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Metal ceramic seal ring and preparation method thereof

A cermet and sealing ring technology, which is applied in metal processing equipment, mechanical equipment, liquid fuel engines, etc., can solve the problems of affecting durability and service life, low impact resistance, easy cracking, etc., and achieve high safety performance , improved crack resistance and long service life

Inactive Publication Date: 2016-10-12
HEFEI ZHENGHAO MECHANICAL TECH
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Problems solved by technology

200511160458.7 discloses a high-purity alumina sealing ring, which has the advantages of high density and wear resistance, and can adapt to corrosion in harsh environments. However, the alumina cermet material is brittle, which makes the toughness of the alumina ceramic sealing ring relatively high. Poor, low impact resistance, prone to cracking, affecting its durability and service life

Method used

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Embodiment Construction

[0015] A cermet sealing ring prepared from the following components by weight (kg):

[0016] Alumina 80, zirconium boride 3, Ti6Al4V titanium alloy powder 10, nano titanium dioxide P25 0.5, nano silicon dioxide 0.1, hydroxyethyl cellulose 0.3, titanate coupling agent TMC-201 0.15, sodium hydroxide 6, poly Sorbitate-80 0.05, microcrystalline paraffin 0.3, sodium hexafluoroaluminate 0.3.

[0017] A method for preparing a cermet sealing ring, comprising the following steps:

[0018] (1) First add sodium hydroxide into water to form a 10mol / L solution, then mix it with nano-titanium dioxide P25 and ultrasonically disperse it evenly, then add it to the reactor together, react the reactor under the condition of 150°C for 10 hours, and adjust the pH after cooling To neutrality, add nano-silica, hydroxyethyl cellulose and polysorbate-80 and stir to disperse evenly to obtain a modified solution;

[0019] (2) Mix alumina, zirconium boride, Ti6Al4V titanium alloy powder with absolute e...

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PUM

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Abstract

The invention discloses a metal ceramic seal ring. The metal ceramic seal ring is prepared from, by weight, 80-90 parts of aluminum oxide, 3-5 parts of zirconium boride, 10-15 parts of Ti6Al4V titanium alloy powder, 0.5-1 part of nanometer titanium dioxide P25, 0.1-0.2 part of nanometer silicon dioxide, 0.3-0.5 part of hydroxyethyl cellulose, 0.15-0.25 part of a titanate coupling agent TMC-201, 6-8 parts of sodium hydroxide, 0.05-0.1 part of polysorbate-80, 0.3-0.5 part of microcrystalline wax and 0.3-0.5 part of sodium fluoroaluminate. The metal ceramic seal ring is good in corrosion resistance, the impact resistance and the cracking resistance are improved, good stability and durability are achieved, the service life is long, high hardness, high wear resistance and a good lubricating property are achieved, the use safety performance is high, and the metal ceramic seal ring is suitable for coal mine submerged pumps.

Description

technical field [0001] The invention relates to the technical field of cermet sealing ring materials, in particular to a cermet sealing ring and a preparation method thereof. Background technique [0002] Submersible pump is an important equipment for deep well water extraction. It extracts groundwater to the surface. It is widely used in farmland irrigation, domestic water, mining industry, seawater lifting, ship loading, fountain landscape, hot spring bathing and other fields in China. In the actual use process, due to the corrosion and friction of the conveying medium, there is often the problem of serious wear of the sealing ring. The function of the sealing ring is to prevent abrasion between the pump impeller and the pump casing, improve the water flow state at the pump inlet, improve the efficiency of the pump, and enhance the operation reliability of the pump. Once the sealing ring is severely worn, it will cause the gap between the impeller and the sealing ring to ...

Claims

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Application Information

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IPC IPC(8): C22C29/12B22F1/02B22F5/10F04D29/16F04D29/02
CPCF04D29/026F04D29/165C22C29/12B22F5/106B22F2998/10B22F1/16B22F1/0003B22F3/10B22F3/02
Inventor 郑之松
Owner HEFEI ZHENGHAO MECHANICAL TECH
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