What are the materials of common parts in precision parts processing?
The material of common parts in precision parts processing.
There are many types of parts commonly used in precision parts processing, such as gear parts, box parts, shaft parts, spring parts, etc. These parts are used in different situations, the performance requirements are also different, and the materials used have their own characteristics. Better results can be achieved and better economics can be achieved by judicious selection of materials to manufacture different types of parts. So what are the materials of these common precision parts in processing?
1. Gear parts
Gears are one of the most widely used components in all types of machinery and instruments. Its role is to transmit power and change the speed and direction of movement.
The vast majority of gears are made of forged steel (forged and cast steel), some low-speed gears with open drives can be cast iron, and non-ferrous metals and engineering plastics can be used in special cases. (Gears are usually used after heat treatment, so use medium carbon or alloy steel.)
2. Box parts
The box stand is an essential part of the machine. Boxes are often complex in shape, large in size, and have thin hollow walls.
The choice of box material is usually cast iron cast steel. For simple construction and low volume boxes, a variety of mild steel components can be used to manufacture welded components to reduce weight.
3. Shaft parts
The function of the shaft is to support rotating parts and transmit power or motion. Shaft components are one of the important components of machine tools, automobiles and other types of machines. Shaft components are typically designed and selected based on strength, stiffness calculations and structural requirements.
The materials used to manufacture shaft components are mainly structural steel (such as 45, 40Cr, 38CrMoAl, 20Cr), as well as stainless steel, non-ferrous metals, and even plastics for special occasions. In recent years, ductile iron and high-strength cast iron (such as HT350 and KTZ550-06) are increasingly used as materials for making shafts, such as crankshafts for internal combustion engines and spindles for general-purpose machine tools.
4. Spring accessories
Springs are an important part of various machinery and instruments. They are mainly used for shock absorption of various types of machines (such as crusher springs and vehicle suspension springs), mechanical energy reserves (such as winders in meters, etc.) and control movements (such as valves, clutches, brakes, etc.). ).
Springs take advantage of the elastic and structural characteristics of materials. Under the action of external force, elastic deformation occurs. Mechanical or kinetic energy is converted into deformation energy. After the external force is removed, the elastic deformation recovers, and the deformation energy is converted into mechanical or kinetic energy.
The material used to make the spring is mainly medium carbon carbon alloy steel. There are carbon spring steel, manganese spring steel, silicon-manganese spring steel, chromium-vanadium spring steel, silicon-chromium spring steel, tungsten-chromium-vanadium spring steel, etc.
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