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Basalt fiber-reinforced ceramic bond cubic boron nitride (CBN) grinding wheel and preparation method of basalt fiber-reinforced ceramic bond CBN grinding wheel

A technology of basalt fiber and ceramic bond, which is applied in the manufacture of tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problems of low strength of CBN grinding wheels, achieve the effects of reducing processing costs, improving processing efficiency, and increasing speed

Inactive Publication Date: 2013-04-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to propose a kind of basalt fiber reinforced vitrified bond CBN grinding wheel and its preparation method for the defect that the strength of existing vitrified bond CBN grinding wheel is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The components are prepared according to the following weight percentages: CBN abrasive 45%, green silicon carbide abrasive 5%, borosilicate ceramic bond 35%, sugar 12.6%, basalt fiber 0.4%, and paraffin wax 2%.

[0023] Put the prepared powder into a ball mill and mix for 2 hours to make it fully uniform.

[0024] Put the mixture into the grinding wheel mold, and then put the mold into the press to press.

[0025] Pressurization process: first add a pre-pressure of 5MPa, then pressurize to 30MPa at a pressurization rate of 5MPa / min, and then hold the pressure for 2 minutes.

[0026] After pressing, put the grinding wheel blank in a high temperature furnace. During the temperature range from room temperature to 250°C, the temperature rise rate is 5.5°C / min, the temperature is kept at 250°C for 30 minutes, and the temperature rise rate is 16.5°C during the process of 250 to 500°C. / min, heat preservation at 500℃ for 30min, 500~700℃, heating rate of 6.5℃ / min, 700~750℃, heating ra...

Embodiment 2

[0030] The components are prepared according to the following weight percentages: CBN abrasive 40%, green silicon carbide abrasive 6%, borosilicate ceramic bond 35%, white sugar 15%, basalt fiber 0.4%, and paraffin wax 3.6%.

[0031] Put the prepared powder into a ball mill and mix for 2 hours to make it fully uniform.

[0032] Put the mixture into the grinding wheel mold, and then put the mold into the press to press.

[0033] Pressurization process: firstly add a pre-pressure of 3MPa, then pressurize to 30MPa at a pressurization rate of 5MPa / min, and then maintain the pressure for 2 minutes.

[0034] After pressing, put the grinding wheel blank in a high temperature furnace. During the temperature range from room temperature to 250°C, the temperature rise rate is 5.5°C / min, the temperature is kept at 250°C for 30 minutes, and the temperature rise rate is 16.5°C during the process of 250 to 500°C. / min, heat preservation at 500℃ for 30min, 500~700℃, heating rate of 6.5℃ / min, 700~750℃...

Embodiment 3

[0037] The components are prepared according to the following weight percentages: CBN abrasive 35%, green silicon carbide abrasive 6%, borosilicate ceramic bond 40%, white sugar 15%, basalt fiber 0.3%, and paraffin wax 3.7%.

[0038] Put the prepared powder into a ball mill and mix for 2 hours to make it fully uniform.

[0039] Put the mixture into the grinding wheel mold, and then put the mold into the press to press.

[0040] Pressurization process: first add a pre-pressure of 2MPa, then pressurize to 30MPa at a pressurization rate of 5MPa / min, and then maintain the pressure for 2min.

[0041] After pressing, put the grinding wheel blank in a high temperature furnace. During the temperature range from room temperature to 250°C, the temperature rise rate is 5.5°C / min, the temperature is kept at 250°C for 30 minutes, and the temperature rise rate is 16.5°C during the process of 250 to 500°C. / min, heat preservation at 500℃ for 30min, 500~700℃, heating rate of 6.5℃ / min, 700~750℃, heati...

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Abstract

The invention discloses a basalt fiber-reinforced ceramic bond cubic boron nitride (CBN) grinding wheel and a preparation method of the basalt fiber-reinforced ceramic bond CBN grinding wheel. The grinding wheel comprises by mixing, by weight, CNB grinding material 35-45%, green silicon carbide grinding material 3-8%, borosilicate ceramic bond 30-40%, white sugar 10-15%, basalt fibers 0.3-0.4% and paraffin 2-5%. The preparation method is: fully mixing each component; adding the basalt fibers into mixed powder; putting the mixture in a mold to be compacted, then sintering, and finally performing mechanical processing. The basalt fiber-reinforced ceramic bond CBN grinding wheel can effectively overcome shortcomings of common ceramic bond CBN grinding wheels, improves strength of the grinding wheel, is not prone to be blocked, has abrasive resistance of the grinding wheel, and can improve production processing efficiency of the grinding wheel.

Description

Technical field [0001] The present invention involves a CBN sand wheel and its preparation method of basalt fiber -enhanced ceramic binding agent. Background technique [0002] The CBN wheel of ceramic binding agent has good chemical stability and superiority.Compared with diamond abrasives, CBN has better thermal resistance and chemical inertia that is excellent to iron.Therefore, ceramic binding agent CBN abrasive wheels have become commonly used tools for high -speed steel, stainless steel, bearing steel, nickel chromium iron alloy, cast iron and other metal materials.The strength of the ceramic binding agent CBN wheel is mainly reflected in two aspects: (1) the strength of the ceramic binding agent.(2) The holding strength of the abrasive is the hardness of the abrasive.Specific test indicators of the strength of the wheels include: tensile strength, folding strength, compressive strength, and impact strength.During the manufacturing process of the wheel, the strength is not ...

Claims

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Application Information

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IPC IPC(8): B24D3/14B24D3/00B24D18/00
Inventor 张凤林廖广春周玉军
Owner GUANGDONG UNIV OF TECH
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