Cr5支承辊锻件无底波缺陷分析  

Analysis of Non-bottom Echo Defects in Cr5 Back-up Roll Forgings

作　　者：张少华 Zhang Shaohua

机构地区：[1]中国一重集团有限公司,黑龙江161000

出　　处：《大型铸锻件》2019年第3期52-54,共3页Heavy Casting and Forging

摘　　要：承制的直径1480 mm Cr5材质支承辊锻件在调质前进行无损检测时发现无底波缺陷,采用扫描电镜等手段对缺陷位置进行解剖分析,最终确认缺陷性质为缩孔疏松。Non-bottom echo defects have been found in the non-destructive test before tempering for the Cr5 back-up roll forging with a diameter of 1480 mm. Visual test and scanning electron microscopy have been used for anatomic analysis on the location of the defects, and finally the defects has been confirmed as shrinkage cavity and porosity .

关 键 词：支承辊 缺陷 缩孔疏松 

分 类 号：TG316.1[金属学及工艺—金属压力加工]