Exam 18: Oxyacetylene Welding

One of the characteristics of a(n) ____ joint is that one side of the metal will melt faster.

Heat is not distributed uniformly in the ____ joint.

An increase in sparks on clean metal means a decrease in weld temperature.

A(n) ____ weld is the most common out-of-position weld that a welder is required to perform.

Sometimes with small diameter drill bits you are better off using your hand to tighten the chuck rather than using a chuck key because if the bit grabs and the chuck was tightened with a chuck key, the bit may break.

An advantage of gas welding is that by changing the size of the tip you can change the welding ____________________.

It is permissible to lower the size of the torch flame when the correct tip size is unavailable.

The ideal angle for the welding torch is ____ degrees.

____________________ is the depth into the base metal that the weld fusion or melting extends from the surface, excluding any reinforcement.

It is considered good practice in the field to stop a weld at the corner of a joint.

The flat ____ joint can be made with or without the addition of filler metal. This joint is one of the easiest welded joints to make.

____ is the easiest metal to gas weld.

Changing the torch angle changes the percentage of heat that is transferred into the metal.

The ____ joint is made when one piece of metal is laid over the edge of another.

During the welding process, the more frequently you add filler metal, the larger the weld will be.

A(n) ____ joint is made by aligning the edges of two pieces of flat metal together so they are next to each other.

To prevent burnthrough, a torch should be raised or tilted, keeping the outer flame envelope over the molten weld pool until it solidifies.

A problem that is unique to the ____ joint is that a large percentage of the welding heat is reflected back on the torch.

For small welding jobs and for hobbyists, ____________________ welding is often the best welding method for thin metal and small parts because it is so easy to control the flame heat.

With the ____ metal, it is possible to make welds with 100% integrity.