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Laser temperature shot peening surface strengthening method and device with controllable heat-affected zone

A heat-affected zone and surface-strengthening technology, used in heat treatment process control, heat treatment equipment, manufacturing tools, etc., can solve problems such as poor controllability of heat impact, and achieve the effects of improving mechanical properties, high degree of automation, and ensuring reliability.

Active Publication Date: 2016-05-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of poor controllability of the existing heat-affected workpiece, to invent a laser temperature shot-peening surface strengthening method with controllable heat-affected zone, and to provide a corresponding device at the same time

Method used

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  • Laser temperature shot peening surface strengthening method and device with controllable heat-affected zone
  • Laser temperature shot peening surface strengthening method and device with controllable heat-affected zone

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1-2 shown.

[0038] A heat-affected zone controllable laser temperature shot peening surface strengthening method, which comprises the following steps:

[0039] (1) Use the laser transceiver device as the trigger device for the moving position of the high-frequency induction heating coil; take advantage of the advantages of the laser transceiver device, such as sensitive response, fast high-frequency induction heating speed, and precise computer system control, to achieve precise control of the metal during the laser temperature shot peening process. The surface temperature of the material and the depth of the heat-affected zone can greatly improve the mechanical properties of the workpiece surface without affecting the material properties of the core of the metal workpiece. At the same time, the closed-loop control of temperature and laser pulse is realized, which is convenient for automatic production.

[0040] (2) Using the computer system and the sc...

Embodiment 2

[0048] Such as figure 1 , 2 shown.

[0049] A heat-affected zone controllable laser temperature shot peening surface strengthening device, which includes:

[0050] A workbench 1, the workbench 1 is used to fix the workpiece 2 through the workpiece fixture 4 (magnetic fixture can be used), and the surface of the workpiece 2 is pasted with a black paint layer 11 before laser temperature shot peening;

[0051] A moving platform 5, the moving platform 5 is used to install and drive the workbench 1 to move according to the set trajectory under the control of the computer system;

[0052] A high-voltage coil 9, the high-voltage coil 9 can move to the workpiece 2 under the drive of the coil transmission system and set the heated part of the workpiece 2 in it to realize the controllable heating depth. The high-voltage coil 9 is powered by a high-frequency AC power supply 8, and the AC power supply 8 is controlled by computer system 16; Described coil transmission system comprises g...

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Abstract

The invention discloses a controllable warm laser shot blasting surface strengthening method and device in a heat affected zone. The device is characterized by comprising a laser, a high frequency alternating current power supply, a high-tension coil, an infrared temperature measurement probe, a guide rail, a motor, a computer system and the like. The device utilizes the advantages that a laser transmitting and receiving device is flexible in response, induction heating speed is extremely high, and the computer system is accurate in control, accurately controls the surface temperature of metal material and the depth of the heat affected zone during laser shot blasting, can greatly improve the mechanical property of the surface of a work piece while the property of the core material of the metal work piece is not affected, meanwhile realizes closed-loop control through temperature and laser pulse, is convenient to realize automated production, and has the advantages of being simple in structure, high in production efficiency, low in cost and the like.

Description

technical field [0001] The invention relates to a laser processing technology, in particular to a laser shock processing technology, in particular to a laser temperature shot peening surface strengthening method and device with a controllable heat-affected zone. Background technique [0002] Laser warm shot peening, also known as temperature-assisted laser peening, is a new type of surface strengthening treatment technology. By performing laser shock under a certain temperature effect, higher dislocation density and dislocation entanglement can be achieved. , accompanied by the emergence of dynamic strain aging and dynamic precipitation. These characteristics determine that laser warm shot peening can achieve a better surface strengthening effect than mechanical shot peening. At the same time, laser warm shot peening can produce more stable residual compressive stress than laser peening and mechanical shot peening through dynamic strain aging and dynamic precipitation, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/09C21D11/00
Inventor 周建忠孟宪凯黄舒盛杰王宏宇朱炜立韩煜航苏纯梅於芬
Owner JIANGSU UNIV