摘要
通过金相显微镜和扫描电镜分析,发现低碳高硫易切削钢开裂的原因为钢材近表面的大颗粒夹杂物。大颗粒夹杂物中含有Zr、Na、Mg等元素,是冶炼过程水口和耐火材料的严重侵蚀及保护渣卷渣造成的。
By means of metallographic microscope and scanning electron microscope analysis, found that cracking of low-carbon high sulfur free cutting steel is caused by the large particle inclusions near the surface of steel.The large size inclusions contain Zr, Na, Mg and other elements, which is caused by severe erosion of outlet and refractory in smelting process and the entrapment of mold flux.
出处
《山东冶金》
CAS
2013年第1期42-43,共2页
Shandong Metallurgy
关键词
低碳高硫易切削钢
开裂
大颗粒夹杂物
low carbon high sulfur free-cutting steel
cracking
large size inclusion
