In next week’s article we will expand on this. When we are working as consultants we provide training and provide proper instructions in order to increase the probability of a successful plate test. When working strictly as a CWI we provide no guidance when taking these tests. Table 6.11 details the range of thickness qualified. It provides all the details on welding positions for welder performance qualification. In this case, the 1G (flat) position for a plate groove weld test will qualify the welder for 1G as well as 1F and 2F (horizontal and flat fillet welds).įor additional information see Table 6.10 of your AWS D1.1 (2020) code book. The qualified positions are based on the position used for testing. It is sometimes incorrectly assume that the 1G test described above qualifies the welder for all positions. Root and face bends showing no discontinuities. Procedures, technique and acceptance criteria for this type of test is provided in Clause 8 (Inspection) of AWS D1.1/D1.1M:2020 Structural Welding Code – Steel (Clause 6 if you are still using the 2015 edition). As stated previously, radiographic testing may be used in lieu of bend tests. Corner cracks may be the result of poorly prepared tests specimens.ģ. If a corner crack with no evidence of slag inclusion is present and exceeds ¼ in in length the test specimen is discarded and new specimen cut from the original test plate must be tested. If the crack is a result of slag inclusion then the maximum length cannot exceed 1/8 in. Corner cracks should not exceed ¼ in in length.Any single discontinuity exceeding 1/8 in constitutes a failure as seen in “a” above. Have no discontinuities greater than 1/32 in in length that combined add up to a total of more than 3/8 in.Not exhibit any discontinuities greater than 1/8 in in length.Be bent according to the specifications of the code (different bend radii are specified depending on the base metals yield strength).In order to pass weld soundness by bend tests the specimens must: Additional requirements apply for tests that have an open root (no backing).Undercut must not exceed 1/32 in in depth.The weld must not exceed 1/8 in reinforcement.Craters must be filled to the full cross section of the weld.
In order to pass visual inspection the weld must: Soundness is tested by performing bend tests or by radiographic inspection. In order for the welder to successfully pass this test, he or she must pass both visual inspection and meet the weld soundness acceptance criteria. It should be 1 in wide (3 in wide if it will not be removed when radiographic inspection is used for evaluating weld soundness in lieu of bend tests) and ¼ in to 3/8 in thick.
The backing bar should extend the length of the test plates or could be slightly longer to allow for a run-on and run-off tabs. Welder performance qualification test for limited thickness.
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