Discussion
Oxidising flame is used to weld metals like.......
Answer: B
An oxidising flame is used for copper and brass.
An oxidising flame has excess oxygen. When brass is welded, its zinc tends to boil off; the slight excess of oxygen forms a thin oxide film on the pool that holds the zinc in. The textbook list for the oxidising flame is therefore brass, bronze and copper-based alloys.
Steel is welded with the neutral flame, because excess oxygen would burn the steel and make the weld porous and brittle. The metals in the last option are those listed for the carburising (reducing) flame, which keeps oxygen away from metals that oxidise easily.
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