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A preparation method of advanced metal matrix composite material for brake disc

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: 2022-03-29
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A preparation method of advanced metal matrix composite material for brake disc
  • A preparation method of advanced metal matrix composite material for brake disc
  • A preparation method of advanced metal matrix composite material for brake disc

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preparation example Construction

[0040] A method for preparing an advanced metal matrix composite material for a brake disc specifically includes the following steps:

[0041] S101: preparing raw materials, TiC powder, graphite powder, Ti powder, Al powder and Si powder are used as raw materials, sorted and stored;

[0042] S102: Pick the prepared raw materials, the specific operation steps are as follows:

[0043] S201: pick raw materials, select TiC powder, graphite powder, Ti powder, Al powder and Si powder, and observe and select through a magnifying glass;

[0044] S202: Purity detection, by performing purity detection on TiC powder, graphite powder, Ti powder, Al powder and Si powder;

[0045] S103: Take out the mixed powder and granulate, and make powder granules, the specific operation steps are as follows:

[0046] S301: Extract a part of the raw materials and put them into the high-energy ball mill tank according to the ratio within a reasonable range;

[0047] S302: filling argon into the high-e...

specific Embodiment 1

[0066] 1. Use TiC powder, graphite powder, Ti powder, Al powder, and Si powder with a purity of not less than 99.9% as raw materials, and the particle size of TiC powder, graphite powder, Ti powder, Al powder, and Si powder is required to be ≤10 μm.

[0067] 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.

[0068] 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.

[0069] 4. Use 3D printing co-spray deposition equipment, spray deposition under nitrogen protection environment, control nozzle aperture 0.5mm, nozzle moving speed 1mm / s, air...

specific Embodiment 2

[0073] 1. Use TiC powder, graphite powder, Ti powder, Al powder, and Si powder with a purity of not less than 99.9% as raw materials, and the particle size of TiC powder, graphite powder, Ti powder, Al powder, and Si powder is required to be ≤10 μm.

[0074] 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.

[0075] 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.

[0076] 4. Use 3D printing co-spray deposition equipment, spray deposition in a nitrogen protection environment, control the nozzle aperture to 1.0mm, the nozzle moving speed ...

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Abstract

The invention provides a method for preparing an advanced metal matrix composite material for brake discs, which belongs to the field of metal matrix composite materials and powder metallurgy. The specific steps of the preparation method for advanced metal matrix composite materials for brake discs are preparing raw materials, sorting , store, pick the prepared raw materials, take out the mixed powder to granulate, and make powder particles, use 3D printing co-spray deposition equipment for spray deposition, put the deposited green body into a vacuum heat treatment furnace for heat treatment and put The treated body is cooled and stored. The process of the invention is simple, no heat preservation treatment is required, and the production efficiency is low, because the titanium carbide phase is pre-synthesized by mechanical alloying before heat treatment, and in the process of spray deposition and heat treatment, at 1000 ° C to 1400 ° C, the material system produces part of the liquid phase , so that the TiC granular layered reinforced aluminum matrix composite has gradually reacted completely.

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, or brake discs produced by a combination of cast iron and cast steel are used in automobile braking, and there are also ceramic particles such as SiC or A12O3 as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04B22F10/10B22F10/64B22F3/24B22F1/12B33Y10/00B33Y70/10B33Y40/20
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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