韩国POSCO公司的技术研究所开发了一种制造晶粒取向硅钢的新工艺，它将钢坯的加热温度降低了100℃且采取两段冷轧法．新工艺在冷轧过程中进行中间退火，是在湿氛一氢混合气氛中完成并实现钢坯的脱碳．但因所轧的钢坯厚度比传统晶粒取向钢板厚得多，所以脱碳比较困难．因此，研? POSCO Korea’s Institute of Technology has developed a new process for the manufacture of grain-oriented silicon steel, which reduces the heating temperature of billet 100 ℃ and take two cold-rolled method. The new process in the cold-rolled intermediate annealing process is carried out in a mixed atmosphere of wet hydrogen and hydrogen to achieve billet decarburization. However, due to the thickness of the rolled billet is much thicker than the traditional grain-oriented steel, decarburization is more difficult. Therefore, research?