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40 Cards in this Set
- Front
- Back
The primary reason why oxyacetylene and stick-arc welding are no longer recommended for collision repair is that: |
There is too much heat-affect |
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What was the primary concern with early two sided spot welders for collision repair? |
Not enough pressure or power |
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Technician A says that most vehicle makers now recommend squeeze type resistance spot welding for collision repair. Technician B says that squeeze type resistance spot welding should only be used on cosmetic outer panels. Who is correct? |
Technician A |
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Technician A says that squeeze type resistance spot welders are recommended for welding sectioning joint seems. Technician B says that today's squeeze type resistance spot welders are capable of making welds that look just like original spot welds. Who is correct? |
Technician B |
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List three true statements about the squeeze type resistance spot welding process |
A. No filler metal required. B. No filtered lens required. C. Easy to learn. |
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Technician A says that there must be the proper amount of power into the repair facility for a spot welder to make adequate welds. Technician B says that there must be the proper amount of power at the outlets for a spot welder to make adequate welds. Who is correct? |
Both A and B |
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Technician a says that when making a spot weld, the current is usually on for 2 to 3 seconds. Technician B says that when making a spot weld, the electrode arms release immediately after the current turns off. Who is correct? |
Neither A nor B |
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What is recommended for personal safety when spot welding without adhesives? |
safety glasses with side shields |
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The purpose of the "hold time" in the spot welding process is to: |
Allow the weld to solidify. |
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Technician a says that a squeeze type resistance spot weld is made in three stages. Technician B says that where a squeeze type resistance spot welder will not reach, a single-sided spot welder may be used. Who is correct? |
Technician A |
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Technician A says that the high primary circuit voltage is transformed to low voltage to make the weld. Technician B says that the high primary circuit current is transformed to low current to make the weld. Who is correct? |
Technician A |
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Technician A says that installing longer X-type arms may require higher inlet pressure to get proper squeeze pressure at the tips. Technician B say that some spot welding machines only have X-type arms. Who is correct? |
Both A and B |
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Electrode tips stick to the workpiece when: |
Steel transfers to the tips. |
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All of these are true about different types of electrode tips EXCEPT: A. Can be angled B. Some are made of steel alloy C. Can be domed or flat on the end D. Varying diameters |
B. Some are made of steel alloy |
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Technician A says that removable electrode tip ends are usually threaded on. Technician B says that removable electrode tip ends will usually not "mushroom" like standard tips. Who is correct? |
Neither A nor B |
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Generally, the larger the electrode tip diameter, the: |
More current required. |
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Technician A says that some spot welders circulate coolant all the way to the tips. Technician B says that some spot welders use the same compressed air source for cooling as the inlet pressure. Who is correct? |
Both A and B |
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Technician A says that some spot welders have a programmed setting for coated steel. Technician B says that some spot welders have a programmed setting for weld bonding. Who is correct? |
Both A and B |
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An exceptionally large black ring around the spot weld is a usual indicator of: |
Too much time |
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A display on the welder that reads "Too much clamping force" is an example of: |
A smart feature |
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A flange is being prepared for spot welding with no adhesive. Technician A says that E-coat should be removed from the exterior of the flange. Technician B says that the zinc coating should be removed from the interior of the flange. Who is right? |
Technician A |
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A shunt is required when there is: |
No metal to metal contact at the mating surfaces. |
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"Pitch" refers to the: |
Distance between welds. |
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Technician A says that many vehicles recommend making replacement spot welds close to original welds. Technician B says that replacement spot welds should not be made in the same spot as original welds. Who is right? |
Both tech A and B |
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All of these commonly cause metal throwout EXCEPT: A. Force too high B. Squeeze time too short C. Current too high D. Poor fit up |
A. Force too high |
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A peel or twist destructive test is successful only if: |
A proper size nugget pulls out of one piece |
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Technician A says that a common cause of an oblong shaped weld is misaligned electrode tips. Technician B says that a common cause of too deep an indentation is the force set too high. Who is right? |
Both tech A and B |
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Technician A says that staggered spacing of original spot welds is likely intentional. Technician B says that inconsistent sizing of original spot welds is likely intensional. Who is right? |
Both tech A and B |
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Technician A says that welds made far inward from the flange require less current than welds on the flange. Technician B says that a magnetic field is flowing through the arm sets whenever the machine is turned on. Who is correct? |
Neither tech A or B |
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Cleaning the E-coat of the mating surface flanges at the first weld site is: |
An alternative to using a shunt clamp. |
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Welds bonding refers to using: |
A combination of welds and adhesives. |
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All of these are reasons why vehicle makers recommend weld bonding EXCEPT: A. Reduces noise, vibrations, and harshness. B. Requires fewer replacement welds C. Adds to corrosion resistance D. Combines advantages of both processes |
B. Requires fewer replacement welds |
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Technician A says that preparing the existing panel for weld bonding may require grinding weld nuggets flush. Technician B says that preparing the existing panel for weld bonding may require straightening the flange. Who is right? |
Both tech A and B |
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All of these are typical characteristics of adhesives selected for weld bonding EXCEPT: A. Electrically conductive B. Bond line easily controlled C. Two part D. Corrosion resistant |
A. Electrically conductive |
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Technician A says that when preparing the exterior of the flanges for weld bonding, the usual recommendation is to remove the zinc coating. Technician B says that when preparing mating flanges for weld bonding, the usual recommendation is to remove the zinc coating. Who is right? |
Both tech A and B |
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The first step when preparing a new cartridge of two part adhesive is to: |
Level the plungers |
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Technician A says that a peel destructive test is recommended for weld bond test samples. Technician B says that a twist destructive test is recommended for weld bond test samples. Who is correct? |
Technician A |
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One of the most common vehicle maker recommendations when making repair spot welds is to: |
Avoid original locations |
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Technician A says that spot welding while the adhesive is still wet is more difficult than waiting until the adhesive has cured. Technician B says that minor burning of the adhesive when weld bonding should not affect the integrity of the bond. Who is correct? |
Technician B |
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Based on the Chrysler Group "Governing Metal Thickness" recommendation, the weld nugget diameter on a three thickness flange is based on the: |
Middle thickness of the three panels. |