| 英文摘要 |
The TIG welding is one of the main arc welding processes, in which the necessary heat for welding is generated by maintaining an arc between a refractory tungsten electrode and the base metal to be welded. The electrode, the arc, and the area surrounding the molten metal are protected from atmospheric contamination by an envelope of inert gas during heating and subsequent cooling. It is most commonly used to weld thin sections of stainless steel, aluminum alloy, magnesium alloy, and titanium alloy. The primary limitation of TIG welding is low productivity because of its low deposition rate, shallow penetration depth, and low travel speed. The inability for TIG welding to produce deep penetration welds limits the thickness of workpieces that can be reliably joined to less than approximately 3 mm. The low efficiency and productivity of TIG welding can be traced to the greater number of passes required to fill the groove joint for thick plates or heavy wall pipes, causing additional filler metals to be needed. Additional costs and a substantially longer welding time are incurred through edge preparation. |
本站僅提供期刊文獻檢索。
