多次正火对12Cr2Ni4钢组织性能的影响

打开文本图片集

摘要：通过对12Cr2Ni4钢进行两种正火工艺试验，对比多次正火和常规正火效果，并采用金相法检测两种工艺对应的金相组织。结果显示：在正火温度、保温时间相同时，两次正火处理获得较细的珠光体组织，晶粒得到细化，钢的强度、硬度得到提高。

关键词：12Cr2Ni4钢；多次正火；晶粒细化

Effect of multiple normalizations on the microstructure of 12Cr2Ni4 steel

WANG Quanzhen1， JIANG Mingtong2， LIU Shuangqing1， REN Fujun1， WANG Hao3

1.Shengu Group Co.， Ltd.， Shenyang 110869， Liaoning， China

2. Dalian Vocational Technical College， Dalian 116035， Liaoning， China

3. Jiamusi Electric Machine Co.， Ltd.， Jiamusi 154002， Heilongjiang， China

Abstract： Through the multiple normalizing process test of 12Cr2Ni4 steel， the effect of multiple normalizing and ordinary normalizing effect were compared and analyzed， and the metallographic structure of the two processes was detected by metallographic method. When the normalizing temperature is heated and the holding time is exactly the same， the pearlite obtained after multiple normalizing is finer， the grain is refined， and the strength and hardness of the steel are higher.

Keywords： 12Cr2Ni4 steel; multiple normalizing; grain refinement

1 序言

众所周知，齿轮的服役工况非常苛刻，因此要求齿轮用钢应有高的硬度、耐磨性及疲劳强度。（剩余2095字）