Laser treatment method for working part of extrusion die

A technology of working part and extrusion die, applied in the field of modification of working part of extrusion die, can solve the problems of long nitriding treatment time, waste water and exhaust gas discharge, high treatment cost, improve the surface and performance quality, and prolong the service life , the effect of prolonging the service life

Pending Publication Date: 2019-10-22
重庆杰腆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another treatment method is nitriding treatment, which refers to the chemical treatment method that makes nitrogen atoms penetrate into the surface layer of the workpiece in a certain medium at a certain temperature, which can increase the hardness to 55-58HRC, but the hardness layer is shal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Embodiment 1: The width of the working part is 3mm, and the adjustment parameters of the laser are 30° laser entry angle, 800w laser power, 275mm laser focal length, laser spot Φ3mm, and laser bombardment speed 5 mm / s.

Example Embodiment

[0026] Embodiment 2: The width of the working part is 5mm, and the adjustment parameters of the laser are 50° laser entrance angle, 550w laser power, 255mm laser focal length, laser spot Φ5mm, and laser bombardment speed 6 mm / s.

Example Embodiment

[0027] Embodiment 3: The width of the working part is 8mm, the adjustment parameters of the laser are 85°, laser power 650w, laser focal length 350mm, laser spot Φ8mm, and laser bombardment speed 5.5mm / s.

[0028] The present invention takes the above three sets of experimental data to perform laser treatment on the working part of the extrusion die, and the hardness after treatment is all 62HRC, 64HRC, and 66HRC.

[0029] In the present invention, laser technology is used to process the working part of the extrusion die, and the shallow crystal lattice arrangement of the working part of the extrusion die is changed by high-power laser bombardment, so that the hardness of the working part of the extrusion die can reach 62HRC or more, and the hardness layer depth can reach 0.5~1.2mm, compared with the conventional heat treatment and nitriding treatment, the hardness of the extrusion die is larger, the depth of the hardness layer is greatly improved, the service life of the die is inc...

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PUM

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Abstract

The invention discloses a laser treatment method for a working part of an extrusion die. The method includes the following steps that S1, a quasi finished product of the extrusion die is subjected toheat treatment to enable the basic hardness to be 48-50 HRC; S2, a profiled hole and the surface of the working part of the extrusion die are analyzed and checked; S3, the working part of the extrusion die is subjected to laser treatment through a laser unit, laser parameters are adjusted according to the size of the working part, and the working part of the extrusion die is subjected to laser bombardment, wherein the adjusted parameters include the laser inlet angle, the laser power, the laser focal length, laser spots and the laser bombardment speed; and S4, the working part, obtained afterlaser treatment, of the extrusion die is finely machined and ground and polished. The machining period of the die can be effectively shortened, the hardness of the working part of the die is improved,and the service life is prolonged; the surface quality and the performance quality of the extrusion product are improved; and sewage, waste oil and waste gas are not discharged in the treatment process by means of the method, and therefore energy saving and environmental friendliness are achieved.

Description

technical field [0001] The invention relates to the technical field of modifying the working part of an extrusion die, in particular to a laser treatment method for the working part of an extrusion die. Background technique [0002] Entering the era of new technology revolution, my country needs more and more high-quality extrusion profiles in aerospace, aviation, electronic information, high-speed railway, automobile and other industrial fields. However, to obtain high-quality extrusion profiles, the requirements for extrusion dies are also increasing. come higher. Due to the extrusion force, thermal fatigue, material friction and other forces during the extrusion die, the performance of the working part of the die is reduced or damaged, which affects the life of the die and the quality of the extruded product. [0003] In the prior art, there are two ways to harden the working part of the extrusion die, one is heat treatment, and its hardness is roughly 48-50HRC. Another ...

Claims

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Application Information

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IPC IPC(8): C21D10/00
CPCC21D10/005
Inventor 尹卫
Owner 重庆杰腆科技有限公司
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