Selecting optimum modes of bearing pads restoration
Keywords:
bearing pads, vacuum-plasma, spraying, mathematical planning, multifactor experiment, optimizationAbstract
Problem formulation. The questions of bearing pads restoration by vacuum- plasma spraying are considered. Parts and components coated with vacuum-plasma can be repeatedly restored by recoating while they wear out, which significantly reduces the cost of equipment repair, considerably reduces the consumption of materials for manufacture of new parts. Need search for optimal parameters vakuuum- plasma spraying. Content analysis. The most effective way to improve the wear resistance of the product is to create a multilayer coating. The process of vacuum-plasma coating of pads was not previously used; it is not described in the literature sources. Goals and tasks set. So it is necessary with the help of mathematical planning to select those process parameters under which there is formed a surface layer with desired properties. Statement of the material. In the given work there were selected the parameters of vacuum-plasma spraying process on the basis of mathematical modeling. The following tasks are solved: selection of optimization parameters; calculation and obtaining of quality dependence of the coating on the parameters of the technological process of spraying; selection of areas of the optimum technological spraying process parameters to produce high-quality coatings. Conclusions. Maximum resistance of bearings pads can be obtained with hardness of materials 45 HRC, the surface roughness of the pad to be coated, Ra = 0.16 and the coating thickness of 45 microns.References
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