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采用电阻缝焊方法对航天推进剂贮箱用0.086 mm厚不锈钢网片(022Cr17Ni12Mo2)和1 mm厚不锈钢支板(1Cr18Ni9Ti)进行搭接缝焊工艺试验,通过控制不锈钢支板变形量和网片变形张力,检查焊缝外观质量、密封性和内部质量,解决了接头组合材料厚度比大于10:1和焊缝宽度1~1.2 mm的不锈钢薄板缝焊难题。研究结果表明,采用合适工艺参数可以避免缝焊过程焊缝成型不良等问题,保证了焊缝密封性;采用专用工装对缝焊过程不锈钢支板变形进行控制和焊后校形处理,可有效控制不锈钢薄板焊接变形;通过缝焊过程网片表面张力的调节,达到了控制网片性能的目的。
Resistance seam welding method was used to test lap seam welding process of space propellant tank with 0.086 mm thick stainless steel mesh (022Cr17Ni12Mo2) and 1 mm thick stainless steel plate (1Cr18Ni9Ti). By controlling the deformation of stainless steel plate and mesh deformation Tension, check the appearance of the weld quality, tightness and internal quality, to solve the joint material thickness than 10: 1 and weld width of 1 ~ 1.2 mm stainless steel sheet seam welding problems. The results show that the suitable process parameters can avoid the problem of poor forming of the weld seam during the seam welding process and ensure the weld sealability. The special tooling can be used to control the deformation of the stainless steel support during the seam welding process and control the shape after welding Stainless steel sheet welding deformation; through the process of seam welding surface tension adjustment, to achieve the purpose of control mesh performance.