在红套过盈联接的装配中,如果能在包容件和被包容件之间涂刷一层中间层,将大大增加联接强度,提高联接质量。在这方面,过去曾经使用过电镀层等多种方法来建立中间层。但都不理想。最近利用塑性及软性金属的粉末与甘油或其他粘结剂调合,作为中间层取得了较理想的效果。不仅可以使联接部分的承载能力加大,而且工艺还简单易行。上述装配方法,其联接强度之所以提高是因为经过加热的包容件在过盈联接时,对中间层施加了压力与温度的作用所致。薄薄的一层中间层充满于接触面上所有的低洼部分,从而使实际的接触面积大大增加了,过盈联接的粘结强度得到了进一步提高。在这里,中间层的物理机械性能及其厚度决定了联接强度提高 In the fitting of the interference fit of the red sleeve, if an intermediate layer can be painted between the containing part and the contained part, the connection strength will be greatly increased and the connection quality will be improved. In this regard, a variety of methods have been used in the past, such as plating, to create an intermediate layer. But not ideal. Recently, the use of plastic and soft metal powder with glycerin or other binder blend, as the middle layer achieved better results. Not only can increase the carrying capacity of the coupling part, but the process is also simple and easy. In the above assembly method, the reason why the joining strength is increased is that the heated package member exerts a pressure and a temperature effect on the intermediate layer during the interference connection. A thin layer of middle layer fills all the low-lying parts of the contact surface, so that the actual contact area is greatly increased, and the bond strength of the interference connection is further enhanced. Here, the physical and mechanical properties of the middle layer and its thickness determine the increase in joint strength