作　　者： ;

机构地区： 上海大学材料科学与工程学院

出　　处： 《钢铁》 2005年第4期66-68,共3页

摘　　要： 分析了珠钢EAF—CSP工艺生产的热轧带钢冷弯裂纹的形成原因。研究表明:碳、锰含量高的钢中容易形成带状组织,钢中较高的铜含量和带状组织是形成冷弯裂纹的重要原因;生产厚规格带钢时,薄板坯表面微裂纹在轧制过程中难以消除;通过对化学成分和生产工艺的合理控制可以显著提高带钢的冷弯合格率。 Formation of cold bending crack of EAF-CSP hot rolled strip was studied.Industrial trials have shown that banded microstructure, caused by high concentration of carbon and manganese, and higher copper content contribute the formation of cold bending cracks, which could be solved by rightly controlling chemical compositions of the steel and processing parameters. For thicker steel strip, cold bending crack is eliminated during continuous rolling as reduction is not enough. Hence, it was essential to ensure proper casting parameters to provide flaw-free thin slabs.

关 键 词： 冷弯裂纹 带状组织 热脆性 薄板坯

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]