Exam 29: Welder Certification

The weld specimen must first pass visual inspection before it can be prepared for bend testing.

All welding jobs require that the welder be certified.

In a transverse ____________________ bend, the weld is perpendicular to the longitudinal axis of the specimen and is bent so that the weld face becomes the tension surface of the specimen.

The type of metal-such as steel, aluminum, stainless steel, and titanium-being welded will require a change in the certification.

For all welds, the welding bead will need to be restarted after a welder stops to change electrodes.

Changes in weld type such as groove or fillet welds do not require a new certification.

In a transverse ____________________ bend, the weld is perpendicular to the longitudinal axis of the specimen and is bent so that the weld root becomes the tension surface of the specimen.

A test taken in the ____ position would usually allow the welder to work in the flat, horizontal, and vertical positions, depending on the code requirements.

____ is the application of heat to the metal after welding. It is used to slow the cooling rate and reduce hardening.

Starting and stopping weld beads in corners should be avoided because this often results in defects.

When a weld bead is nearing completion, it should be tapered so that when it is restarted the buildup will be more uniform.

The Visual Inspection Criteria for Entry-Level Welders requires that the frequency of porosity shall not exceed one in each 4 in. (100 mm) of weld length, and the maximum diameter shall not exceed ____ in.

The Acceptance Criteria for Bend Test requires that the sum of the greatest dimensions of all indications on the surface which exceed 1/32 in. (0.8 mm) but are less than or equal to 1/8 in. (3.2 mm) shall not exceed _____ in.

A(n) ____________________ interpass temperature occurs when the weld bead cannot be controlled because of a slow cooling rate.

Welder certification can be divided into ____ major areas.

____ looks to see that the weld is uniform in width and reinforcement.

Being qualified or certified in one area of welding ensures that a welder can make quality welds in other areas.

The Visual Inspection Criteria for Entry-Level Welders requires that the undercut shall not exceed the lesser of ____% of the base metal thickness or 1/32 in. (0.8 mm).

The Acceptance Criteria for Bend Test requires that n o single indication shall exceed ____ in. measured in any direction on the surface.

A written test must be passed with a minimum grade of ____% on all areas except safety.