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19 Cards in this Set
- Front
- Back
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Cast refers to? |
Circle formed by one wrap of the wire. |
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What is the Helix of a wire |
The natural twisting of the wire forming. |
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What happens if the helix is excessive? |
The wire might not come out the nozzle straight and can cause an unstable arc and a pain in the dick. |
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B G 49 3 C G2? |
B is tensile strength. G means the wire must be used with gas. 49 is the minimum tensile strength in metric of the welded metal. 3 is -30 for the impact test. C for C02 (M if mixed). G2 chemical analysis. |
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What do you use to weld moderately rusty low carbon steels? |
Filler metals with additional deoxidizers. |
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In E491T-9CH Fcaw wire, what does the T, 9, and CH stand for? |
T - Tubular (S for solid and C for cored) 9 - shielding gas CH - Hydrogen |
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What does the G stand for in E492T-G? |
General classification for electrodes not covered under any other classification. |
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Name 2 Fcaw wires that can be used without external shielding gas? |
-3 -6 |
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In the GMAW short circuit transfer mode metal is transferred when? |
When the electrode comes into contact with the weld pool. |
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Very fine droplets of metal transferred across the arc in an axial fashion is what mode of transfer? |
Spray transfer |
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Which Gmaw mode of transfer is best for thin materials? (When deposition rates dont matter) |
Short circuit |
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Which Mcaw mode of metal transfer is best for thin materials? |
Pulsed |
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Where are the drive rolls is a pull type drive system? |
In the gun. |
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A pull type welding gun is meant to be used with? |
Softer wires |
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What type of wire drive system allows for greater machine to work distance? |
Push pull |
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What's the most popular drive roll system for steel? |
Push |
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Besides comfort, why is the mig gun neck curved? |
It ensures proper electrical transfer to the wire. |
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The welding cable assembly is made to supply? |
Current, gas and wire |
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What types of conduit liner are used for softer wire? |
Nylon, teflon, and plastic. |
