焊缝氢含量的测试分析表明，阵列式射流冲击热沉系统可以改善接头的残余应力分布，防止冷却水侵入焊缝。
The hydrogen contents investigations show that the FSW process with array jet impingement sink appaatus can prevent the joints form the effect of colding water.
缺点是在碳钢中有氢致裂纹、铝合金中有焊缝气孔产生的危险。
Disadvantages include risk of hydrogen cracking in carbon steels and weld metal porosity in aluminium alloys.
解释了水蒸气保护焊焊缝的氢质量分数不高，不出现气孔的原因。
The reason for not high hydrogen content and free porosity in welds with this process is explained.
应用推荐