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Preparation method of aluminum alloy with excellent comprehensive property

A comprehensive performance and aluminum alloy technology, which is applied in the field of aluminum alloy preparation, can solve the problems of difficult balance between mechanical properties and tribological properties, and achieve the effects of improving mechanical properties, simple process methods, and simple processing

Inactive Publication Date: 2013-04-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the object of the present invention is to propose a method for preparing an aluminum alloy with high comprehensive performance, which can not only significantly improve the mechanical properties of the aluminum alloy, but also significantly improve the tribological properties of the aluminum alloy, and solve the problem of existing process mechanics. Difficult to balance performance and tribological performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The as-cast aluminum alloy blank with the brand name ZAlSi7Mg is processed into a block blank with a cross-sectional area of ​​20×20 mm and a length of 300 mm by wire cutting method, and the surface treatment of the blank is carried out to make the surface smooth and flat. Clean the surface of the billet with acetone, place the billet on a clean stainless steel tray, preheat it at 120°C for 15 minutes, and then apply graphite lubricant evenly on the surface of the billet by brushing, and the billet after coating Dry at 100°C for 10 minutes. If there are defects such as falling coating, scratches, and peeling, re-coat or wash off and re-coat. Use acetone to clean the surface and cavity of the mold with an extrusion angle of 90 degrees, preheat it at a temperature of 150°C for 40 minutes, and then evenly apply graphite lubricant. Put the aluminum alloy coated with graphite lubricant in the mould, assemble the mould, and extrude on the hydraulic universal testing machine. ...

Embodiment 2

[0017] The rolled aluminum alloy blank with the brand name of 1070A is processed into a cylindrical blank with a circular cross-section, a cross-sectional radius of 10mm, and a length of 300mm by wire cutting method. The surface of the blank is treated to make the surface smooth and flat. Clean the surface of the billet with acetone, place the billet on a clean stainless steel tray, preheat it at 120°C for 15 minutes, and then apply graphite lubricant evenly on the surface of the billet by brushing, and the billet after coating Dry at 100°C for 10 minutes. If there are defects such as falling coating, scratches, and peeling, re-coat or wash off and re-coat. Use acetone to clean the surface and cavity of the mold with an extrusion angle of 90 degrees, preheat it at a temperature of 150°C for 40 minutes, and then evenly apply graphite lubricant. Put the aluminum alloy coated with graphite lubricant in the mould, assemble the mould, and extrude on the hydraulic universal testing ...

Embodiment 3

[0020] The forged aluminum alloy blank with the brand name of 2B50 is processed into a cylindrical blank with a circular cross-section, a cross-sectional radius of 15mm, and a length of 200mm by wire cutting. The surface of the blank is treated to make the surface smooth and flat. Clean the surface of the billet with acetone, place the billet on a clean stainless steel tray, preheat it at 120°C for 15 minutes, and then apply graphite lubricant evenly on the surface of the billet by brushing, and the billet after coating Dry at 100°C for 10 minutes. If there are defects such as falling coating, scratches, and peeling, re-coat or wash off and re-coat. Use acetone to clean the surface and cavity of the mold with an extrusion angle of 90 degrees, preheat it at a temperature of 150°C for 40 minutes, and then evenly apply graphite lubricant. Put the aluminum alloy coated with graphite lubricant in the mould, assemble the mould, and extrude on the hydraulic universal testing machine....

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Abstract

The invention discloses a preparation method of an aluminum alloy with excellent comprehensive properties. The preparation method comprises the following steps of cutting the aluminum alloy in the cast state, rolled state or forged state into a blank, wherein the cross section of the blank can be cut into a circular shape or a square shape according to practical demands; carrying out surface machining treatment on the blank; coating a lubricant on the surface of the blank; carrying out equal channel corner extrusion treatment by using an equal channel corner extruding die which is accordant to the cross section of the blank in shape; after each extrusion treatment, carrying out the surface machining treatment again on the surface of the blank; after more than four times of the equal channel corner extrusion treatment, cleaning the surface of the blank; carrying out surface laser fusing treatment, wherein working parameters in the surface treatment can be changed through the laser fusing treatment according to practical application demands; and finally obtaining the aluminum alloy block material of which a substrate has high mechanical property and the surface has high friction property. By utilizing the preparation method, the mechanical property and the friction property of the aluminum alloy can be remarkably improved, the application range of the alloy is widened, and the requirements of practical production on the high-performance aluminum alloy are met better.

Description

technical field [0001] The invention relates to a method for preparing an aluminum alloy with excellent comprehensive performance. A high-performance aluminum alloy block is prepared by a method combining equal-channel angular extrusion and laser melting technology, and the plasticity, strength, hardness and other mechanical properties of the aluminum alloy are improved. performance and its tribological properties, thereby improving the practical engineering application value of the alloy. The invention belongs to the technical field of metal material forming and processing. Background technique [0002] Pure aluminum has low density and low melting point. Aluminum has a face-centered cubic structure, so it has high plasticity and is easy to process. It can be made into various profiles and plates and has good corrosion resistance; but pure aluminum has low strength, so it is not suitable as structural material. Through long-term production practice and scientific experime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04C21D1/09
Inventor 高雷雷刘玉辉张健戴扬邢娟娟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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