Exam 7: Flame Cutting Equipment, Setup, and Operation

Acetylene is used in tips having ____ preheat holes.

To obtain the absolute pressure, ____.

Describe how the welder should be positioned when hand cutting.

____________________ slag is attached solidly to the bottom edge of a cut and requires chipping and grinding to remove.

The distance from the inner cones of the flame to the surface of the plate is known as the ____________________ distance.

The ____________________ is the lowest temperature at which a material will burn.

Most fuel gases used for welding are ____________________.

Acetylene is produced by mixing ____.

If an excessive amount of preheat flame is used, ____.

The kindling temperature of iron is ____.

To start a cut on the edge of a plate, ____.

A homogeneous mixture of 50% acetylene and 50% oxygen has a burn rate of ____ feet per second.

The number of preheat holes determines the ____.

Explain the procedure for testing leaks around a valve stem.

The purpose of the ____ valve is to prevent gases from accidentally flowing through the torch and into the wrong hose.

What is the finished flame product of reducing oxyhydrogen?

The mixing chamber may be located in ____.

Oxygen manifolds must be at least ____ feet away from fuel gas manifolds.

Most hand torches will not easily cut metal that is more than ____ inches thick.

A molecule of propane is made up of ____.