Auto Body Repair Technology

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Quiz 13 :

Plastic Repair

Quiz 13 :

Plastic Repair

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Adhesives are usually used for repairing minor cuts and cracks in plastic parts.
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True False
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True

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A reliable means of identifying an unknown plastic is to make a weld rod adhesion test or a trial-and-error weld on a hidden or damaged area of the part.
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True False
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True

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When welding plastic, the welding rod must be compatible with the base material in order for the strength, hardness, and flexibility of the repair to be the same as the part.
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True False
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True

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____ are shaped to tack weld broken sections of plastic together before welding.
Multiple Choice
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Handheld ultrasonic welding systems are available in 60 and 80 kHz frequencies.
True False
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On long tears where backup is difficult, small ____ can be made to hold the two sides in place before doing the permanent weld.
Multiple Choice
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Airless plastic welding is almost obsolete now with nitrogen welding being the top choice of collision repair technicians.
True False
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____ are blends of different plastics and other ingredients designed to achieve specific performance characteristics.
Multiple Choice
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A _______ is perfect for holding broken tabs in place or tears on a plastic part in place while making repairs.
Multiple Choice
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All plastics can be welded.
True False
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____ uses heat and sometimes a plastic filler rod to join or repair plastic parts.
Multiple Choice
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It is environmentally unsound to burn plastics.
True False
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The process of drilling small holes along the edge of the repair tapered area is known as?
Multiple Choice
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____ relies on high-frequency vibratory energy to produce plastic bonding without melting the base material.
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Two-part adhesive systems consist of a base resin and a hardener (catalyst).
True False
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One of the problems with hot-air welding is that the plastic welding rod is often thinner than the panel to be welded.
True False
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____ uses a tool with an electric heating element to produce hot air (450° to 650°F or 232° to 345°C) that blows through a nozzle and onto the plastic.
Multiple Choice
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All of the following are examples of plastic parts EXCEPT:
Multiple Choice
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_______ uses a shielding gas around the weld site and allows for a noncontaminated weld.
Multiple Choice
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Two-part adhesive systems have not been accepted as an alternative to welding for many plastic repairs.
True False
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