Manufacturing Processes

There are mainly 2 types of casting. They are sand casting and special casting. Advantages: complex shapes produced; wide range of applications; Lower cost; less cutting process. Shortcomings: coarse structure and many defects; unstable quality.
and their application and interconnection in mechanical manufacturing; the processing process and structural processability of metal parts; the influence of common metal material properties on the processing technology; the synthesis of process methods Compare and so on. To study the processes and methods of smelting, casting, forging, welding, metal heat treatment, cutting, mechanical assembly, etc. of metal materials (or
Manufacturing Processes
Reporter: Victor
CONTENT 01
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Overview Metal Manufacturing Processes
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Applications and Manufacturers
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Conclusion
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Basic Introduction
blanks, semi-finished products, etc.) in mechanical manufacturing.
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Metal Manufacturing Processes
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Metal Manufacturing Processes
Deformation Processing
Deformation processing refers to the process in which a metal or alloy is deformed in a predetermined manner under the action of an external force to form an article having a certain geometric shape and size. The deformation processing can be carried out in a heated state or at room temperature.
Sand Casting Main Process
Drawin g Sanding Moldin g Core making Formin g Injection Grind ing Clea ning
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Forging
Forging using a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging having a certain mechanical property, a certain shape and size. Through forging can eliminate defects such as as-cast looseness caused by metal in the smelting process, optimize the microstructure, and at the same time, the mechanical properties of the forgings are generally better than those of the same materials due to the preservation of the complete metal flow lines. For important parts of the relevant machinery with high load and severe working conditions, forgings are often used except for the available rolled sheets, profiles or welded parts.
Casting
Casting is a metal thermal processing technology that has been mastered by humans about 6,000 years. The process has reached a fairly high level in China. Casting is a method of casting liquid metal into a casting cavity that conforms to the shape of the part, and after cooling and solidifying, to obtain a part or blank. The material to be cast is mostly a metal that is originally solid but heated to a liquid state (eg, copper, iron, aluminum, tin, lead, etc.), and the material of the mold may be sand, metal or even ceramic. The method used will vary depending on the requirements.
Grinding Processing
processing is a mechanical method of removing materials. Refers to the using abrasive tools to remove excess material on the workpiece. Grinding is one of the most widely used material removal methods.
How much you know about metal
Basic Knowledge
(1) Mechanical properties of metallic materials The concept of mechanical properties. Symbols, units, physical meanings and test methods for main mechanical properties (strength, ductility, hardness, toughness and fatigue strength). (2) Crystal structure and crystallization of metal, crystal structure of pure metal, crystallization process of pure metal. Cooling curve and undercooling. The concept of grains, grain boundaries, crystal lattices, unit cells, and crystal faces. The effect of grain size on The mechanical properties of metals. The homologous transformation of metals. (3) Phase structure and phase diagram of the alloy The phase of the alloy. The concept of a binary alloy phase diagram. (4) Iron carbon alloy Phase, characteristic points and characteristic lines in the iron-carbon alloy phase diagram. The structural transformation of a typical iron-carbon alloy. (5) Heat treatment of steel The structural of annealing, normalizing, quenching and tempering of steel, process characteristics and applications. The quenching and chemical heat treatment of steel. (6) Common steel The effect of carbon content and common elements on the mechanical properties of carbon steel. Classification, grades and uses of steel.
and metal processes?
Concept
Metal Processes is a comprehensive technical discipline that studies the process of
manufacturing metal parts. It mainly studies: the regularity of various process methods
Cutting Processing
Cutting processing refers to the method and process of using tools to cut excess material from a workpiece to obtain the required geometry, dimensional accuracy, and surface quality. Grinding
Continual casting
Lost foam casting
Squeezing die casting
Vacuum casting
Gravity dቤተ መጻሕፍቲ ባይዱe casting
Categories
Casting
Centrifugal casting
Low pressure casting
Die casting
Investment casting
Sand casting
Sand Casting
Sand is used as a molding material. Including wet sand type, dry sand type and chemical hardening sand type, but not all sand can be used for casting. Advantage is lower cost(sand can be reused); disadvantage is the mold is time-consuming to manufacture, the mold itself cannot be reused, and the finished product. We should destroy the mold so we can get the product.