Appropriate welding material, election of soldering acid, design of welding heat process and cleaning up influenced the welding quality significantly.

合理的焊接材料、钎剂的选择匹配，焊接加热程序的设计，焊接部位的彻底清理将对端环的焊接质量具有极大的影响。

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To both steels, the over match probabilities are3.64%and5%respectively and that should be noticed in welding structure design, welding material selection, as well as procedure design.

对应的两种钢的焊接接头，其超强匹配概率分别为3.64%和5%，在结构、焊接材料、工艺设计中值得注意。

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Then some measures for preventing lamellar tearing were proposed from the aspects of steel material selection, joint detail design, fabrication and welding process.

并从钢材选材、结构接头设计、加工及焊接工艺措施等方面提出了防止钢结构厚板层状撕裂的技术措施。

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