Strengthened grinding method for wear-resisting alloy steel workpiece surface

A workpiece surface and grinding method technology, applied in metal processing equipment, abrasives, manufacturing tools, etc., can solve the problems of mechanical strengthening of the surface of a single wear-resistant alloy steel workpiece and cannot be chemically modified at the same time, so as to reduce surface tension and prevent Effect of ineffectiveness and inhibition of reproduction

Inactive Publication Date: 2014-06-25
GUANGZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, follow-up in-depth studies have shown that this method has the following shortcomings: it only mechanica...

Method used

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  • Strengthened grinding method for wear-resisting alloy steel workpiece surface
  • Strengthened grinding method for wear-resisting alloy steel workpiece surface
  • Strengthened grinding method for wear-resisting alloy steel workpiece surface

Examples

Experimental program
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Effect test

example 1

[0021] Example 1 (finishing)

[0022] The wear-resistant alloy steel workpiece is the inner ring of the bearing ring of GCr15, which is subjected to intensive grinding.

[0023] (1) Preparation of mixture

[0024] ①Intensified grinding modified fluid (abbreviated as grinding fluid) has the following four preparation schemes:

[0025]Scheme 1: fatty acid imidazoline borate 15%, sodium benzoate 2%, sodium alkylsulfonate 12%, triethanolamine 5%, fatty alcohol polyoxyethylene ether 4%, borax (chemical name is tetraboric acid) by weight percentage Sodium) 3%, disodium edetate 0.5%, sodium hydroxide 1%, polyoxypropylene 0.1% and benzotriazole 0.3% were added to 57.1% water and stirred evenly to obtain enhanced grinding modification liquid;

[0026] Scheme 2: By weight percentage, 16.5% of phosphate ester amine salt compound, 2.1% of adipic acid, 10% of sodium alkyl sulfate, 4.2% of disodium hydrogen phosphate, 7% of alkylphenol polyoxyethylene ether, aminoacetic acid- Add 2.5% h...

example 2

[0038] Example 2 (coarse grinding)

[0039] The wear-resistant alloy steel workpiece is the inner ring of the bearing ring of 1Cr18Ni9, which is subjected to intensive grinding.

[0040] (1) Preparation of mixture

[0041] ①Intensified grinding modified liquid has the following 4 preparation schemes:

[0042] Scheme 1: fatty acid imidazoline borate 16%, sodium benzoate 2%, sodium alkyl sulfonate 11%, triethanolamine 4%, fatty alcohol polyoxyethylene ether 5%, borax (chemical name is tetraboric acid) by weight percentage Sodium) 3.5%, disodium edetate 0.4%, sodium hydroxide 1%, polyoxypropylene 0.1% and benzotriazole 0.2% were added to 56.8% water and stirred evenly to obtain enhanced grinding modification liquid;

[0043] Scheme 2: By weight percentage, 16.5% of phosphate ester amine salt compound, 3% of hexadic acid, 10.5% of sodium alkyl sulfate, 4.4% of disodium hydrogen phosphate, 6% of alkylphenol polyoxyethylene ether, aminoacetic acid- 2% hydrochloric acid, 0.3% dio...

example 3

[0055] Example 3 (influence of different jet velocities on enhanced grinding effect)

[0056] 1. The wear-resistant alloy steel workpiece is used as the inner ring of the 1Cr13 bearing ring, and it is subjected to intensive grinding.

[0057] (1) Preparation of mixture

[0058] ①According to weight percentage, fatty acid imidazoline borate 18%, sodium benzoate 2.2%, sodium alkyl sulfonate 12.5%, triethanolamine 4.5%, fatty alcohol polyoxyethylene ether 2%, borax (chemical name is sodium tetraborate) 2.5%, 0.6% disodium edetate, 1% sodium hydroxide, 0.2% polyoxypropylene and 0.4% benzotriazole were added to 56.1% water and stirred evenly to obtain an enhanced grinding modification liquid;

[0059] ②According to the gradation of Φ1mm: Φ2mm: Φ3mm=2: 1: 1, the steel balls of cast steel material with a Rockwell hardness of 65HRC and a diameter of Φ1mm, Φ2mm and Φ3mm are mixed together;

[0060] ③Pass the brown corundum powder through a 150-mesh sieve and then a 280-mesh sieve to ...

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Abstract

The invention relates to a strengthened grinding method for wear-resisting alloy steel workpiece surface. The method comprises the steps of ejecting a mixture to the surface of a wear-resisting alloy steel workpiece with speed of 100-300 m/s and an ejecting angle of 15-75 degrees, and completely covering the surface of the wear-resisting alloy steel workpiece by ejecting points, wherein the mixture is composed of steel balls, grinding powder and strengthened grinding modified liquid with the mass ratio of the steel balls to the grinding powder to the strengthened grinding modified liquid of (1:1:1) to (5:1:3); the steel balls are cast steel balls or bearing steel balls with the hardness greater than 62 HRC (rockwell hardness) and the diameter of phi1-phi8; the strengthened grinding modified liquid is composed of the following raw materials by weight percentage: 15%-25% of extreme pressure additive, 2-3% of corrosion remover, 10-15% of penetrant, 4-6% of pH conditioning agent, 2-8% of non-ionic surface active agent, 2-5% of pH buffering agent, 0.3-0.8% of softener, 1% of alkali, 0.1-0.2% of defoamer, 0.2-0.5% of antirust agent and the balance of water. By utilizing the strengthened grinding method, strengthened treatment can be carried out on the wear-resisting alloy steel workpiece surface in the grinding process of ejecting a grinding material so as to prolong the fatigue life and improve the surface hardness of a workpiece.

Description

technical field [0001] The invention relates to a method for jetting abrasives for producing special effects, which can strengthen the surface of wear-resistant alloy steel workpieces during the grinding process of jetting abrasives. Background technique [0002] Metal surface processing technology (especially surface modification technology) can greatly improve the strength, hardness and wear resistance of materials, and has been widely used in the processing of mechanical parts. [0003] In the prior art, many technologies related to the surface modification of metal materials have been disclosed. The invention patent CN101070592B of Cai Xun et al. discloses "the method of compound ion implantation surface modification of copper or its alloy", and the compound ion implantation process is used to implant metal elements or non-metallic elements on the surface of copper or its alloy to improve the hardness and Wear resistance, but this method requires a series of processes s...

Claims

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Application Information

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IPC IPC(8): B24C11/00B24C1/10
Inventor 刘晓初萧金瑞陶建华刘长红梁忠伟黄骏
Owner GUANGZHOU UNIVERSITY
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