由于铸铁具有良好的减震性和耐磨性,容易则加工,成本低廉,所以,在机械零件的制造中得到广泛的应用。但是它的耐腐蚀防锈性能却很差,减摩性也远不及铜合金。铜合金的防腐、减摩性虽然好,但是由于价格贵、产量少而使其应用受到限制。如果在铸铁表面喷焊一层铜合金,则可发挥各自优点,且可获得良好的综合性能。这个设想虽好,但多年来,一直因铸铁喷焊铜合金困难较大而未能实现。一、铸铁表面喷焊铜合金的困难热喷涂用的铜合金粉末,因自熔性较差,所以,用一般方法喷焊于铸铁 As cast iron has good shock absorption and wear resistance, easy processing, low cost, so in the manufacture of mechanical parts has been widely used. However, its corrosion resistance is very poor anti-rust properties, anti-friction is also far less than copper alloy. Copper alloy corrosion, although the friction reduction is good, but due to the expensive, less output and its application is limited. If you spray a layer of copper alloy cast iron surface, you can play their own advantages, and get a good overall performance. This idea is good, but over the years, it has been difficult to achieve due to the difficulty of cast iron welding copper alloy. First, the cast iron surface spray copper alloy difficult Spray copper alloy powder, due to poor self-flux, so the general method of spray welding cast iron