Study of evaluating method for non-metallic inclusions and development of slag refining for beating steel

被引：7

作者：

Nishikawa, T ^{[1
]}

Nagayama, H ^{[1
]}

Nishimon, S ^{[1
]}

Asai, K ^{[1
]}

Fujii, I ^{[1
]}

Sugimoto, T ^{[1
]}

机构：

[1] Aichi Steel Co, Prod Engn Div 1, Parts Engn Dev Div, Tokai, Aichi, Japan

来源：

BEARING STEEL TECHNOLOGY | 2002年 / 1419卷

关键词：

ultrasonic tester; extraction of acid solution; nonmetallic inclusion; fatigue life;

D O I：

10.1520/STP10852S

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The evaluation of the nonmetallic inclusions is very important to estimate the rolling contact fatigue life of bearing steel The study of the ultrasonic testing as nondestructive testing made it dear that the nonmetallic inclusion over 10 mum could be detected and there was a relationship between the flaking and the nonmetallic inclusions in the rolling contact fatigue life testing. On the extraction of the acid solution and Coulter counter method, the changes of the nonmetallic inclusions in molten steel was analyzed and the higher basicity - less SiO2 slag refining reduced the quantity of the nonmetallic inclusions over 20 mum size to 75% compared with the conventional refining method.

引用

页码：148 / 163

页数：16