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Preparation method of advanced metal matrix composite for brake disk

A composite material and metal-based technology, applied in the field of preparation of advanced metal-based composite materials for brake discs, can solve the problems of cumbersome process steps, heat preservation and low production efficiency, and achieve simple process, low production efficiency and mechanical performance indicators excellent effect

Active Publication Date: 2019-07-05
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention provides a method for preparing advanced metal matrix composite materials for brake discs, to solve the existing preparation methods of advanced metal matrix composite materials for brake discs. To solve the problems of heat preservation and low production efficiency, a method for preparing an advanced metal matrix composite material for a brake disc specifically includes the following steps:

Method used

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  • Preparation method of advanced metal matrix composite for brake disk
  • Preparation method of advanced metal matrix composite for brake disk
  • Preparation method of advanced metal matrix composite for brake disk

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preparation example Construction

[0042] A method for preparing an advanced metal matrix composite material for a brake disc specifically includes the following steps:

[0043] S101: preparing raw materials, TiC powder, graphite powder, Ti powder, Al powder and Si powder are the main raw materials, sorting and storing;

[0044] S102: Pick the prepared raw materials, test their purity, and then mix them. The specific operation steps are as follows:

[0045] S201: pick raw materials, select TiC powder, graphite powder, Ti powder, Al powder and Si powder, and observe and select through a magnifying glass;

[0046] S202: Purity testing. There are two methods for measuring purity: ①Direct determination method, using electrolytic method to determine the purity of pure metal, and using gravimetric method to determine the purity of pure substance, etc. Since the percentage value of the purity is large, there are many requirements for effective digits. Therefore, the determination method must be high-precision and hig...

specific Embodiment 1

[0070] 1. Use TiC powder, graphite powder, Ti powder, Al powder, and Si powder with a purity of not less than 99.9% as the main raw materials, and the particle size of TiC powder, graphite powder, Ti powder, Al powder, and Si powder is required to be ≤10 μm.

[0071] 2. Put Ti powder, Si powder and graphite powder into a high-energy ball mill tank according to Ti-0.2Si-1.2C, fill it with argon gas and carry out mechanical alloying for 48 hours, then add 0.2TiC-0.1Al powder and mix for 5-10 hours.

[0072] 3. Take out the mixed powder and granulate to make spherical particles with a diameter of 0.1mm, and put the prepared powder particles into powder feeder A; granulate the Al powder to make spherical particles with a diameter of 0.1mm, and put the prepared powder Powder particles are loaded into powder feeder B.

[0073] 4. Use 3D printing co-spray deposition equipment, spray deposition under nitrogen protection environment, control nozzle aperture 0.5mm, nozzle moving speed 1...

specific Embodiment 2

[0077] 1. Use TiC powder, graphite powder, Ti powder, Al powder, and Si powder with a purity of not less than 99.9% as the main raw materials, and the particle size of TiC powder, graphite powder, Ti powder, Al powder, and Si powder is required to be ≤10 μm.

[0078] 2. Put Ti powder, Si powder and graphite powder into a high-energy ball mill tank according to Ti-0.3Si-1.5C, fill it with argon gas and carry out mechanical alloying for 48 hours, then add 0.1TiC-0.1Al powder and mix for 5-10 hours.

[0079] 3. Take out the mixed powder and granulate to make spherical particles with a diameter of 0.1mm, and put the prepared powder particles into powder feeder A; granulate the Al powder to make spherical particles with a diameter of 0.1mm, and put the prepared powder Powder particles are loaded into powder feeder B.

[0080] 4. Use 3D printing co-spray deposition equipment, spray deposition in a nitrogen protection environment, control the nozzle aperture to 1.0mm, the nozzle movi...

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Abstract

The invention provides a preparation method of an advanced metal matrix composite for a brake disk and belongs to the field of metal matrix composites and powder metallurgy. The preparation method ofthe advanced metal matrix composite for the brake disk comprises the specific steps of making preparation for a preparation raw material and conducting sorting and storing; conducting picking on the prepared raw material, conducting purity detection and then conducting mixing operation; taking out mixed powder to conduct pelletizing to form powder particles; conducting spray deposition through a 3D printing and spray deposition device; and placing a depositing formed blank into a vacuum heat treatment furnace to be subjected to heat treatment and conducting cooling and storage on the treated blank. The preparation method has the advantages that the process is simple; insulation treatment is not needed, and the production efficiency is high; titanium carbide phases are pre-synthesized through mechanical alloying before heat treatment, part of liquid phases are produced from a material system at 1000 DEG C-1400 DEG C during spray deposition and heat treatment, and the TiC particle layered enhanced aluminum matrix composite reacts completely step by step.

Description

technical field [0001] The invention belongs to the technical field of metal matrix composite materials and powder metallurgy, and in particular relates to a preparation method of advanced metal matrix composite materials for brake discs. Background technique [0002] Metal matrix composites are an important class of composite materials in modern industry. The development of metal matrix composites plays a decisive role in the development of aviation, automobile and other industrial fields. Due to its high specific modulus, high specific strength, good wear resistance, controllable thermal expansion and excellent high temperature comprehensive performance, it has become an important advanced material with rapid development. [0003] At present, brake discs produced with cast iron or cast steel as friction materials are mainly used in automobile braking, or brake discs produced by a combination of cast iron and cast steel, and there are also ceramic particles such as SiC or A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F3/00B22F3/24B33Y10/00B22F10/10B22F10/64
CPCB22F9/04B22F3/24B33Y10/00B22F2009/043B22F2009/041B22F2003/248B22F2998/10B22F10/00B22F10/10Y02P10/25
Inventor 李文虎艾桃桃董洪峰邹祥宇
Owner SHAANXI SCI TECH UNIV
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