The influence of He-to-Ar ratio in AC-TIG on the AZ31 welding properties was studied. The arc characters, weld penetration, jointforming were measured and analyzed.
Because adopting the connection joint of a bind structure, the invention is more fixed and reliable than the connection jointforming by adopting plastic nature distortion.
由于采用弯折结构的连接结点所以它比采用塑性变形形成连接结点更加牢固可靠。
3
Nine years ago, the two Iberian firms launched a united assault on Brazil, forming a joint venture from seven assorted mobile units that they already controlled.