Analysis of spot defects on the surface of a cold-rolled Fe-36%Ni alloy strip  

作　　者：TIAN Yuxin WANG Yu ZHU Yincun 

机构地区：[1]Baowu Special Metallurgy Co.,Ltd.,Shanghai 200940,China

出　　处：《Baosteel Technical Research》2024年第2期27-31,共5页宝钢技术研究（英文版）

摘　　要：Many spot defects were found on the surface of a cold-rolled Fe-36%Ni alloy strip produced in a factory,which seriously affected the surface quality of the product.Through metallographic microscopy and scanning electron microscopy analyses,it was found that the spot defects were caused by the residual oxide layer on the surface of the cold-rolled Fe-36%Ni alloy strip after hydrogen annealing.By properly increasing the grinding amount of the blank before cold rolling to remove the oxide layer,the spot defects on the surface of the cold-rolled strip were effectively eliminated,and the surface quality of the product was ensured.

关 键 词：Fe-36%Ni alloy cold-rolled strip spot defect 

分 类 号：TG335.12[金属学及工艺—金属压力加工]