Resin grinding wheel

A technology of resin grinding wheel and phenolic resin is applied to resin grinding wheel. It can solve the problems of small air hole ratio, reduced strength of grinding wheel, and reduced grinding ability.

Active Publication Date: 2014-01-22
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned method of increasing the pore ratio of the resin grinding wheel by adding inorganic fillers, if the ratio of inorganic fillers is too small, the ratio of pores will be small, and if the ratio of inorganic fillers is too large, the strength of the grinding wheel will be reduced and the grinding ability will be reduced.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0054] Put 100g of alkali lignin (Shandong Quanlin Chemical Co., Ltd.) into 500g of NaOH solution with a mass concentration of 1%, stir until completely dissolved to obtain an alkali lignin solution, and then add 10g of formaldehyde to the above alkali lignin solution to obtain a reaction solution. The above reaction solution was heated to 95° C., and after 4 hours of reaction, a large amount of massive solids were precipitated in the reaction solution to obtain a reaction mixture, and the reaction was stopped at this time. The temperature of the above reaction mixture was lowered to 20° C., and after centrifugation, the solid obtained by centrifugation was dried in an oven at a drying temperature of 45° C. and a drying time of 6 hours to obtain 74.5 g of dried hydroxylated lignin. Finally, the above-mentioned dried hydroxylated lignin was pulverized to 200 mesh with a pulverizer to obtain powdery hydroxylated lignin A, ie coagent A.

[0055] Mix 1000g of 36# brown corundum, ...

Embodiment 2

[0058] Put 50g of alkali lignin (Shandong Quanlin Chemical Co., Ltd.) into 500g of NaOH solution with a mass concentration of 2%, stir until completely dissolved to obtain an alkali lignin solution, and then add 7.5g of furfural to the above alkali lignin solution to obtain reaction solution. The above reaction solution was heated to 85° C., and after 4 hours of reaction, a large amount of massive solids were precipitated in the reaction solution to obtain a reaction mixture, and the reaction was stopped at this time. The temperature of the above reaction mixture was lowered to 25° C., and after centrifugation, the solid obtained by centrifugation was dried in an oven at a drying temperature of 30° C. and a drying time of 10 hours to obtain 39.0 g of dried hydroxylated lignin. Finally, the above-mentioned dried hydroxylated lignin was pulverized to 150 mesh with a pulverizer to obtain powdery hydroxylated lignin B, ie coagent B.

[0059] Mix 720g of 36# brown corundum, 100g o...

Embodiment 3

[0062] Put 150g of calcium lignosulfonate (Shandong Gaotang Duoyuan Lignin Co., Ltd.) into 500g of NaOH solution with a mass concentration of 2%, stir until completely dissolved to obtain a calcium lignosulfonate solution, and then add the above-mentioned lignosulfonate Add 5 g of paraformaldehyde to the calcium solution to obtain a reaction solution. The above reaction solution was heated to 95° C., and after 4 hours of reaction, a large amount of massive solids were precipitated in the reaction solution to obtain a reaction mixture, and the reaction was stopped at this time. The temperature of the above reaction mixture was lowered to 30° C., and after centrifugation, the solid obtained by centrifugation was dried in an oven at a drying temperature of 60° C. and a drying time of 7 hours to obtain 108.4 g of dried hydroxylated lignin. Finally, the above-mentioned dried hydroxylated lignin was pulverized to 250 mesh with a pulverizer to obtain powdery hydroxylated lignin C, ie...

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Abstract

The invention provides a resin grinding wheel which comprises grinding materials, phenolic resin, active agents and wetting agents. The active agents are made of methylolation lignin and participate in resin curing in the preparation process of the resin grinding wheel, cured substances form a microcellular structure when the resin is cured, so that the proportion of air holes of the resin grinding wheel is increased, and the resin grinding wheel has higher cutting resistance and cutting efficiency.

Description

technical field [0001] The invention belongs to the technical field of abrasive abrasives, in particular to a resin grinding wheel. Background technique [0002] The grinding wheel is a circular consolidated abrasive tool with a through hole in the center, which is made by mixing abrasives and binders, compacting, drying, and firing. Grinding wheel is the most widely used type of grinding tool. It rotates at high speed during use. It can be used for rough grinding, semi-finishing, fine grinding and opening of the outer circle, inner circle, plane and various profiles of the workpiece. Tools for machining such as grooving and cutting. [0003] Grinding wheels can be divided into resin grinding wheels, rubber grinding wheels, metal grinding wheels, ceramic grinding wheels, electrodeposition coating grinding wheels and single-layer metal coating grinding wheels according to different types of binders. Among them, the resin grinding wheel is a grinding wheel made of phenolic r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34C08H7/00
Inventor 江成真焦峰董岳徐秋石刘晓敏张丽伟
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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