Gear broken tooth laser cladding welding process optimization method based on ansys

Abstract

The invention provides a gear broken tooth laser cladding welding process optimization method based on ansys. The gear broken tooth laser cladding welding process optimization method comprises the steps of S1, determining thermal analysis and stress analysis parameters of a gear material and weld metal powder; S2, determining size parameters of the gear, creating a two-dimensional planar graph ofthe gear, and storing and importing the two-dimensional planar graph into ansys; S3, defining a thermal analysis unit and a structure analysis unit, and then performing mesh generation; S4, taking a heat source model, selecting a heat source calculation formula, and then defining welding process parameters including welding current, voltage, speed and time; S5, on the basis of the step S4, applying a dead unit to a heat source load, wherein the dead unit is used for solving the nonlinear problem of the unit; S6, simulating a temperature field, a stress field and deformation conditions under different welding process parameters by utilizing ansys, and finding out the welding process parameter with the minimum residual stress and deformation. According to the method, the temperature field, the stress field and deformation after gear repairing are directly obtained through a process optimization method. The manpower and material resources are saved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of gear maintenance, in particular to an ansys-based laser cladding welding process optimization method for gear broken teeth. Background technique [0002] In actual industrial production, gear failure will directly affect the normal production of the enterprise, and the time cost and price cost of direct replacement of gears will be too high. Therefore, it is a better choice to choose laser cladding to repair the size of broken gears. In the laser cladding process, due to the extremely high temperature gradient, the appearance of residual stress is inevitable. When the residual stress exceeds the strength limit of the material, cracks will occur. Therefore, it is necessary to reduce the cladding by optimizing the process parameters. Layer cracking tendency, improving the quality of repaired gears. Carrying out the actual process test to adjust the optimum process parameters of the repaired gear quality is...

AI Technical Summary

Problems solved by technology

According to the applicant's experience, the final result depends to a large extent on the expertise and experience of the operator, and an efficient repair method cannot be formed, which will cause great inconvenience to production and life.

[0003] In order to solve the common problems in the field such as excessive stress in gear repair, cracks in welding, single welding method, etc., the present invention is made

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