Effect of Welding Velocity on Properties of Welding Joint of Austenitic Stainless Steel
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摘要: 对3 mm厚304奥氏体不锈钢板进行了熔化极气体保护焊接(MIG)试验。在焊接中发现,在适当范围内提高焊接速度有利于减小焊缝和热影响区宽度,增加接头强度的稳定性;但是焊接速度过快会导致焊缝区气孔的产生,从而降低接头强度的稳定性和耐蚀性。通过控制焊接速度可以保证304奥氏体不锈钢焊接接头具有良好的力学性能和良好的耐腐蚀性能。Abstract: The MIG welding research on 304 austenitic stainless steel plates with 3 mm thick was carried out.The results showed,fast welding velocity is benefit to enhancing joint's quality,because faster welding velocity may help to reduce the region of welding seam and heat affect zone.But too fast welding velocity is not good because of the produce of pores,and the joints will suffer from low strength stability and poor anti-corrosion.Appropriate welding velocity will keep 304 austenite stainless steel welding joints having good mechanical properties and corrosion resistance.
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Key words:
- austenitic stainless steel /
- MIG welding /
- welding process /
- welding seam /
- mechanical properties
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