科研之友
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摘要
Four passes were performed in the welding process of a 700-mm diameter pipe and 1800 x 1800-mm size steel sheet with a hole for the pipe. Welding defects were simulated by embedding artificial defects at the root of the welded seam (pores, cracks, slag, faulty fusions, and titanium inserts) and violating the welding procedure. The quality of the welded connection during the welding process was evaluated by the acoustic-emission method. After the completion of the welding the specimen underwent ultrasonic and radiographic inspection.
- 出版日期2015-9
