氧—乙炔火焰喷焊是五十年代发展起来的一种新的表面硬化工艺。为了满足各种工件表面喷焊层性能的要求,国外发展了各种各样的合金粉末。较典型的是镍铬硼硅合金系列,其中用得最多的是铬、硼、硅含量较高的一种合金,它的熔点低,硬度高,自熔性好,无论在耐金属间磨损及低应力磨粒磨损方面,还是耐热、耐蚀及抗氧化方面,都显示出很好的效果。 Oxygen - acetylene flame spray welding developed in the 1950s a new surface hardening process. In order to meet the performance requirements of various workpiece surface spray coating, a variety of alloy powders have been developed abroad. More typical is the series of nickel-chromium-boron-silicon alloy, of which the most used is chromium, boron, a higher silicon content of an alloy, which has low melting point, high hardness, good self-fluxing, Low stress abrasive wear, or heat, corrosion and oxidation, have shown good results.