喷涂工艺也叫冷喷焊。由于对工件的热输入低,所以不会引起工件变形和附加应力,特别适合对磨损零件或加工过量零件的精密修补。但该工艺存在着涂层冷脱落及涂层表面硬度低的问题,为此我们作了一些分析和试验,其体会如下: 一、怎样防止喷涂层的冷脱落喷涂层分为与工件表面接触的过渡层和工作层。过渡层是镍色铝或铝色镍粉末通过铝热反应,促使镍由工件表面向其深 Spraying process is also called cold spray welding. Due to the heat input to the workpiece is low, so it will not cause deformation of the workpiece and additional stress, especially for wear parts or over-precision machining parts repair. However, there is a problem of cold shedding and low surface hardness of the coating. For this reason, we have made some analyzes and tests. The following are some understandings: First, how to prevent the cold shedding of the coating from being divided into contact with the surface of the workpiece Transition and working layers. Transition layer is nickel aluminum or aluminum nickel powder through the aluminum heat reaction, prompting the nickel from the workpiece surface to its depth