime industry plays an important role, in which seaports are the development nucleus, the focal point for receiving and transporting import and export goods and circulation to all parts of the country. Shipping is currently responsible for up to 90% of import and export goods and a part of goods to regions, is the main artery in the transport and distribution system of the economy. Currently, Vietnam shipbuilding industry is still facing many difficulties and limitations. First of all, according to the information shared by Mr. Dam Dinh Vinh, expert of International Ship Brokerage Company Maersk Broker, the shipbuilding market around the world is currently very fierce as demand for shipbuilding is declining. Prices in all ship segments are relatively low and shipyards in general are competing fiercely in all areas such as ship type, pricing, financial and service issues. Regarding internal limitations, the construction capacity of Vietnam's shipbuilding industry currently only reaches 30-40% of design capacity. Supporting industry is very important for shipbuilding industry, but the progress of supporting industry development is slow, investment is spread, the localization rate is not reached. In terms of human resources, shipbuilders with international certificates are very few compared to the requirements. In terms of design, according to experts, the technical design stage currently only meets the requirements for small and popular vessels. Vietnam does not have a model test tank of international standards to develop new designs, all technical designs of export vessels still buy from foreign countries. This is the weakest point of Vietnam's shipbuilding industry today and will be a weakness in the coming time if there is no policy to prioritize investment and train design engineers. Metal is a material that has beneficial properties for construction: high strength, ductility and high fatigue resistance. As a result, metal is widely used in construction and other engineering industries. In its pure form, due to its low strength and hardness, high ductility, metal has a very limited use range. They are mainly used in the form of alloys with other metals and metals, such as carbon. Iron and its alloys (steel and cast iron) are called ferrous metals; the remaining metals (Be Mg, Al, Ti, Cr, Mn, Ni, Cu, Zn, etc.) and their alloys are called non-ferrous metals. Depending on the use and condition of
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DESIGN AND FABRICATION OF A CENTRIFUGAL CASTING MACHINE

DESIGN AND FABRICATION OF A CENTRIFUGAL CASTING MACHINE

method of producing an engineering component. Hence, without casting automobile, household appliances and machine tools would have become costlier. Method for making cast metal parts can be classified into three groups. The molding processes that use a permanent pattern and expendable mold, molding processes that use expendable pattern and expendable mold and the molding processes that use permanent mold. An expendable mold or pattern is the one that is used only once and discarded. The mold can be made of green-sand, core-sand, dry-sand, plaster of Paris or shell molding method using any of these, the same method is employed in the construction of the pattern and mold. [Brace et al, (1957)]
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Design, Manufacturing and Testing of controlled Stir Casting Furnace

Design, Manufacturing and Testing of controlled Stir Casting Furnace

furnace for three –phase application was built in Germany in 1906 by Rochling-Rodenhauser. Original designs were for single phase and even two phases were used on the three phase furnace. The two basic designs of induction furnaces, the core type or channel furnace and the coreless, are certainly not new to the industry. The channel furnace is useful for small foundries with special requirements for large castings, especially if off-shift melting is practiced. It is widely used for duplexing operations and installations where production requirements demand a safe cushion of readily available molten metal. The coreless induction furnace is used when a quick melt of one alloy is desirable, or it is necessary to vary alloys frequently. The coreless furnace may be completely emptied and restarted easily, makes it perfect for one-shift operations. Induction furnaces have increased in capacity to where modern high-power-density induction furnaces are competing successfully with cupola melting. There are fewer chemical reactions to manage in induction furnaces than in cupola furnaces, making it easier to achieve melt composition. However, induction melting is
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Influence of Belt Furnace on Glass-to-Metal Seal Process

Influence of Belt Furnace on Glass-to-Metal Seal Process

Influence of Belt Furnace on Glass-to-Metal Seal Process Introduction The glass, under suitable conditions, will bond well to a wide variety of metals and alloys which has led to the development of many useful technologies. One of them is Glass-to-metal seal (GTMS) technique. GTMS becomes a popular and low cost method to hermetic sealing, which is an important part of design of many products today. The GTMS is a fusion bonding technique; glass is heated to a molten state and bonds to the metal. Bonding occurs through wetting and chemical reactions between the metal and the glass. In addition to providing seal, the glass acts as an insulator between one pin to another and housing.
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Three Dimensional Glass Furnace Model of Combustion Space and Glass Tank with Electric Boosting

Three Dimensional Glass Furnace Model of Combustion Space and Glass Tank with Electric Boosting

2 Department of Materials Science and Engineering, National United University, Miaoli 36003, Taiwan The integrated glass furnace model of combustion space and glass tank is established to study the 600 t / d fl oat glass furnaces with and without electric boosting system. In the electric boosting furnace, the electrodes are vertically installed near hot spot, and the electric power is applied to replace part of fuel supply. The temperature and velocity fi elds as well as glass trajectories are presented to investigate the in fl uence of electric boosting on the glass furnace. The residence time, melting factor and mixing factor are employed to evaluate the glass quality and melting e ffi ciency. With the electric boosting system, the crown and fl ame temperature at fl ame covering zone are lower than the temperature in furnace without electric boosting, which would prolong the lifetime of glass furnace. However, the increased temperature at batch melting zone and fi ning zone are induced with the increased bottom temperature. Moreover, the glass fl ow at glass tank is promoted with electric boosting, especially around spring zone. The average melting e ffi ciency and glass melting quality are improved with the electric boosting system, while the melting quality of fastest particles in electric boosting case would be poorer. Additionally, the homogenization of glass melt is improved with electric boosting. With the optimum design of electric boosting system, the better glass melting quality, more homogenization, and higher melting e ffi ciency would be achieved. [doi:10.2320 / matertrans.M2019044]
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Effects of Adding Glass Fibers As Additive for Sand-Casting

Effects of Adding Glass Fibers As Additive for Sand-Casting

Experiment are tests or series of tests in which one can deliberately change one or more process variables (or factors) in order to observe the effect the changes have on one or more response variables. The (statistical) Design of Experiments (DOE) is an efficient procedure for planning experiments so that the data obtained can be analyzed to yield valid and objective conclusions. Design of Experiments refers to the process of planning, designing and analyzing the experiment so that valid and objective conclusions can be drawn effectively and efficiently. In order to draw statistically sound conclusions from the experiment, it is necessary to integrate simple and powerful statistical methods into the experimental design methodology. The success of any industrially designed experiment depends on sound planning, appropriate choice of design and statistical analysis of data and teamwork skills. In the context of DOE in manufacturing, two types of process variables or factors are considered: qualitative and quantitative factors. For quantitative factors, one must decide on the range of settings, how they are to be measured and controlled during the experiment. Qualitative factors are discrete in nature. A factor may take different levels, depending on the nature of the factor - quantitative or qualitative. A qualitative factor generally requires more levels when compared to a quantitative factor. Here the term 'level' refers to a specified value or setting of the factor being examined in the experiment.
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Glass as ink: seeking spontaneity from the casting process

Glass as ink: seeking spontaneity from the casting process

Photo: Sheila Labatt. ............................................................................................................162 Figure 155 Placement of nails in wooden plunger, diagram from studio notes. Sketch: Sheila Labatt ...................................................................................................................................162 Figure 156 Out of the Box III, 2015, Sheila Labatt, Glasma furnace glass and flameworked Gaffer cane, nail plunger created divots to trap air, creating bubbles to move cane inclusions into gestural tapers. Photo: Ester Segarra ...........................................................................162 Figure 157 Out of the Box II, 2015, Sheila Labatt, sodium bicarbonate creates carbon dioxide bubbles that run through cane inclusions during hot casting, creating ‘seed’ bubbles (upper third) that remained trapped inside the piece. Photo: Ester Segarra ..............................................163 Figure 158 Sliced and drilled lead crystal slabs, with powder, ready to accept next slabs, to rebuild the block. Photo: Sheila Labatt .................................................................................165 Figure 159 Shan Shui #5, 2008, Sheila Labatt, fired crystal and Kugler Colours powders, demonstrating bubble travel dragging colour asymmetrically, due to varying slab depths and hole diameters and placement. 24x15x5cm. Photo: Xiao Jin ...............................................165 Figure 160 Equal and opposite flow. Sketch: Sheila Labatt .................................................166 Figure 161 Ink Pot, 2010, Sheila Labatt, cast crystal and Kugler Colours powders, rising
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Modeling of a Glass Tank Furnace Using Artificial Neural Network

Modeling of a Glass Tank Furnace Using Artificial Neural Network

IJEDRCP1404001 International Journal of Engineering Development and Research (www.ijedr.org) 7 About Authors Debajyoti Mohanty obtains Bachelor of Technology in Ceramic Engineering (First Class) from National Institute of Technology (NIT) Rourkela, Orissa, India in 2011. He is working as a Senior Engineer in a renowned ceramic industry M/s Somany Ceramics Ltd., Bahadurgarh, Haryana where he acquired more than two years R&D experience. He has carried out many R&D projects in M/s Somany Ceramics Ltd. Mr. Mohanty published one article on “Development of input output relationship for self-healing Al 2 O 3 /SiC ceramic composites with Y 2 O 3 additive using design of experiments” in Ceramic International Journal.
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Design of Pig Casting Machine

Design of Pig Casting Machine

B. PCM Strand The PCM strand is an endless chain carrying the pig moulds. The strands are placed at an inclination. The level of the inclination is decided on the height required for receiving the molten metal and for discharging the cast pigs into the transport wagons. The molten metal tapped from the blast furnace and collected in the ladle and then poured in the metal transfer launder of PCM, through which molten metal is discharged into the traveling moulds for casting. The rate of pouring of metal and the take up rate of metal by the PCM are equalized by adjusting the rate of tilting of the ladle and the speed of the conveyor chain of the PCM strand.
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Density, Light and Form in Solid Glass Sculpture. Creating bespoke glass colour for kiln casting

Density, Light and Form in Solid Glass Sculpture. Creating bespoke glass colour for kiln casting

I have been melting glass in the following amounts: 100 g to 150 g in small hemispherical crucibles, for small colour tests; 800 g to 1500 g in tall crucibles for small objects and for making frit; 25 kg to 75 kg in a furnace. The process is roughly the same, except that for kiln melts, the whole amount of glass batch or frit mixed with oxides is placed in the crucible at once, whereas in Glass coloured with mixture of neodymium oxide (NdO), cerium oxide (CeO) and titanium dioxide (TiO 2 ) in the ratio 2:1:1, photographed in fluorescent light (top) and incandescent light. From left: 0.25% NdO, 0.125% CeO, 0.125% TiO 2 ; 0.5%
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Effects of Process Conditions of Melting Furnace on Alkali Free Glass Cleanliness

Effects of Process Conditions of Melting Furnace on Alkali Free Glass Cleanliness

Viskanta 4) mentioned that radiation heat transfer from high- temperature combustion products cannot be simulated in a ‘cold’ physical model. The third method is to employ numerical modeling where the physical and chemical phenomena occurring in a glass furnace are mathematically formulated and solved. Due to the fast development of computer technology, numerical modeling for the actual glass melting furnaces is becoming a valuable tool for improving the design and operation of the furnace. 5,6) However, adequate validation of the results gained by mathematical models is an essential issue. Computational model must be validated by comparison with experimental measurements. 7)
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KEYWORDS: digital fabrication; glass casting; mold fabrication; computation; precision

KEYWORDS: digital fabrication; glass casting; mold fabrication; computation; precision

Results from the experimentations provided preliminary evidence to validate the hypotheses as well as to evaluate and recalibrate the designed algorithm. More importantly, the glass fabrication experiments provided the opportunity for the students to directly interface with glass as a design medium; highlighting the importance of integrating the behaviour and complexities of the physical material into the design, computation and fabrication processes. This paper also argues that it is only through integrating cross-disciplinary knowledge and skills and through adopting a systematic and scientific approach to materials investigation that innovative glass design solutions can be achieved. Future research includes adapting this process to test the deformation and slumping behaviour of different types of glass (i.e. Sodium-Calcium glass, Lead glass, Borosilicate glass, etc.). Specifically, future efforts will focus on understanding the forming behaviour of recycled-post-consumer glass, which presents an abundant resource for reusable material in architecture. Methods for incorporating post-consumer glass into contemporary design applications can be instrumental in saving energy, resources and time.
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Numerical Study of Fluid Flow Behaviors in an Alkali Free Glass Melting Furnace

Numerical Study of Fluid Flow Behaviors in an Alkali Free Glass Melting Furnace

Moreover the overall heat transfer from the combustion zone into the glass melt will be improved and the circu- lation enhanced. The physical modeling method allows for a clear picture of mass exchange in the glass-melting furnace and enables for recommendations to be made on furnace operation. Murnane et al. 1) outlined the development of modeling tools used in the analysis of operations and design for electric glass furnaces. The harsh environment of an electric glass furnace makes the observation of glass flow patterns and temperature fields an expensive and risky attempt. Physical models based on the principle of similarity can provide an effective methodology where convective flows and tracer distributions can be easily studied. Murnane et al. also commented that although the use of physical model within the glass industry had evolved slowly over several decades, comparatively only few studies had been conducted on physical modeling corresponding to computer modeling. Tolstov et al. 2) established a physical model based on similarity theory to investigate the glass melt hydrodynamics in a highly efficient melting furnace for container glass. The design has to ensure not only the similarity of the thermal and hydrodynamic processes in the functioning furnace but also convenience in observation and the ability to measure the glass melt routes as well as velocity and temperature fields.
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