首页|Analysis of spot defects on the surface of a cold-rolled Fe-36％Ni alloy strip
Analysis of spot defects on the surface of a cold-rolled Fe-36％Ni alloy strip
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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.
Fe-36％ Ni alloycold-rolled stripspot defect
TIAN Yuxin、WANG Yu、ZHU Yincun
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Baowu Special Metallurgy Co.,Ltd.,Shanghai 200940,China
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