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A method for accelerating element diffusion on the surface of low carbon steel

A diffusion method, low carbon steel technology, applied in solid diffusion coating, coating, metal material coating process, etc., can solve the problem of affecting gear performance and service life, salt bath boronizing technology is prone to danger, accompanied by carbon black And oxidation and other problems, to achieve the effect of small deformation of materials, simple process, and little environmental pollution

Active Publication Date: 2021-12-24
HARBIN ENG UNIV
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  • Application Information

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Problems solved by technology

[0003] The traditional carburizing and boronizing technology cannot meet the overall uniformity requirements, and the surface of the gear after carburizing is often accompanied by carbon black and oxidation, which seriously affects the performance and service life of the gear. Boron technology is also prone to hazards during heat treatment

Method used

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  • A method for accelerating element diffusion on the surface of low carbon steel
  • A method for accelerating element diffusion on the surface of low carbon steel
  • A method for accelerating element diffusion on the surface of low carbon steel

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specific Embodiment approach 1

[0029] Specific implementation scheme 1: The specific implementation steps of accelerating element diffusion on the surface of low carbon steel in this implementation mode are as follows:

[0030] Low carbon steel was selected as the experimental material. Remove oil stains and oxides on the surface of the material, prepare hard ceramic powder with a particle size of 20-300 μm, clean and calcine the hard ceramic particles, prepare hard ceramic powder with a particle size of 20-300 μm, and mix with Diffusion elements of 2-300μm are placed in a grinder and mechanically mixed for 20-120min. Finely grind the powder and mix well.

[0031] The surface of the obtained sample was bombarded with supersonic particles, cleaned ultrasonically and then dried for later use. Place the sample in an environment of 300°C-800°C for 2-7h heat treatment. Finally, a low-carbon steel material with better diffusion effect is obtained.

[0032] The material of the bombardment projectile with surfa...

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment differs from methods 1 to 2 in that the particle size of the hard ceramic powder and elemental element powder used is 20-300 μm.

specific Embodiment approach 4

[0038] Embodiment 4: This embodiment differs from methods 1 to 3 in that the mass ratio of hard ceramic powder to elemental element powder is 15:1-1:1.

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Abstract

The invention discloses a method for accelerating element diffusion on the surface of low-carbon steel. Step 1: remove oil stains and oxides on the surface of low-carbon steel materials, mix hard ceramic powder with elemental powder, and put it into a grinder for mechanical mixing for 20-120 minutes to make the powder Refining and fully mixing; Step 2: Treat the surface of the sample obtained in Step 1 by bombarding it with supersonic particles, dry it after ultrasonic cleaning, heat treat the sample, and finally obtain a low-carbon steel material with better diffusion effect . The process of the invention is simple and easy, and at the same time, the cost is low, and the deformation of the material is small, the surface is more uniform, the process is simple, and the powder can be reused to facilitate industrial production. It has less environmental pollution and less energy consumption, and can be widely used in the boronizing and carburizing process of industrial gears.

Description

technical field [0001] The invention relates to the fields of heat treatment and surface engineering, in particular to a method for accelerating element diffusion on the surface of low-carbon steel. Background technique [0002] With the development of steel material industry technology, all walks of life have higher and higher requirements for steel materials, so the performance requirements for steel are also higher. In recent years, supersonic particle bombardment technology has been used as a new surface The strengthening method is one of the surface nanotechnology. The principle is that the bombardment of the surface by the projectile material can form a gradient nanostructure on the surface. "structure, which is convenient for the better combination of the surface modification layer and the matrix, and there is no obvious boundary. In addition, the supersonic particle bombardment technology causes less pollution, and the powder can be reused. This process does not chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D7/06C23C8/60C23C8/80C23C10/28C23C10/60C23C12/02
CPCC21D7/06C23C8/60C23C8/80C23C10/28C23C10/60C23C12/02
Inventor 崔秀芳王佐金国刘金娜
Owner HARBIN ENG UNIV
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