【作者】 马跃进； 郝建军； 李会平；

【Author】 Ma Yuejin Hao Jianj un Li Huiping (Hebei Agricultural University )

【机构】 河北农业大学机电工程学院； 河北农业大学林业资源与工程学院；

【摘要】 为解决根茬粉碎还田机灭茬刀成本高、寿命短的问题,在45#钢制作的根茬还田刀具易磨损部位喷焊了NiWC合金抗磨涂层,通过正交试验和方差分析分析了试验因素对喷焊层耐磨性的影响程度大小依次为WC的含量、乙炔流量、预热温度和喷涂距离。优化了获得优良强化层的喷焊工艺参数为:涂层配比为Ni60+35%WC,预热温度为450℃,乙炔流量为1000L/h,喷涂距离为40mm。更多还原

【Abstract】 In order to solve a problem that the Machine for Chopping and Returning Stubble into Soil high-priced and short- lifetime, wear-resistance coating was made on the substrate of 45# steel by flame spraying and remelting NiWC alloy. By means of orthogonal test and multiple factors variance analysis, how the test factors influence wear-resistance was studied, and the influence from high to low is the content of WC, the acetylene flow, the preheat temperature and the spraying distance. The technology parameters of flame spraying and remelting NiWC alloy. was optimized as follows: coating matching,Ni60+35%WC; Preheat temperature,450 ℃;acetylene flow,1000 L/h; spraying distance,40 mm.更多还原