Quiz - 21 Flashcards
What is the purpose of tack welds:
To hold the parts in place so they can be finish welded
To hold the parts in place so they dont move during the finish weld
To be small enough so they do not affect the finish weld
(all of the above)
T / F: A simple way of correcting slight alignment problems is to use a hammer and possible an anvil to pound the part into place
True :)
What precautions should be taken if a hammer is used to shift a part into alignment:
Be sure not to strike the part in a location that will damage the part surface
Dont make the finished part unsightly or unusable with hammer marks
Why is it important not to strike the arc outside of the weld joint:
The finished weldment will look neater
The post weld cleanup will be reduced
Some codes and standards do not allow arcs to be struck outside of the welding joint
(all of the above)
What problem can result if the root opening of a weld is too wide:
More filler metal would be needed
More heat input to the base metal may cause greater weld distortion
It can result in a weld that will not withstand the part’s designed strength specifications
(all of the above)
T / F: Tolerance is the amount that a part can be bigger or smaller than it should be and still be acceptable:
True
Templates can be made out of:
Heavy paper Wood Cardboard Sheet Metal Other appropriate material
(all of the above)
Why is a prototype custom fabricated before producing multiple weldments:
To be sure that all of the parts fit as it was planned
To make sure the finished product is correct in appearance
(both A and B)
What are 3 devices used to hold parts in place when fabricating:
Clamps
Screws
Tack Welds
What is the purpose of a welding jig:
To hold parts in place for welding