Term
| Shielding Gas is directed onto the welding area by the __________ __________. |
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Definition
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Term
| Using the Push technique for welding _________________ the penetration & _________________ spatter. |
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Definition
Decreases Penetration
Increases Spatter |
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Term
| Using the Pull (or Drag) technique _____________ penetration & has ______________ spatter. |
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Definition
Increases Penetration
Minimal Spatter |
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Term
| What is the main disadvantage of using FCAW (Both Gas Covered and Gas Less)? |
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Definition
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Term
| During the welding process you suddenly notice excessive spatter, what corrections do you make to resolve this? |
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Definition
| Check Voltage, Gas Pressure, Stick Out Length, Anti-Spatter Spray, Decrease Wire Feed, etc. |
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Term
| What is "Fully Automated Welding"? |
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Definition
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Term
| What is "Semi-Automatic Welding"? |
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Definition
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Term
| What is the purpose of purging? |
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Definition
| To remove atmospheric air to prevent porosity |
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Term
| What does "Inter Pass Temperature" mean, when doing multi-pass welding? |
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Definition
| Safe temperature between last weld and next weld |
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Term
| What procedures should you take when welding on steel that has been tempered? |
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Definition
| Allow slow cooling of metal and limit the heat effected zone |
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Term
| Joint design should always be confirmed by a _____________ _____________ before welding a production piece. |
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Definition
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Term
| If you cannot find a suitable ground, before you weld, how would you overcome this? |
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Definition
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Term
| What is the purpose of preheating metal, prior to welding? |
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Definition
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Term
| What type of current is used for GMAW? |
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Definition
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Term
| What type of current is used for FCAW with shielding gas? |
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Definition
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Term
| What type of current is used for FCAW without shielding gas? |
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Definition
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Term
| Why are weave beads NOT recomended for FCAW? |
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Definition
| Risk of slag inclusions and heat distortion |
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Term
| What is observed in the welding process of FCAW when using CO2, and why is it used? |
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Definition
Eractic Arc
Cheap (Inexpensive) to use |
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Term
| List 3 advantages of using FCAW. |
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Definition
Penetration
Speed
Deposit Rate
Ease of Operation |
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Term
| Cylinder gas should always be reduced from the tank pressure to a working pressure with a ___________. |
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Definition
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Term
| What is the most common cause of arc outages in both wire processes? |
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Definition
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Term
| The time at a rated load at which the machine will operate without harm to the machine is called the ____________ ______________. This time period is based on a _________ minute time period. |
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Definition
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Term
| The most common gasses used in FCAW & GMAW are: |
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Definition
Ar (Argon)
CO2 (Carbon Dioxide)
O2 (Dioxide)
C25 (75% Ar & 25% CO2) |
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Term
| What are the functions of shielding gasses? |
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Definition
Prevent Oxidation of the weld
cleaning action
cooling, etc. |
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Term
| What does each digit in E71T stand for? |
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Definition
E = Electrode
7 = 70,000 lbs Tensile strength
1 = position
T = Tubular Electrode |
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Term
| You are welding with Gas shielded FCAW, list as many as possible the main criteria to be determined before you weld. |
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Definition
Base Metal
Joint Type
Filler Material
Polarity
Arc Voltage
Shielding Gas
Wire Stick out |
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Term
| You are welding with gas less wire and you want to increase penetration into the base metal, what do you do? |
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Definition
Decrease Wire Stick out
Use Pull Technique |
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Term
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Definition
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Term
| During the welding process you see undercut forming at the toe of the weld, what changes do you make to resolve this? |
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Definition
Dwell at sides
Slow Down
Change gun angle
Decrease voltage
Allow metal to cool |
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Term
| When doing multi-pass welds in either GMAW or FCAW, what is the process for successful welding? |
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Definition
Cleaning weld beads
Heat control
Proper stacking of beads |
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Term
| You are about to weld on Zinc coated metal, what procedures should you follow? |
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Definition
| Wear safety regulator and clean entire area to be welded |
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Term
| What changes would you make to a GMAW wire feed machine if you suddenly had to change to a different diameter wire? |
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Definition
Drive Wheels
Liner
Contact Tip
Test Weld |
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Term
| What does GMAW stand for? |
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Definition
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Term
| What does FCAW stand for? |
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Definition
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Term
| What does "Dual Shield" mean? |
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Definition
| FCAW (Flux Core Wire) with Shielding Gas |
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Term
| The 3 types of wire feeders are __________, ________________, and _________________. (Hint: Think feed mechanism) |
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Definition
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Term
| Cylinders should always be stored and used in the ______________ _______________ and secured to a solid object to keep them from _____________ _________________. |
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Definition
Vertical Position
Falling Over |
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Term
| When stored, cylinders should always have the ____________ ________ installed until ready to use. |
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Definition
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Term
| Why are Weave Beads NOT recommended in FCAW? |
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Definition
Risk of Slag Inclusions
Heat Distortion |
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Term
| What does each digit in E70S-2 stand for? |
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Definition
E - Electrode
70 - 70,000 lbs Tensile Strength
S - Solid Wire
2 - Classification of Wire |
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Term
| Why if the push technique NOT often used in FCAW or GMAW welding, and what is observed when it is used? |
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Definition
Lack of Penetration
Spatter |
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Term
| When the welding process is set up so that the electrode is contacting the work piece and melting off, this is called ___________ ___________ mode. |
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Definition
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Term
| What complications can be formed by welding over oxides or contamination on metal? |
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Definition
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Term
| When the welding process is set up so that the electrode is droped onto the work piece in very small droplets, this process is called ____________ mode. |
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Definition
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