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Ultrasonic impact device

A technology of impact device and ultrasonic impact gun, which is applied in the coating process and coating of metal materials, can solve problems such as ineffective effects, achieve the effects of reducing surface roughness, eliminating residual stress, and improving high-cycle fatigue performance

Active Publication Date: 2018-10-30
BEIJING GOLDEN WHEEL SPECIAL MACHINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional high-temperature tempering, shot peening and other methods for removing residual stress, as well as the current advanced method for removing residual stress by laser shock, have no obvious effect on improving the high-cycle fatigue performance of the alloy due to surface modification.

Method used

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The purpose of the present invention is to provide an ultrasonic impact device, which can effectively improve the high-cycle fatigue performance of titanium alloy parts due to the reduction of electric spark modification by using ultrasonic impact method to remove the residual stress of electric spark modification and apply compressive stress.

[0025] In order to make the above objects, features and advantages of the present invention more comprehensibl...

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Abstract

The invention discloses an ultrasonic impact device. The device comprises an ultrasonic impact gun, a spring pre-pressing sliding table and a titanium alloy test piece, wherein the titanium alloy testpiece is a titanium alloy part which is subjected to electric spark modification treatment, and provided with an amorphous alloy coating layer; the ultrasonic impact gun is fixed on the spring pre-pressing sliding table, the spring pre-pressing sliding table comprises a compression spring, and the pre-pressure of the ultrasonic impact gun can be accurately controlled by controlling the compression amount of the compression spring through the spring pre-pressing sliding table; and residual stress of the electric spark modified layer can be removed by conducting an ultrasonic impact treatment on the amorphous alloy coating of the titanium alloy test piece according to the pre-pressure by the ultrasonic impact gun, and compressive stress is applied, so that the high-cycle fatigue performanceof the titanium alloy test piece due to the electric spark modification is improved.

Description

technical field [0001] The invention relates to the technical field of surface modification of metal materials, in particular to an ultrasonic impact device. Background technique [0002] EDM surface modification technology can deposit a layer of amorphous alloy coating on the surface of titanium alloy, which can significantly improve the flame retardancy and wear resistance of titanium alloy. However, EDM modification will produce a large residual tensile stress, which will significantly reduce the high-cycle fatigue performance of titanium alloys, and affect the application of EDM-modified titanium alloys in aerospace and other fields that have high requirements for high-cycle fatigue. Applications. Therefore, improving the high-cycle fatigue performance of titanium alloys due to surface modification has become a top priority. The traditional high-temperature tempering, shot peening and other methods for removing residual stress, as well as the current advanced method fo...

Claims

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Application Information

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IPC IPC(8): C21D10/00C23C26/02
CPCC21D10/00C23C26/02
Inventor 汪瑞军马小斌鲍曼雨
Owner BEIJING GOLDEN WHEEL SPECIAL MACHINE
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