【摘要】 为了探索涡轮叶尖端部型腔涂层的制备工艺,以堆焊用镍基合金焊条加工成的粉末为原材料,分别采用激光熔覆及氩弧堆焊技术,在铸造镍基合金试样表面上制备涂层.结果表明:激光熔覆涂层在成型性上优于堆焊涂层,激光熔覆涂层的组织细小致密,硬度高于堆焊涂层的硬度;在涡轮叶尖上进行激光熔覆涂层工艺探索也获得成功.更多还原

【Abstract】 In order to research a model structure coating on turbine blade tip,a laser cladding coating and an argon-arc surfacing welding coating were deposited on surface of casting Ni-base alloy samples.A kind of powder made of Ni-base alloy surfacing welding rod was used in laser cladding technology.The experimental results indicate that the material forming of the laser cladding coating is better than that of the argon-arc surfacing welding coating.The microstructure of laser cladding coating is fine and dense.The hardness of laser cladding coating is higher than that of surfacing welding coating.By means of laser cladding technology,a model structure coating was deposited on turbine blade tip.更多还原