摘要
0.20 mm及以下厚度的薄规格取向硅钢由于显著的表面效应生产难度更大,开发时更容易造成降级或废品率。由于这些高端取向硅钢生产技术保密而很少有相关细节报道,并且不同的成分体系对应的组织、织构及抑制剂参数和工艺参数应该有所差异,因此各企业需要自己摸索它们之间的关系。本文基于企业开发成功的0.20 mm产品,在实验室条件下全面考察其工艺的可重复性及组织结构变化的敏感性,揭示了由一次再结晶到高温退火1200℃关键温度下的基体取向类晶粒、异常长大类晶粒的尺寸、取向及抑制剂的特点。希望从理论上澄清薄规格化带来的显著表面效应和关键组织织构参数,为全面提升我国整体取向硅钢生产控制的理论水平打下基础。结果表明,该样品在实验室高温退火也显示出好的重复性,对应的一次晶粒尺寸平均值约18μm,二次再结晶温度1050℃,二次再结晶温度区间在15℃以内,二次再结晶前平均基体晶粒尺寸长大不超过1μm。
The production of thin gauge grain oriented silicon steel of 0.20 mm or below is rather difficult due to strong surface effects and shows high tendency of degraded or even waste products.Because the techniques for producing such high end products are of high business secrets for enterprises and rather limited reports are found in literatures and,in addition,different composition designs of various enterprises show the suitable processing parameters and the relationship of average grain sizes,textures and inhibitors of their own,each enterprise should seek and find out suitable parameters in its own products.This paper examined in laboratory,based on a successfully produced 0.20 mm thick thin gauge grain oriented silicon steel in the production lines,its repeatability and structural susceptibility and revealed the features of grain size distributions,inhibitors and textures of both matrix grains and secondary recrystallized grains in annealed sheets from primary recrystallization to secondary recrystallization stages.It is hoped to clarify theoretically the significant surface effects brought by thinning sheet thickness and find out key structural and textural parameters and to lay out a better fundamental of comprehensive control of thin gauge grain oriented silicon steel production in our country as a whole.Results show that good repeatability of secondary recrystallization is confirmed.The average primary grain size is about 18μm and secondary recrystallization temperature is 1050℃with a finishing temperature of less than 15℃.The average grain size before the start of secondary recrystallization increased less than 1μm in comparison with that of primary recrystallization.
作者
杨平
李洋
顾新福
张海利
贾志伟
YANG Ping;LI Yang;GU Xinfu;ZHANG Haili;JIA Zhiwei(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Iron and Steel Research Institute of Ansteel Group Corporation,Anshan 114009,China)
出处
《电工钢》
2021年第5期1-9,共9页
ELECTRICAL STEEL
基金
国家自然科学基金项目(51931002)。
关键词
薄规格取向硅钢
织构
晶粒尺寸
高温退火
thin gauge grain oriented silicon steel
texture
grain size
high temperature annealing
作者简介
通信作者:杨平(1959-),男,教授,E-mail:yangp@mater.ustb.edu.cn。
