Low-density large-pore ceramic grinding wheel and preparation method thereof

A technology of ceramic grinding wheel and large pores, applied in the field of grinding wheel, can solve the problems of low green strength of grinding wheel, affecting product quality, cracking of ceramic grinding wheel, etc., and achieve the effect of reducing the rate of morphology defect, shortening drying time, and reducing dosage

Active Publication Date: 2021-04-20
SUZHOU FAR EAST ABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing a low-density large-porous grinding wheel, due to the low strength of the green body of the grinding wheel, it is easy to produce shape defects during the production process, which affects product quality
At the same time, it is easy to cause cracks and other defects in the ceramic grinding wheel during the drying and sintering process.

Method used

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  • Low-density large-pore ceramic grinding wheel and preparation method thereof
  • Low-density large-pore ceramic grinding wheel and preparation method thereof
  • Low-density large-pore ceramic grinding wheel and preparation method thereof

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preparation example Construction

[0042] In addition, the present invention also provides a preparation method of a low-density large-porous vitrified grinding wheel, which is used to manufacture the low-density large-porous vitrified grinding wheel as in Example 1, comprising:

[0043] S1, formulation design, formulate according to the following components,

[0044]

[0045] Wherein, the resin binder is a mixture of resin liquid and diluent, and the ratio of resin liquid to diluent is 1:1 to 1:4;

[0046] S2, mixing materials, mix the resin binder and the abrasive evenly, the mixing time is 5-8min, then add the pore-forming agent and mix for about 3-5min, then add the vitrified binder and mix for 10-15min; after mixing evenly, according to the particle size of the abrasive carry out sieving treatment;

[0047] S3, molding, the speed of the press turntable is controlled at 30-50r / min when spreading the material;

[0048] S4. Curing: After the grinding wheel blank is left to stand naturally for 12-24 hours...

Embodiment 1

[0054] 20kg of abrasive, 1kg of vitrified bond, 3kg of pore forming agent, 1kg of resin bond; specifically, the abrasive is white corundum, and the vitrified bond includes 45wt%% SiO 2 , 5wt% B 2 o 3 , 10wt% Al 2 o 3 , 10wt% alkali metal oxide, the pore-forming agent is treated walnut shell, the resin liquid is furfural, and the diluent is alcohol.

[0055] First, mix the resin binder and abrasive grains evenly for about 5 minutes, then add the pore-forming agent and mix for about 3 minutes, and finally add the vitrified bond and mix for 10 minutes; after mixing evenly, sieve according to the particle size of the abrasive and pore-forming agent; There is no need to stuff the material after the material is filled. In order to prevent the blank from solidifying and hardening, it can be directly pressed and formed; the speed of the press turntable is controlled at 30r / min when spreading the material to improve the uniformity of the material; after the grinding wheel blank is l...

Embodiment 2

[0057] 20kg of abrasive, 2kg of vitrified bond, 1kg of pore-forming agent, and 0.4kg of resin binder. Among them, the abrasive is white corundum, and the vitrified bond includes 50wt% 0 of SiO 2 , 10wt% B 2 o 3 , 15wt% Al 2 o 3 , 15wt% alkali metal oxide, the pore-forming agent is treated walnut shell, the resin liquid is phenolic, and the diluent is alcohol.

[0058] First, mix the resin binder and abrasive grains evenly for about 6 minutes, then add the pore-forming agent and mix for about 4 minutes, and finally add the vitrified bond and mix for 12 minutes; after mixing evenly, sieve according to the particle size of the abrasive and pore-forming agent; There is no need to stuff the material after filling. In order to prevent the blank from starting to solidify and harden, it can be directly pressed and formed; the speed of the press turntable is controlled at 40r / min when spreading the material to improve the uniformity of the spreading; Directly heat and cure at 100°...

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Abstract

The invention relates to a low-density large-pore ceramic grinding wheel. The low-density large-pore ceramic grinding wheel comprises 100 parts of grinding materials, 10-30 parts of ceramic bond, 5-15 parts of pore forming agent, and 2-5 parts of resin binder, wherein the resin binder is a mixture of a resin solution and a diluent, and the ratio of the resin solution to the diluent is 1: 1-1: 4. According to the low-density large-pore ceramic grinding wheel provided by the invention, the modulated resin binder is adopted to replace a temporary binder and a wetting agent in the prior art, so that when the low-density large-pore ceramic grinding wheel is prepared, the strength of a grinding wheel green body is improved, the morphology defect rate generated in the production process is reduced, and the percent of pass of the product quality is increased; and meanwhile, walnut shells subjected to surface treatment reduce the defects of cracks and the like of the ceramic grinding wheel caused by inconsistent and non-uniform volatilization in the drying and sintering process. The pressed grinding wheel green body can be directly cured, the drying time is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of grinding wheels, in particular to a low-density macroporous ceramic grinding wheel and a preparation method thereof. Background technique [0002] Existing vitrified grinding wheels are mainly prepared from raw materials such as abrasives, vitrified bonds, temporary binders, and wetting agents. They are the most important type of abrasive tools in the field of grinding processing and have a very wide range of applications. Under some special processing requirements, in order to avoid problems such as grinding wheel clogging and workpiece burns, ceramic grinding wheels are required to have characteristics such as low density, low hardness, and large pores. [0003] At present, dextrin powder and the like are mostly used as temporary binders for macroporous ceramic grinding wheels, water glass, dextrin solution, etc. are used as wetting agents, and walnut shells are used as pore-forming agents. When prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/14B24D3/34B24D18/00C04B38/06C04B35/10C04B35/622
Inventor 黄庆飞乔延锋张晓月戴杰司文元孙明施雨轩
Owner SUZHOU FAR EAST ABRASIVES
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