1. explain why preheating the components to be welded is effective in reducing the likelihood of developing cracks
2. make a list of welding processes that are suitable for producing (a) butt joints, where the weld is in the form of a line or line segment, (b) spot welds, and (c) both butt joints and spot welds. Comment on your observations.

Question

nurhidayah nurhidayah

13-04-2020
Engineering

contestada

1. explain why preheating the components to be welded is effective in reducing the likelihood of developing cracks
2. make a list of welding processes that are suitable for producing (a) butt joints, where the weld is in the form of a line or line segment, (b) spot welds, and (c) both butt joints and spot welds. Comment on your observations.

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jeremiahgilleland jeremiahgilleland · Answer 1 · 2020-04-13T14:18:53+02:00

Answer:

Pre- heating allows the metal to not be shocked by the temp change and allows for better penetration as well as less undercut

Explanation:

you can perform a butt joint with tig, mig, stick, oxy fuel, pulse, spool, etc. tig and mig I know for sure can spot and butt weld.

tig is used for a lot of spot welding because it's used on aluminum and aluminum can disintegrate if it incurs too much heat, making spot welds ideal for most situations