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Metal material surface modification method, metal material and mechanical component

A metal material and surface modification technology, applied in the field of metal materials, mechanical parts, and surface modification of metal materials, can solve the problems of uneven layer penetration and long time, reduce surface roughness, improve service life, The effect of improving mechanical properties

Active Publication Date: 2020-06-05
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the traditional ion sulfur nitrogen carburizing technology also has some defects that need to be impro

Method used

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  • Metal material surface modification method, metal material and mechanical component
  • Metal material surface modification method, metal material and mechanical component

Examples

Experimental program
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Effect test

Embodiment 1

[0023] This embodiment provides a method for surface modification of metal materials, which includes the following steps:

[0024] (1) Cut the metal material into a circular plate with a diameter of 200mm by a wire cutting machine, and place it on a grinder to polish its surface until it is smooth; the metal material is 42MnCr52 steel, and the components and their mass contents are as follows : C 0.3%, Si 0.2%, Mn 0.9%, Cr 0.4%, Fe 98.2%.

[0025] (2) Fix the polished metal material on the machine tool, adjust the parallelism of the metal material in the machine tool, and make it rotate at a speed of 200r / min, then turn on the ultrasonic rolling equipment in advance and adjust the amplitude to 20μm , Then apply a pressure of 300N to the rolling head to withstand the center of the metal material, and make the rolling head reciprocate 6 times along the radial direction of the metal material at a feed speed of 0.05r / min to ultrasonic the metal material Surface rolling treatment. Amo...

Embodiment 2

[0028] This embodiment provides a method for surface modification of metal materials, which includes the following steps:

[0029] (1) Cut the metal material into a circular plate with a diameter of 200mm by a wire cutting machine, and place it on a grinder to polish its surface until it is smooth; the metal material is 42MnCr52 steel, and the components and their mass contents are as follows :C 0.5%, Si0.4%, Mn 1.1%, Cr 0.6%, Fe 97.4%.

[0030] (2) Fix the polished metal material on the machine tool, adjust the parallelism of the metal material in the machine tool, and make it rotate at a speed of 300r / min. Then, turn on the ultrasonic rolling equipment in advance and adjust the amplitude to 20 ~30μm, then apply a pressure of 400N to the rolling head to withstand the center of the metal material, and make the rolling head reciprocate 6 times along the radial direction of the metal material at a feed speed of 0.15r / min. Carry out ultrasonic surface rolling treatment. Among them, ...

Embodiment 3

[0033] This embodiment provides a method for surface modification of metal materials, which includes the following steps:

[0034] (1) Cut the metal material into a circular plate with a diameter of 200mm by a wire cutting machine, and place it on a grinder to polish its surface until it is smooth; the metal material is 42MnCr52 steel, and the components and their mass contents are as follows :C 0.43%, Si0.29%, Mn 0.98%, Cr 0.53%, Fe 97.78%.

[0035] (2) Fix the polished metal material on the machine tool, adjust the parallelism of the metal material in the machine tool, and make it rotate at a speed of 250r / min, then turn on the ultrasonic rolling equipment in advance and adjust the amplitude to 25μm , And then apply 350N pressure to the rolling head to make it against the center of the metal material, and make the rolling head reciprocate 6 times along the radial direction of the metal material at a feed speed of 0.1r / min to ultrasonic the metal material Surface rolling treatmen...

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Abstract

The invention belongs to the technical field of metal material machining, and provides a metal material surface modification method, a metal material and a mechanical component. The surface modification method comprises the following steps that after the surface of the metal material is ground, ultrasonic surface rolling treatment is conducted; the metal material obtained after ultrasonic surfacerolling treatment is arranged under the conditions that the vacuum degree is 300-500 Pa and the temperature is 500-600 DEG C, and permeation element gas inflation is conducted for ion sulfur nitrogencarbon co-permeation treatment, wherein the permeation element gas includes ethyl alcohol gas, carbon disulfide gas and ammonia gas. According to the metal material surface modification method, the metal material and the mechanical component, through the composite modification method of ultrasonic surface rolling and ion sulfur nitrogen carbon co-permeation, atom diffusion can be accelerated, permeation layer uniformity and thickness are improved, and accordingly the defects that according to the ion sulfur nitrogen carbon co-permeation technology, the permeation layer quality is poor, and theexpansion permeation effect is low can be effectively overcome.

Description

Technical field [0001] The invention belongs to the technical field of metal material processing, and in particular relates to a method for surface modification of metal materials, metal materials and mechanical parts. Background technique [0002] The ionic thionitrocarburizing method is a typical surface modification chemical heat treatment method, which can significantly improve the friction and wear properties of materials, and has been widely used in industrial production. Ionic sulfur-nitrocarburizing is essentially the combination of sulfurizing and nitrocarburizing. Compared with sulfur-nitrocarburizing, its advantage is that it can make low carbon steel parts have better strengthening effects. Ionic thionitrocarburizing is a heat treatment process in which gas is ionized through glow discharge under vacuum conditions, and the ions bombard the surface of the workpiece under the action of an electric field, thereby infiltrating the surface of the workpiece. In the surface...

Claims

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Application Information

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IPC IPC(8): C23C8/02C23C8/36C23C8/28C22C38/18C22C38/04C22C38/02
CPCC22C38/02C22C38/04C22C38/18C23C8/02C23C8/28C23C8/36
Inventor 胡春华赵燕强赵小辉桑娜
Owner JILIN UNIV