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一、概述铸铁的可焊性较差,目前广泛采用的铸铁焊补工艺方法主要是汽焊、电弧焊、钎焊,但是就这些工艺方法分析,由于材质不同,工作场地不同,工艺不同,所以还不同程度存在一定的局限性。如:汽焊热焊,焊工劳动强度大,生产效率低,操作复杂,而电弧冷焊由于大多采用镍基焊条和其他合金焊条,所以成本较高,而镍又是国家稀有金属,更重要的是冷
1. Introduction The poor weldability of cast iron is widely used. Currently, the widely used cast iron welding process methods are mainly steam welding, arc welding, and brazing. However, due to different materials, different work sites, and different processes, the analysis of these process methods is not necessary. There are also certain limitations to varying degrees. Such as: welding hot welding, welders labor intensity, low production efficiency, operation is complicated, and arc welding because of the majority of nickel-based electrodes and other alloy electrodes, so the cost is higher, and nickel is a national rare metal, more important It is cold