Mechanical Engineering - Workshop Technology - Discussion

Discussion Forum : Workshop Technology - Section 3 (Q.No. 5)
5.
In welding magnesium with TIG arc welding, direct current with __________ is used.
straight polarity
reversed polarity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 2 of 2.

Jeeva said:   6 years ago
TIG - Straight polarity, AC & DC can be used.

MIG - Only DC with reverse polarity.

Ganesan said:   4 years ago
Alumimium - TIG AC.
CU- TIG DC straight polarity.
Mg- TIG DC Reverse polarity.
(1)


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