主蒸汽管道焊接裂纹防止方法

PREVENTING CRACKING FROM WELD JOINTS OF MAIN STEAM PIPE LINES

为提高大型火力发电厂主蒸汽管道（合金大径管）焊接质量,从热处理工艺、焊接材料、焊接方法及工艺方面研究了裂纹的防止方法。

In order to increase weld quality of main steam line made from large diameter alloy steel pipe in conventional power plant, the optimum procedure to prevent cracking from weld joint is worked out based on the study to welding material, procedure parameters and heat treatment.