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A kind of composite cemented carbide material coated with tungsten carbide and its preparation method

A technology of cemented carbide and tungsten carbide, which is applied in the field of composite cemented carbide materials and its preparation, can solve the problems of limited application, low strength and toughness, and achieve the purpose of inhibiting grain growth, improving hardness and toughness, and purifying grain boundaries Effect

Active Publication Date: 2016-08-31
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 Ti (C, N)-based cermets greatly limits its application as a cutting tool material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The base material of the composite cemented carbide coated with tungsten carbide in this embodiment is made from the following components in parts by weight:

[0039] 35 parts of nano-titanium carbide, 5 parts of nano-titanium nitride, 5 parts of niobium carbide, 3-7 parts of silicon carbide, 3 parts of cobalt powder, 1 part of yttrium oxide, 1 part of aluminum carbide, and 1 part of titanium powder. The particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the titanium powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the particle size of the niobium carbide, silicon carbide and aluminum carbide is 1.5 -3.5 μm.

[0040] Nano-titanium carbide, nano-titanium nitride, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, aluminum carbide, and titanium powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosphere to obtain carbon-deficient alloy powder. ...

Embodiment 2

[0046] The composite cemented carbide material coated with tungsten carbide in this embodiment is made from the following components in parts by weight:

[0047] 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 aluminum carbide, and 5 parts of titanium powder. The particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the titanium powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the particle size of the niobium carbide, silicon carbide and aluminum carbide is 1.5 -3.5 μm.

[0048] Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, aluminum carbide, titanium powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosphere. A carbo...

Embodiment 3

[0054] The composite cemented carbide material coated with tungsten carbide in this embodiment is made from the following components in parts by weight:

[0055] 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 aluminum carbide, and 3 parts of titanium powder. The particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the titanium powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the particle size of the niobium carbide, silicon carbide and aluminum carbide is 1.5 -3.5 μm.

[0056] Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, aluminum carbide, titanium powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosphere. A carbo...

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Abstract

The invention discloses a composite hard alloy material coated with tungsten carbide and a preparation method thereof. The alloy material comprises a substrate and a tungsten carbide cladding layer, and the substrate is made of the following components in parts by weight: 35-40 parts of nano-titanium carbide, 5-15 parts of nano-titanium nitride, 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 aluminum carbide, and 1-5 parts of titanium powder. The composite hard alloy material of the invention has high strength, good toughness, wear resistance and good thermal shock performance.

Description

technical field [0001] The invention relates to a composite hard alloy material coated with tungsten carbide and a preparation method thereof. Background technique [0002] Cemented carbide materials are used in processing tools in the manufacturing industry. They have high hardness, good high temperature performance and excellent wear resistance, and are known as industrial teeth. 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 bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/00C22C1/05
CPCC22C1/051C22C29/02
Inventor 李克林
Owner CHENGDU BANGPU CUTTING TOOLS CO LTD
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