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Sealing ring for water circulation sealing box of car and preparation method of sealing ring

A sealing ring and sealing box technology, which is applied to the sealing of the engine, mechanical equipment, engine components, etc., can solve the problems of short service life, short service life of the sealing ring, and inability to withstand high temperature, so as to improve the service life and increase the service life , the effect of high product quality

Inactive Publication Date: 2015-05-27
JIYUAN ZHONGKE NEW CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When made of metal, the sealing ring has high strength, but it cannot withstand the acid and alkali corrosion in the environment, resulting in short life and easy deformation
When made of plastic, it can withstand acid and alkali corrosion, but it cannot withstand the high temperature of the environment where it is located, and its strength cannot meet the needs for a long time.
Both of these situations lead to a shorter service life of the sealing ring, which affects the service life of the entire sealing box

Method used

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  • Sealing ring for water circulation sealing box of car and preparation method of sealing ring
  • Sealing ring for water circulation sealing box of car and preparation method of sealing ring
  • Sealing ring for water circulation sealing box of car and preparation method of sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) First, take 96 parts of 99.5% alumina by weight as the main material; 0.2 parts of silicon dioxide, 0.2 parts of kaolin, 0.2 parts of zirconia, and 3.4 parts of calcium carbonate are mixed as auxiliary materials.

[0032] 2) Dry the main materials and auxiliary materials at 130°C respectively, and then put the respective dried bodies into the ball mill and ball mill for 20 hours; respectively randomly analyze the median diameter of the respective powders to be ≤3 microns . Of course, if the particle size requirements are not met, the ball milling time can be appropriately extended for 1 to 2 hours until the particle size of the powder analyzed immediately meets the requirements. When the respective particle sizes meet the requirements, fully mix the respective powders and stir until uniform.

[0033] 3) Add 10 parts by weight of paraffin wax in proportion, make a paste after stirring, and place it statically to make a wax cake. The wax cake was heated at 80°C for 8...

Embodiment 2

[0038] First, take 96 parts of alumina with a weight of 99.8% as the main material; 0.2 parts of silicon dioxide, 0.2 parts of kaolin, 0.2 parts of zirconia, and 3.4 parts of calcium carbonate are mixed as auxiliary materials.

[0039] Other steps and parameters are the same as in Example 1.

Embodiment 3

[0041] First, take 96 parts of alumina with a weight of 99.5% as the main material; 1 part of silicon dioxide, 1 part of kaolin, 1 part of zirconia, and 1 part of calcium carbonate are mixed as auxiliary materials.

[0042] Other steps and parameters are the same as in Example 1.

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Abstract

The invention provides a sealing ring for a water circulation sealing box of a car. A hollow shaft is arranged in a sealing box and each set of the sealing ring comprises a left sealing ring and a right sealing ring which is matched with the left sealing ring in use; the left sealing ring and the right sealing ring are respectively provided with transparent ring holes; the left sealing ring and the right sealing ring are sleeved on the hollow shaft in a clearance fit manner through respective ring holes, and are located in the sealing box; a right side surface of the left sealing ring and a left side surface of the right sealing ring are smooth surfaces and are mutually and tightly contacted; meanwhile, two inner positioning grooves are symmetrically arranged at the left side of the ring hole of the left sealing ring along a longitudinal axis; four outer positioning grooves are uniformly and symmetrically distributed on the outer surface of the right sealing ring along the longitudinal axis; the left sealing ring and the right sealing ring are made of a ceramic material with the weight content of aluminum oxide of not less than 95%, wherein the volume density is more than or equal to 3.7 g / cm<3>, the bending strength is more than or equal to 250 MPa, the coefficient of thermal expansion at a temperature of 20-500 DEG C is less than or equal to 7.2*10 to the 6th power / DEG C, the coefficient of heat conductivity is less than or equal to 17 CW / m*k, the hardness is more than or equal to 85 Hp*A, the puncture strength is more than or equal to 18 kv / mm, and the heat resistance is more than or equal to 1500 DEG C; and meanwhile, the RZ roughness of the right side surface of the left sealing ring and the right sealing ring is less than or equal to 85.

Description

technical field [0001] The invention relates to a sealing ring used in an automobile water circulation sealing box, which plays a role of sealing. The invention also relates to a preparation method of the sealing ring. Background technique [0002] Now it is generally used for the sealing ring in the sealing box of the automobile water cycle. Generally, the sealing box is provided with a casing, and a hollow hollow shaft is arranged in the casing. At least one set of sealing rings is set on the hollow shaft. Each set of sealing rings includes: A left seal ring and a right seal ring used in conjunction with the left seal ring, the left and right seal rings are squeezed by the spring device provided in the casing to achieve mutual tight contact to play a sealing role, and each set of seal rings is also provided by setting The anti-rotation positioning device on the housing, hollow shaft and sealing ring prevents rotation. The important part, the sealing ring, has a service l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/34C04B35/10C04B35/622
Inventor 张占群王成平李国营
Owner JIYUAN ZHONGKE NEW CERAMICS