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Extrusion deformation method of aluminium alloy profile

An aluminum alloy profile, extrusion deformation technology, applied in metal extrusion, metal extrusion control equipment, metal processing equipment, etc., can solve problems such as easy cracking, uneven plastic deformation, and insignificant grain refinement effect

Inactive Publication Date: 2011-05-18
张文丛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing aluminum alloy extrusion, such as significant uneven plastic deformation, insignificant grain refinement effect, and easy cracking during extrusion, and to provide a simple process, low cost, production Aluminum alloy profile extrusion deformation method with high efficiency, low energy consumption, and greatly improved strength and toughness of aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Select 1035 aluminum alloy, the size of the aluminum alloy billet is Φ52×60mm, heat the aluminum alloy billet to 150°C and keep it warm for 0.5h, preheat the extrusion die to 250°C, at this time the temperature of the extrusion die is higher than that of the aluminum alloy billet The surface temperature is 100°C. The inner surface of the extrusion die is lubricated with oil-based graphite. Put the aluminum alloy billet into the mold for extrusion, the extrusion ratio is 8, and the movement speed of the extrusion punch is 30mm·S -1 , The extrusion force is 500MPa. Extrude to obtain a rod Φ18mm.

[0012] In this embodiment, the grain size of the 1035 aluminum alloy after extrusion is below 10 μm. Extruded material properties are: room temperature tensile strength σ b : 135MPa, elongation δ: 48%; tensile strength σ b The highest can reach 152MPa, and the elongation can reach 49%.

Embodiment 2

[0013] Example 2: Select 3A21 aluminum alloy, the size of the aluminum alloy billet is Φ52×60mm, heat the aluminum alloy billet to 200°C and keep it warm for 0.5h, preheat the extrusion die to 350°C, at this time the temperature of the extrusion die is higher than that of the aluminum alloy billet The surface temperature is 150°C. The inner surface of the extrusion die is lubricated with oil-based graphite. The aluminum alloy billet is put into the mold for extrusion, the extrusion ratio is 16, and the movement speed of the extrusion punch is 30mm·S -1 , The extrusion force is 700Mpa. Extrude to obtain a rod Φ13mm.

[0014] In this embodiment, the grain size of the 3A21 aluminum alloy after extrusion is between 5 μm and 10 μm. Extruded material properties are: room temperature tensile strength σ b : 130MPa, elongation δ: 40%; tensile strength σ b The highest can reach 142MPa, and the elongation can reach 45%.

Embodiment 3

[0015] Example 3: Select the 6000 series alloy 6063 aluminum alloy, the size of the aluminum alloy billet is Φ52×60mm, heat the aluminum alloy billet to 100°C and keep it warm for 1h, preheat the extrusion die to 150°C, at this time the temperature of the extrusion die is higher than that of the aluminum alloy The surface temperature of the alloy billet is 50°C; the inner surface of the extrusion die is lubricated with oil-based graphite; the aluminum alloy billet is put into the die for extrusion, the extrusion ratio is 25, and the movement speed of the extrusion punch is 20mm·S -1 , the extrusion force is 900MPa, and the extruded rod is Φ10.4mm.

[0016] The grain size of the 6063 aluminum alloy after extrusion is between 5 μm and 10 μm. Extruded material properties are: room temperature tensile strength σ b : 220MPa, elongation δ: 20%, tensile strength σ b The highest can reach 240MPa, and the elongation can reach 24%.

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PUM

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Abstract

The invention relates to an extrusion deformation method of an aluminium alloy profile, comprising the following steps of: heating an aluminium alloy blank to be 100-200 DEG C, keeping the temperature, preheating an extrusion mold to ensure that the temperature of the extrusion mold is higher than the surface temperature of the aluminium alloy blank by 50-150 DEG C, then placing the aluminium alloy blank into the extrusion mold, and extruding under the conditions that the extrusion ratio is 8-42, and the speed of an extrusion mold punch head is 20-30mm.s<-1>. The extrusion deformation method realizes larger improvement of comprehensive performances of the extruded aluminium alloy such as the tenacity and the like, has the advantages of simple process, low cost, low energy consumption, high production efficiency and great improvement of tenacity of the aluminium alloy, and can be used for producing profiles such as bar materials, wire materials, plate materials and pipe materials and the like made of aluminium alloy.

Description

technical field [0001] The invention relates to a method for plastic processing of metal materials, in particular to a method for extrusion deformation of aluminum alloy profiles. Background technique [0002] We know that aluminum alloy has the advantages of low density, high specific strength, good electrical and thermal conductivity, easy forming and low price. It has been widely used in aerospace, transportation, light industry and building materials, and is the most widely used light alloy. , The most used alloy. Since the application of electrolytic aluminum technology, the world's aluminum industry has developed rapidly, and aluminum alloy has become one of the two most commonly used industrial alloys. At the same time, aluminum alloy is a relatively "young" metal material, and it did not start large-scale industrial application until the beginning of the 20th century. At present, aluminum is used in a large amount and in a wide range, second only to steel, and has ...

Claims

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Application Information

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IPC IPC(8): B21C23/02B21C31/00
Inventor 张文丛于洋
Owner 张文丛
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