| ASTM A240 304H不锈钢SMAW焊接性 |
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| 引用本文： | 张学武,韩知音,占军,刘朋奇.ASTM A240 304H不锈钢SMAW焊接性[J].电焊机,2017,47(7). |
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| 作者姓名： | 张学武 韩知音 占军 刘朋奇 |
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| 作者单位： | 中核霞浦核电有限公司,福建霞浦,355100 |
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| 摘 要： | 针对ASTM A240 304H不锈钢含碳量高的特点,采用E308L焊接304H不锈钢并进行焊接性分析,通过分析得出焊缝FN=8,Creq/Nieq=1.7,焊缝具有良好的抗热裂纹能力,铁素体的存在有利于晶间腐蚀。但是碳含量过高,需要通过限制焊接热输入、层间温度来缩短敏化区停留时间,同时提出了焊接补充措施。
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| 关 键 词： | 304H不锈钢 SMAW焊接 热裂纹 晶间腐蚀 |
SMAW weldability of ASTM A240 304H stainless steel |
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| ZHANG Xuewu,HAN Zhiyin,ZHAN Jun,LIU Pengqi.SMAW weldability of ASTM A240 304H stainless steel[J].Electric Welding Machine,2017,47(7). |
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| Authors: | ZHANG Xuewu HAN Zhiyin ZHAN Jun LIU Pengqi |
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| Abstract: | According to ASTM A240 304 h stainless steel of the high carbon content,weld 304H stainless steel with E308L and analyze the weldability.The welds FN=8 and Creq/Nieq =1.7 are obtained through analysis,weld seam has good thermal crack,ferrite is beneficial to intergranular corrosion.However,the carbon content is too high,so it is necessary to shorten the sensitization lingering time by limiting the welding heat input and the interpass temperature.At the same time,additional welding measures are proposed. |
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| Keywords: | 304H stainless steel SMAW welding hot crack intergranular corrosion |
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