M30Mn2锚链钢连铸坯表面裂纹原因分析  

Analysis of Surface Crack Produced in Hot-transporting and Hot-charging Process on M30Mn2 Anchor Chain Steel

作　　者：杜显彬[1] 周平[1] 朱伟华[1] 衣中文[1] 曹玉红[1] 

机构地区：[1]莱芜钢铁集团有限公司,山东莱芜271104

出　　处：《山东冶金》2003年第6期52-53,共2页Shandong Metallurgy

摘　　要：莱钢特殊钢厂采用电炉短流程试制生产 M3 0 Mn2锚链钢 ,红坯热送成材后出现比较严重的表面裂纹。分析认为其主要原因是热装热送工艺不完善 ,铸坯在两相转变温度区热送 ,钢的热脆性造成了大量的裂纹源 ,在轧制成材过程中裂纹进一步扩展 ,而且带状组织没有明显得到改善。同时提出了低温热装、高温加热、轧后充分冷却等控制裂纹产生的工艺改进措施。Trial product M30Mn2 anchor chain steel that appears serious surface crack after hot-transporting is produced by electric arc furnace with short route in the special steel works of Laigang. The main cause is unperfect hot-transporting and hot-charging process which causes a lot of crack source expanding during rolling process and the strip structure can't improve obviously.The efficient process improved measures included low temperature hot-charging, high temperature heating, enough cooling after rolled and so on are pointed out.

关 键 词：锚链钢 连铸坯 表面裂纹 热送热装 低温热装 高温加热 

分 类 号：TF777[冶金工程—钢铁冶金] TG142[一般工业技术—材料科学与工程]