Diesel Injector Fuel Injector 0445120304 Bosch for Dongfeng Cummins Isle / Isl9 EU 3 Engine

For a damaged part, there are usually the following repair processes to choose from. Combined with the actual situation, the best repair and inspection process is selected on the basis of fully satisfying the rationality, economy and feasibility of the process.

1. Process rationality

Different maintenance and inspection processes have their corresponding materials. When choosing a repair process, it is necessary to consider the specific repair materials and the actual process to adapt to each other. For example: the application range of parts materials of the spraying process is relatively wide, and metal parts such as carbon steel and cast iron can be sprayed scientifically and reasonably. As far as the metal material is concerned, there are only a few non-ferrous metals, such as: red copper is very difficult to spray, the main reason is that the thermal conductivity of red copper is relatively large, during the spraying process, when the powder flux contacts the red copper surface, its temperature will decrease. Immediately lower, and cannot form a smooth bond, resulting in spray failure. Relevant practice shows that the wear degree of diesel injector parts is different. When choosing a repair process, it is necessary to fully grasp the thickness of the covering layer that can be achieved by process repair. To ensure the rationality of the process, we can start from the following aspects. First, use copper gaskets or mild steel gaskets between the diesel engine injector and the nozzle plane; A layer of soft metal is plated between them; second, a high-tech grinding process is adopted.