Metal ceramic alloy free of core-ring structure and preparation method thereof

A cermet and alloy technology, applied in the field of core-ring structure metal-ceramic alloy and its preparation, can solve the problems of difficult to control the thickness of the core-ring structure, fracture toughness and bending strength of the metal-ceramic, incomplete annular shell, etc. Achieve the effects of suppressing denitrification, reducing production costs, and excellent initial microstructure

Active Publication Date: 2019-02-15
ZIGONG CEMENTED CARBIDE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the problems referred to above, the first purpose of the present invention is to provide a coreless-ring structure cermet alloy to solve the incomplete annular shell, so that a part of Ti(C,N) in the hard phase and the binder phase metal will directly contact, causing decarburization of the hard phase, causing the fracture toughness and flexural strength of the cermet to decrease; the second object of the present invention is to provide a method for preparing a core-ring structure cermet alloy to solve the problem of core-ring structure Thickness difficult to control

Method used

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  • Metal ceramic alloy free of core-ring structure and preparation method thereof
  • Metal ceramic alloy free of core-ring structure and preparation method thereof
  • Metal ceramic alloy free of core-ring structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Ti(C 0.5 ,N 0.5 ) The micron powder particle size is FSSS1.8 and weighs 400g, (Ti, W8, Mo5, Ta2.5, Zr0.35) (C 0.5 ,N 0.5 ) micron powder particle size is FSSS1.5 weighing 1000g, Ti(C 0.5 ,N 0.5 ) Submicron powder particle size is FSSS0.8 and weighs 960g, (Ti, W8, Mo5) (C 0.5 ,N 0.5 ) The nano powder particle size is FSSS0.1 and weighs 840g, and the WC powder with powder particle size is FSSS0.8 weighs 800g. Weigh 3500ml of absolute ethanol as the ball milling medium, weigh 90g of polyvinyl alcohol as the molding agent, and weigh 6g of acetholamine as the dispersant.

[0040] (1) Ball mill mixing: put the raw material powder prepared according to step (1) into YG6X alloy balls with a diameter of 10mm and absolute ethanol as the ball milling medium, and add 6g of dispersant acethamine and 90g of forming agent polyvinyl alcohol at the same time. Put it into a clean stainless steel ball mill tank, then ball mill it on a roller ball mill for 144h, the ball-to-material...

Embodiment 2

[0047] Ti(C 0.5 ,N 0.5 ) The micron powder particle size is FSSS1.5 and weighs 830g, (Ti, W8, Mo5, Ta2.5, Zr0.35) (C 0.5 ,N 0.5 ) Micron powder particle size is FSSS1.5 weighing 360g, Ti(C 0.5 ,N 0.5 ) Submicron powder particle size is FSSS0.8 and weighs 820g, (Ti, W8, Mo5) (C 0.5 ,N 0.5 ) nanometer powder with a particle size of FSSS0.15 weighs 390g, Ni powder with a particle size of FSSS1.5 weighs 320g, Co powder with a particle size of FSSS1.2 weighs 320g, and WC powder with a particle size of FSSS0.8 weighs 600g , the powder particle size is FSSS1.5 Mo 2 C powder weighs 360g; the ball milling medium hexane weighs 3500ml, the forming agent adopts paraffin wax and weighs 160g, and the dispersant adopts stearic acid and weighs 8g.

[0048] (1) Ball mill mixing: Put the raw material powder prepared according to step (1) into YG6X alloy balls with a diameter of 6.25mm and hexane as the ball milling medium, add 8g of hard acid as a dispersant and 160g of paraffin wax as a...

Embodiment 3

[0055] Ti(C 0.5 ,N 0.5 ) Micron powder particle size is FSSS1.2 weighing 760g, (Ti, W8, Mo5) (C 0.5 ,N 0.5 ) Micron powder particle size is FSSS1.5 weighing 240g, Ti(C 0.5 ,N 0.5 ) Submicron powder particle size is FSSS0.7 and weighs 760g, (Ti, W8, Mo5) (C 0.5 ,N 0.5 ) The nano powder particle size is FSSS0.1 and weighs 240g, the Ni powder with powder particle size of FSSS1.5 weighs 200g, the Cr powder with powder particle size of FSSS1.5 weighs 120g, and the Co powder with powder particle size of FSSS1.2 weighs 650g , WC powder with a powder particle size of FSSS0.8 weighs 600g, and Mo powder with a powder particle size of FSSS1.5 2 C powder weighs 49g, and the powder particle size is Cr of FSSS1.5 2 C 3 Weigh 60g of powder; weigh 3500ml of ball milling medium hexane, weigh 160g of paraffin wax as forming agent, and weigh 40g of hard acid as dispersant.

[0056] (1) Ball mill mixing: put the raw material powder prepared according to step (1) into YG6X alloy balls wit...

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Abstract

The invention relates to the technical field of metal ceramic material preparation, and relates to a metal ceramic alloy free of a core-ring structure and a preparation method thereof. The metal ceramic alloy free of the core-ring structure comprises the following components of, in percentage by weight, 10-55% of Ti (C, N) micron powder, 10-55% of (Ti, M) (C, N) micron powder, 10-55% of Ti (C, N)sub-micron or / and nano powder, 10-55% of (Ti, M) (C, N) sub-micron or / and nano powder, 5-20% of WC, 0-30% of TiC, 0-30% of TiN, 0-20% of Co, 0-20% of Ni, 0-10% of Cr, 0-15% of Mo2C, 0-10% of TaC / NbC,0-2. 5% of VC, 0-5% of Cr2C3, and 0-1.2% of carbon black; the components are prepared into a mixture according to a certain ratio, the mixture is subjected to ball milling, sieving and mould pressingto prepare a blank, and the blank is subjected to sintering and cooling to prepare a metal ceramic material free of the core-ring structure. According to the method, a powder metallurgy method is adopted to prepare the metal ceramic alloy free of the core-ring structure, and the technological difficulty of being not easy to control the thickness of a microcosmic core-ring structure in the preparation process a traditional metal ceramic with core-ring structures is solved.

Description

technical field [0001] The invention belongs to the technical field of cermet material preparation, in particular to a coreless-ring structure cermet alloy and a preparation method thereof. Background technique [0002] Ti(C,N)-based cermet alloy has unique performance advantages. It has excellent wear resistance, high temperature and high hardness, thermal stability, oxidation resistance and anti-adhesion at 700-1100 ° C. It is a high temperature, One of the base materials is selected for high-speed main cutting tools. Because this type of alloy also has stable high-temperature strength, good friction performance and acid and alkali corrosion resistance, it is widely used in various industries and fields such as high-temperature parts of engines, petrochemical and chemical fibers. Compared with the traditional WC-Co cemented carbide, this type of material fills the gap between the material requirements of cemented carbide and ceramic tools, and effectively saves the precio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02C22C1/05
CPCC22C1/051C22C29/005C22C29/02
Inventor 董定乾时凯华廖军舒军唐启佳郑江
Owner ZIGONG CEMENTED CARBIDE CORP
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