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A method of producing particle reinforced aluminum-base compound material continuously by using extrusion-upsetting and device thereof

A particle-reinforced aluminum and composite material technology, which is applied in metal extrusion control equipment, metal containers to be extruded, metal extrusion, etc., can solve the problems of unrealized extrusion and upsetting continuous composite material preparation technology, and reach the applicable level wide, saving energy, reducing production costs

Inactive Publication Date: 2011-04-20
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no preparation technology for extruded continuous composite materials

Method used

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  • A method of producing particle reinforced aluminum-base compound material continuously by using extrusion-upsetting and device thereof
  • A method of producing particle reinforced aluminum-base compound material continuously by using extrusion-upsetting and device thereof
  • A method of producing particle reinforced aluminum-base compound material continuously by using extrusion-upsetting and device thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0055] (10) Preparation of extruded and upsetting continuous composite materials.

[0056] The blank is produced by mechanically mixing the reinforcing powder material and aluminum alloy powder, including the following steps:

[0057] a. Put the aluminum alloy powder with a particle size of 40-150 μm and 5% to 25% of the reinforcement phase with a particle size of 25-150 μm into a mixer and mechanically mix until completely uniform;

[0058] b. Do not add any solvent when dry mixing, add 2vol% absolute alcohol and 1wt% polyethylene glycol when wet mixing;

[0059] c. Extrude the mixed powder into a billet with the same nominal diameter as the extrusion barrel.

[0060] The method of the present invention further comprises the following steps:

[0061] (11) Pack the extruded composite material prefabricated compact into the upper extrusion barrel (1), and extrude the billet with the upper extrusion rod;

[0062] (12) After 80% of the billet is squeezed into the lower extrusi...

Embodiment 1

[0068] Example 1 10% SiC p / Al composite material

[0069] SiC calcined at 800°C p Fully mix with Al powder for 20 minutes; then, put the powder into the billet extrusion barrel, put it on the platform of the extruder, apply 4MPa pressure, and keep the pressure for 10 minutes (pressed into a billet with a specification of D A mm (extrusion barrel diameter) × 55mm) to make a billet; put the billet into extrusion barrel A for extrusion. Following the process discussed above, 10% SiC p The tensile strength of the / Al composite material is more than 120MPa, and the elongation reaches 26%. Compared with pure aluminum, the tensile strength is nearly doubled, but the elongation does not decrease significantly. The reinforcement is well bonded to the matrix, such as figure 2 shown.

Embodiment 2

[0070] Example 2 5vol.% Graphite-10vol.% Al 2 o 3 / Al composite material

[0071] Surfactant polyethylene glycol PEG2000

[0072] Wet mixing medium: absolute ethanol

[0073] For mixing, first put pure aluminum powder, then add 1wt% absolute ethanol, then add graphite powder, stir with a glass rod while adding, then add 0.5wt% polyethylene glycol PEG2000, and finally add Al 2 o 3 powder, stirred with a glass rod for 5 min. Put the stirred wet powder into the prepared clean PVC bottle, put it on the self-made mixer for mixing, and the speed of the mixer is 65r / min. The mixing time is 4h~12h respectively. Surfactant and absolute ethanol act as grinding medium and grinding aid at the same time, which not only prevents particles from re-aggregating and growing, but also promotes the diffusion of crushing cracks, accelerates grinding, and plays the role of grinding fine particles. At the same time, the addition of surfactant makes the agglomerated particles loose and dispers...

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Abstract

A method of producing particle reinforced aluminum-base compound material continuously by using extrusion-upsetting and device thereof, characterized in that the device comprises a machine frame that is composed of a extruding press base(7), upper platen (12) and abrasive tools connection conductor bar (8) connecting the base and the upper platen, a extrusion barrel provided between base and upper platen, and a lower pressing stem (9) provided inside the central axis hole of the base with its upper end extends to inner cavity of the extrusion barrel, and a upper pressing stem (11) provided inside the central axis hole of the upper platen with its lower end downwardly extends to the inner cavity of the extrusion barrel, wherein the extrusion barrel consists of upper and lower extrusion barrel(1, 5) in coaxial line which locked together, and a annular groove is processed on the inner wall of lock part of upper and lower extrusion barrel which is used for embedding left and right semi-circular cavity die (3, 10). The left and right semi-circular cavity die (3, 10) embedded in the annular groove forms compose demountable extrusion inner cavity.

Description

technical field [0001] The invention relates to particle-reinforced aluminum (alloy) composite materials, in particular to a method and device for continuously preparing particle-reinforced aluminum-based composite materials by extrusion. technical background [0002] In view of the shortcomings of traditional materials, it is more and more important to study the transformation of traditional materials and the development and application of new materials from the relationship between internal organization, structure and material properties of materials. Improving the performance of materials mostly focuses on the refinement of grains, and the physical and mechanical properties of alloy materials are often significantly improved after obtaining ultra-fine structures. When the grains are refined to the submicron or nanoscale, the material exhibits some extraordinary properties. There are many methods to refine the structure of materials, such as metallurgical methods (such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/21B21C27/00B21C25/02B21C29/02B21C29/04B21C23/02B21C31/00C22C1/05C22F1/04
Inventor 郭学锋陈思杰
Owner HENAN POLYTECHNIC UNIV
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