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A method for extruding recycled deformed aluminum alloy profiles

A technology for deforming aluminum alloys and aluminum alloy profiles is applied in the field of recycled deformed aluminum alloys, which can solve the problems of not involving the extrusion process of recycled deformed aluminum alloys, low production efficiency, long production cycle, etc. High efficiency and good machinability

Active Publication Date: 2020-12-04
DELTA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention realizes large deformation of 2XXX series aluminum alloy through secondary extrusion, many extrusion passes, long production cycle, low production efficiency, and does not involve secondary deformation of aluminum alloy
[0004] It can be seen that the original deformed aluminum alloy generally achieves large deformation through multiple extrusions and heat treatments, so the process is long, the yield is low, and the cost is high.
The existing technical background does not involve the extrusion process of recycled deformed aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The regenerated 1060 aluminum alloy billet prepared from scrap aluminum raw materials is heated to 380°C, and the temperature unevenness of the billet is ≤10°C; the extrusion barrel is heated to 360°C, and the temperature unevenness of the extrusion barrel is ≤10°C; The ingot is placed in the extrusion cylinder with a gap of 2.5mm; uniform extrusion is carried out at 380°C with an extrusion ratio of 500 and a profile extrusion speed of 15m / min to obtain a plate with a thickness of 20mm. After heat treatment, the tensile strength of the recycled 1100 aluminum plate in the H112 state reaches 80MPa, the yield strength reaches 25MPa, and the elongation reaches 22.6%, which meets the corresponding standards in GB / T6892-2015 "General Industrial Aluminum and Aluminum Alloy Extruded Profiles".

Embodiment 2

[0022] The regenerated 1100 aluminum alloy billet prepared from scrap aluminum raw materials is heated to 400°C, and the temperature unevenness of the billet is ≤10°C; the extrusion barrel is heated to 370°C, and the temperature unevenness of the extrusion barrel is ≤10°C; The ingot is placed in the extrusion cylinder with a gap of 2.5mm; uniform extrusion is carried out at 400°C with an extrusion ratio of 400 and a profile extrusion speed of 80m / min to obtain a plate with a thickness of 20mm. After heat treatment, the tensile strength of the recycled 1100 aluminum plate in the H112 state reaches 90MPa, the yield strength reaches 35MPa, and the elongation reaches 24%, which meets the corresponding standards in GB / T6892-2015 "General Industrial Aluminum and Aluminum Alloy Extruded Profiles".

Embodiment 3

[0024] The regenerated 1200 aluminum alloy billet prepared from scrap aluminum raw materials is heated to 400°C, and the temperature unevenness of the billet is ≤10°C; the extrusion barrel is heated to 360°C, and the temperature unevenness of the extrusion barrel is ≤10°C; The ingot is placed in the extrusion cylinder with a gap of 2.5mm; uniform extrusion is carried out at 400°C with an extrusion ratio of 300 and a profile extrusion speed of 40m / min to obtain a plate with a thickness of 20mm. After heat treatment, the tensile strength of the recycled 1200 aluminum plate in the H112 state reaches 85MPa, the yield strength reaches 30MPa, and the elongation reaches 22.2%, which meets the corresponding standards in GB / T6892-2015 "General Industrial Aluminum and Aluminum Alloy Extruded Profiles".

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Abstract

The invention belongs to the technical field of regenerated deformed aluminium alloy, and particularly relates to a regenerated deformed aluminium alloy profile extrusion method. The regenerated deformed aluminium alloy profile extrusion method comprises the steps of regenerated deformed aluminium alloy billet and extrusion cylinder heating, and large-extrusion-ratio extruding. The billet heatingtemperature is lower than the eutectic temperature by 20 to 40 DEG C, the billet temperature inhomogeneity is smaller than or equal to 10 DEG C, the heating temperature of an extrusion cylinder is lower than the billet eutectic temperature by 40 to 50 DEG C, the extrusion cylinder temperature inhomogeneity is smaller than or equal to 10 DEG C, the clearance amount between the billet and the extrusion cylinder is 4.5+ / -0.5 mm, the extrusion ratio is 20 to 500, and the profile constant-speed extrusion speed is 0.5 to 80 m / min. the method is suitable for preparing the regenerated deformed aluminium alloy.

Description

technical field [0001] The invention belongs to the technical field of regenerated deformed aluminum alloys, and in particular relates to a method for extrusion of regenerated deformed aluminum alloy profiles. Background technique [0002] Aluminum and aluminum alloys have excellent mechanical, processing and corrosion resistance properties, and are widely used in various fields such as aviation, aerospace, automobiles, machinery manufacturing, shipbuilding and chemical industries. The leftovers, defective products and waste products that have completed the service life of aluminum and aluminum alloy products are collectively referred to as scrap aluminum. The waste and deformed aluminum alloys include process scraps, scrapped aircraft aluminum alloys, scrapped automobile aluminum alloys, Aluminum cans, waste aluminum alloy doors and windows and other series, because they contain alloy elements such as Mg, Zn, Cu, Fe, Mn, Ti, Zr, Ni, etc., have the properties of intermediate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 张深根姜玉刘波
Owner DELTA ALUMINUM IND
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