齿轮的热处理和淬火

加热和淬火是齿轮加工中最关键的操作工序,经此处理后将赋予齿轮以满足抵抗高接触应力要求的机械性能和耐磨性能并具备高的使用寿命.但遗憾的是,在齿轮的制造中,热处理和淬火通常是被了解得最少的.由于热处理后的工件通常会产生变形并使工件失去光泽,往往会成为后续加工工艺的"瓶颈"而备受责难.本文之目的意在分析引起齿轮热处理和淬火变形的原因,并提出一些对性能进行调整的方法以便在淬火时得到合适的变形和高残余应力状态.

The Heat Treatment and Quenching of Gears

Heat treating and quenching are arguably the most critical operation in the manufacture of gears.It is these processes that provide a gear with the proper mechanical and properties to withstand high contact stresses and have high longevity.Unfortunately,heat treating and quenching are often the least understood in the manufacturing stream.Parts after heat treatment are often distorted or stained.It is the often the "neck" that all the ills of the manufacturing process are blamed.It is the purpose of this article to examine the causes of distortion during the heat treatment and quenching of gears,and provide some insight into proper corrective action distortion and high residual stresses during quenching.