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Metal ceramic alloy preparation method and product thereof

A cermet and alloy technology, applied in the field of cermet sintering, can solve the problems of knife edge damage and poor controllability, and achieve the effects of improving bonding strength, reducing production cost, and simple process

Active Publication Date: 2014-02-19
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although mechanical sandblasting and mechanical polishing can be used to remove the bonding phase layer on the alloy surface, their controllability is poor, and it may cause damage to the alloy surface, especially to the cutting edge

Method used

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  • Metal ceramic alloy preparation method and product thereof
  • Metal ceramic alloy preparation method and product thereof
  • Metal ceramic alloy preparation method and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for preparing a cermet alloy, comprising the following steps:

[0041] (1) Ingredients: The mass percentages of the raw material powders used in this example are: 50%TiCN, 4%TiC, 9%TaC, 11%WC, 4%Mo 2 C, 1%Cr 3 C 2 , 15%Co, 6%Ni. Among them, TiCN, TaC, WC, Cr 3 C 2 , The average particle size of TiC powder is 1.5μm; Mo 2 The average particle size of the C powder is 2 μm; the average particle size of the Co and Ni powders is 1 μm.

[0042](2) Mixing and pressing: Prepare 500g of mixed powder according to the above mass percentage, add 3% polyethylene glycol as a molding agent, and then place it in a small roller ball mill for ball milling (wet milling). After ball milling, the slurry is dried and prepared. granules, and then pressed into green bodies.

[0043] (3) Sintering: put the above green body into the sintering furnace and sinter according to the following sintering process:

[0044] a. Low-temperature removal of molding agent: from room temperatur...

Embodiment 2

[0052] A method for preparing a cermet alloy, comprising the following steps:

[0053] (1) Ingredients: The mass percentages of the raw material powders used in this example are: 55%TiCN, 3%TiC, 11%TaC, 12%WC, 10%Mo 2 C, 2%Cr 3 C 2 , 7%Co. Among them, the average particle size of TiCN and TiC powders is 1.5 μm; TaC and Cr 3 C 2 The average particle size of powder is 2 μm; the average particle size of WC powder is 0.5 μm; Mo 2 The average particle size of the C powder is 3 μm; the average particle size of the Co powder is 1 μm.

[0054] (2) Mixing and pressing: Prepare 500g of mixed powder according to the above mass percentage, add 3% polyethylene glycol as a molding agent, and then place it in a small roller ball mill for ball milling (wet milling). After ball milling, the slurry is dried and prepared. granules, and then pressed into green bodies.

[0055] (3) Sintering: put the above green body into the sintering furnace and sinter according to the following sintering...

Embodiment 3

[0064] A method for preparing a cermet alloy, comprising the following steps:

[0065] (1) Ingredients: The mass percentage of each raw material powder used in this example is: 42%TiCN, 9%TiC, 9%TaC, 17%WC, 6%Mo 2 C, 2%Cr 3 C 2 , 15%Ni. Among them, the average particle size of TiCN and TiC powders is 1 μm; Mo 2 The average particle size of C powder is 2μm; WC, Cr 3 C 2 , TaC, and Ni powders have an average particle size of 1.5 μm.

[0066] (2) Mixing and pressing: Prepare 500g of mixed powder according to the above mass percentage, add 3% polyethylene glycol as a molding agent, and then place it in a small roller ball mill for ball milling (wet milling). After ball milling, the slurry is dried and prepared. granules, and then pressed into green bodies.

[0067] (3) Sintering: put the above green body into the sintering furnace and sinter according to the following sintering process:

[0068] a. Low-temperature removal of molding agent: from room temperature to the vapo...

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Abstract

The invention discloses a metal ceramic alloy preparation method and a product thereof. The metal ceramic alloy preparation method comprises the following four steps: burdening, mixing, compressing and sintering, wherein a sintering process comprises five stages of removing a molding agent at low temperature, raising the temperature and sintering in a solid phase atmosphere, raising the temperature and sintering at a liquid phase, sintering and keeping the temperature, and cooling rapidly, thereby obtaining metal ceramic alloy provided by the invention. The preparation method provided by the invention has the advantages of simpleness in operation, low production cost, easiness in controlling of the technological process, high production efficiency and the like. The surface of the metal ceramic alloy provided by the invention does not contain a metal bonded phase enrichment layer, thus facilitating the coating of the surface of the metal ceramic, and improvement of the bonding intensity of an alloy base body and the coating.

Description

technical field [0001] The invention belongs to the technical field of cermet sintering, and in particular relates to a method for preparing TiCN and TiC-based cermet alloys and products thereof. Background technique [0002] People are accustomed to directly refer to TiC-based and Ti(C,N)-based cermet composites as cermets, and traditional WC-Co cemented carbide composites as cemented carbide. Ti(C,N)-based cermets have high red hardness, wear resistance, heat resistance and crater wear resistance under high-speed cutting conditions, and are ideal cutting tool materials for high-speed finishing and semi-finishing of steel. [0003] The most basic components of Ti(C,N)-based cermets include Ti(C,N) (or TiC+TiN), TiC, Ni, Co and Mo (or Mo 2 C), when designing the composition of cermets, people may also need to add different additives according to different properties. The addition of Ni and Co binder phases is mainly to improve the strength and toughness of the cermet alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02C22C1/05
Inventor 周书助王社权朱磊张晓明高凌燕鄢玲莉
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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