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球墨铸铁的焊接较为困难,因为焊接后焊缝气孔多,既硬又脆,不能加工。因此,我厂球铁件虽较普遍,但一直没有开展球铁件的焊接工作。对于必要的球铁铸造缺陷补焊工作是用价昂稀有的镍铬焊条或镍铜焊条和磷青铜焊条。推优运动中我们用其他类型的焊条配合工艺条件作多次试验,最后取得成功。试验用焊机:BS—330交流电焊机工件:20×20毫米球铁刀杆焊接和补焊
Ductile iron welding is more difficult, because the welding seam porosity, both hard and brittle, can not be processed. Therefore, I plant the ball iron pieces although more common, but has not been carried out ductile iron welding work. For the necessary ductile iron casting defects welding work is expensive nickel-chromium welding electrodes or nickel-copper electrodes and phosphor bronze electrodes. We use the other types of welding rod with the best conditions for the process conditions for multiple tests, the final success. Test with a welding machine: BS-330 AC welder Workpiece: 20 × 20 mm ball arbor Welding and welding