Silicon carbide ceramic millstone and preparation method

A technology of silicon carbide ceramics and grinding discs, which is applied in the direction of ceramic forming machines and manufacturing tools, can solve the problems of low strength, high production cost and short service life of ceramic grinding discs, and achieve a wide range of adaptable working conditions, long service life and good shape Dimensionally accurate effects

Inactive Publication Date: 2012-02-15
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ceramic grinding discs are usually formed by grouting, or pressed into fan-shaped small pieces of ceramic blanks, fired, processed, and then assembled into ceramic grinding discs. Due to the limitation of process technology, the ceramic grinding discs produced at present have low strength and low toughness. Poor flatness, high production cost, short service life

Method used

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  • Silicon carbide ceramic millstone and preparation method
  • Silicon carbide ceramic millstone and preparation method
  • Silicon carbide ceramic millstone and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Raw material preparation

[0017] The phenolic resin and silicon carbide powder with a particle size of 0.1 μm were evenly mixed at a ratio of 1:3, cured at a temperature of 40° C. to prepare a 50 μm granulated powder (14).

[0018] 2. Compression molding

[0019] When pressing, first install the rubber pad (2) of the upper template on the upper template (1), set the main core tube rubber tube (10) on the main core tube (7), and then set the auxiliary core tube rubber tube (13) On the auxiliary core (11), then set the set main core (7) and auxiliary core (11) on the corresponding position of the upper template (1), and use the main core clamp (9) and auxiliary core Cylinder fixture (12) is positioned and fixed with the upper template (1), and then the middle mold cylinder (3) is lined with rubber tube (4) and fixed with the upper template (1), and then loaded with granulated powder (14) , and then set the lower formwork rubber pad (5) and lower formwork (6) on the ...

Embodiment 2

[0025] 1. Raw material preparation

[0026] The phenolic resin and silicon carbide powder with a particle size of 1.5 μm were evenly mixed at a ratio of 1:4, cured at a temperature of 70° C. to prepare a 130 μm granulated powder (14).

[0027] 2. Compression molding

[0028] When pressing, first install the rubber pad (2) of the upper template on the upper template (1), set the main core tube rubber tube (10) on the main core tube (7), and then set the auxiliary core tube rubber tube (13) On the auxiliary core (11), then set the set main core (7) and auxiliary core (11) on the corresponding position of the upper template (1), and use the main core clamp (9) and auxiliary core Cylinder fixture (12) is positioned and fixed with the upper template (1), and then the middle mold cylinder (3) is lined with rubber cylinder (4) and fixed with the upper template (1), and then loaded into the yttrium oxide stabilized silicon carbide spray mold. Granular powder (14), then set the lower...

Embodiment 3

[0034] 1. Raw material preparation

[0035] The phenolic resin and silicon carbide powder with a particle size of 3 μm were uniformly mixed at a ratio of 1:5, and cured at a temperature of 100° C. to prepare a 200 μm granulated powder (14).

[0036] 2. Compression molding

[0037]When pressing, first install the rubber pad (2) of the upper template on the upper template (1), set the main core tube rubber tube (10) on the main core tube (7), and then set the auxiliary core tube rubber tube (13) On the auxiliary core (11), then set the set main core (7) and auxiliary core (11) on the corresponding position of the upper template (1), and use the main core clamp (9) and auxiliary core Cylinder fixture (12) is positioned and fixed with the upper template (1), and then the middle mold cylinder (3) is lined with rubber cylinder (4) and fixed with the upper template (1), and then loaded into the yttrium oxide stabilized silicon carbide spray mold. Granular powder (14), then set the ...

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Abstract

The invention provides a silicon carbide ceramic millstone and a preparation method. The silicon carbide ceramic millstone is characterized by comprising a ceramic circular ring (A) with a certain wall thickness, grooves formed by alternate bulges (15) and sags (16) are distributed on one surface of the ceramic circular ring (A), and eight through-holes (17) with the same specification are alternately and evenly distributed along the inner side and the outer side of the ceramic circular ring. The preparation method comprises the steps of raw material preparation, pressing, firing and processing, and is characterized in that phenolic resin is evenly mixed with silicon carbide powder with the granularity of 0.1 to 3mum at the ratio of 1:3 to 5; after a mixture is solidified at a temperature of 40 DEG C to 100 DEG C, granulated powder (14) with the granularity of 50 to 200mu m is prepared and is then evenly loaded into a special mould; under the pressure of 50 to 300MPa, isostatic pressing is conducted and the pressure is maintained for 10 to 30 minutes; then the granulated powder is demoulded and a green body of the silicon carbide ceramic millstone is manufactured; and after the firing and cold working, the silicon carbide ceramic millstone is manufactured. The silicon carbide ceramic millstone has the advantages of high strength, high toughness, excellent wear-resisting property and long service life, and is suitable for industrialized large scale production.

Description

technical field [0001] The invention relates to a silicon carbide ceramic grinding disc and a preparation method thereof, belonging to the technical field of structural ceramic preparation. Background technique [0002] Ceramic grinding discs are usually formed by grouting, or pressed into fan-shaped small pieces of ceramic blanks, fired, processed, and then assembled into ceramic grinding discs. Due to the limitation of process technology, the ceramic grinding discs produced at present have low strength and low toughness. The flatness is poor, the production cost is high, and the service life is short. Contents of the invention [0003] The object of the present invention is to provide a silicon carbide ceramic grinding disc and a preparation method that can overcome the above defects, adapt to a wide range of working conditions and have excellent performance. Its technical solution is: [0004] It includes a ceramic ring (A) with a certain wall thickness. On one surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/02C04B35/565C04B35/622
Inventor 唐竹兴杨赞中
Owner SHANDONG UNIV OF TECH
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