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AWS B4.0:2016 pdf free download
AWS B4.0:2016 pdf free download.Standard Methods for Mechanical Testing of Welds.
22.214.171.124 The nick-break test is used to evaluate the proper technique and welding parameters necessary to obtain sound groove or fillet welded joints in pipe or plate. The nick-break test is also used. on occasion, to verify (by destructive testing) results obtained by nondestructive techniques.
126.96.36.199 Nick-break tests are used to evaluate flash butt welds, pressure welds, or inertia (friction) welds.
188.8.131.52 No significance is attached to the magnitude of the load required for fracture.
184.108.40.206 Apparatus shall be capable of firmly supporting the specimen on one or both ends when fractured by use of a hammer (see Figures 9.1.1,9.1.2. and 9.1.3).
220.127.116.11 Tests may also be performed either by loading in tension or three point bending.
18.104.22.168 Specimens from Butt Welds. Nick-break specimens shall be prepared by cutting the joint and the base metal to form a rectangular cross section. The specimens may be either machine cut or flame cut. Edges shall be relatively smooth and parallel and shall be notched with a hacksaw or band saw or thin abrasive wheel (disc). Notches are located as shown in Figure 9.1 .4.
22.214.171.124 Full-Sized Spcclmciis. Small weld assemblies may be tested in their entirety using the complete assembly as the specimen. In those cases, the assembly shall be notched at the weld edges to a depth of approximately 1/8 in (3 mm) and across the reinforcement to a depth of approximately 1/16 in (1.6 mm) similar to that shown in Figure 9.1.4. These may be modified to suit individual assemblies, but the specimen configuration must be reported.
126.96.36.199 Specimens from Flash Butt Welds. Nick-break specimens shall be prepared by cutting the joint and base metal to form a rectangular cross section. The specimens shall be as shown in Figure 9.1.5 and may either be machine or flame cut or cm by other suitable means.
The sides of the specimen may be macroetched to locate the bond line. The sides of the specimen shall be notched along the bond line with a hacksaw, band saw, thin abrasive wheel (disk) or by other suitable means. Each notch shall be approximately 1/8 in (3 mm) deep. however, the depth of the notch shall not exceed lOg- of the weld thickness. The weld reinforcement need not be removed prior to notching. AWS B4.0:2016 pdf free download.
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