LW3-1导管架腿乙二醇储罐热喷铝工艺  

Thermal spraying aluminum process for lean glycol storage tank in LW3-1 jacket legs

作　　者：马桂君[1] 王长军[1] 曼得拉.查汗 易桂虎[1] 王伊诺 

机构地区：[1]海洋石油工程(青岛)有限公司,山东青岛266520

出　　处：《电镀与涂饰》2014年第10期425-428,共4页Electroplating & Finishing

摘　　要：讨论了 LW3-1导管架腿贫乙二醇（MEG）储罐热喷铝工艺表面处理要求和影响热喷铝质量的因素，总结了施工过程中出现的质量问题，包括焊缝处起皮、环板涂层脱落、附着力未达要求等，提出了相应的解决方案：增加环板焊缝打磨和内部缺陷打磨工艺，以消除钝化层和表面缺陷的影响；采用16#氧化铝喷砂增大表面粗糙度；采用大功率通风机减少施工过程中粉尘的影响；改变喷涂方式，加强设备检查和工人培训等。通过采取以上措施，有效地提高了热喷铝的质量。MEG罐热喷铝涂层厚度在180-300μm之间，附着力单点测试值在7 MPa以上，平均值在9 MPa以上。The requirement of surface treatment of thermal spraying aluminum process for lean glycol （MEG） storage tank in LW3-1 jacket legs and the factors influencing the quality of thermal sprayed aluminum were discussed. The quality problems existing in construction were summarized, including the peeling in weld bead, flaking-off of coating on annular plate, and poor adhesion. Some corresponding resolutions were presented： polishing the weld beads on annular plate and internal defects to eliminate the effect of passivation film and surface defect; sand blasting with No.16 alumina to increase the surface roughness;applying a high-power ventilator to decrease the effect of dust during construction;changing the spraying method;and enhancing the inspection of equipments and the training of workers. The thermal sprayed aluminum coating on MEG storage tank had a thickness ranging from 180 μm to 300 μm. The adhesion strength of the coating was higher than 7 MPa at single spot and 9 MPa averagely, indicating that the quality of thermal spayed aluminum was improved effectively.

关 键 词：导管架 乙二醇 储罐 防腐 热喷铝 涂层缺陷 

分 类 号：TQ639.8[化学工程—精细化工]