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alok yadav

· started a discussion

· 1 Months ago

I THINK WRONG ANS (Question: 331692.0 )

PLZ GIVE REASON

Question:

Preheating before welding is done to -    

Options:
A)

To make the steel softer

B)

Burn away oil, grease, etc from the plate surface

C)

Prevent cold cracks

D)

Prevent plate distortion

  

Solution:

Ans: (c)

 

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
We have made changes in the answer. Please check the answer and refer the below statement.

Preheating the steel to be welded slows the cooling rate in the weld area. This may be necessary to avoid cracking of the weld metal or heat affected zone.

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