Advanced Search
    CHEN Xiaolong, ZHOU Congrui, ZHOU Mingke, FAN Lei, XIONG Liangyou, MEI Peng, BAO Siqian. Blackening Causes of Cold-rolled Strip Surface[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2020, 56(10): 35-38. DOI: 10.11973/lhjy-wl202010008
    Citation: CHEN Xiaolong, ZHOU Congrui, ZHOU Mingke, FAN Lei, XIONG Liangyou, MEI Peng, BAO Siqian. Blackening Causes of Cold-rolled Strip Surface[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2020, 56(10): 35-38. DOI: 10.11973/lhjy-wl202010008

    Blackening Causes of Cold-rolled Strip Surface

    • The cold-rolled strip surface of Liuzhou iron and steel Co., Ltd. appeared blackening phenomenon in varying degrees. The causes of surface blackening of cold-rolled strip were analyzed by means of surface roughness analysis, micro morphology analysis and surface residual oxide analysis. The results show that the reason for blackening of the cold-rolled strip surface was the water corrosion during the pickling process, which resulted in a thin layer of iron oxide on the cold-rolled strip surface. After taking relevant measures to reduced the residual Cl- mass concentration on the cold-rolled strip surface, the blackening degree on the surface of the cold-rolled strip was obviously reduced.
    • loading

    Catalog

      Turn off MathJax
      Article Contents

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return