1. The material of the shaft is mainly carbon steel and alloy steel. The commonly used carbon steel for Steel Parts is 45 steel, which should generally be normalized or quenched and tempered to improve its mechanical properties. Alloy steel has higher mechanical properties and heat treatment properties than carbon steel, but it is more sensitive to stress concentration and more expensive, so it is mostly used in high-speed, heavy-load and special conditions such as wear resistance, high temperature resistance or low temperature. . Due to the small difference between the elastic moduli of alloy steel and carbon steel at room temperature, the stiffness of the shaft cannot be significantly improved by replacing carbon steel with alloy steel.
2. Alloy steel can be used for shafts that bear larger loads, require high strength, compact structure or better wear resistance.
High Quality Steel Parts commonly used are 40Cr, 20Cr, 35SiMn, etc. It should be pointed out that when the dimensions are the same, the use of alloy steel cannot improve the stiffness of the shaft, because in general the elastic modulus of various steels is similar; the sensitivity of alloy steel to stress concentration is high, so the structural design of the shaft is more important. Pay attention to reducing the effect of stress concentration; when using alloy steel, corresponding heat treatment must be carried out in order to better exert the performance of the material. 3. The blank of the shaft is generally made of hot-rolled round steel or forging. Steel Turned Parts can also be cast steel or ductile iron for shafts with complex shapes (such as crankshafts and camshafts, etc.), the latter has the advantages of good vibration absorption, low sensitivity to stress concentration and low price.
We have a professional technical team that can provide high-quality CNC metal processing parts and metal processing services. In terms of CNC metal processing, we can manufacture high-precision high-quality stainless steel, 6061 aluminum, 7075 aluminum, brass, acrylic, hard steel, 45 steel and other material parts, and can perform surface processing such as oxidation and electroplating. We can also provide CNC steel processing , custom parts service. If you want to know more, please contact us.
