Doing stuff with Oxyacetylyene

Which one of these processes requires the metal to be the hottest?

• Welding

• Brazing

• Soldering

• Heating

This process uses a filler rod made of a nonferrous material, usually bronze.

• Soldering

• Welding

• Brazing

• Annealing

Soldering AKA "sweating" is used a lot for:

• Fusing pieces of steel together

• Joining copper pipes

• Making butt welds

• Manufacturing mayonnaise

When metal is heated or cooled, the ____ of the metal changes.

• characteristics

• weight

• atomic number

• type

If you need to bend metal thicker than 3/8", you should __ it first

• anneal

• weld

• solder

• heat

Brazing usually happens at temps of at least______ degrees F.

• 800

• 2000

• 300

• 1000

Before soldering, you must clean the metal with ____

• a rag

• flux

• soap and water

• gasoline

The metal is ready to bend when it is _______.

• molten

• cherry red

• white

• blue

When you harden metal, it becomes: (Select all that apply)

• stronger

• brittle

• less ductile

• softer

• easier to bend

______ is a process that reduces the brittleness of hardened steel.

• Annealing

• hardening

• tempering

• welding