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A kind of production technology of environment-friendly high-toughness duralumin alloy profile

A technology of aluminum alloy profiles and hard aluminum alloys, which is applied in the production process of environmentally friendly and high-toughness hard aluminum alloy profiles, to achieve excellent toughness and tensile strength, production process and cycle shortening

Active Publication Date: 2017-04-12
浙江米皇新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a new environment-friendly and high-toughness hard aluminum alloy production process, which is fully optimized from raw materials to process parameters, and can produce excellent high-toughness hard aluminum alloys with high strength and elongation of more than 12% with low energy consumption profiles, such a process has not been reported

Method used

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  • A kind of production technology of environment-friendly high-toughness duralumin alloy profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A production method of an environmentally friendly high-toughness hard aluminum alloy profile:

[0028] (1) Ingredients and smelting:

[0029] Ingredients according to mass percentage: Cu 5.3%, Fe 3.2%, Mn 0.2%, Mg 2.5%, Zn 1.5%, Si 0.5%, Ni 0.1%, Ti 0.2%, the rest is Al, at a temperature of 780℃~ Melting at 800°C for 8 hours to obtain molten aluminum alloy;

[0030] (2) Horizontal continuous casting:

[0031] The obtained aluminum alloy solution is subjected to horizontal continuous casting at a temperature of 725° C., and cleaned;

[0032] (3) Continuous extrusion:

[0033] The extrusion speed is 5r / min, and the rounded corner of the mold entrance is r=0.4mm to obtain a semi-finished aluminum alloy profile;

[0034] (4) Three-stage aging heat treatment:

[0035] Carry out three-stage aging heat treatment to the semi-finished aluminum alloy profile obtained in step (3), specifically:

[0036] Level 1: The temperature is 300°C, the time is 2 hours, and then the al...

Embodiment 2

[0040] A production method of an environmentally friendly high-toughness hard aluminum alloy profile:

[0041] (1) Ingredients and smelting:

[0042] Ingredients according to mass percentage: Cu 5%, Fe 2%, Mn 0.1%, Mg 1.5%, Zn 1.5%, Si 1%, Ni 0.1%, Ti 0.2%, the rest is Al, at a temperature of 780 ° C ~ Melting at 800°C for 6 hours to obtain molten aluminum alloy;

[0043] (2) Horizontal continuous casting:

[0044] The obtained aluminum alloy solution is subjected to horizontal continuous casting at a temperature of 780° C., and cleaned;

[0045] (3) Continuous extrusion:

[0046] The extrusion speed is 3r / min, and the rounded corner of the mold entrance is r=0.7mm to obtain semi-finished aluminum alloy profiles;

[0047] (4) Three-stage aging heat treatment:

[0048] Carry out three-stage aging heat treatment to the semi-finished aluminum alloy profile obtained in step (3), specifically:

[0049] Level 1: The temperature is 200°C, the time is 5 hours, and then the alumi...

Embodiment 3

[0053] A production method of an environmentally friendly high-toughness hard aluminum alloy profile:

[0054] (1) Ingredients and smelting:

[0055] Ingredients according to mass percentage: Cu 5.5%, Fe 4.5%, Mn 0.1%, Mg 0.5%, Zn 0.8%, Si 0.7%, Ni 0.1%, Ti 0.2%, the rest is Al, at a temperature of 780℃~ Melting at 800°C for 7 hours to obtain molten aluminum alloy;

[0056] (2) Horizontal continuous casting:

[0057] The obtained aluminum alloy solution is subjected to horizontal continuous casting at a temperature of 740° C., and cleaned;

[0058] (3) Continuous extrusion:

[0059] The extrusion speed is 4r / min, and the rounded corner of the mold entrance is r=0.6mm to obtain semi-finished aluminum alloy profiles;

[0060] (4) Three-stage aging heat treatment:

[0061] Carry out three-stage aging heat treatment to the semi-finished aluminum alloy profile obtained in step (3), specifically:

[0062] Level 1: The temperature is 250°C, the time is 4 hours, and then the alu...

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Abstract

The invention discloses an environment-friendly high-toughness hard aluminum alloy profile production process. The production process comprises burdening and smelting; the burdening is performed for the following component in percentage by mass: 5-5.5% of Cu, 2-4.5% of Fe, 0.1-0.3% of Mn, 0.5-3% of Mg, 1.1-1.5% of Zn, 0.1-1% of Si, 0.1% of Ni, 0.2% of Ti, and the balance of Al; the smelting is performed for 6-8 h under high temperature to obtain aluminum alloy molten liquid; and then, the horizontal continuous casting, the continuous extrusion and the three-stage ageing heat treatment are performed. The process shortens the alloy production process and period without needing the homogenization and the preheating treatment, and totally accords with the production requirements of energy conservation and greenness of a short-flow process; and a prepared aluminum alloy profile has excellent toughness and tensile strength, and can satisfy the gradually increasing high-end demands.

Description

technical field [0001] The invention belongs to the technical field of metal material manufacturing, and in particular relates to an environment-friendly and high-toughness duralumin alloy profile production process. Background technique [0002] my country is already the world's largest producer, exporter and consumer of aluminum extrusions. At present, my country's aluminum extrusion industry has entered a new stage of scale and technological upgrading, and is in an important period of change and transformation. Now the aluminum alloy industry has been developing in the direction of producing environmentally friendly, low energy consumption, and excellent alloy properties. [0003] Continuous extrusion is an important process for the production of aluminum alloy profiles. Continuous extrusion rods do not require preheating, but require good toughness, shape and formability for the billet. The aluminum alloys formed by continuous extrusion mainly include: 1050, 1060, 1100...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/18C22F1/057
Inventor 陆新江吴金海李焰钟泉
Owner 浙江米皇新材股份有限公司
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