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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 effects on corrosion resistance, and TaC and other additives are expensive.
Therefore the present invention aims at the problems existing at present, has invented a kind of cermet lightweight sealing ring material and preparation method

Method used

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Examples

Experimental program
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Effect test

example 1

[0012] Example 1: Prepare molybdenum-free cermets by weighing raw materials by weight percentage, (W, Cr) C with a particle size of 1.3 μm accounts for 5%, (W, Ti) C with a particle size of 2.5 μm accounts for 10%, and (W, Ti) C with a particle size of 1.5 μm 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 ,Cr) The weight ratio of W:Cr in C powder is 98:2, and the weight ratio of WC:TiC in (W,Ti)C powder is 7:3. During the ball milling process, the (W,Cr)C and (W,Ti)C powders are first added to the ball mill, and oleic acid and PEG6000 molding agent are added at the same time, and ball milled for 24 hours; then Ni, Co, Ti(C,N) powders are added Then ball mill for 36 hours, the ball milling medium is absolute 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 ...

example 2

[0013]Example 2: Prepare molybdenum-free cermets by weighing raw materials by weight percentage, (W, Cr) C with a particle size of 0.8 μm accounts for 6%, (W, Ti) C with a particle size of 2.0 μm accounts for 15%, and (W, Ti) C with a particle size of 1.6 μm Ni accounts for 8%, Co with a particle size of 1.2 μm accounts for 15%, and the rest is Ti (C, N) with a particle size of 1.9 μm. The atomic ratio of C:N in Ti (C, N) powder is 7:3, (W ,Cr) The weight ratio of W:Cr in C powder is 99:1, and the weight ratio of WC:TiC in (W,Ti)C powder is 7:3. During the ball milling process, the (W,Cr)C and (W,Ti)C powders were first added to the ball mill, and oleic acid and PEG6000 forming agent were added at the same time, and ball milled for 16 hours; then Ni, Co, Ti(C,N) powders were added Then ball mill for 48 hours, the ball milling medium is absolute ethanol, the addition amount is 450ml, the addition amount of PEG6000 molding agent is 5wt%, the addition amount of oleic acid is 0.5w...

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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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