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利用前驱体碳化复合粉末制备技术,以蔗糖为碳的前驱体制备了等离子熔覆Fe-Cr-C-W-Ni复合粉末。采用等离子熔覆工艺,用该粉末在调质C级钢基材表面制备了高铬铁基复合涂层。测试了涂层在不同增强相含量、不同载荷和不同温度干滑动磨损条件下的耐磨性,并讨论了磨损机理。结果表明,由于涂层中硬质耐磨相(Cr,Fe)7C3的抗磨骨干作用,涂层在高温干滑动磨损条件下具有优异的耐磨性能。利用该技术在高速线材轧辊上使用效果明显。
The plasma-coated Fe-Cr-C-W-Ni composite powder was prepared by using precursor carbonized composite powder preparation technology and sucrose as carbon precursor. The plasma cladding process was used to prepare the high-chromium iron-based composite coatings on the surface of quenched and tempered C steel substrates. The wear resistance of the coatings was tested under different conditions of dry sliding wear with different reinforcing phases, different loadings and different temperatures. The wear mechanism was also discussed. The results show that the coating has excellent wear resistance under high temperature dry sliding wear conditions due to the antiwear wear effect of hard wearing phase (Cr, Fe) 7C3 in the coating. The use of high-speed wire rod on the roll with a clear effect.