Reinforced stress shot blasting method and device

A shot blasting device and stress technology, used in abrasives, metal processing equipment, abrasive jet machine tools, etc., can solve the problems of insufficient stress relief, low product quality, poor surface quality, etc., and achieve the effect of sufficient stress relief.

Inactive Publication Date: 2011-09-21
CHONGQING HONGQI SPRING
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  • Description
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AI Technical Summary

Problems solved by technology

[0002] The leaf spring is an indispensable and important part in the structure of the truck. In the existing leaf spring processing technology, when the leaf spring is shot blasted, the leaf spring is directly placed on the conveyor belt, and the position of the leaf spring is not adjusted. limited, and no force is applied to the leaf spring, so that the leaf spring is subjected to shot blasting in a natural state. The surface quality of the leaf spring processed by this shot blasting method is relatively poor, and the stress relief is not sufficient, resulting in low product quality.

Method used

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  • Reinforced stress shot blasting method and device
  • Reinforced stress shot blasting method and device
  • Reinforced stress shot blasting method and device

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Embodiment Construction

[0013] Shot blasting is to throw steel shots onto the surface of the leaf spring 1 at a high speed and a certain angle by mechanical means, so that the surface layer undergoes plastic deformation and forms a strain layer, and changes in the structure and residual stress occur in the strain layer , reasonable control of these changes within the strain layer can improve the fatigue fracture and stress corrosion cracking of the leaf spring.

[0014] The existing free shot peening method is: under the condition of neither restricting the position of the leaf spring 1 nor applying prestress, steel balls are projected onto the leaf spring 1, and the stress of the leaf spring 1 processed by this method is eliminated. Inadequate, low quality product.

[0015] In view of the aforementioned problems, the present invention proposes a stress-strengthening shot blasting method, which uses a clamp 2 to clamp the leaf spring 1, so that the leaf spring 1 undergoes directional bending, and the...

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Abstract

The invention discloses a reinforced stress shot blasting method. The method is characterized by comprising the following steps of: clamping a steel plate spring by using a fixture to ensure that the steel plate spring is directionally bent and a directional bending direction is opposite to a natural bending direction of the steel plate spring; and performing shot blasting treatment on the back surface of the directionally bent steel plate spring by using a shot blasting machine. The invention has the advantages that: certain prestress is applied onto the steel plate spring before the shot blasting treatment; the prestress and the impact force of a steel shot are coacted with each other to change the stress distribution of the steel plate spring; simultaneously, the position of the steel plate spring is relatively fixed and a stress elimination effect is more sufficient due to the clamping effect of the fixture.

Description

technical field [0001] The invention relates to a method for manufacturing a leaf spring, in particular to a method and device for strengthening stress shot blasting. Background technique [0002] The leaf spring is an indispensable and important part in the structure of the truck. In the existing leaf spring processing technology, when the leaf spring is shot blasted, the leaf spring is directly placed on the conveyor belt, and the position of the leaf spring is not adjusted. It is limited, and no force is applied to the leaf spring, so that the leaf spring is subjected to shot blasting in a natural state. The surface quality of the leaf spring processed by this shot blasting method is relatively poor, and the stress relief is not sufficient, resulting in low product quality. Contents of the invention [0003] Aiming at the problems in the background technology, the present invention proposes a stress-strengthening shot blasting method, the improvement of which is: the le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/10B24C3/02
Inventor 覃义云
Owner CHONGQING HONGQI SPRING
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