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解决不锈钢薄板焊接时烧穿、变形的主要措施有哪些

来源:http://www.kazinobg.com/  发布时间:2022-02-17 浏览次数:

解决不锈钢薄板焊接时烧穿、变形的主要措施有:

The main measures to solve the burn through and deformation of stainless steel sheet during welding are as follows:
1、严格控制焊接接头上的热输入量?选择合适的焊接方法和工艺参数(主要有焊接电流、电弧电压、焊接速度)。
1. Strictly control the heat input on the welded joint? Select appropriate welding methods and process parameters (mainly including welding current, arc voltage and welding speed).
2、通常对薄板焊接一般采用较小的喷嘴,但我们建议尽量采用大的喷嘴直径,这样使焊接时的焊缝?;っ娲笠恍?,能较长时间隔绝空气,使用寿命长。
2. Generally, small nozzles are used for thin plate welding, but we suggest to use large nozzle diameter as much as possible, so as to make the weld protection surface larger, isolate the air for a long time and have a long service life.
3、用φ1.5铈钨极棒,磨削的尖度要更尖,且使钨极棒伸出喷嘴的长度应尽量长些,这样会使母材更快的熔化,也就是说熔化温度上升更快,温度会更集中,能使我们对需要熔化的位置尽可能快的熔化,且不会让更多的母才温度上升,这样使材料的内应力发生变化的区域变小,也使材料的变形也会减少。
3. Use φ 1.5 for cerium tungsten rod, the grinding sharpness should be sharper, and the length of the tungsten rod extending out of the nozzle should be as long as possible, which will make the base metal melt faster, that is, the melting temperature rises faster and the temperature will be more concentrated, so that we can melt the position that needs to be melted as quickly as possible without raising the temperature of more base metals, In this way, the area where the internal stress of the material changes becomes smaller, and the deformation of the material will also be reduced.
4、装配尺寸力求准确,接口间隙尽量小。间隙稍大容易烧穿,或形成较大的焊瘤。
4. The assembly dimension shall be accurate and the interface clearance shall be as small as possible. If the gap is slightly larger, it is easy to burn through or form large weld bead.
5、需要采用夹具?夹紧力平衡均匀。焊接不锈钢薄板关键要注意:严格控制焊接接头上的线,力求在能完成焊接的前提下尽量减小热量输入,从而减小热影响区,避免上述缺陷的出现。
5. Fixture required? The clamping force is balanced and uniform. Key points for welding stainless steel sheet: strictly control the line on the welded joint, and strive to minimize the heat input on the premise of completing the welding, so as to reduce the heat affected zone and avoid the above defects.
6、选择合理的焊接顺序,对于控制焊接残余变形尤为重要,对于对称焊缝的结构,应尽量采用对称焊接;不对称的结构,则采用先焊焊缝少的一则,后焊焊缝多的一侧。使后焊的变形足以拟消前一侧的变形,以使总体变形减小。
6. Selecting a reasonable welding sequence is particularly important for controlling welding residual deformation. For the structure of symmetrical weld, symmetrical welding should be used as far as possible; For asymmetric structures, the one with less welds shall be welded first, and then the side with more welds shall be welded. The deformation of post welding is enough to eliminate the deformation of the front side, so as to reduce the overall deformation.
7、不锈钢薄板用激光焊0.1MM都可以焊接。激光光点大小任意调节?能够很好的把控。变形比本上也是没有的。
7. Stainless steel sheet can be welded by laser welding with a diameter of 0.1mm. Can the size of laser spot be adjusted arbitrarily? Can control well. There is no deformation ratio in this book.

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