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研究了Ｃｒ－Ｗ－Ｖ和Ｃｒ－Ｍｏ－Ｖ堆焊金属在热疲劳试验过程中组织的变化行为以及化学成分和组织对耐热疲劳性能和耐磨性能的影响，并制定了合理可行的夹送辊和助卷辊的堆焊工艺。研究结果表明，起弥散强化作用的钨的碳化物在热疲劳试验过程中易于聚集长大，从而降低热疲劳强度；在Ｃｒ－Ｍｏ－Ｖ堆焊金属中加入小于１％的镍，会提高热疲劳性能，但加入过多的镍则显著降低相变温度（Ａｃ１），并对耐磨性不利；基体组织为均一、稳定的板条马氏体，且在其上分布着弥散、稳定的钒的碳化物，有利于抗热疲劳和抗磨损
The effects of chemical composition and microstructure on the thermal fatigue resistance and wear resistance of Cr-W-V and Cr-Mo-V hardfacing metals during thermal fatigue test were studied. And a reasonable and feasible clamp Roller and roll help roll surfacing process. The results show that the tungsten carbides that play the role of dispersion strengthening tend to aggregate and grow during the thermal fatigue test, thus reducing the thermal fatigue strength; adding less than 1% nickel to Cr-Mo-V surfacing metals increases the heat However, the addition of too much nickel reduced the phase transition temperature (Ac1) remarkably and was unfavorable to the wear resistance. The matrix microstructure was homogeneous and stable lath martensite, and dispersed and stable vanadium The carbide, is conducive to thermal fatigue and wear resistance