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在日常工作中,经常遇到铸铁与碳钢的焊接问题。谁都知道,铸铁与碳钢的性能是相差很大的,它们之间焊接的困难性在于容易产生裂缝。在实践中我们采用下述方法收到了较好的效果。焊前把铸件用砂轮或扁铲双面加工成45°坡口,然后用结423焊条把整个坡口焊满。第一层焊肉在1～2mm以内,施焊第二层时要用最小的电流(我们用ф2.5焊条时
In daily work, often encounter cast iron and carbon steel welding problems. Everyone knows that the performance of cast iron and carbon steel is very different, the difficulty of welding between them is easy to produce cracks. In practice, we use the following method has received good results. Before welding the castings with a wheel or flat shovel double-sided processing 45 ° bevel, and then use the junction 423 electrode welding the entire groove full. The first layer of welding meat within 1 ~ 2mm, the second layer of welding to use the minimum current (we use ф2.5 electrode