螺纹杆的常用材料

Commonly used screw rod materials in my country include 45# steel, 40Cr, amine steel, 38CrMOAl, high temperature alloys, etc. 1) 45# steel is cheap and has good processing performance, but poor wear and corrosion resistance. Heat treatment: quenching and tempering HB220-270, high frequency quenching HRC45--48. 2) The performance of 40Cr is better than that of 45# steel, but it is often plated with a layer of chromium to improve its corrosion resistance and wear resistance. However, the requirements for the chrome plating layer are high. If the plating layer is too thin, it is easy to wear, and if it is too thick, it is easy to peel off. After peeling off, it accelerates corrosion and has been less used. Heat treatment: quenching and tempering HB220-270, hard chrome plating HRC>553）硝基钢和38克摩尔具有相对出色的全面性能，并且通常被广泛使用.，氮化层达到{0.4-0.6 mm .}，但是该材料对水的氯化物腐蚀的抵抗力较低，并且具有相对较高的材料，并且具有相对较高的材料{5}}. 4. 4. 4 {5}）该材料不需要涂层，主要用于无卤素的注射成型机{.该材料具有较高的氧化抗性和耐腐蚀性.热处理HRA55` 60.