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A Metal Mesh Reinforcing Phase and Its Application in Squeeze-Infiltration Casting

A technology of reinforcing phase and metal, which is applied in the field of metal composite material preparation, can solve the problems that metal composite materials cannot be applied, and metal liquid is difficult to infiltrate, etc., and achieve high temperature wear resistance, high compressive strength, and uniform fiber structure. Effect

Active Publication Date: 2020-02-28
广东鸿特精密技术肇庆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose is to prepare metal microporous materials by coiling metal wires, not to prepare metal alloy composite materials. Due to the plastic processing after sintering to reduce the voids in the coiled green body materials, it is difficult for the metal liquid to infiltrate into the micropores. , cannot be applied to the preparation of metal composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This example is the application of stainless steel mesh reinforced phase in extrusion infiltration casting to prepare zinc alloy composite material reinforced by stainless steel mesh.

[0030] The metal mesh reinforcement phase of the present invention is a reinforcement phase formed by rolling up metal mesh cloth woven with metal wires, and the steps for preparing the stainless steel metal mesh reinforcement phase are as follows:

[0031] Step 1: Design the following parameters according to the requirements of zinc alloy composite materials reinforced by stainless steel metal mesh. The melted metal is ZA8 zinc alloy melt, and 1Cr18Ni9 stainless steel wire is used. 80μm;

[0032] Target setting The volume percentage of the prepared stainless steel metal mesh reinforcement phase is 60%, and the volume percentage of the liquid metal zinc alloy solidified as the matrix phase is 40%. According to the calculation formula (rπ / 2d)×100% of the volume percentage of the metal me...

Embodiment 2

[0042] This example is the application of the stainless steel mesh reinforced phase in extrusion infiltration casting to prepare an aluminum alloy composite material reinforced by stainless steel mesh.

[0043] The preparation of the metal mesh reinforcement phase and its application steps in extrusion infiltration casting are basically the same as in Example 1. The difference from Example 1 is that the diameter of the stainless steel wire in this example is 80 μm, and its radius is 40 μm. Prepare the stainless steel mesh reinforced aluminum alloy material with the same volume percentage of the reinforced phase of the stainless steel mesh and the aluminum alloy matrix material, that is, the volume percentage of the reinforced phase and the matrix material is both 50%. Calculate according to the volume percentage of the metal mesh reinforcement phase (rπ / 2d)×100%, r is 40 μm, the volume percentage of the stainless steel metal mesh reinforcement phase is about 50%, and the distan...

Embodiment 3

[0046] In this example, aluminum bronze wires with wear-resisting and friction-reducing effects are used to weave metal mesh cloth, which is the application of aluminum bronze mesh reinforcement phase in extrusion infiltration casting to prepare zinc alloy composite materials reinforced by aluminum bronze mesh cloth. The preparation of metal mesh reinforcing phase and its application steps in extrusion infiltration casting are basically the same as in Example 1, except that the aluminum bronze wire in this example has a wire diameter of 100 μm and a radius of 50 μm , the volume percentage of the aluminum bronze metal mesh reinforcement phase is about 60%, and the liquid metal zinc alloy is solidified into an aluminum bronze mesh cloth reinforced zinc alloy material with a matrix phase volume percentage of about 40%. According to the volume percentage calculation of the metal mesh reinforcement phase (rπ / 2d) × 100%, r is 50 μm, the volume percentage of the aluminum bronze metal ...

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PUM

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Abstract

The invention provides a metal screen cloth reinforced phase and an application thereof in extrusion, infiltration and casting. The metal screen cloth reinforced phase is formed by curling metal screen cloth woven by metal wire rods, wherein the porosity is controlled by means of changes of radiuses of metal wires and the distances from the metal wires to the center of the wire sections, and the density of the metal screen cloth reinforced phase is controlled by means of the porosity; by designing the diameter of the metal wires and the weaving distances, the proportion of the metal screen cloth reinforced phase and a matrix material is controllable. By applying the metal screen cloth reinforced phase to extrusion, infiltration and casting successively, the volume fraction of the reinforced phase is easy to control and the microscopic structure is repeated; the volume percentage of the metal screen cloth reinforced phase reaches 19.6-78.54%, so that a metal composite material with highproportion metal screen cloth reinforced phase is prepared. By means of experimental detection, compared with an alloy of a substrate material of a same name plate, the comprehensive property of themetal composite material is improved greatly. The application field is large, the application range is wide, and great economic benefit can be created.

Description

technical field [0001] The invention relates to the preparation technology of metal composite materials, in particular to a metal mesh reinforcing phase and its application in extrusion-impregnation casting. Background technique [0002] At present, the preparation methods of metal matrix composites can be divided into: stirred casting method, in-situ reaction method, squeeze casting method and spray forming method. Among them, the stirred casting method is characterized by simple process, large-volume composite materials can be produced, less equipment investment, low production cost, suitable for mass production, but the volume of the added reinforcement phase is limited, generally not more than 20%, and the stirring During the process, it is easy to inhale and form pores, and it is also easy to cause agglomeration. The squeeze casting method is solidified under high pressure, and improves the wettability between the melt and the reinforcement, can eliminate defects such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D23/04B22D18/02
CPCB22D18/02B22D23/04
Inventor 张金荣陆文兴
Owner 广东鸿特精密技术肇庆有限公司