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    高鉻鎳合金鋼管的焊接工藝

    Welding Process of Hi-Chromium-Nickel Alloy Steel Pipe

    • 摘要: 從理論上分析了化工生產(chǎn)裝置上使用瑞典產(chǎn)的高鉻鎳合金鋼管(904L)的耐蝕性,904L合金鋼完全具備較高的耐晶間腐蝕、點(diǎn)蝕和耐應(yīng)力腐蝕斷裂能力。介紹了其焊接環(huán)境要求、坡口形式以及工藝規(guī)范,焊接的工藝措施及焊后檢查。該焊接操作工藝對(duì)高鉻鎳合金鋼管焊接生產(chǎn)有指導(dǎo)意義。

       

      Abstract: A theoretic analysis is conducted relating to the corrosion-resistance of the Sweden-made hi-chromium-nickel alloy steel (904L) pipe as used on some kind of chemical industrial equipment. The conclusion is that the said 904L steel is in possession of rather high resistance against intergranular corrosion, corrosive pitting and stress corrosion-caused fracture. Described here in the paper is the welding process of the said steel pipes, covering the welding condition requirements, the bevel shape and related technological criteria as well as the welding tips and post-welding inspection, etc. The welding procedure as introduced by the author can be used as a guideline for welding operation of hi-Cr-Ni alloy pipes.

       

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