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

Environmentally friendly sintering coating of low-adhesion phase metal ceramic

A cermet, low-bonding technology, applied in the direction of coating, etc., can solve the problems of high cost of ingredients and not being considered as coating, and achieve the effect of improving the mechanical properties of cermets, simple components, and economical price

Active Publication Date: 2018-08-28
CHINA THREE GORGES UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, although the multifunctional coatings for high-temperature sintering of cemented carbide and cermets developed on the market have a wide range of applications and can be used for many types of cemented carbides and cermets, they have many types of ingredients and contain harmful to the environment. The polyoxypropylene, polyoxyethylene glyceryl ether and urotropine and the higher cost hydroxyethyl cellulose / hydroxypropyl methyl cellulose are not considered green and environmentally friendly coatings

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
  • Environmentally friendly sintering coating of low-adhesion phase metal ceramic
  • Environmentally friendly sintering coating of low-adhesion phase metal ceramic
  • Environmentally friendly sintering coating of low-adhesion phase metal ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of sintered coating of environment-friendly low binder phase cermet, its preparation process is as follows,

[0024] ① Taking materials according to mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 20g, polyethylene glycol (PEG-4000) 2.5g, Tween-80 6.5g, deionized water 71g;

[0025] ② Taking materials according to mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 22g, polyethylene glycol (PEG-4000) 2.5g, Tween-80 6.5g, deionized water 69g;

[0026] 3. Taking materials by mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 24g, polyethylene glycol (PEG-4000) 2.5g, Tween-80 6.5g, deionized water 67g;

[0027] 4. Taking materials by mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 26g, polyethylene glycol (PEG-4000) 2.5g, Tween-80 6.5g, deionized water 65g;

[0028] 5. Taking materials by mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%...

Embodiment 2

[0032] A kind of sintered paint of environment-friendly low binder phase cermet, the composition (mass ratio) of its sintered cermet is shown in the following table,

[0033] The mass ratio of the components of the cermet

[0034]

[0035] ①Take the above-mentioned paints (A, B, C, D, E, F), and brush them evenly on six different burning boats with a fine brush, and wait for them to dry, then take a piece of folded graphite paper and place them Take 21 samples of the above-mentioned Ni-Co-24 cermets on the unpainted burning boat (denoted as G), and place each group of 3 samples on six different burning boats with paint. And covered with graphite paper on the burning boat, vacuum sintering is carried out in the sintering furnace, the liquidus temperature of the sintering is 1490 ℃, the sintering time is 1h, and the vacuum degree is controlled at 10 0 -10 1 Between Pa, the surface quality of the sample after sintering is as follows figure 1 As shown, the performance of the...

Embodiment 3

[0044] Prepare sintered coatings with different dispersants for sintering, and the preparation method is as follows:

[0045] ① Taking materials according to mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 25g, sodium silicate 2.5g, Tween-80 6.5g, deionized water 69g;

[0046] ② Taking materials according to mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 25g, sodium hexametaphosphate 2.5g, Tween-80 6.5g, deionized water 69g;

[0047] ③ Taking materials by mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 25g, sodium pyrophosphate 2.5g, Tween-806.5g, deionized water 69g;

[0048] 4. Taking materials by mass ratio, high-purity natural flake graphite (fixed carbon content ≥ 90%) 25g, sodium humate 2.5g, Tween-806.5g, deionized water 69g;

[0049] Place in four ball milling jars, use a glass rod to stir the graphite adhering to the wall of the ball milling jar to a suspended state, then weigh 500 g...

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

No PUM Login to View More

Abstract

The invention relates to an environmentally friendly sintering coating of low-adhesion phase metal ceramic, which comprises solid powder, dispersing agent, coating auxiliary agent and solvent. The preparation method comprises the following steps of: after taking a material, adding sintered carbide ball with a ball-to-powder mass ratio of 5-10:1, uniformly mixing through a planetary ball mill or aninclined ball mill, wherein the ball milling time is 3 to 6 hours and the speed is 200 to 220r / min. The coating is suitable for metal ceramics with adhesion phase under 20%. The coating is evenly brushed on a graphite boat or a sintering plate and ventilated and dried at room temperature. The coating can uniformly adhere to the surface of the metal ceramics. During the sintering process of the metal ceramic, the phenomenon of sticking the boat can be effectively prevented, and the sintering quality of the metal ceramic surface is guaranteed. The phenomenon that the metal ceramic performance is reduced due to the carburizing or decarbonization in the sintering process can be suppressed. The coating does not have the volatilization of harmful substances during the using process, and can berepeatedly used, thus not only reducing the cost of using a disposable coating, but also having no pollution to the environment, which embodies the concept of green and environmental protection.

Description

technical field [0001] The invention belongs to the field of sintering of low-binding phase cermets, and in particular relates to an environment-friendly sintering coating for low-binding phase cermets. Background technique [0002] Cermets are a type of structural material with ceramics as the hard phase and metal as the binder phase. It combines the characteristics of hard ceramic phase and tough metal phase with different mechanical properties, and has high wear resistance, red hardness, excellent high temperature oxidation resistance and extremely low friction coefficient. In recent years, cermets, especially Ti(C,N)-based cermets, have made a major breakthrough in cutting tool materials, and have become the tool materials with the most potential to replace WC-Co. Superior wear resistance and high temperature stability not only increase the service life of the tool, but also achieve the effect of improving the quality of the cutting surface of the tool. Cermets with lo...

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): C09D1/00C09D7/61C09D7/65C09D7/63B22F3/10
CPCB22F3/1003B22F3/1035C09D1/00
Inventor 丰平但成龚林王志虎王淳田安琪
Owner CHINA THREE GORGES UNIV
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