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Method for preparing Al-base composite material

A technology of aluminum-based composite materials and mixtures, which is applied in the field of preparation of aluminum-based composite materials and can solve problems such as unsatisfactory mechanical properties.

Inactive Publication Date: 2009-12-30
江苏蒙特欧机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the defects of the unsatisfactory mechanical properties of the products obtained by die-casting the aluminum-based composite materials obtained by the existing preparation method, and provide a preparation of aluminum-based composite materials that make the products obtained by die-casting have good mechanical properties method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At 720 °C, add 80 grams of industrial pure aluminum to the resistance furnace to melt the aluminum, then, under the protection of argon, and at a stirring speed of 600 rpm, mix 50 grams of B 2 o 3 , 16 grams of TiO 2 The powder is evenly sprayed into the molten aluminum, fully mixed with the molten aluminum, and then the above mixture is heated to a molten state (1200°C). After reacting for 25 minutes, add 2 grams of scouring agent NaCl, and stir to remove by-products, and then put the above The molten mixture is evacuated, and the mixture is placed in a vacuum environment with an absolute pressure of 0.14 MPa. Nitrogen is passed into the reactant. The amount of nitrogen used makes the reaction system of the molten mixture and nitrogen to normal pressure. Reaction 15 Obtain the aluminum matrix composite material precursor after 1 minute, this aluminum matrix composite material precursor continues to be maintained in molten state (1300 ℃), and in the aluminum matrix com...

Embodiment 2

[0035] This example illustrates the aluminum matrix composite materials, products and their preparation methods provided by the present invention.

[0036] At 720°C, add 80 grams of industrial pure aluminum to the resistance furnace to melt the aluminum, then, under the protection of helium, and at a stirring speed of 600 rpm, mix 40 grams of B 2 o 3 , 24 grams of TiO 2 The powder is evenly sprayed into the molten aluminum, fully mixed with the molten aluminum, and then the above mixture is heated to a molten state (1350°C). After reacting for 10 minutes, add 4 grams of scouring agent NaCl, and continuously pass through the mixed melt. into nitrogen, and stirring to remove by-products, then the molten mixture is evacuated, and the mixture is placed in a vacuum environment with an absolute pressure of 0.15 MPa pressure, nitrogen is passed into the reactant, and the amount of said nitrogen makes the molten mixture The system reacted with nitrogen is brought to normal pressure,...

Embodiment 3

[0039] This example illustrates the aluminum matrix composite materials, products and their preparation methods provided by the present invention.

[0040] At 720 ° C, add 80 grams of industrial pure aluminum to the resistance furnace to melt the aluminum, and then, under the protection of argon, and at a stirring speed of 680 rpm, 32 grams of B 2 o 3 , 32 grams of TiO 2 The powder is evenly sprayed into the molten aluminum, fully mixed with the molten aluminum, and then the above mixture is heated to a molten state (1500°C). After reacting for 25 minutes, add 3 grams of scouring agent NaCl, and stir to remove by-products, and then melt the The mixture is evacuated, and the mixture is placed in a vacuum environment with an absolute pressure of 0.14 MPa. Nitrogen is passed into the reactant. The amount of nitrogen used is to make the reaction system of the molten mixture and nitrogen to normal pressure and react for 5 minutes. After obtaining the aluminum-based composite mate...

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PUM

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Abstract

The invention relates to a preparation method of a compound aluminiferous material, wherein, the method includes the steps that melted state aluminum is evenly mixed with B2O3 and TiO2, the temperature is increased to ensure that the mixture enters into the melted state to perform reaction, the obtained melted mixture is vacuated, nitrogen is filled into the melted mixture to perform reaction, under the vacuum condition, the precursor of the compound aluminiferous material is achieved, to ensure that the precursor of the compound aluminiferous material maintains in the melted state, and the melted state precursor of the compound aluminiferous material is mixed with magnesium and copper. Parameters such as tensile strength, yield strength, breaking extension rate and elastic modulus of the product, which are obtained from the compound aluminiferous material through compression casting and molding in the preparation method provided by the invention are high, to ensure that the compound aluminiferous material achieved by the method adopted by the invention is in particular suitable for the manufacture of vehicle braking discs.

Description

technical field [0001] The invention relates to a preparation method of a composite material, more specifically, to a preparation method of an aluminum-based composite material. Background technique [0002] Aluminum matrix composites have excellent physical and mechanical properties such as high specific strength, high specific modulus, high temperature resistance, wear resistance, small thermal expansion coefficient, and stable size. They are used in aerospace, military defense, automobiles, electronic instruments and other industries Has a wide range of applications. [0003] With the shortage of energy and the continuous increase of vehicle speed, the development of vehicle lightweight technology for the purpose of weight reduction and energy saving has attracted much attention. Compared with traditional steel materials, aluminum-based composite materials are very suitable for making brake systems and brake discs of automobiles and high-speed trains, so that the weight ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03
Inventor 肖美群
Owner 江苏蒙特欧机械制造有限公司