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

Method and device for preparing metal-based composite material by electric current direct heating dynamic sinter hot pressing

A technology for composite material and preparation device, which is applied in the field of current direct heating dynamic sintering and hot pressing preparation of metal matrix composite materials, can solve problems such as technical and theoretical problems yet to be studied, and achieves shortening powder sintering time, improving production efficiency and saving energy. energy effect

Inactive Publication Date: 2006-02-08
NORTHEASTERN UNIV
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course there are still many technological and theoretical issues to be studied

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
  • Method and device for preparing metal-based composite material by electric current direct heating dynamic sinter hot pressing
  • Method and device for preparing metal-based composite material by electric current direct heating dynamic sinter hot pressing
  • Method and device for preparing metal-based composite material by electric current direct heating dynamic sinter hot pressing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The present invention adopts electric current direct heating dynamic sintering hot pressing furnace, as figure 1 As shown, the current direct heating dynamic sintering hot-press furnace is composed of five parts, and the connection sequence is as follows: circuit control system, induction voltage regulator, dry-type transformer, hot-press furnace and computer data acquisition system.

[0049] Such as figure 2 As shown, the output terminal of the circuit control system is connected to the input terminal of the induction voltage regulator 1 , and the circuit control system provides a periodically changing working current, which is input to the induction voltage regulator 1 . The function of the induction voltage regulator 1 is to complete the first voltage regulation, and the input voltage can be changed by controlling the induction voltage regulator 1 . It can adjust the voltage from 220V to 100-500V. The input end of the dry-type transformer 16 is connected to the ou...

Embodiment 2

[0053] The preparation of the iron-based composite material reinforced with 10% SiC particles by volume percentage (with the addition of 0.5-1% zinc stearate by mass fraction) is carried out by pressing and forming by general powder metallurgy sintering method, in the protective atmosphere of decomposing ammonia Sintering, the sintering temperature is 1110-1150°C, heat preservation for 1-1.5 hours, its performance is shown in Table 2:

[0054] SiC volume number

[0055] Using the current direct heating dynamic sintering and hot pressing process of the present invention, the mechanical properties of the iron-based composite material containing 10% SiC by volume percentage prepared by direct heating and sintering for different times (interval 100s) under the output voltage of the induction transformer 360V are shown in Table 3:

[0056] Sintering time / (S)

[0057] It can be seen from Table 2 and Table 3 that the mechanical properties (tensile strength and hard...

Embodiment 3

[0059] For the current direct heating sintering process, if the mold is not treated, the current will pass through the mold and the sintered material at the same time. This process can be defined as an ordinary current dynamic hot pressing sintering process; and the current direct heating dynamic sintering hot pressing process of the present invention Through the processing of the mold, the current passes completely through the material to be sintered. The mechanical properties of the volume percentage 10% SiC iron-based composite material sintered by these two processes are shown in Table 4:

[0060]

[0061] It can be seen that the density and mechanical properties of the samples prepared by direct current heating dynamic sintering process are higher than those of ordinary current heating hot pressing sintering process. Therefore, the improvement of the mold set by this process is absolutely necessary.

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a metal base composite material electric hot-pressed preparation and its device, which adopts electric hot-pressed furnace that comprises circuit control system, induction regulator, air-immersed transformer, dynamic caking furnace and computer data acquisition system. Thermal sintering mould comprises housing of normal carbon steel, mould and insulating ceramic layer, and mould is made of iron or high-purity carbite and its inner wall is embed insulating ceramic layer. The process proceeds under the conditions of pressure of 50-60MPa, input voltage of 5-20V and clinkering time of 5-20 minutes. The invention can produce products by high sintering in short time making use of low voltage and heavy current, and can produce product with good strength for extension and hardness.

Description

technical field [0001] The invention relates to the technical field of manufacturing metal-matrix composite materials, in particular to a method and device for preparing metal-matrix composite materials by electric current direct heating, dynamic sintering and hot pressing. Background technique [0002] Metal-matrix composites (MMC) is a kind of composite material, which has attracted people's attention because of its excellent properties such as high specific strength, high specific modulus, and high wear resistance. The manufacturing process methods of MMC are usually divided into three categories, namely, diffusion method, deposition method and casting method as shown in Table 1. [0003] method enhancer advantage shortcoming expand scattered Law powder metallurgy pellets, short fibers Easy handling, low reactivity Low productivity, high cost, poor shape size limited diffusion bo...

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): B22F3/12
Inventor 王刚宗亚平杨玉芳
Owner NORTHEASTERN 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