山东冶金
山東冶金
산동야금
SHANDONG METALLURY
2013年
1期
42-43
,共2页
低碳高硫易切削钢%开裂%大颗粒夹杂物
低碳高硫易切削鋼%開裂%大顆粒夾雜物
저탄고류역절삭강%개렬%대과립협잡물
low carbon high sulfur free-cutting steel%cracking%large size inclusion
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.
通過金相顯微鏡和掃描電鏡分析,髮現低碳高硫易切削鋼開裂的原因為鋼材近錶麵的大顆粒夾雜物.大顆粒夾雜物中含有Zr、Na、Mg等元素,是冶煉過程水口和耐火材料的嚴重侵蝕及保護渣捲渣造成的.
통과금상현미경화소묘전경분석,발현저탄고류역절삭강개렬적원인위강재근표면적대과립협잡물.대과립협잡물중함유Zr、Na、Mg등원소,시야련과정수구화내화재료적엄중침식급보호사권사조성적.
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.
