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A kind of manufacturing method of large-scale vitrified high-speed grinding wheel

A manufacturing method and large-scale technology, applied in the field of grinding wheel manufacturing, can solve the problems of grinding wheel vibration, abrasive and bond expansion coefficient mismatch, grinding wheel strength reduction, etc., to ensure strength and finished product pass rate, improve firing temperature rise Curve, the effect of improving drying conditions

Inactive Publication Date: 2015-08-12
CHANGSHU JULI GRINDING WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the large-size grinding wheel has a low manufacturing yield. When it is running at a high speed, problems such as cracks and strength decline often occur. The middle includes the temperature difference around the grinding wheel, as well as the temperature difference between the inside and outside of the grinding wheel. The temperature difference will eventually form stress in the grinding wheel, which is the main reason for the decrease in the strength of the grinding wheel; (2) The expansion coefficient of the abrasive and the bond do not match; (3) Drying problem, large-sized grinding wheel needs better drying conditions than ordinary grinding wheel due to its large size; (4) Balance problem, high-speed grinding wheel has a high working line speed, if the balance is not good, it will cause a large gap when the grinding wheel is working. shock

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, manufacturing a large-scale ceramic high-speed grinding wheel whose size is 750*100*305:

[0019] Step 1. Prepare the binder, which is 38% of clay, 30% of feldspar powder, and 32% of high boron glass in percentage by weight. Weigh the above components and put them into the binder mixing tank for mixing for 1 hour. After mixing evenly, sieve get a binding agent;

[0020] Step 2, mixing materials, take by weighing 76.5kg of abrasive, add water glass with a weight of 2.5% of the weight of the abrasive, mix the abrasive with the water glass, and after fully wetting, add a combination of 13% and 2% of the weight of the abrasive respectively The agent and yellow dextrin are fully mixed, and sieved to obtain molding materials;

[0021] Step 3. Start the rotary mold machine, sieve the molding material in 8 times, stir well and then scrape off;

[0022] Step 4. Stop the rotary mold machine, cover the mold cover, start the press, send the spreaded grinding wheel a...

Embodiment 2

[0029] Embodiment 2, manufacturing a large-scale ceramic high-speed grinding wheel whose size is 600*75*305:

[0030] Step 1. Prepare the binder. The ratio by weight is 40% clay, 32% feldspar powder, and 28% high boron glass. Weigh the above components and put them into the binder mixing tank for mixing for 1 hour. After mixing evenly, sieve get a binding agent;

[0031] Step 2, mixing materials, take by weighing 30.8kg of abrasive material, add water glass with a weight of 3% of the weight of the abrasive material, mix the abrasive material with the water glass, after fully wetting, add the combination of 25% and 1.8% of the weight of the abrasive material respectively The agent and yellow dextrin are fully mixed, and sieved to obtain molding materials;

[0032] Step 3. Start the rotary mold machine, sieve the molding material in 5 times, stir well and then scrape off;

[0033] Step 4. Stop the rotary mold machine, cover the mold cover, start the press, send the spreaded gr...

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Abstract

The invention discloses a manufacturing method of a large-sized ceramic high-speed grinding wheel. The manufacturing method comprises the following steps of: step 1, preparing binding agent; step 2, mixing to obtain forming materials; step 3, starting a mold rotating machine, and sieving the forming materials; step 4, stripping a mold; step 5, naturally drying; step 6, putting into a drying room, and drying; step 7, placing into a kiln; step 8, sintering; step 9, drawing, and step 10, processing. The manufacturing method has the advantages that the drying condition of the grinding wheel is improved, a sintering and warming curve is improved, the stability during sintering is improved, and the strength of the grinding wheel and the finished product yield are further ensured.

Description

technical field [0001] The invention relates to a method for manufacturing a grinding wheel, in particular to a method for manufacturing a large-scale ceramic high-speed grinding wheel. Background technique [0002] In order to improve the processing efficiency, the mechanical industry puts forward higher and higher requirements for the linear speed and strength of the grinding wheel. In the current manufacturing of grinding wheels, the linear speed and strength of small-sized grinding wheels can basically meet the requirements of the machinery industry. However, the large-size grinding wheel has a low manufacturing yield. When it is running at a high speed, problems such as cracks and strength decline often occur. The middle includes the temperature difference around the grinding wheel, as well as the temperature difference between the inside and outside of the grinding wheel. The temperature difference will eventually form stress in the grinding wheel, which is the main r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00
Inventor 高志忠
Owner CHANGSHU JULI GRINDING WHEEL
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