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容器接管马鞍形焊缝的焊接,国内过去都采用手工焊,工作量大、效率低、劳动条件差、质量不易保证、返修率高。针对容器正交插入式接管管座的焊接,研制了MZM—500型马鞍形埋弧焊机,拟定了自动焊工艺,并成功地进行了400T/h 电站锅炉汽包下降管管座的自动焊生产。MZM—500型焊机适用于简身直径≥1400mm,接管外径=420～820mm,内径≥320mm,接管高度=200～500mm 的马鞍形焊缝的焊接。容器接管马鞍形焊缝的埋弧自动焊,与手工焊相比,可提高生产率1～2倍,降低了工件预热温度,改善了劳动条件,焊缝质量也易于保证.
Container to take over the welding of saddle-shaped welds, the domestic use of manual welding in the past, heavy workload, low efficiency, poor working conditions, quality is not easy to guarantee, the repair rate is high. In view of the welding of container orthogonally inserted pipe socket, the MZM-500 saddle submerged arc welding machine was developed, the automatic welding technology was drafted, and the automatic welding of the steam drum descending pipe socket of 400T / h boiler station was successfully carried out. produce. MZM-500 welder is suitable for the welding of saddle-shaped welds of simple diameter ≥1400mm, outer diameter of takeover = 420 ~ 820mm, inner diameter of ≥320mm, takeover height = 200 ~ 500mm. Compared with the manual welding, the container can take over the saddle-shaped weld submerged arc welding, which can increase the productivity by 1 to 2 times, reduce the preheating temperature of the workpiece, improve the working conditions and ensure the quality of the weld seam.