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20 Cards in this Set
- Front
- Back
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Describe and explain the principles of operation of SAW |
Metals are joined by using an electric arc established between a continously fed BARE METAL CONSUMABLE electrode or electrodes and the work . Shielding gas is provided by a granular, fusible Flux material usually brought to the work area using a Flux feed system |
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Whay positions can SAW be used in |
Flat and horizontal |
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Name 4 types of materials that saw can be used on ? |
Carbon Alloy steels Stainless steel Nickel alloys |
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Whay are the advantages of using a screw-type work clamp with a SAW |
-provides a strong and positive contact to the work -minimizes heat buildup |
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Whay type of output slope do a SAW power sources use? |
Constant current (CC) constant voltage (CV) |
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Whatn is the recommended duty cycle for SAW power source ? |
100% |
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SAW may be used in the semi-automatic or automatic operation modes? True or false |
True |
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What is the advantage of using an AC power source for SAW |
It minimizes arc blow with multiple wire setups |
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What will usually results if the drive roll pressure is set too low? |
The wire electrode will slip and feed erratically |
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How will the arc react if the Flux mayer is too shallow? |
The weld will be flashing and will likely result in porosity |
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Which is helix? |
The space between two unrestrained loops of wire? |
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Wht types of drives roll system are normally used with SAW? |
Knurled or V-GROOVED |
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What type of wire feed set up is used with CV power sources ? |
Constant speed? |
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To increase arc length when you are SAW welding you would? |
Increase arc voltage |
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When using SAW, an increase in arc voltages produce ? |
Wider arc stream, and shallower penetration |
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When is DCEN used with SAW |
When shallower penetration is required |
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What diameters are SAW electrode wires availible in? |
1/16"--- 1/4" |
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Why type of Flux can be reused ? |
Fused flux |
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Which type of SAW flux generally used for additional of allotting 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 according to manufacturer specifications |
