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

Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material

A technology of hard alloy and high chromium alloy, which is applied in the direction of metal processing equipment, manufacturing tools, casting molding equipment, etc., can solve the problems of inability to prepare high wear-resistant composite materials, limit the scope of use, cracking of composite materials, etc., and achieve thermal impact The effect of small area, good bonding and small interface residual stress

Inactive Publication Date: 2013-02-27
XI AN JIAOTONG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although some cemented carbide / iron-based composite products have been applied in industry and have achieved certain economic benefits, their scope of use is still limited due to the following problems
(1) Due to the great difference in the linear (expansion) coefficients of cemented carbide and iron-based alloys, a large residual stress will be generated at the interface. During the subsequent heat treatment and use, the workpiece is easy to crack, especially with the hardness As the volume fraction of the alloy increases, the residual stress also increases accordingly, resulting in frequent cracking of the composite material during preparation, heat treatment and use, and it is impossible to prepare a high wear-resistant composite material with a high volume fraction (greater than 30%) of the reinforcing phase

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
  • Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material
  • Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material
  • Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The following takes the preparation of ZGM110 type (output: 5-8t / h, grinding disc diameter: 1100mm, speed: 50r / min, power: 110KW) coal mill lining as an example, and in conjunction with the drawings, the present invention is further explained. The output of ZGM110 type :5~8t / h, grinding disc diameter: 1100mm, speed: 50r / min, power: 110KW.

[0025] A preparation method of hard alloy / high chromium alloy-based wear-resistant composite material includes the following steps:

[0026] Step 1. Cut the cemented carbide scrap into a composite reinforcement of the required shape and size, select the YG8 cemented carbide, and process it into a cemented carbide reinforcement with a size of Φ5mm×8mm through wire cutting, except After the oil is sandblasted, and finally cleaned,

[0027] Step 2: Weld an iron nail to one end of the cemented carbide reinforcement treated in step 1, using a vacuum brazing process, and the brazing material is a high-melting foil-like brazing material BCu81Ni w...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a hard alloy / high-chromium alloy-based wear-resistant composite material, which comprises the following steps: firstly manufacturing a hard alloy / enhancement body, welding an iron nail at one end of the hard alloy enhancement body, then plating a metal buffer layer on the surface of the hard alloy enhancement body welded with the iron nail, further manufacturing a wearable element model, further inserting the well prepared hard alloy into the wearable element model on the premise of enabling the iron nail to face towards outside, adopting the expendable pattern casting process to cast high-chromium alloy, taking out a cast after casting molding, cutting off the iron nail, using a diamond grinding wheel to polish the working surface to be smooth, and then performing heat treatment on a workpiece. The composite material is uniform in distribution of enhancement phase, large in controllable range of volume fraction, small in residual stress of an interface, small in heat-affected zone and good in combination, hard alloy of the composite material is positioned in the surface layer of the working surface of a wearable element, the thickness is 10-15mm, and the composite material can be used for manufacturing normal-temperature or high-temperature wear-resistant wearable elements in the fields of mines, building, metallurgy, electric power and the like.

Description

Technical field [0001] The invention relates to the technical field of wear-resistant composite material manufacturing, in particular to a method for preparing a hard alloy / high chromium alloy-based wear-resistant composite material. Background technique [0002] Cemented carbide has a series of excellent properties such as high hardness, wear resistance, heat resistance and corrosion resistance, and is widely used in metal processing, mining and other fields. However, cemented carbide has high manufacturing costs and high brittleness, so it is not suitable for impact Wearable parts with greater force. In addition, with the rapid development of my country's industry, the application range and dosage of cemented carbide are increasing year by year. Various scrapped cemented carbide tools such as drills, milling cutters, reamers, turning tools, etc. Correspondingly increase; due to the serious problems of high energy consumption, complex equipment and environmental pollution in the...

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 Patents(China)
IPC IPC(8): B22D19/16B22C9/04
Inventor 鲍崇高侯书增邢建东高义民
Owner XI AN JIAOTONG 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