Preparation method of composite hard alloy used as cutter material

A cemented carbide and tool material technology, applied in the field of composite cemented carbide preparation, can solve the problems of limited application, low strength and toughness, etc., and achieve the effects of inhibiting grain growth, improving hardness and toughness, and purifying grain boundaries

Active Publication Date: 2015-05-20
CHENGDU BANGPU CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with WC-Co cemented carbide, the lower strength and toughness of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The composite cemented carbide of this embodiment is made of the following components by weight:

[0037] 35 parts of nano titanium carbide, 5 parts of nano titanium nitride, 7 parts of tungsten carbide, 5 parts of niobium carbide, 3-7 parts of silicon carbide, 3 parts of cobalt powder, 1 part of yttrium oxide, 1 part of boron carbide, and 1 part of copper powder. The particle size of the tungsten carbide is 2.0-5.0 μm, the particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the copper powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; The particle size of niobium carbide, silicon carbide and boron carbide is 1.5-3.5 μm.

[0038] The nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, boron carbide, and copper powder weighed according to the above-mentioned components are uniformly mixed by dry ball milling, and then reduced in a hydrogen atmosphere. Obtai...

Embodiment 2

[0044] The composite cemented carbide of this embodiment is made of the following components by weight:

[0045] 40 parts of nano titanium carbide, 15 parts of nano titanium nitride, 9 parts of tungsten carbide, 8 parts of niobium carbide, 7 parts of silicon carbide, 5 parts of cobalt powder, 3 parts of yttrium oxide, 3 parts of boron carbide, and 5 parts of copper powder. The particle size of the tungsten carbide is 2.0-5.0 μm, the particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the copper powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; The particle size of niobium carbide, silicon carbide and boron carbide is 1.5-3.5 μm.

[0046] The nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, boron carbide, and copper powder weighed according to the above-mentioned components are uniformly mixed by dry ball milling, and then reduced in a hydrogen atmosphere. Obt...

Embodiment 3

[0052] The composite cemented carbide of this embodiment is made of the following components by weight:

[0053] 37 parts of nano titanium carbide, 10 parts of nano titanium nitride, 8 parts of tungsten carbide, 7 parts of niobium carbide, 5 parts of silicon carbide, 4 parts of cobalt powder, 2 parts of yttrium oxide, 2 parts of boron carbide, and 3 parts of copper powder. The particle size of the tungsten carbide is 2.0-5.0 μm, the particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the copper powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; The particle size of niobium carbide, silicon carbide and boron carbide is 1.5-3.5 μm.

[0054] The nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, boron carbide, and copper powder weighed according to the above-mentioned components are uniformly mixed by dry ball milling, and then reduced in a hydrogen atmosphere. Obt...

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Abstract

The invention discloses a preparation method of a composite hard alloy used as a cutter material. The composite hard alloy material is prepared from the following components in parts by weight: 35-40 parts of nano titanium carbide, 5-15 parts of nano titanium nitride, 7-9 parts of tungsten carbide, 5-8 parts of niobium carbide, 3-7 parts of silicon carbide, 3-5 parts of cobalt powder, 1-3 parts of yttrium oxide, 1-3 parts of boron carbide and 1-5 parts of copper powder. The method comprises the following steps: preparing materials, preparing carbon-depleted alloy powder, preparing a presintering matrix, carrying out carbonization and carrying out firing step by step. The composite hard alloy prepared by the preparation method has high strength, good toughness and good wear resistance and thermal shock resistance.

Description

technical field [0001] The invention relates to a preparation method of composite cemented carbide as a cutting tool material. Background technique [0002] Cemented carbide is used in processing tools in the manufacturing industry. It has high hardness, good high temperature performance and excellent wear resistance. It is known as the tooth of industry. As an alloy for metal cutting, grades for various materials are derived with the change of composition. [0003] Tungsten carbide-based cemented carbide is widely used as cutting tools, mining tools and wear-resistant parts due to its high strength, high hardness, high wear resistance and high red hardness. From the comprehensive requirements of impact toughness and wear resistance , low-cobalt coarse grain alloy structure can meet this requirement. [0004] Cermets have gone through three generations so far. The first generation was during the "World War II", Germany produced cermets with Ni bonded TiC; The wettability ...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C29/02
Inventor 李克林
Owner CHENGDU BANGPU CUTTING TOOLS CO LTD
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