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The X-ray detection of Q355B steel laser-arc welded joint: (a) 8°-0.5 mm; (b) 8°-1.0 mm; (c) 8°-1.5 mm; (d) 12°-1.0 mm; (e) 12°-1.5 mm.
Source publication
Thick plate steel structure is widely used in the construction machinery, pressure vessels, ships, and other manufacturing fields. To obtain an acceptable welding quality and efficiency, thick plate steel is always joined by laser-arc hybrid welding technology. In this paper, Q355B steel with a thickness of 20 mm was taken as the research object, a...
Contexts in source publication
Context 1
... to the heat input of the laser and the arc hybrid source, the grain structure at the HAZ was a bit more than that of the BM [26][27][28]. The X-ray detection results of Q355B steel joints welded at different process parameters are shown in Figure 6. Almost no welding defects, such as non-fusion and inclusion, were observed in the whole weld seam, except that a few welding defects formed at the beginning and end of the weld seam. ...
Context 2
... X-ray detection results of Q355B steel joints welded at different process parameters are shown in Figure 6. Almost no welding defects, such as non-fusion and inclusion, were observed in the whole weld seam, except that a few welding defects formed at the beginning and end of the weld seam. ...
