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Method for producing large thin-wall integral-ring vitrified grinding wheel

A technology of ceramic grinding wheel and production method, which is applied to abrasives, metal processing equipment, grinding devices, etc., can solve the problems of low product yield and inability to manufacture large and thin-walled ceramic grinding wheels in a whole ring.

Active Publication Date: 2014-01-29
HENAN HUAMAO NEW MATERIAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a production method of a large thin-walled ceramic grinding wheel with a whole ring, which solves the problem that the existing large thin-walled ceramic grinding wheel cannot be manufactured in a whole ring or the whole ring is manufactured, and the yield of the product is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for producing a large thin-walled full-ring ceramic grinding wheel, the diameter of the grinding wheel is 300mm, and the thickness is 1.5mm, comprising the following steps:

[0021] The first step, first mix the vitrified bond, diamond and phenolic resin according to the proportion, the vitrified grinding wheel includes 35% vitrified bond according to the volume ratio, 50% the diamond, and the balance is air holes , the phenolic resin is calculated according to the volume ratio of the vitrified grinding wheel, and the addition of the described phenolic resin is 15% of the total volume of the vitrified grinding wheel;

[0022] The second step is to put the raw materials of the first step into the mold, at a temperature of 100°C and a pressure of 15kg / cm 2 , thermoforming;

[0023] The third step, demoulding;

[0024] The fourth step is firing at high temperature, the temperature is 1200° C., and the time is 1 hour. After the firing is completed and passed the ...

Embodiment 2

[0027] A method for producing a large thin-walled full-ring ceramic grinding wheel, the diameter of the grinding wheel is 500 mm, and the thickness is 1 mm, comprising the following steps:

[0028] The first step, at first mix vitrified bond, CBN and polyimide resin according to the ratio, the vitrified grinding wheel comprises 38% vitrified bond according to the volume ratio, the CBN is 50%, and the rest Amount is air hole, and described polyimide resin is according to the volume ratio of vitrified grinding wheel, and the addition of described polyimide resin is 10% of vitrified grinding wheel total volume;

[0029] The second step is to put the raw materials of the first step into the mold, at a temperature of 150°C and a pressure of 18kg / cm 2 , thermoforming;

[0030] The third step, demoulding;

[0031] The fourth step is firing at high temperature, the temperature is 1200° C., and the time is 1 hour. After the firing is completed and passed the inspection, a large thin-...

Embodiment 3

[0034] A method for producing a large thin-walled full-ring ceramic grinding wheel, the diameter of the grinding wheel is 600mm, and the thickness is 1.5mm, comprising the following steps:

[0035] The first step, first mix vitrified bond, diamond and phenolic resin according to the proportion, the vitrified grinding wheel includes 37% vitrified bond according to volume ratio, 45% described diamond, and the balance is air holes , the phenolic resin is calculated according to the volume ratio of the vitrified grinding wheel, and the addition of the described phenolic resin is 13% of the total volume of the vitrified grinding wheel;

[0036] The second step is to put the raw materials of the first step into the mold, at a temperature of 200°C and a pressure of 12kg / cm 2 , thermoforming;

[0037] The third step, demoulding;

[0038] The fourth step is firing at high temperature, the temperature is 1200° C., and the time is 1 hour. After the firing is completed and passed the in...

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Abstract

The invention relates to a method for producing a large thin-wall integral-ring vitrified grinding wheel. The method for producing the large thin-wall integral-ring vitrified grinding wheel includes the following steps that first, vitrified bond, grinding material and resin are evenly mixed according to a certain proportion; second, the raw materials in the first step are filled into a mold and undergo hot press molding; third, demolding is performed; fourth, high pressure firing is performed, and the large thin-wall integral-ring vitrified grinding wheel is obtained after the firing is completed and the grinding wheel passes inspection. The integral-ring thin-wall grinding wheel with the diameter larger than 200mm and the thickness smaller than 10mm can be directly produced with the production method, yield of the products can reach 99%, and demolding yield of the products can reach 100%. Because the large thin-wall integral-ring vitrified grinding wheel produced with the production method does not have bonding seams in the prior art, the surfaces of the ground products are uniform, and corrugation does not exist.

Description

technical field [0001] The invention relates to a production method of a ceramic grinding wheel, in particular to a production method of a large thin-walled full-ring ceramic grinding wheel. Background technique [0002] The production method of general vitrified grinding wheel is: vitrified bond and abrasive are evenly mixed, cold-pressed, fired at high temperature, and the excess part of the surface is processed to obtain vitrified grinding wheel. After the grinding wheel is cold-pressed and formed in the mold, it needs to be demoulded, the formed grinding wheel is taken out, and fired in a high-temperature firing device. Due to the cold press forming, the combination of the vitrified bond and the abrasive is not very fixed, and it is easy to cause deformation or breakage of the formed grinding wheel during demoulding. Especially for some grinding wheels with a diameter greater than 200mm and a thickness less than 10mm, if the whole ring is used for pressing, it is easy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/14B24D3/28B24D18/00
Inventor 秦景厂郭留希袁德禄李晓苹
Owner HENAN HUAMAO NEW MATERIAL TECH DEV
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