汽车钢板二次加工脆化试验及其在宝钢的应用  

Secondary Working Embrittlement Experiment for Automobile Steel Sheets and Its Application in Baosteel

作　　者：丁富连[1] 魏毅静[1] 陈卓人[2] 方健[1] 

机构地区：[1]宝钢集团有限公司研究院 [2]宝钢集团有限公司销售中心,上海201900

出　　处：《宝钢技术》2006年第2期61-65,共5页Baosteel Technology

摘　　要：汽车钢板二次加工脆化试验是评价汽车钢板使用性能的一项重要试验。评价指标一般采用二次加工脆化温度(DBTT)。选具有代表性的汽车用宝钢IF钢板,取不同的试验样杯尺寸、样杯拉延比、样杯圆角半径、冲制样杯时润滑剂、落锤高度等,对汽车钢板二次加工脆化试验的影响因素进行研究。并将宝钢原有的试验方法与GM9920P试验方法及试验结果进行对比分析,得出了两者的近似换算关系。本研究在完善GM9920P标准的同时,创建了宝钢的GM二次加工脆化试验方法,以“GM二次加工脆化检验作业指导书”的形式给出。SWE （ Secondary Working Embrittlement） is of great significance for the service quality assessment of automobile steel sheets, DBTF（ Ductile-Brittle Transition Temperature） is generally adopted as one of the assessment indicators. The influence of specimen dimensions, drawing ratio, radius of round angle, lubricant, height of dropping weight, etc, on SWE for some typical Baosteel IF steel sheet used in the automobile industry is studied. Through comparison and analysis of the experiments with Baosteel original method and GM9920P method, an approximate con- version relationship is gained. While perfecting the standard of GM9920P, this research established ways of Baosteel SWE and published a brochure ＂Guide to Examination for GM Secondary Working Embrittlement＂.

关 键 词：二次加工脆化 IF钢板 韧脆转变温度 

分 类 号：TG115[金属学及工艺—物理冶金]