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利用自制的热冲击磨损试验设备，通过模拟小口径深孔阀门密封面的受力状态，测试了用于阀门密封面的三种焊层：激光熔覆ＷＦ１４１合金层，手工电弧堆焊Ｄ５７４Ｍｏ合金层和手工电弧堆焊丝１１１合金层的高温磨损性能。采用金相显微镜、扫描电镜和洛氏硬度计等对焊层的组织、表面磨损形貌和硬度进行了研究。结果表明，激光熔覆ＷＦ１４１合金层因其致密细小的枝晶组织和晶间鱼骨状共晶组织的存在，确保了焊层的高硬度值，在高温磨损的条件下显示出极高的塑性变形抗力，是三种焊层中耐高温磨损最优异的焊层。
By using the self-made thermal shock and wear testing equipment, three kinds of welding layer for the valve sealing surface were tested by simulating the stress state of the sealing surface of the small-bore deep-hole valve: laser cladding WF141 alloy layer, manual arc welding D574Mo alloy layer And manual arc welding wire 111 alloy layer high temperature wear properties. The microstructure, surface morphology and hardness of the welding layer were studied by using metallographic microscope, scanning electron microscope and Rockwell hardness tester. The results show that the laser cladding WF141 alloy layer due to its dense dendrite and intergranular fish bone eutectic structure, to ensure that the high hardness of the weld layer, showing high plasticity under high temperature wear conditions Deformation resistance, is the best of the three kinds of welding layer of high temperature wear resistance of the welding layer.