| 摘要 |
This method uses argon gas without carbonic acid gas. So, this method has more stable welding condition, higher welding strength and elevating corrosion resistance. The stud (1) is the positive polarity of the discharged arc current and the material (2) is the negative polarity of the discharged arc current. The max. value of arc welding current is 140-200 A/mm2, the arc welding time is the 0.006-0.012 sec., the max. value of pilot arc is 5-20 A, the pilot arc time is 0.05-02 sec., the arc length is 2.5-3.5 mm and the outflow quantity of argon gas is 1-5 l/min.
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