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Iron and nickel-based hard alloy cutter material and preparation method thereof

A cemented carbide and tool material technology, applied in the field of cemented carbide, can solve problems such as limitations, and achieve the effects of long service life, improved strength and fracture toughness, and uniform bond distribution

Inactive Publication Date: 2012-05-02
四川欧曼机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although some research has been carried out, the current cemented carbides with iron and nickel instead of Co have limited applications mainly in the fields of wear-resistant parts, mining tools, etc., or other less demanding occasions
However, the cemented carbide that replaces Co with iron and nickel still has a certain gap with the traditional cemented carbide in terms of hardness and wear resistance, which limits its use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The manufacturing method and technological process of the iron-nickel-based cemented carbide cutter material of the embodiment of the present invention are as follows:

[0044] 1) Initial processing: Weigh the raw materials according to the composition, and the raw materials are:

[0045] WC: 83%, hydroxyl iron powder: 9%; grain inhibitor (TiC): 7%; reinforcing agent (Cr 3 C 2 ):1%;

[0046] Add the raw materials weighed in proportion to the roller ball mill for wet grinding;

[0047] 2) Drying: In a vacuum drying oven, dry the pre-processed slurry for 8 hours under the drying conditions of 90°C and vacuum degree of -0.2Pa;

[0048] 3) Loading: Put the dried powder into the sintering mold and compact it;

[0049] 4) Sintering: sintering and molding in a sintering furnace, and sintering in a vacuum sintering furnace.

[0050] The data of the fine-grained WC-based cemented carbide prepared in Example 1 are as follows:

[0051] Grain size: 1.8-2.0μm, hardness: 93HRA...

Embodiment 2

[0053] The manufacturing method and process flow of the fine-grained WC-based cemented carbide in the embodiment of the present invention are as follows:

[0054] 1) Initial processing: Weigh the raw materials according to the composition, and the raw materials are:

[0055] TiC: 84%, nickel hydroxide powder: 7%; grain inhibitor (TiC): 8%; reinforcing agent (Cr3 C 2 ):1%;

[0056] Add the raw materials weighed in proportion to the roller ball mill for wet grinding;

[0057] 2) Drying: In a vacuum drying oven, dry the pre-processed slurry for 8 hours under the drying conditions of 90°C and vacuum degree of -0.2Pa;

[0058] 3) Loading: Put the dried powder into the sintering mold and compact it;

[0059] 4) Sintering: sintering and molding in a sintering furnace, and sintering in a vacuum sintering furnace.

[0060] The data of the fine-grained WC-based cemented carbide prepared in Example 1 are as follows:

[0061] Grain size: 1.6-1.8μm, hardness: 92HRA, bending strength ...

Embodiment 3

[0063] The manufacturing method and process flow of the fine-grained WC-based cemented carbide in the embodiment of the present invention are as follows:

[0064] 1) Initial processing: Weigh the raw materials according to the composition, and the raw materials are:

[0065] TiC: 84%; Hydroxy iron powder: 3%; Hydroxy nickel powder: 4%; Grain inhibitor (TiC): 8%; Reinforcing agent (Cr 3 C 2 ):1%;

[0066] Add the raw materials weighed in proportion to the roller ball mill for wet grinding;

[0067] 2) Drying: In a vacuum drying oven, dry the pre-processed slurry for 8 hours under the drying conditions of 90°C and vacuum degree of -0.2Pa;

[0068] 3) Loading: Put the dried powder into the sintering mold and compact it;

[0069] 4) Sintering: sintering and molding in a sintering furnace, and sintering in a vacuum sintering furnace.

[0070] The data of the fine-grained WC-based cemented carbide prepared in Example 1 are as follows:

[0071] Grain size: 1.6-1.8μm, hardness:...

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Abstract

The invention discloses an iron and nickel-based hard alloy cutter material, which comprises the following materials in percentage by weight: 82-87 percent of TiC or WC serving as a substrate, 6-10 percent of hydroxyl iron powder and / or hydroxyl nickel powder serving as a bonding agent, 7-8 percent of one or more of TaC and VC serving as a grain growth inhibitor and 1-2 percent of Cr3C2 serving as a hardening agent. Due to the adoption of a hard alloy, defects existing in the prior art can be overcome; and iron and nickel are used instead of Co, so that a cutter made of the material with the method has the advantages of high hardness and high toughness, and has an excellent effect which compares favorably with the conventional Co-containing hard alloy material.

Description

Technical field [0001] The invention involves the field of hard alloys, especially a kind of iron -nickel -based hard alloy tool material and its preparation methods. Background technique [0002] With the continuous improvement of human living standards, the demand for resources is also increasing, and the operating costs of resources and the new problems brought about by opening up in the increasingly difficult rock layers have brought about the intensity of resistance to the breakfast and fatigue fracture of the tools., Toughness and abrasion resistance have become higher and higher requirements. As a result, wear -resistant materials with high hardness and high -strength, and new components and new tools, which adapt to the tools under extreme conditions, put forward higher requirementsDue to the high strength and hardness, good abrasion resistance, good abrasion resistance, good redness, small thermal expansion coefficient, high elasticity, and good chemical stability, tradi...

Claims

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Application Information

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IPC IPC(8): C22C29/08C22C29/10C22C1/04
Inventor 李梁
Owner 四川欧曼机械有限公司
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