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A kind of preparation method of low-density macroporous ceramic grinding wheel

A technology of ceramic grinding wheels and large pores is applied in the field of grinding wheels, which can solve the problems of low green strength of grinding wheels, cracks of ceramic grinding wheels, affecting product quality, etc., and achieve the effects of reducing the rate of morphology defects, reducing dosage, and shortening drying time.

Active Publication Date: 2022-06-17
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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  • A kind of preparation method of low-density macroporous ceramic grinding wheel
  • A kind of preparation method of low-density macroporous ceramic grinding wheel

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preparation example Construction

[0040] In addition, the present invention also provides a method for preparing a low-density large-porosity ceramic grinding wheel, which is used to manufacture the low-density large-porosity ceramic grinding wheel as in the first embodiment, including:

[0041] S1, formula design, formulate according to the following components,

[0042] Abrasive 100 parts;

[0043] 10-30 copies of ceramic bond;

[0044] 5-15 parts of pore-forming agent;

[0045] Resin binder 2-5 parts;

[0046] Wherein, the resin binder is a mixture of resin liquid and diluent, and the ratio of resin liquid and diluent is 1:1 to 1:4;

[0047] S2. Mixing, 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 ceramic bond and mix for 10-15min; after mixing evenly, according to the particle size of the abrasive sieving;

[0048] S3, forming, the speed of the press turntable is controlled at 30-50r / min when spreading; ...

Embodiment 1

[0055] Abrasive 20kg, ceramic bond 1kg, pore-forming agent 3kg, resin bond 1kg; specifically, the abrasive is white corundum, and the ceramic bond includes 45wt% SiO 2 , 5wt% B 2 O 3 , 10wt% Al 2 O 3 , 10wt% alkali metal oxide, the pore-forming agent is the treated walnut shell, the resin solution is furfural, and the diluent is alcohol.

[0056] First, mix the resin binder and the abrasive particles evenly for about 5 minutes, then add the pore-forming agent and mix for about 3 minutes, and finally add the ceramic 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 for stuffing after feeding. In order to prevent the blank from solidifying and hardening, it can be directly pressed and formed; when spreading the material, the speed of the press turntable is controlled at 30r / min to improve the uniformity of the spreading; Directly heat and cure at 80 °C for 4 hours; in a sufficient o...

Embodiment 2

[0058] Abrasive 20kg, ceramic bond 2kg, pore-forming agent 1kg, resin bond 0.4kg. Among them, the abrasive is white corundum, and the ceramic bond includes 50wt% SiO 2 , 10wt% B 2 O 3 , 15wt% Al 2 O 3 , 15wt% alkali metal oxide, the pore-forming agent is the treated walnut shell, the resin liquid is phenolic, and the diluent is alcohol.

[0059] First, mix the resin binder and the abrasive particles uniformly for about 6 minutes, then add the pore-forming agent and mix for about 4 minutes, and finally add the ceramic 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 the material, in order to prevent the material from solidifying and hardening, it can be directly pressed and formed; when the material is spread, the speed of the rotary table of the press is controlled at 40r / min to improve the uniformity of the material; Directly heat and cure at 100 °C ...

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Abstract

The invention relates to a low-density macroporous ceramic grinding wheel, comprising 100 parts of abrasive material; 10-30 parts of vitrified bond; 5-15 parts of pore-forming agent; 2-5 parts of resin binder; wherein the resin binder is resin liquid Mixture with diluent, the ratio of resin liquid to diluent is 1:1 to 1:4. The low-density macroporous ceramic grinding wheel provided by the present invention adopts the modulated resin binder to replace the temporary binder and wetting agent in the prior art. When preparing the low-density macroporous grinding wheel, the strength of the green body of the grinding wheel is improved and the The appearance defect rate produced in the production process is improved, and the qualified rate of product quality is improved; meanwhile, the surface-treated walnut shell reduces defects such as cracks on the ceramic grinding wheel caused by inconsistency and inhomogeneity in volatilization during the drying and sintering process; The grinding wheel blank can be solidified directly, which shortens the drying time and improves the production efficiency.

Description

technical field [0001] The invention relates to the technical field of grinding wheels, in particular to a preparation method of a low-density large-porosity ceramic grinding wheel. Background technique [0002] Existing ceramic grinding wheels are mainly prepared from raw materials such as abrasives, ceramic binders, temporary binders, and wetting agents. They are the most important type of abrasive tools in the field of grinding and have a wide range of applications. Under some special processing requirements, in order to avoid problems such as grinding wheel blockage and workpiece burn, ceramic grinding wheels are required to have low density, low hardness, large pores and other characteristics. [0003] At present, large-porous ceramic grinding wheels mostly use dextrin powder as temporary binder, water glass, dextrin liquid, etc. as wetting agent, and walnut shell as pore-forming agent. In the preparation of low-density large-porosity grinding wheels, due to the low gr...

Claims

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Application Information

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Patent Type & Authority Patents(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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