Write a step-by-step procedure sheet for preparing a bare steel repair area for refinishing.
What will be an ideal response?
Clean the surface with wax and grease remover.
? Sand with P80 to 150 grit sandpaper. (Do not sand with paper finer than P150 grit, or adhesion will be lost.)
? Re-clean with wax and grease remover.
? Using a scuffing pad, scrub the bare metal with the chemical cleaner.
? Rinse with water and dry.
? Scrub in the conversion coating, and keep it wet for the recommended time. Then rinse with water.
? Water should sheet off. Otherwise, reapplication of conversion coating is needed.
? Dry the surface, and apply corrosion protective primer
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The transformation of gneiss into mica, quartz, and feldspar crystals is an example of ________
A) physical weathering B) chemical weathering C) disintegration D) hydrolysis E) both A and C
What could happen if the meter leads were connected to the positive and negative terminals of the battery while the meter and leads were set to read amperes?
A) Could blow an internal fuse or damage the meter B) Would display 0.00 C) Would display OL D) Would read volts instead of amperes
Concrete normally attains its design strength in about _____
a. 14 days b. 21 days c. 28 days d. 30 days
Select the functions that the primary control performs. You may select more than one
A) controls ignition transformer B) starts and stops oil burner motor C) provides flame safety shutdown D) provides over temperature limit protection E) provides 24 volts to control external equipment