Supercharge Your Innovation With Domain-Expert AI Agents!

Hard alloy and preparation method thereof

A cemented carbide, cubic phase technology, applied in the field of alloys, can solve the problems of limited wide application, can not take into account the toughness, wear resistance and hardness at the same time, to improve the strength and wear resistance, good toughness, save the cost of mold manufacturing and the effect of machining costs

Active Publication Date: 2017-01-04
GUANGDONG UNIV OF TECH
View PDF7 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of cemented carbide cannot take into account toughness, wear resistance and hardness at the same time, which limits its wide application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hard alloy and preparation method thereof
  • Hard alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The present invention provides a kind of preparation method of cemented carbide in the above technical scheme, comprising:

[0041] 3D direct printing of Ti-containing cermet particles by laser selective melting to form a hard alloy surface layer;

[0042] On the surface of the cemented carbide surface, WC-Co cemented carbide particles are 3D directly printed by laser selective melting to form a cemented carbide core;

[0043]On the surface of the hard alloy core, the Ti-containing cermet particles are subjected to laser selective melting and 3D direct printing to form a hard alloy surface layer to obtain a hard alloy.

[0044] In the present invention, the composition of the Ti-containing cermet particles is consistent with the composition of the Ti-containing cermet in the above technical solution, and will not be repeated here. In the present invention, the particle size of the Ti-containing cermet particles is preferably 20-150 μm, more preferably 30-120 μm, and mo...

Embodiment 1

[0077] 1) Prepare WC-12Co spherical cemented carbide particles according to the following method:

[0078] Mix Co, WC and paraffin to obtain a mixture; wet mill the mixture at a ball milling speed of 200r / min for 48 hours, dry at 60°C, sieve, and granulate; dewaxing at 1200°C for 2 hours, and then sintering under vacuum at 1200°C to obtain spherical powder particles of WC-12Co. The WC-12Co spherical cemented carbide particles prepared in Example 1 of the present invention have a particle size of 50 μm and a composition of 88 wt.% WC and 12 wt.% Co, wherein the particle size of WC is 100 nm.

[0079] 2) Prepare TiC-20Ni cermet particles according to the following method:

[0080] TiC and Ni and 2wt.% paraffin were mixed to obtain a mixture; the mixture was wet-milled at a ball milling speed of 200r / min for 48 hours, dried at 60°C, sieved, and granulated; Dewaxing is performed at 400° C. for 2 hours in hydrogen, and then sintered at 1200° C. under vacuum to obtain TiC-20Ni sph...

Embodiment 2

[0087] 1) Prepare WC-12Co spherical cemented carbide particles according to the following method:

[0088] Mix Co, WC and paraffin to obtain a mixture; wet mill the mixture at a ball milling speed of 200r / min for 48 hours, dry at 60°C, sieve, and granulate; dewaxing at 1200°C for 2 hours, and then sintering under vacuum at 1200°C to obtain spherical cemented carbide particles of WC-12Co. The WC-12Co spherical cemented carbide particles prepared in Example 2 of the present invention have a particle size of 50 μm and a composition of 88 wt.% WC and 12 wt.% Co, wherein the particle size of WC is 100 nm.

[0089] 2) Prepare WC-30Ti-10Co cermet particles according to the following method:

[0090] WC, Ti, Co and 2wt.% paraffin were mixed to obtain a mixture; the mixture was wet milled at a ball milling speed of 200r / min for 48 hours, dried at 60°C, sieved, and granulated; the obtained balls were The particles were dewaxed in hydrogen at 400°C for 2 hours, and then sintered at 120...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Grain sizeaaaaaaaaaa
Tile thicknessaaaaaaaaaa
Fracture toughnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a hard alloy which comprises a cubic phase-containing hard alloy surface layer and an inner region of a WC-Co hard alloy, wherein the cubic phase is a cubic phase made of Ti-containing metal ceramic. The invention provides a preparation method of the hard alloy in the technical scheme, wherein the preparation method comprises the following steps: Ti-containing metal ceramic particles are subjected to laser selective melting and 3D printing directly to form the hard alloy surface layer; WC-Co hard alloy particles are subjected to laser selective melting and 3D printing directly on the surface of the hard alloy surface layer to form a hard alloy core part; the Ti-containing metal ceramic particles are subjected to laser selective melting and 3D printing directly on the surface of the hard alloy core part to form the hard alloy surface layer, thereby obtaining the hard alloy. The hard alloy provided by the invention simultaneously has good toughness, abrasion resistance and hardness.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a cemented carbide and a preparation method thereof. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500°C , It still has high hardness at 1000 °C. As a special tool material, cemented carbide has been widely used in the manufacture of cutting tools, knives, drilling tools and wear-resistant parts, widely used in military industry, aerospace, machining, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields. [0003] The Chinese patent application number 201510...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22F3/105C22C29/08B33Y10/00B33Y70/00B33Y80/00
CPCC22C29/067C22C29/08B33Y10/00B33Y70/00B33Y80/00B22F10/00B22F10/36B22F10/28B22F10/34B22F10/366B22F10/32Y02P10/25
Inventor 刘金洋陈健邓欣
Owner GUANGDONG UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com