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A method and device for continuously preparing particle-reinforced metal matrix composites

A composite material and particle reinforcement technology, which is applied in the field of continuous preparation of particle-reinforced metal matrix composite materials, can solve problems affecting the performance of composite materials, and achieve the effects of improving matrix performance, reducing layered aggregation, and reducing time

Active Publication Date: 2021-01-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electroslag remelting products have a smooth surface and a dense structure, but they are only suitable for surface composite materials
The mechanical alloying technology is ground by a high-energy ball mill for a long time, and the hard particles are embedded in the metal particles to obtain a composite powder. However, after compaction, molding, and sintering, the composite powder prepared by this method will segregate in the reinforcement phase during the sintering process. , affecting the properties of the composite
[0003] Based on the above methods, it can be seen that none of the above methods can prepare particle-reinforced metal matrix composites with uniform distribution of ceramic particles, continuous production, low cost, and excellent molding quality; The method and equipment of particle reinforced metal matrix composites are imminent

Method used

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  • A method and device for continuously preparing particle-reinforced metal matrix composites
  • A method and device for continuously preparing particle-reinforced metal matrix composites
  • A method and device for continuously preparing particle-reinforced metal matrix composites

Examples

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Embodiment 1

[0032] A continuous preparation of Al 2 o 3 The method of particle reinforced steel-based composite material, the base material is 45 steel, and the ceramic particles are 20-50 mesh Al 2 o 3 Ceramic particles are placed symmetrically around the feeding port, with an inner diameter of 5mm, and the smallest inner diameter of the feeding pipeline is 0.28mm; among them, 45 steel has high strength and hardness, and is conducive to secondary processing; Al 2 o 3 Ceramic particles have high hardness and good economic applicability.

[0033]The preparation method of the composite liner described in this embodiment specifically includes the following steps:

[0034] (1) Smelting 45 steel, pouring molten steel smelted to 1550°C into a holding furnace for heat preservation, and controlling its temperature to 1530-1550°C.

[0035] (2) Pull the molten metal of 45 steel into the draft pipe 11 through the upward continuous casting process (the pulling speed is 340mm / min), and lower the ...

Embodiment 2

[0039] A method for continuously preparing SiC particle-reinforced copper-based composite materials. The base material is red copper, the ceramic particles are 80-100 mesh SiC ceramic particles, and the feeding port is selected to be placed symmetrically in a cross, with an inner diameter of 4mm, and the inner diameter of the feeding pipeline is the smallest. is 0.14mm. When the red copper is kept warm in the holding furnace, charcoal and flake graphite are added to cover the copper liquid surface to isolate oxygen and deoxidize the copper liquid.

[0040] The preparation method of the composite liner described in this embodiment specifically includes the following steps:

[0041] (1) Smelting red copper, pouring molten copper smelted to 1150°C into a holding furnace for heat preservation, and controlling its temperature to 1130-1150°C.

[0042] (2) Through the up-drawing continuous casting process (drawing speed is 300mm / min), the temperature of the copper liquid through the...

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Abstract

The invention relates to a method and device for continuously preparing particle-reinforced metal-based composite materials. The upward continuous casting process is used to reduce the temperature of molten metal to within 30°C above the liquidus line, and stably add ceramic particles into the molten metal through a feeding device. Powder, so that the ceramic particles are evenly distributed in the metal matrix with a certain viscosity, and after rapid solidification and molding, a particle-reinforced metal matrix composite material with uniform ceramic particle distribution and continuous production can be prepared. By adding ceramic particles in the upward continuous casting process, the invention can not only simplify the preparation process of composite materials, but also avoid defects caused by adding ceramic particles into molten metal, and can promote the solidification of molten metal by adding ceramic particles Shaping, refines the grain size of the substrate.

Description

technical field [0001] The invention relates to a method and equipment for continuously preparing particle-reinforced metal matrix composite materials, which are applied in the technical field of continuous casting of composite materials. Background technique [0002] Since the particle reinforced metal matrix composite has the advantages of each component material, it can give full play to the synergistic effect of each component material, making it have the characteristics of high specific strength and high specific modulus, good dimensional stability, and good wear resistance. It is widely used in mining, cement, building materials and other industrial fields. At present, the common methods of particle reinforced metal matrix composites are powder metallurgy, squeeze casting, spray deposition, stirring and mixing technology, electroslag remelting technology, mechanical alloying technology, etc. Among them, the powder metallurgy method is to prepare composite materials by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/14C22C9/10C22C38/02C22C38/04C22C38/06C22C38/42
CPCB22D11/004B22D11/145C22C9/10C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42
Inventor 王卓李祖来张哲轩山泉蒋业华胡振磊
Owner KUNMING UNIV OF SCI & TECH
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