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A method for strengthening the surface of metal materials by using a laser machine

A metal material and surface strengthening technology, applied in metal material coating technology, laser welding equipment, metal processing equipment, etc., can solve the problems of high brittleness, inconvenient production and use, and insufficient strength of tungsten-cobalt cemented carbide. Effects of Corrosive Advantage

Active Publication Date: 2019-10-08
山东裕德激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The application number CN201320854145.9 discloses a cemented carbide mold, which increases the strength of the core by using a core made of alloy, so that the core will not be damaged due to insufficient strength during use, but the core The overall use of tungsten-cobalt cemented carbide, not only the cost of the core is higher than that of ordinary steel, but also the tungsten-cobalt cemented carbide is brittle and cannot be forged and heat-treated. question
[0004] To sum up, it can be seen that the cores currently on the market are made of traditional steel such as S136. The cores made of ordinary steel are not strong enough and the service life is too low. In the manufacture of some high-precision products, it is not accurate because of their insufficient strength Positioning, or using alloys to make cores, the hardness and cost of the alloys are too high, which brings great inconvenience to production and use, and the practicability is not good. Therefore, it is urgent to improve the production and manufacturing of mold cores in the above aspects. make improvements

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  • A method for strengthening the surface of metal materials by using a laser machine
  • A method for strengthening the surface of metal materials by using a laser machine
  • A method for strengthening the surface of metal materials by using a laser machine

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Embodiment 1

[0022] Such as figure 1 as shown, figure 1 It is a flow chart of Embodiment 1 of using a laser machine to strengthen the surface of a metal material in the present invention, a method for using a laser machine to strengthen the surface of a metal material, and the specific production method is as follows:

[0023] Step 1: Preliminarily heat-treat the cast metal material to obtain a metal raw material with a certain strength, machine the metal raw material, polish it, and then wipe it to remove oil stains on the surface;

[0024] Step 2, put the metal raw materials to be processed on the laser machine for automatic screening, screen out the metal raw materials whose size and preliminary strength meet the requirements, and place them on the fixture for the next step of processing;

[0025] Step 3, start the laser machine to etch the surface of the metal material to remove the surface oxide layer, remove the surface oxide layer, and cool naturally after the treatment;

[0026] ...

Embodiment 2

[0032] Figure 2-3 It is a schematic diagram of the core structure of Embodiment 2 of the present invention, the core of the mold can be processed by the laser machine in the above embodiment 1 to strengthen the surface of the metal material, such as figure 2 As shown, the core after machining and molding also includes stress grooves 5. Since the boss 2 is matched with the molded parts, the deformation of thermal expansion and contraction generated after the molded parts are formed and cooled will be concentrated on the bosses. 2 and the junction of the cylinder 1 may cause damage such as bending of the cylinder 1 or cracks caused by stress fracture at the junction of the cylinder 1 in severe cases. It can prevent damage caused by stress concentration on the surface of the joint. A plurality of stress grooves 5 are uniformly arranged along the circumference of the boss 2 . In order to prevent the core body from being damaged by stress during mechanical cutting when opening ...

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Abstract

The invention provides a method for carrying out enhanced treatment on a metal material surface through a laser machine. An IPG pulse optical fiber laser device is used for carrying out surface enhanced treatment on the metal material, the treated metal material has the high strength and is not prone to damage, in the use process, corrosion resisting is achieved, producing and manufacturing are convenient, the manufacturing cost is low, and mass production is easy; the method for carrying out enhanced treatment on the metal material surface can be specifically applied to castings like a mold core, due to the fact that the mold core made of a hard alloy is difficult to machine, a mold core of common steel is cut, punched and formed, the laser machine is used for enhancing the metal materialsurface, machining is convenient, the mold core strength is high, and through coating of multiple layers of metal coatings, strength, wear resisting, and corrosion resisting have more advantages compared with those of mold cores made of a single alloy.

Description

technical field [0001] The invention belongs to the field of metal material surface treatment, and in particular relates to a method for strengthening the metal material surface by using a laser machine. Background technique [0002] The laser technology, known as one of the most important scientific and technological inventions in the 20th century, has attracted the attention of material scientists as soon as it came out. The laser metal material surface strengthening technology was first applied to the inner surface of the automobile steering gear shell by General Motors of the United States in 1974. Laser quenching process, the wear resistance of hardened parts is 10 times higher than that before untreated. Since then, laser metal surface strengthening treatment technology has attracted the attention of professionals in various processing fields, and IPG pulsed fiber laser is the representative of the third generation of laser technology. , It has mature technology and ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B23K26/362B23K26/70
Inventor 康德华李冬云
Owner 山东裕德激光科技有限公司
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