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High-strength reactive sintering silicon carbide sealing ring and preparation method thereof

A technology of sintered silicon carbide and sealing rings, which is applied in the direction of engine sealing, mechanical equipment, manufacturing tools, etc., can solve the problems of manual pressing, low pressing efficiency, cumbersome preparation methods, etc., to improve the overall structural strength and save costs Effect

Inactive Publication Date: 2021-01-26
ANHUI DONGXUN SEALING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a high-strength reaction sintered silicon carbide sealing ring and its preparation method, which is used to solve the increasingly high performance requirements of the sealing ring in the existing market mentioned in the background technology. However, the existing sealing ring The strength is not enough and the preparation method is cumbersome, which is not conducive to the development of the enterprise, and manual pressing is used in the sealing ring pressing process, and only one can be pressed at a time, and the pressing efficiency is low.

Method used

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  • High-strength reactive sintering silicon carbide sealing ring and preparation method thereof
  • High-strength reactive sintering silicon carbide sealing ring and preparation method thereof
  • High-strength reactive sintering silicon carbide sealing ring and preparation method thereof

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Embodiment 1

[0039] Embodiment 1, a method for preparing a high-strength reaction-sintered silicon carbide sealing ring, comprising the following steps:

[0040] S01: raw material preparation, weighing 50 parts by weight of silicon carbide, 20 parts by weight of polyurethane, 10 parts by weight of sucrose, 5 parts by weight of chromium powder, 5 parts by weight of ferromanganese, 4 parts by weight of boron nitride, and 3 parts by weight of nickel , 3 parts by weight of niobium, 2 parts by weight of aluminum oxide, 1 part by weight of barium carbonate, 1 part by weight of talcum powder, 0.5 parts by weight of wollastonite and 0.5 parts by weight of bentonite, stand-by;

[0041]S02: Mixing ball milling, firstly add 20 parts by weight of polyurethane and 10 parts by weight of sucrose into the ball mill in turn, stir while adding, then add 50 parts by weight of silicon carbide and 5 parts by weight of chromium powder into the ball mill successively, 5 parts by weight of ferromanganese, 4 parts...

Embodiment 2

[0047] Embodiment 2, a method for preparing a high-strength reaction-sintered silicon carbide sealing ring, comprising the following steps:

[0048] S01: raw material preparation, weighing 60 parts by weight of silicon carbide, 30 parts by weight of polyurethane, 15 parts by weight of sucrose, 8 parts by weight of chromium powder, 8 parts by weight of ferromanganese, 6 parts by weight of boron nitride, and 7 parts by weight of nickel , 6 parts by weight of niobium, 5 parts by weight of aluminum oxide, 3 parts by weight of barium carbonate, 2 parts by weight of talcum powder, 1 part by weight of wollastonite and 1 part by weight of bentonite, stand-by;

[0049] S02: Mixing ball milling, first add 30 parts by weight of polyurethane and 15 parts by weight of sucrose into the ball mill in turn, stir while adding, and then add 60 parts by weight of silicon carbide and 8 parts by weight of chromium powder into the ball mill, 8 parts by weight of ferromanganese, 6 parts by weight of ...

Embodiment 3

[0055] Embodiment 3, a method for preparing a high-strength reaction-sintered silicon carbide sealing ring, comprising the following steps:

[0056] S01: raw material preparation, weighing 55 parts by weight of silicon carbide, 25 parts by weight of polyurethane, 12 parts by weight of sucrose, 6 parts by weight of chromium powder, 7 parts by weight of ferromanganese, 5 parts by weight of boron nitride, and 5 parts by weight of nickel , 4 parts by weight of niobium, 3 parts by weight of aluminum oxide, 2 parts by weight of barium carbonate, 1 part by weight of talcum powder, 0.8 parts by weight of wollastonite and 0.7 parts by weight of bentonite, stand-by;

[0057] S02: Mixing ball milling, firstly add 25 parts by weight of polyurethane and 12 parts by weight of sucrose into the ball mill in turn, stir while adding, then add 55 parts by weight of silicon carbide and 6 parts by weight of chromium powder into the ball mill successively, 7 parts by weight of ferromanganese, 5 par...

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Abstract

The invention provides a high-strength reactive sintering silicon carbide sealing ring, which comprises the following raw materials in parts by weight: 50-60 parts of silicon carbide, 20-30 parts of polyurethane, 10-15 parts of cane sugar, 5-8 parts of chromium powder, 5-8 parts of ferromanganese, 4-6 parts of boron nitride, 3-7 parts of nickel, 3-6 parts of niobium, 25 parts of aluminum oxide, 13parts of barium carbonate, 1-2 parts of talcum powder, 0.5-1 part of wollastonite and 0.5-1 part of bentonite. The invention further discloses a method for preparing the sealing ring, and compressionmolding equipment independently researched and developed in the preparation process. According to the invention, not only is production efficiency of the sealing ring improved, but also energy can besaved.

Description

technical field [0001] The invention belongs to the technical field of seal ring processing, and in particular relates to a high-strength reaction sintered silicon carbide seal ring and a preparation method thereof. Background technique [0002] The sealing ring is a ring-shaped seal with a gap. It acts as a seal against the inner hole wall of the stationary part by virtue of its elasticity after being pressed together. The seal ring is a ring-shaped seal with a gap. Put it in the ring groove of the sleeve, the sleeve and the shaft rotate together, and the sealing ring is pressed against the inner hole wall of the stationary part by the elasticity of the gap after being pressed together, and the seal can be achieved. effect. All contact surfaces are hardened and ground. The sealing ring is made of chromium-containing wear-resistant cast iron, which can be used where the sliding speed is less than 100m / s; if the sliding speed is in the range of 60-80m / s, the sealing ring ca...

Claims

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Application Information

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IPC IPC(8): C04B35/565F16J15/00B28B13/02B28B3/06C04B35/626C04B35/634C04B35/632C04B35/64
CPCB28B3/06B28B13/0215C04B35/565C04B35/6261C04B35/632C04B35/63456C04B35/64C04B2235/3215C04B2235/3217C04B2235/3454C04B2235/349C04B2235/386C04B2235/40C04B2235/404C04B2235/405C04B2235/661F16J15/00
Inventor 王茜胡二营
Owner ANHUI DONGXUN SEALING TECH