And analyzes the reason and forming mechanism of the defects such as cold crack,air porosity and oxidation etc.proposes the measures of welding process to ensure the welding quality.

• 分析钛材管道焊接产生的冷裂纹、气孔、氧化等缺陷的原因和形成机理,提出焊接工艺措施,以确保焊接的质量。