环状零件的淬火变形规律及其在生产中的应用

Annular Parts Quenching Deformation Rules and Lts Application in Production

研究了不同含碳量环状零件的淬火变形规律。结果表明:随含碳量的增加,环状零件的变形率呈先升高后降低的抛物线形状,50钢淬火时变形率达到最大值;当淬火介质的冷却速度较快时,其变形率增大,低合金碳钢的变形率较小;运用该规律可以在机械加工过程中对涨大的变形量进行补偿,从而使淬火之后的零件尺寸符合技术要求。

The quenching deformation rule of annular parts with different carbon contents was studied. The results show that the deformation rate of annular parts increases firstly and then decreases with a parabolic shape, with the increase of carbon content. It reaches the maximum during 50 steel quenching. It increases when quenching medium cooling speed is higher. The deformation rate of the low alloy carbon steel is smaller. Using this rule can compensate the amount of swelling deformation in the machining process. Thus, the part sizes after quenching can meet technical requirements.