Discussion
In MIG welding helium or argon is used in order to......
Answer: D
Helium or argon is used to act as a shielding medium.
In metal inert gas (MIG) welding, the inert gas flows from the nozzle around the arc and the molten pool, keeping out oxygen and nitrogen from the air, which would otherwise cause oxidation and porosity. Being inert, argon and helium do not react with the weld metal.
MIG welding uses no flux; the gas does the job flux does in stick welding. Any cooling is incidental, and the electrode wire is consumed rather than protected for its own sake.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development