Variable frequency pump bearing parts work surface

Bearing parts work surface state variable frequency pump, there is a large difference in structure and performance requirements, so the surface strengthening technology can be classified from different Angle to form a variety of methods, classification according to the chemical and physical process of surface strengthening technology, can be roughly divided into five categories: surface deformation strengthening heat treatment, surface strengthening, chemical heat treatment, surface metallurgy strengthening, film surface strengthening. 1. Surface deformation strengthening by the method of variable frequency pump bearing mechanical plastic deformation in the metal surface, so as to form a hardening layer with high hardness and high strength, this kind of surface strengthening method called surface deformation strengthening, also known as work hardening. 2. Including shot peening, sandblasting, cold extrusion, rolling, cold grinding and impact and explosion shock processing, etc. The characteristics of these methods are: strengthening layer increased dislocation density, the crystal structure refinement, so that the hardness and strength increased, the surface roughness value decreases, and can significantly increase the surface fatigue strength of parts and reduce fatigue notch sensitivity. 3. This process is simple, effective reinforcement method, there is no obvious boundaries between hardening layer and matrix, the coherent structure and not easy to fall off in use. Its most method has been applied in the variable frequency pump bearing industry: roller surface strengthening is the application of this kind of method, precision rolling has become a new ring processing and strengthening method. Material and heat treatment could not have often make the whole, it is hard to give full play to their potential. Applied materials surface strengthening technology can not only solve the surface and center differences in structure and requirements, but also can make further surface to obtain specific performance, in order to meet the work under certain conditions of variable frequency pump bearing on the working surface performance requirements. This makes sense in the modern science and technology development. On the traditional method of surface strengthening technology belongs to the category of the heat treatment. And developed the modern laser and electron beam and ion beam surface strengthening method, not only will some high and new technology applied in the material surface strengthening, and in the process is beyond the traditional heat treatment category, form the new technology.