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45 # steel surface , flame spraying the substrate preset WC/12Co powder , and single- channel and multichannel lap experimental study through a different process parameters . By means of optical microscopy, scanning electron microscopy , X - ray diffraction , micro hardness tester and friction and wear testing machine laser cladding layer and flame spray coating alloy element distribution system , organizational structure, microhardness and friction and wear characteristics research . The study results show that : the macro quality can be obtained in the optimization of the process parameters under the conditions of the laser cladding WC/12Co powder intact , no cracks, holes and other defects , and combined with the base takes the shape of metallurgical cladding layer ; Laser Cladding and WC/12Co have different degrees of hardness than the base material of the powder improve the wear resistance of 10.5 times and 4.0 times respectively ; laser cladding layer is closer than flame spraying layer organization , higher quality cladding .
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