铸铁焊补时,减少待焊面上的含碳量,将会有效地防止渗碳体的产生,保证焊接区的可切削加工性。下面介绍三种待焊面的除碳方法,供同行们参考。1.采用大号焊嘴,使用高氧化焰对待焊面进行灼烧。火焰要缓慢地、尽可能贴近待焊面,这样往复多次。与此同时,应用钢丝刷不断地进行刷扫,使因灼烧而变得松散、并与基体脱离的石墨得到清除,以减少待焊面上的含碳量。 Cast iron welding, reducing the carbon content to be welded surface, will effectively prevent the occurrence of cementite, welding area to ensure machinability. Here are three kinds of welding surface to be carbon removal method for your colleagues for reference. 1. Using a large nozzle, the use of high oxidation flame treatment of welding surface burning. Flame slowly, as close as possible to be welded, so reciprocating many times. In the meantime, brushing should be carried out continuously with a wire brush to remove the burning of the graphite and remove graphite from the substrate to reduce the carbon content of the surface to be welded.