Welding Technology of SA904L S teel Plate

Journal of Liaoning Petrochemical University ›› 2005, Vol. 25 ›› Issue (2): 50-53.

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Welding Technology of SA904L S teel Plate

1.Liaoning University of Petroleum & Chemical Technology , Fushun Liaoning 113001, P .R .China ;
2.Jilin Qifeng Chemical Fiber Co ., Ltd ., J ilin Jilin 132115 , P .R .China ;
3 .Fushun Machinery Petrochemical Equipment Co ., Ltd ., Fushun Liaoning 113015, P .R .China ;
4.Fushun Mechanical manufacturing Co ., Ltd ., Fushun Liaoning 113006, P .R .China ;

Received:2004-08-24 Published:2005-06-20 Online:2017-04-18

SA904L 钢板焊接工艺

高　磊¹ , 陈天平¹, 赵显全², 赵玉红³ , 吴振林⁴ , 周　力⁴, 任立阳⁴

1 .辽宁石油化工大学, 辽宁抚顺113001 ;
2 .吉林奇峰化纤有限公司, 吉林132115 ;
3.抚顺机械石油化工设备有限公司, 辽宁抚顺113015 ;
4 .抚顺机械制造有限公司, 辽宁抚顺113006

作者简介:高磊(1962 -), 女, 辽宁抚顺市, 教授。

Abstract

Abstract:

　 A company manufactured an acetic acid removal column reboiler which yielded 4 ×104 t M TPY of differential acrylic fibers for Jilin Qifeng Chemical Fiber Group Co ., Ltd ..The equipment consists of pipe box , shell and pipe bundles.Medium of pipe path is DMAC+AA , which has strong corrodibility .Therefore , the stainless steel plate of 904L is chosen.It is a kind of high alloy steel and has poor weldability .It is easy to generate hot crack, intercrystalline corrosion and stress corrosion crack , especially difficult to control crater crack.According to the generating principle of hot crack , intercrystalline corrosion and stress corrosion crack , this kind of steel' s weldability was analyzed , and a sample of welding techno logy experiment was dissected.Metallogenetic examination and the machine performance test were made.As a result , an appropriate welding specification is found out .

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Key words: 　904L, Nickel-based alloy , Welding

摘要： 某公司为吉林奇峰化纤有限公司年产4×10⁴t 差别化腈纶技术改造项目承接制造一台醋酸去除塔再沸器。该设备由管箱、壳体和管束等部分构成, 管程的介质为DMAC+AA(二甲基乙酰氨+醋酸)具有较强的腐蚀性,为此, 选用了904L 超低碳高铬镍奥氏体不锈钢板, 该钢种属高合金钢, 焊接工艺性较差, 焊接热裂纹、晶间腐蚀、应力腐蚀开裂问题非常严重, 特别是弧坑裂纹难以控制。从热裂纹、晶间腐蚀、应力腐蚀开裂的产生原理出发, 对该钢种的可焊性进行分析, 并对工艺性试验试板解剖, 进行金相观察和机械性能检验, 从而找出了合适的焊接规范。

关键词: 　904L, 　镍基焊材, 　焊接

GAO Lei，CHEN Tian -ping，et al. Welding Technology of SA904L S teel Plate[J]. Journal of Liaoning Petrochemical University, 2005, 25(2): 50-53.

高　磊1, 陈天平,赵显全,等. SA904L 钢板焊接工艺[J]. 辽宁石油化工大学学报, 2005, 25(2): 50-53.

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Welding Technology of SA904L S teel Plate

SA904L 钢板焊接工艺

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