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A kind of strengthening grinding method of wear-resistant 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: 2016-03-02
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, follow-up in-depth studies have shown that this method has the following shortcomings: it only mechanically strengthens the surface of wear-resistant alloy steel workpieces and cannot be chemically modified at the same time.

Method used

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  • A kind of strengthening grinding method of wear-resistant alloy steel workpiece surface
  • A kind of strengthening grinding method of wear-resistant alloy steel workpiece surface
  • A kind of strengthening grinding method of wear-resistant alloy steel workpiece surface

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Example 1 (refined)

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

[0023] (1) Preparation of mixture

[0024] ①The modified liquid for enhanced grinding (abbreviated as grinding liquid) is the following 4 preparation schemes:

[0025] Option 1: Add 15% fatty acid imidazoline borate, 2% sodium benzoate, 12% sodium alkyl sulfonate, 5% triethanolamine, 4% fatty alcohol polyoxyethylene ether, borax (chemical name tetraboric acid Sodium) 3%, disodium ethylenediaminetetraacetic acid 0.5%, sodium hydroxide 1%, polyoxypropylene 0.1% and benzotriazole 0.3% are added to 57.1% water and stirred evenly to obtain an enhanced grinding modification solution;

[0026] Scheme 2: According to weight percentage, 16.5% of phosphate 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% hydr...

example 2

[0038] Example 2 (rough grinding)

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

[0040] (1) Preparation of mixture

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

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

[0043] Scheme 2: According to weight percentage, 16.5% of phosphate amine salt compound, 3% of adipic acid, 10.5% of sodium alkyl sulfate, 4.4% of disodium hydrogen phosphate, 6% of alkylphenol polyoxyethylene ether, glycine- Add 2% hydrochloric acid, 0...

example 3

[0055] Example 3 (The influence of different jet speeds to strengthen the grinding effect)

[0056] 1. The wear-resistant alloy steel workpiece is the inner ring of 1Cr13 bearing ring, which is subjected to intensified grinding.

[0057] (1) Preparation of mixture

[0058] ①Fatty acid imidazoline borate 18%, sodium benzoate 2.2%, sodium alkyl sulfonate 12.5%, triethanolamine 4.5%, fatty alcohol polyoxyethylene ether 2%, borax (chemical name sodium tetraborate) 2.5%, 0.6% disodium ethylenediaminetetraacetic acid, 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 solution;

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

[0060] ③Pass the brown fused alumina powder through a 150-mesh sieve and then a 280-mesh sieve to collect the br...

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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 of spraying abrasives for producing special effects. The method can strengthen the surface of wear-resistant alloy steel workpieces during the grinding process of the spraying abrasives. Background technique [0002] Metal material 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] The prior art has disclosed many related technologies for surface modification of metal materials. The invention patent CN101070592B of Cai Xun et al. discloses "a method for surface modification of copper or its alloy by composite ion implantation", which uses a composite ion implantation process to implant metal or non-metal elements on the surface of copper or its alloy to increase the hardness and hardness of the workpiece. Wear resistance, but this method requires a serie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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