Manufacturing process
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This document contains casting terminology related to the mold making and casting process including flask, cope and drag, riddle, rammer, pouring cap and basin, gas vent, riser, sprue, runner, mould cavity, pattern, green casting sand, oil bonded sand, sand muller and lost foam casting.
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Metal casting process
Metal casting involves pouring liquid metal into a mold to produce parts of a desired shape. The key steps are melting metal to create a liquid, pouring it into a mold to achieve a solid shape as it cools and extracts heat, and then removing the solidified part from the mold. The quality of castings depends on factors like the flow of molten metal into the mold, the solidification and cooling process, and the type of mold material used. Common casting methods include sand casting, die casting, and investment casting.
Cutting tools
The document discusses cutting tools and their properties. It describes different types of cutting tool materials like high-speed steel, cemented carbides, ceramics, and diamond. It explains cutting tool nomenclature and defines terms like rake angle, clearance angle, nose, and flank. It also discusses factors that affect tool life like cutting conditions, work material properties, and tool material.
Casting terms & pattern
The document discusses key terms related to casting processes:
- A flask is a metal or wood frame used to form molds, and can be a drag (lower) or cope (upper) depending on its position.
- A pattern is a replica of the final object that is used to form the mold cavity.
- A parting line divides the two molding flasks that make up the mold.
- Molding sand is a mixture of silica sand, clay, and moisture used to form molds.
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The document discusses a first draft poster that was very basic without casting, quotations or awards. It then mentions experimenting with other fonts and lighting effects for the title of the poster.
Casting
The document discusses the process of casting aluminum. It explains key steps like using a flask to hold the sand mold, adding parting powder, shaping the pattern and mold, preheating the crucible, charging aluminum ingots, adding flux to prevent oxygen from causing bubbles, using a degassing tablet to remove impurities, monitoring the temperature with a pyrometer, removing dross from the top, lifting the crucible with tongs, and carefully pouring the molten aluminum through the runner into the mold cavity and up the riser. Safety is extremely important when working with aluminum which melts at around 660 degrees Celsius.
Machine tools
The document discusses several types of machine tools used in manufacturing. The lathe is used to make round parts like shafts and bushings. The vertical milling machine mills flat surfaces and grooves and can cut keyways or flats on shafts. The horizontal milling machine has been replaced by the vertical milling machine but can also produce gears. The drill press drills holes while the radial arm drill press drills large workpieces. The surface grinder provides extremely precise flat surfaces within 0.0001 inches. CNC machines are computer-controlled and faster than manual machines. The turning center is a CNC lathe while the machining center is a CNC milling machine.
Pattern allowances in metal casting
Pattern allowances are extra material added to patterns to account for shrinkage and other factors during the casting process. Patterns are larger than the final casting size. Allowances include shrinkage allowance for metal contraction, machining allowance for finishing, and draft allowance so patterns can be easily removed from molds. Proper allowances and pattern design can minimize defects and costs in metal casting.
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Metal casting process
Metal casting involves pouring liquid metal into a mold to produce parts of a desired shape. The key steps are melting metal to create a liquid, pouring it into a mold to achieve a solid shape as it cools and extracts heat, and then removing the solidified part from the mold. The quality of castings depends on factors like the flow of molten metal into the mold, the solidification and cooling process, and the type of mold material used. Common casting methods include sand casting, die casting, and investment casting.
Cutting tools
The document discusses cutting tools and their properties. It describes different types of cutting tool materials like high-speed steel, cemented carbides, ceramics, and diamond. It explains cutting tool nomenclature and defines terms like rake angle, clearance angle, nose, and flank. It also discusses factors that affect tool life like cutting conditions, work material properties, and tool material.
Casting terms & pattern
The document discusses key terms related to casting processes:
- A flask is a metal or wood frame used to form molds, and can be a drag (lower) or cope (upper) depending on its position.
- A pattern is a replica of the final object that is used to form the mold cavity.
- A parting line divides the two molding flasks that make up the mold.
- Molding sand is a mixture of silica sand, clay, and moisture used to form molds.
Apart from me poster draft 1
The document discusses a first draft poster that was very basic without casting, quotations or awards. It then mentions experimenting with other fonts and lighting effects for the title of the poster.
Casting
The document discusses the process of casting aluminum. It explains key steps like using a flask to hold the sand mold, adding parting powder, shaping the pattern and mold, preheating the crucible, charging aluminum ingots, adding flux to prevent oxygen from causing bubbles, using a degassing tablet to remove impurities, monitoring the temperature with a pyrometer, removing dross from the top, lifting the crucible with tongs, and carefully pouring the molten aluminum through the runner into the mold cavity and up the riser. Safety is extremely important when working with aluminum which melts at around 660 degrees Celsius.
Machine tools
The document discusses several types of machine tools used in manufacturing. The lathe is used to make round parts like shafts and bushings. The vertical milling machine mills flat surfaces and grooves and can cut keyways or flats on shafts. The horizontal milling machine has been replaced by the vertical milling machine but can also produce gears. The drill press drills holes while the radial arm drill press drills large workpieces. The surface grinder provides extremely precise flat surfaces within 0.0001 inches. CNC machines are computer-controlled and faster than manual machines. The turning center is a CNC lathe while the machining center is a CNC milling machine.
Pattern allowances in metal casting
Pattern allowances are extra material added to patterns to account for shrinkage and other factors during the casting process. Patterns are larger than the final casting size. Allowances include shrinkage allowance for metal contraction, machining allowance for finishing, and draft allowance so patterns can be easily removed from molds. Proper allowances and pattern design can minimize defects and costs in metal casting.
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Casting
Casting involves introducing molten metal into a mold cavity where it takes the shape of the cavity. Important factors include the solidification process and heat transfer during cooling. There are two main casting methods - ingot casting and continuous casting. Ingot casting produces ingots that are further processed, while continuous casting directly produces final products like steel slabs. Permanent molds are reused, while expendable molds like sand are only used once. Considerations in casting design include risers, draft angles, and machining/shrinkage allowances.
Machine tools
Machine tools are powered machines used for metal cutting and finishing operations to shape workpieces. Lathes are one of the earliest and most important machine tools, capable of turning, facing, boring, drilling, threading, knurling, and other operations. The basic elements of a lathe include the bed, headstock, tailstock, carriage, saddle, and tooling such as the cross slide and compound rest. Turning operations produce straight, conical, or curved surfaces, while other operations like facing, boring, and threading create specific surface features.
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What is the impotence of features like fillets, chamfer and draft in casting ...
for detail out put results of FEA analysis refere following link having heading:-
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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00919248678078Ppt Fits Tolerances[1]
The document discusses fits and tolerances between mating parts. It defines tolerance as the total amount a dimension is permitted to vary between its maximum and minimum limits. There are four main types of fits between parts: clearance fits which always leave space between parts, interference fits which create actual interference or contact between parts, transition fits which can result in either clearance or interference, and line fits where contact or clearance can result during assembly. The document also discusses hole and shaft basis systems for specifying fits using tolerances and deviations from a basic size.
Theory of-metal-cutting
This document contains lecture notes on manufacturing processes and metal cutting theory. It begins with definitions of manufacturing and an overview of various manufacturing processes. It then describes machine tools and their functions in metal cutting. Key sections cover classifications of manufacturing processes, cutting parameters like speed, feed and depth of cut, and characteristics and types of cutting tools materials. In summary, the document provides a comprehensive introduction to manufacturing processes, metal cutting theory, and machine tools.
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The document discusses industrial hazards and safety measures. It covers types of industrial hazards like chemical, dust explosion, fire, and electrical hazards. It also discusses accident reduction approaches like the actuarial approach and safety education campaigns. Control measures for different hazards are mentioned, like filters and cyclones for dust explosions, fireproof construction and sprinklers for fire hazards, and personal protective equipment for various exposures. The importance of a safety program and its advantages are highlighted.
Casting
The document discusses the process of sand casting. It begins by defining foundry and casting as the process of producing metal parts by pouring molten metal into a prepared mold. It then provides terminology used in casting such as flask, pattern, parting line, pouring basin, sprue, runner, riser, gate, core, and chaplets. The steps of sand casting are outlined as making the pattern, preparing sand mixtures, making the mold and cores, melting metal, pouring, cleaning, inspecting, and heat treating. Common casting materials and applications are also listed.
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The document discusses various tolerances for dimensions, form, orientation, and runout as defined by the ASME Y14.5M-1994 standard. It provides examples of how to apply tolerances for straightness, flatness, circularity, cylindricity, angularity, perpendicularity, parallelism, and circular runout. For each tolerance type, it defines the condition being controlled, shows examples of tolerance zones, and explains how to measure and apply the tolerance.
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The document discusses key terminology used in limits, fits, and tolerances including:
- Basic size, actual size, limits of size, deviations, tolerance, fundamental deviations, and fundamental tolerances.
- Holes and shafts refer to internal and external features, respectively.
- Fits include clearance, interference, and transition fits depending on how the tolerance zones of the hole and shaft overlap.
- Mass production aims to reduce costs and time through standardized parts, tools, and measurements while ensuring interchangeability.
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