Metal ceramic seal ring material and preparation method thereof

A technology of cermets and sealing rings, which is applied in the field of powder metallurgy and cermets, can solve the problems of adverse effects on corrosion resistance, expensive additives, high brittleness, etc., to improve mechanical properties, avoid the formation of brittle phases, and achieve low density. Effect

Inactive Publication Date: 2012-02-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are problems in the preparation of the current lightweight sealing rings, such as the addition of Ti, Al, and unsaturated CK materials to cause high brittleness, Fe, Mo and other metals have adverse effec

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1: Weigh the raw materials to prepare molybdenum-free cermets, with a particle size of 1.3μm (W,Cr)C accounting for 5%, a particle size of 2.5μm (W,Ti)C accounting for 10%, and a particle size of 1.5μm Ni accounts for 10%, Co with a particle size of 1.2μm accounts for 6%, and the rest is Ti(C,N) with a particle size of 1.8μm. The C:N atomic ratio in Ti(C,N) powder is 7:3, (W The weight ratio of W:Cr in ,Cr)C powder is 98:2, and the weight ratio of WC:TiC in (W,Ti)C powder is 7:3. In the process of ball milling, first add (W,Cr)C and (W,Ti)C powder to the ball mill, add oleic acid and PEG6000 forming agent, and ball mill for 24h; then add Ni, Co, Ti(C,N) powder Ball milling for 36 hours, the ball milling medium is anhydrous ethanol, the addition amount is 280ml, the addition amount of PEG6000 forming agent is 2wt%, the addition amount of oleic acid is 1wt%, the ball milling speed is 65r / min, and the grinding ball is WC- with Φ6mm. 6wt% Ni cemented carbide balls, ...

Example Embodiment

[0013] Example 2: Weigh the raw materials to prepare molybdenum-free cermets, with a particle size of 0.8μm (W,Cr)C accounting for 6%, a particle size of 2.0μm (W,Ti)C accounting for 15%, and a particle size of 1.6μm Ni accounts for 8%, Co with a particle size of 1.2μm accounts for 15%, and the rest is Ti(C,N) with a particle size of 1.9μm. The C:N atomic ratio in Ti(C,N) powder is 7:3, (W The weight ratio of W:Cr in ,Cr)C powder is 99:1, and the weight ratio of WC:TiC in (W,Ti)C powder is 7:3. In the ball milling process, first add (W,Cr)C and (W,Ti)C powders to the ball mill, add oleic acid and PEG6000 forming agent, and ball mill for 16h; then add Ni, Co, Ti(C,N) powders Ball mill again for 48 hours, the ball milling medium is anhydrous ethanol, the addition amount is 450ml, the addition amount of PEG6000 forming agent is 5wt%, the addition amount of oleic acid is 0.5wt%, the ball milling speed is 80r / min, and the grinding ball is Φ6mm WC -6wt%Ni cemented carbide balls, the...

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Abstract

The invention discloses a metal ceramic seal ring material and a preparation method thereof. The preparation method is characterized by comprising the following steps of: taking pre-milled (W, Cr) C and (W, Ti) C powders as main additives, mixing with Ni, Co and Ti(C, N), and preparing a metal ceramic seal ring by using a powder metallurgy method. By using the metal ceramic seal ring prepared according to the preparation method disclosed by the invention, the problems of large friability which is caused by the addition of Ti, Al and unsaturated CK material in the prior art, bad influence on corrosive resistance from metals Fe and Mo, high price of additives such as TaC and the like are solved.

Description

technical field [0001] The invention relates to a porcelain sealing ring material and a preparation method thereof, in particular to a cermet lightweight sealing ring material and a preparation method thereof, belonging to the fields of powder metallurgy and cermets. Background technique [0002] In petroleum, chemical, water conservancy and hydropower industries, the use includes electric submersible (submersible, oil) pumps, mud pumps, cement pumps, seawater lift pumps, water booster pumps, water injection pumps, oil pumps, fire pumps, and chemical agent injection pumps. And metering pumps and other pumps are used to transport various liquid media, such as petroleum, refined oil, chemical raw materials, intermediate products and finished products, to various places. In order to prevent the liquid from flowing from the outlet of the impeller to the inlet of the impeller during the operation of the pump, or from the inside of the pump cavity to the outside of the pump throug...

Claims

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Application Information

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IPC IPC(8): C22C29/02C22C1/05
Inventor 熊计郭智兴杨梅万维财董广彪
Owner SICHUAN UNIV
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