Mechanical Engineering - Workshop Technology - Discussion
Discussion Forum : Workshop Technology - Section 1 (Q.No. 16)
16.
In welding copper alloys with TIG arc welding
Answer: Option
Explanation:
Direct current with straight polarity (DCEN) is used when TIG welding copper alloys, the electrode is positive and the workpiece is negative. This polarity is preferred when welding copper alloys because it creates a stable arc with a deep and concentrated heat at the point of contact between the electrode and the workpiece, which helps to achieve a consistent weld.
Discussion:
14 comments Page 2 of 2.
Sanju said:
1 decade ago
And strait polarity for thin and low melting base metals.
SANJAY said:
1 decade ago
In this used only DC current & strait polarity used for thin base metal.
Prem said:
1 decade ago
DC with reverse polarity used for magnesium.
The AC is more versatile in welding for steel, cast iron, AL & Mg.
The AC is more versatile in welding for steel, cast iron, AL & Mg.
SANGRAM SEKHAR SAHOO said:
1 decade ago
AC - used for non-ferrous metal except copper.
DC WITH STRAIGHT POLARITY - used for ferrous metal and also for copper.
DC WITH STRAIGHT POLARITY - used for ferrous metal and also for copper.
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