Welding is a joining process that produces coalescence of materials by heating them to the welding temperature, with or without the application of pressure alone, and with or without the use of a filler material.
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What is welding the process of?
Welding is the process of permanently joining two materials together to make them act as a single piece.
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When applied correctly welding is.....
the most economical and efficient way to permanently join materials.
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Give advantage 1 of welding.
Lowest cost permanent joining method.
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Give advantage 2 of welding.
Lighter weight finished items, no overlaps or bolts, fasteners, etc.
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Give advantage 3 of welding.
Can join all commercial metal types, apart from exotic metals.
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Give advantage 4 of welding.
Can be used anywhere, with caution in regards to sparks and transmission of heat through structures.
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Give advantage 5 of welding.
No loosening effect as can happen with nuts and bolts, no fretting in joint.
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Give advantage 6 of welding.
Leak proof joints.
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Give disadvantage 1 of welding.
Strict procedures are required to be followed for each type of weld and material being used.
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Give disadvantage 2 of welding.
Manual welding is dependant on human factors of the welder.
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Give disadvantage 3 of welding.
Internal inspection of the weld is required by non-destructive techniques.
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Give disadvantage 4 of welding.
Welds can only be remade a controlled number of times due to the metallurgical changes that occur.
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What is solid state welding?
Solid state welding is a group of welding techniques that produces coalescence by the application of pressure without melting any of the joint components.
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Name what all solid state welding processes have in common.
All solid state welding processes use time, temperature, and pressure individually or in combination to produce coalescence of the base metal without significant melting to the base metal.
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What is the benefit of no significant heating of the metal?
The base metals retain their properties with limited HAZ's and the problems of welding two different base metals with different thermal expansion coefficients and conductivity is reduced.
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Other cards in this set
Card 2
Front
What is welding the process of?
Back
Welding is the process of permanently joining two materials together to make them act as a single piece.
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