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High manganese steel shot blasting machine blade shot peening strengthening technological parameter determination method

A technology of shot blasting machine blades and process parameters, which is applied in the direction of electrical digital data processing, computer aided design, design optimization/simulation, etc., can solve problems such as numerous influencing factors and complicated shot peening process, and achieve accurate calculation and engineering Good practical application effect and low cost effect

Inactive Publication Date: 2017-10-03
UNIV OF JINAN
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Problems solved by technology

However, due to the complexity of the shot peening process and the many influencing factors, there is still a lack of relevant methods to optimally design the parameters of the shot peening process.

Method used

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  • High manganese steel shot blasting machine blade shot peening strengthening technological parameter determination method
  • High manganese steel shot blasting machine blade shot peening strengthening technological parameter determination method
  • High manganese steel shot blasting machine blade shot peening strengthening technological parameter determination method

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0020] Based on ABAQUS finite element analysis, the determination method of shot blasting machine blade shot peening treatment process parameters is carried out as follows:

[0021] Finite Element Simulation of Shot Peening Residual Stress

[0022] In the ABAQUS dynamic display analysis, the impact load generated during the collision between the projectile and the surface of the high manganese steel blade is simulated by defining the initial velocity of the projectile, and the Coulomb friction model is used to describe the contact between the projectile and the high manganese steel blade. The tangential motion between the two contact surfaces is reduced to make the calculated results more stable; the element type of the high manganese steel blade is C3D8R, and the local fine mesh is used to divide the element in the projectile impact area...

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Abstract

The invention discloses a high manganese steel shot blasting machine blade shot peening strengthening technological parameter determination method based on ABAQUS finite element analysis. The method comprises establishing finite element models of shots and a high manganese steel shot blasting machine blade based on the material attribute of the shots and the high manganese steel shot blasting machine blade; setting different shot peening strengthening technological parameters by means of orthogonal tests to carry out finite element analysis; obtaining the residual pressure on the surface of the blade after shot peening strengthening, obtaining an optimal regression equation by means of a regression analysis method, and determining the shot blasting machine blade shot peening strengthening technological parameter by means of the optimal regression equation. According to the invention, the value of the residual stress on the surface layer of the high manganese steel shot blasting machine blade which is subjected to shot peening strengthening in different shot peening technological parameters is predicted by means of finite element analysis and the regression equation, and therefore the optimal shot peening technological parameter of the high manganese steel shot blasting machine blade is determined in order to prolong the service life of the shot blasting machine blade, and an appropriate shot peening strengthening technological parameter can be customized in dependence on the demand of the maximum residual stress on the high manganese steel workpiece surface layer.

Description

technical field [0001] The invention relates to the technical field of shot peening processing, in particular to a method for determining process parameters of shot peening strengthening of high manganese steel shot blasting machine blades. Background technique [0002] At present, the application of shot blasting machines at home and abroad is becoming more and more extensive. It is no longer limited to the traditional surface treatment of parts, and is more widely used in the maintenance and repair of highways, steel bridges and airport roads. As the key component of the shot blasting machine, the quality and service life of the shot blasting machine directly depend on the blades, and the blades are the most vulnerable parts of the shot blasting machine because they are worn by abrasives on their surface. According to incomplete statistics, the value of materials consumed due to blade wear in China is tens of millions every year. The shot peening process causes plastic de...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2119/06
Inventor 陈洪堂郭培全乔阳王守仁樊宁王相宇
Owner UNIV OF JINAN
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