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Composite resin binder superhard grinding wheel and preparation method thereof

A composite resin and binder technology, which is used in manufacturing tools, metal processing equipment, grinding/polishing equipment, etc. quality, reducing surface scratches, reducing the effect of trimming frequency

Active Publication Date: 2021-04-13
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the fine grinding process of the center frame of the ordinary grinding wheel, due to the limitation of its own performance, the abrasive has low hardness, low grinding efficiency, easy to fall off, poor wear resistance, short service life, and insufficient shape retention, resulting in the need for frequent dressing of the grinding wheel and deep holes on the surface of the center frame. Difficult to remove scratches and low product yield
When finely grinding the stainless steel middle frame with higher strength, there may even be problems such as grinding and burning the workpiece, making it difficult to process a qualified finished product

Method used

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  • Composite resin binder superhard grinding wheel and preparation method thereof
  • Composite resin binder superhard grinding wheel and preparation method thereof
  • Composite resin binder superhard grinding wheel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A composite resin bond superhard grinding wheel, which is composed of the following raw materials in weight percentage: 10% modified phenolic resin powder (6530A), 40% polyurethane elastomer (YC-9010, A:B=1:1), diamond ( LMF / LMF+, particle size M8 / 16) 10%, cubic boron nitride (CBNM-B, particle size M8 / 12) 15%, white corundum (particle size W5) 12%, talcum powder 5%, carbon black (N220) 3% , Sodium nitrate 5%.

[0039] The preparation method of the composite resin bond superhard grinding wheel of the present embodiment comprises the following steps:

[0040] (1) Weigh carbon black, 50% modified phenolic resin powder in the formula (that is, half the amount of modified phenolic resin powder in the formula) and mix evenly, then add to component A of polyurethane elastomer, stir and mix and ultrasonic Disperse for 40 minutes to obtain phase I binder;

[0041] (2) Weigh talcum powder and sodium nitrate and mix them evenly, then add them to the remaining modified phenolic r...

Embodiment 2

[0051] A composite resin bond superhard grinding wheel, which is composed of the following raw materials in weight percentage: 30% modified phenolic resin powder (6530A), 25% polyurethane elastomer (YC-9010, A:B=1:0.8), diamond ( LMF / LMF+, particle size M8 / 16) 15%, cubic boron nitride (CBNM-B, particle size M8 / 12) 10%, white corundum (particle size W5) 12%, talcum powder 4%, carbon black (N220) 1% , Sodium nitrate 3%.

[0052] The preparation method of the composite resin bond superhard grinding wheel of the present embodiment comprises the following steps:

[0053] (1) Weigh carbon black and 30% modified phenolic resin powder in the formula and mix evenly, then add it to component A of polyurethane elastomer, stir and mix and ultrasonically disperse for 30 minutes to obtain the first-stage binder;

[0054] (2) Weigh talcum powder and sodium nitrate and mix them evenly, then add them to the remaining modified phenolic resin powder, sieve and mix evenly to obtain the phase II ...

Embodiment 3

[0063] A composite resin bond superhard grinding wheel, which is composed of the following raw materials in weight percentage: modified phenolic resin powder (6530A) 20%, polyurethane elastomer (YC-9010, A:B=1:2) 26%, diamond ( LMF / LMF+, particle size M8 / 16) 10%, cubic boron nitride (CBNM-B, particle size M8 / 12) 20%, white corundum (particle size W5) 15%, talcum powder 3%, carbon black (N220) 2% , Sodium nitrate 4%.

[0064] The preparation method of the composite resin bond superhard grinding wheel of the present embodiment comprises the following steps:

[0065] (1) Weigh carbon black and 60% of the modified phenolic resin powder in the formula and mix evenly, then add it to component A of the polyurethane elastomer, stir and mix and ultrasonically disperse for 50 minutes to obtain the first-stage binder;

[0066] (2) Weigh talcum powder and sodium nitrate and mix them evenly, then add them to the remaining modified phenolic resin powder, sieve and mix evenly to obtain the ...

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Abstract

The invention belongs to the technical field of superhard material products, and particularly relates to a composite resin binder superhard grinding wheel and a preparation method thereof. The composite resin binder superhard grinding wheel comprises the following raw materials in percentage by weight: 10-30% of resin powder, 25-40% of resin liquid, 10-15% of diamond, 10-20% of cubic boron nitride, 8-15% of white corundum, 3-5% of talcum powder, 1-3% of carbon black and the balance of sodium nitrate. The composite resin binder superhard grinding wheel replaces a common abrasive grinding wheel, the number of metal middle frames accurately ground by the single grinding wheel is increased, the finishing frequency is reduced, and the yield of products is increased.

Description

technical field [0001] The invention belongs to the technical field of superhard material products, and in particular relates to a composite resin bonded superhard grinding wheel and a preparation method thereof. Background technique [0002] Smart mobile terminals represented by smart phones are the most widely used digital products in modern society, and have become the most essential items in people's daily life. With the advent of the 5G era, affected by the electromagnetic shielding properties of metals, non-metallic materials such as ceramics and glass will be widely used in 5G smartphones. The industry has changed from "metal middle frame + metal shell" to "metal middle frame + non-metal shell" "develop. In the era when all people look at their faces, narrow bezels and high screen-to-body ratios are becoming more and more popular; heavy materials such as 3D glass and ceramic cover plates are also widely used; The frame strength requirements are getting higher and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34B24D18/00
CPCB24D3/28B24D3/344B24D18/0009
Inventor 李少杰张高亮叶腾飞钱灌文王礼华史林峰
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD