[目的]分析软硬涂层刀具材料与木质复合材料的摩擦特性,为涂层硬质合金木工刀具的磨损及切削性能研究提供实践指导.[方法]测试TiN硬涂层硬质合金、MoS2软涂层硬质合金和未涂层硬质合金与木质复合材料的摩擦系数及磨损前后的粗糙度变化,研究涂层刀具材料与木质复合材料的摩擦特性.[结果]MoS2软涂层硬质合金与中密度纤维板(MDF)、刨花板(PB)和木粉/PE复合材料(WFPEC)的摩擦系数明显低于未涂层硬质合金和TiN硬涂层硬质合金,且TiN硬涂层硬质合金低于未涂层硬质合金;PB与未涂层硬质合金、TiN硬涂层硬质合金和MoS2软涂层硬质合金的摩擦系数明显低于MDF和WFPEC,且WFPEC低于MDF;未涂层硬质合金、TiN硬涂层硬质合金和MoS2软涂层硬质合金与MDF和PB的摩擦试验中,随着载荷增加,摩擦系数逐渐增大,而与WFPEC的摩擦试验中,随着载荷增加,摩擦系数没有明显变化趋势;与MDF磨损试验前后,未涂层硬质合金磨损表面粗糙度变化率最大,MoS2软涂层硬质合金表面粗糙度变化率其次,TiN硬涂层硬质合金表面粗糙度变化率最小.[结论]TiN硬涂层材料和MoS2软涂层材料可有效降低与木质复合材料的摩擦系数,且MoS2软涂层硬质合金摩擦系数低于TiN硬涂层硬质合金,而TiN硬涂层硬质合金耐磨性能优于MoS2软涂层硬质合金.%[Objective]The tribological properties of coating materials and wood-based composites were analyzed, which can provide practical guidance for the research on wear and cutting performance of coated carbide cutting tools.[Method]The effects of the coated cutting tool and wood-based materials on the tribological properties were investigated by examining how TiN and MoS2 coated cemented carbide behavior in sliding when in contact with wood-based composite materials,respectively,and by comparing their behaviors with those of uncoated cemented carbide.[Result]The results showed that the friction coefficients of MoS2 coated cemented carbide with MDF,PB and WFPEC,respectively,were significantly lower than those of uncoated cemented carbide and TiN hard-coated cemented carbide,and that of the TiN coated cemented carbide was the lowest. The friction coefficients of PB with uncoated cemented carbide,TiN and MoS2 coated,respectively,were significantly lower than those of MDF and WFPEC,and that of WFPEC was the lowest. In the friction test of uncoated cemented carbide,TiN and MoS2 coated cemented carbide with MDF and PB,respectively,the friction coefficients increased with the increase of load. However,in the friction test of WFPEC,the friction coefficients exhibited independent with load. The change rate of the surface roughness for uncoated cemented carbides was the highest before and after the MDF friction test,followed by the MoS2 coated cemented carbide,and the smallest change rate of the surface roughness was found in the TiN coated cemented carbide.[Conclusion]Both TiN and MoS2 coating materials could effectively reduce the friction coefficients of tool materials and wood-based composite materials,and the friction coefficient of MoS2 coated cemented carbide was lower than that of TiN coated cemented carbide. The wear resistance property of TiN coated cemented carbide was becter than that of MoS2 coated cemented carbide.
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