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36 Cards in this Set
- Front
- Back
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What position can saw be used in? |
Flat and horizontal |
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Name 4 materials that saw can be used on |
Carbon Alloy steels Stainless steel Nickel alloys |
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What type of output slope do saw power sources use? |
CC and CV |
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What duty cycle rating is recommended for most SAW power source? |
100% |
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Saw may be used in the semi-automatic or automatic operation modes |
True |
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What is the advantage of using an AC power source for saw? |
Minimizes arc blow with multiple wire set-ups |
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What will usually result if the drive roll pressure is set to low? |
The wire electrode will slip and feed erratically |
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How will the arc react if the flux layer is too shallow? |
The weld will be flashing and will likely result in porosity |
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Which is the helix? |
The space between two unrestrained loops of wire |
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What type of drive rolls are normally used with saw? |
Knurled or V-groove |
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What type of wire feed set-up is used with CV power source? |
Constant speed |
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To increase arc length when you are welding with saw, you would |
Increase arc voltage |
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When using saw, an increase in the arc voltage produces a? |
Wider arc steam and shallower penetration |
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When is DCEN used with SAW? |
When shallower penetration is required |
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Why are wire cast and helix requirements placed in CSA and AWS specifications for SAW filler metals? |
The ensure that the electrode wire will feed smoothly to the weld zone |
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What diameters are saw electrode wires available in? |
1.6 mm to 6.4 mm (1/16” to 1/4”) |
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What is the main difference between the CSA and AWS classification systems for saw electrode wires? |
CSA uses metric system to measure tensile strength |
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What is the main difference between the CSA and AWS classification systems for saw electrode wires? |
CSA uses metric system to measure tensile strength |
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Which type of flux can be re-used? |
Fused |
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What is the main difference between the CSA and AWS classification systems for saw electrode wires? |
CSA uses metric system to measure tensile strength |
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Which type of flux can be re-used? |
Fused |
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Which type of saw flux is generally used for the addition of alloying elements? |
Active flux |
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What is the main difference between the CSA and AWS classification systems for saw electrode wires? |
CSA uses metric system to measure tensile strength |
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Which type of flux can be re-used? |
Fused |
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Which type of saw flux is generally used for the addition of alloying elements? |
Active flux |
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What should be done with saw fluxes after they have become exposed to moisture? |
They should be dried or re-baked accorded to manufacturer specifications |
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Name four process-related causes of unstable arc |
Joint dirty with scale or rust Incorrect electrical stick out Insufficient flux coverage Too much wire cast or helix causing poor wire feed Worn contact tube Incorrect voltage/ amperage settings |
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Name four process-related causes of unstable arc |
Joint dirty with scale or rust Incorrect electrical stick out Insufficient flux coverage Too much wire cast or helix causing poor wire feed Worn contact tube Incorrect voltage/ amperage settings |
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Name 3 things you should check for when the wire feed motor operates, but the wire fails to feed |
Insufficient drive roll pressure Incorrect wire drive rolls Excessive pressure on wire spool brake Drive rolls are dirty or clogged Blockage in the liner or torch Plugged wire guide tubes |
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Name four process-related causes of unstable arc |
Joint dirty with scale or rust Incorrect electrical stick out Insufficient flux coverage Too much wire cast or helix causing poor wire feed Worn contact tube Incorrect voltage/ amperage settings |
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Name 3 things you should check for when the wire feed motor operates, but the wire fails to feed |
Insufficient drive roll pressure Incorrect wire drive rolls Excessive pressure on wire spool brake Drive rolls are dirty or clogged Blockage in the liner or torch Plugged wire guide tubes |
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Arc higher deposition rates obtainable with the saw process? |
Yes |
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Name four process-related causes of unstable arc |
Joint dirty with scale or rust Incorrect electrical stick out Insufficient flux coverage Too much wire cast or helix causing poor wire feed Worn contact tube Incorrect voltage/ amperage settings |
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Name 3 things you should check for when the wire feed motor operates, but the wire fails to feed |
Insufficient drive roll pressure Incorrect wire drive rolls Excessive pressure on wire spool brake Drive rolls are dirty or clogged Blockage in the liner or torch Plugged wire guide tubes |
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Arc higher deposition rates obtainable with the saw process? |
Yes |
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Is saw easily done in all positions? |
No |
