Welding defect issues in the circumferential welds of pressure vessel heads
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Today, our team discussed the welding defects in the circumferential seams of pressure vessel heads; pores are the most common issue. Even some experienced workers couldn’t come up with any effective solutions. Does anyone have any good suggestions? For example, it can cover various aspects such as groove opening and the manufacturing process. Thank you~~~
This post was last edited by qilupzh on 2011-3-28 at 18:48. Have you shared the actual reasons for the formation of pores? The circumferential joint is welded by submerged arc welding; therefore, it is necessary to maximize the drying of the weld area and to clean the groove and its surrounding areas thoroughly.
The flux and welding wire must be dry; the flux needs to be dried, and the groove and its surrounding area should be cleaned thoroughly. The welding current should not be too high.