Descaling Behavior of 430 Hot-rolled Stainless Steel in HCl-based Solution

作     者：Ying-ying YUE Cheng-jun LIU Pei-yang SHI Mao-fa JIANG Li-yan QIN Guang-wei FAN 

作者机构：School of Materials and MetallurgyNortheastern University Shanxi Taigang Stainless Steel Co.Ltd. 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2016年第23卷第3期

页      面：190-196页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Item Sponsored by National Natural Science Foundation of China(51304042,51374059) New Century Excellent Talents in University of China(NCET-11-0077) 

主　　题：descaling hot-rolled ferritic stainless steel pickling electrochemistry 

摘      要：Descaling of hot-rolled stainless steel is generally implemented through pickling process in HNO_3-HF mixed acids,which induces severe environmental concerns of nitrogen oxide（NOx）gases and *** to the electrochemical measurement,the mass loss test and the appearance analysis,a new pickling process which employed HCl-based solution was proposed and evaluated to provide theoretical basis for the development of environment-friendly and highly effective pickling *** the experimental condition,the HCl-based solution can compete with ordinary HNO_3-HF mixed acids in terms of pickling efficiency,surface integrity and the removal of Crdepleted *** descaling process of 430hot-rolled stainless steel in the HCl-based solution consisted of three *** descaling solution penetrated the oxide scales into the underlying metal,dissolving the Cr-depleted layer and part of *** oxide scales peeled off from the stainless steel and a polished and smooth surface was *** descaled stainless steel was dissolved uniformly in the HCl-based solution;therefore,the pickling duration was vital for desired surface *** the static condition,the appropriate descaling time of 430 hotrolled stainless steel in HCl-based solution was 400 s.