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Titanium carbonitride metal ceramic sealing element and preparation method thereof

A technology of cermet and titanium carbonitride, which is applied in the field of titanium carbonitride cermet seals and its preparation, can solve the problems of high temperature resistance, poor corrosion resistance, increased production cost, and reduced tungsten resources, etc., to achieve extended use Life expectancy, cost savings, and the effects of alleviating resource shortages

Inactive Publication Date: 2014-05-07
NINGBO DONGLIAN MECHANICAL SEAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually cemented carbide is a product made of tungsten carbide, which is used for various pump or kettle seals and shaft sleeves. With the continuous expansion of the scope of application, its shortcomings are gradually revealed. Its high temperature resistance, Corrosion resistance is poor, which limits its practicality in certain working conditions
In addition, tungsten resources are decreasing day by day, and production costs are increasing day by day

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A titanium carbonitride cermet seal. The sealing material of the titanium carbonitride cermet seal is composed of titanium carbide, titanium nitride, nickel, tungsten carbide, molybdenum and carbon black, and the titanium carbonitride cermet seal has its components in accordance with the following weight Percentage preparation: 89.7% of titanium carbide powder, 1% of titanium nitride powder, 6% of nickel powder, 1% of tungsten carbide powder, 2% of molybdenum powder, and 0.3% of carbon black. With this compounding ratio, a titanium carbonitride cermet seal with greater hardness can be obtained.

[0024] The addition of titanium nitride to the titanium carbonitride cermet seal greatly reduces the friction coefficient between the titanium carbonitride seal ring and the counter-grinding ring, thereby prolonging its service life. At the same time, by adding molybdenum to the titanium carbonitride cermet seals, molybdenum can form molybdenum carbide with carbon black, which ca...

Embodiment 2

[0035] A titanium carbonitride cermet seal. The sealing material of the titanium carbonitride cermet seal is composed of titanium carbide, titanium nitride, nickel, tungsten carbide, molybdenum and carbon black, and the titanium carbonitride cermet seal has its components in accordance with the following weight Percentage preparation: titanium carbide powder 71.5%, titanium nitride powder 11%, nickel powder 9%, tungsten carbide powder 3%, molybdenum powder 4%, carbon black 0.5%. With this compounding ratio, a titanium carbonitride cermet seal with relatively balanced performance can be obtained.

[0036] The addition of titanium nitride to the titanium carbonitride cermet seal greatly reduces the friction coefficient between the titanium carbonitride seal ring and the counter-grinding ring, thereby prolonging its service life. At the same time, by adding molybdenum to the titanium carbonitride cermet seals, molybdenum can form molybdenum carbide with carbon black, which can incr...

Embodiment 3

[0047] A titanium carbonitride cermet seal. The sealing material of the titanium carbonitride cermet seal is composed of titanium carbide, titanium nitride, nickel, tungsten carbide, molybdenum and carbon black, and the titanium carbonitride cermet seal has its components in accordance with the following weight Percentage preparation: 89.7% of titanium carbide powder, 1% of titanium nitride powder, 6% of nickel powder, 1% of tungsten carbide powder, 2% of molybdenum powder, and 0.3% of carbon black. With this compounding ratio, a titanium carbonitride cermet seal with higher bending strength can be obtained.

[0048] The addition of titanium nitride to the titanium carbonitride cermet seal greatly reduces the friction coefficient between the titanium carbonitride seal ring and the counter-grinding ring, thereby prolonging its service life. At the same time, by adding molybdenum to the titanium carbonitride cermet seals, molybdenum can form molybdenum carbide with carbon black, w...

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Abstract

The invention relates to a titanium carbonitride metal ceramic sealing element and a preparation method thereof. The sealing material of the titanium carbonitride metal ceramic sealing element consists of titanium carbide, titanium nitride, Ni, tungsten carbide, Mo and carbon black. The titanium carbonitride metal ceramic sealing element is prepared from the components in percentage by weight. The titanium carbonitride metal ceramic sealing element has excellent high-temperature anti-oxidation performance and good wear resistance and corrosion resistance; moreover, abundant titanium resource in China is used as a main raw material to replace rare tungsten resource, thereby reducing the use of tungsten, reaching the purpose of reducing cost and alleviating the resource shortage.

Description

Technical field [0001] The invention relates to a sealing element, in particular to a titanium carbonitride cermet sealing element and a preparation method thereof. Background technique [0002] Usually cemented carbide is a product produced with tungsten carbide as a raw material, and is used for various pumps or kettle seals and shaft sleeves. With the continuous expansion of the scope of application, its shortcomings are gradually exposed. Its high temperature resistance, Poor corrosion resistance, etc., limit its practicality under certain working conditions. In addition, tungsten resources are declining and production costs are increasing. According to expert estimates, my country’s existing tungsten ore resources will face the danger of exhaustion in the next 10 years, so it is urgent to open up new alternative materials. my country has abundant reserves of titanium resources, and the addition of titanium nitride will greatly reduce the coefficient of friction between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02C22C1/05
Inventor 李友宝励永平崔贵胜
Owner NINGBO DONGLIAN MECHANICAL SEAL
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