Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-sticking coating for sintering of hard alloy as well as preparation method and application thereof

A technology of anti-sticking coatings and hard alloys, applied in the direction of fireproof coatings, coatings, etc., can solve the problems of easy contact with graphite plates, high processing costs, alloy carburization, etc., to achieve stability, good stability, increase The effect of high temperature performance

Inactive Publication Date: 2021-03-26
株洲润昌新材料股份有限公司
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Its disadvantages are: high processing cost, 4000-6000 yuan per square meter, general cemented carbide manufacturers cannot afford the high cost of thermal spraying
But its shortcoming is: (1) cellulose, PEG, Tween are all organic matter, and the organic matter of coating layer all volatilizes after high-temperature sintering, and the hardness of coating layer, strength loses completely, still unsatisfactory; (2) large alloy Products and high-cobalt alloy products are easy to contact with the graphite plate, and the alloy is carburized; (3) The energy spectrum analysis is carried out on the surface of the sintered cemented carbide. The alloy contains 20% to 30% aluminum, and its source is solid isolation. Due to the addition of alumina in the layer; this is absolutely unacceptable for sintering high-quality CNC blades and rods

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
  • Anti-sticking coating for sintering of hard alloy as well as preparation method and application thereof
  • Anti-sticking coating for sintering of hard alloy as well as preparation method and application thereof
  • Anti-sticking coating for sintering of hard alloy as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A cemented carbide sintering anti-stick coating according to an embodiment of the present invention, the anti-stick coating is formed by mixing solid spacer powder and liquid binder. Among them, the solid isolation powder is composed of the following materials:

[0042]

[0043] The liquid adhesive consists of the following materials:

[0044]

[0045] The preparation method of this cemented carbide sintering anti-stick coating is as follows:

[0046] Mix the materials in the above solid isolation powder in proportion to obtain a solid isolation powder, put the solid isolation powder into the ball mill barrel; put cemented carbide grinding balls into the ball mill barrel, the mass ratio of the ball to material is 3:1;

[0047] First, add water-soluble modified phenolic resin liquid, hydroxypropyl methylcellulose powder, Tween-80 liquid, flake PEG, granular urotropine and polydimethylsiloxane liquid into the container in proportion; Then put the diluent ethanol ...

Embodiment 2

[0050] A cemented carbide sintered anti-sticking coating according to an embodiment of the present invention, the anti-sticking coating includes a solid spacer powder and a liquid binder, wherein the solid spacer powder is composed of the following materials:

[0051]

[0052] The liquid adhesive consists of the following materials:

[0053]

[0054] The preparation method of this cemented carbide sintering anti-stick coating is as follows:

[0055] Mix the materials in the above solid isolation powder in proportion to obtain a solid isolation powder, put the solid isolation powder into the ball mill barrel; put cemented carbide grinding balls into the ball mill barrel, the mass ratio of the ball to material is 3:1;

[0056] First, add water-soluble modified phenolic resin liquid, hydroxypropyl methylcellulose powder, Tween-80 liquid, flake PEG, granular urotropine and polydimethylsiloxane liquid into the container in proportion; Then put the diluent ethanol and deioni...

Embodiment 3

[0059] A cemented carbide sintered anti-sticking coating according to an embodiment of the present invention, the anti-sticking coating includes a solid spacer powder and a liquid binder, wherein the solid spacer powder is composed of the following materials:

[0060]

[0061] The liquid adhesive consists of the following materials:

[0062]

[0063] The preparation method of this cemented carbide sintering anti-stick coating is as follows:

[0064] Mix the materials in the above solid isolation powder in proportion to obtain a solid isolation powder, put the solid isolation powder into the ball mill barrel; put cemented carbide grinding balls into the ball mill barrel, the mass ratio of the ball to material is 3:1;

[0065] First, add water-soluble modified phenolic resin liquid, hydroxypropyl methylcellulose powder, Tween 80 liquid, flake PEG, granular urotropine and polydimethylsiloxane liquid into the container in proportion; then Put the diluent ethanol and deioni...

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
melting pointaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides an anti-sticking coating for sintering of hard alloy as well as a preparation method and application thereof. The anti-sticking coating is formed by mixing solid isolation powder and a liquid adhesive. The solid isolation powder is prepared from, by weight, 22-40 parts of zirconium oxide, 5-8 parts of cerium oxide, 3-6 parts of magnesium oxide, 13-26 parts of crystalline flake graphite and 14-27 parts of fine carbon black. The liquid adhesive comprises the following components in parts by weight: 80-120 parts of water-soluble modified phenolic resin, 1.0-3.0 parts of a thickening agent, 3-6 parts of a dispersing agent, 4-8 parts of an active agent, 1-5 parts of a curing agent, 0.5-1.0 part of a defoaming agent and 80-120 parts of a diluent. A mass ratio of the solidisolation powder to the liquid adhesive is 1: (2.0-3.0). After the coating is brushed, bonding strength and hardness are high, and the coating is not prone to falling off and chipping in alloy productplacing, transporting and charging processes; and after sintering, the coating still maintains high hardness and bonding strength, and alloy carburization is avoided.

Description

technical field [0001] The invention relates to the technical field of cermet and cemented carbide manufacturing, in particular to a cemented carbide sintering anti-sticking coating and its preparation method and application. Background technique [0002] Sintering is one of the important processes in the production of cemented carbide. The anti-stick coating on the graphite boat or graphite plate is an important factor affecting the quality of cemented carbide products. At present, there are mainly the following kinds of commonly used cemented carbide sintered anti-sticking coatings in China. [0003] 1: Plasma spraying zirconia and rare earth stabilizer coating [0004] When sintering CNC blades, ultra-fine-grain cemented carbide extruded rods and alloy materials with multi-component components, it is necessary to maintain a stable atmosphere in the vacuum-pressure furnace during sintering to reduce the impact of the coating layer on the quality of cemented carbide produc...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09D161/14C09D7/61
CPCC08K2003/2213C08K2003/222C08K2003/2244C08K2201/014C09D5/18C09D161/14C09D7/61C08K13/02C08K3/22C08K3/04
Inventor 陈国生
Owner 株洲润昌新材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com