Manufacture method of electroconductive aluminum alloy section

A technology of aluminum alloy profiles and manufacturing methods, applied in the direction of metal/alloy conductors, etc., to achieve the effect of improving strength and increasing strength

Active Publication Date: 2012-01-25
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the aging heat treatment temperature in the manufacturing process of 6-series aluminum alloy is between 175-210°C, and the holding time is 6-8h; the conductivity of the profile products obtained by this aging heat treatment method is between 48-54%IACS (International Annealing Copper Standard, international annealed copper standard), there is still room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The composition of the ingot is controlled as (weight percent W%): Si: 0.5%; Mg: 0.7%; Fe: 0.1%; Cu: 0.004%; Mn: 0.012%; Cr: 0.001%; ​​Zn: 0.02%; Ti: 0.034%; the individual content of other elements does not exceed 0.05%; the remaining content is Al. Among them, Mg%:Si% is 1.4.

[0021] Melting and casting process: Add the raw materials to the melting furnace according to the proportion, heat and melt in the temperature range of 745~750°C; fully stir for more than 30 minutes after liquefaction, and remove the slag on the surface; cast the molten aluminum at a speed of 75mm / min , and quickly cooled to room temperature by spraying water; then heated to 545 ° C for 18 hours to achieve homogeneous annealing of the ingot.

[0022] Profile extrusion molding process: the ingot is heated to 495°C before extrusion molding; the extrusion speed (profile exit speed) is about 10.0m / min;

[0023] Profile quenching process: the water inlet temperature for profile quenching is contro...

Embodiment 2

[0030] The composition of the ingot is controlled (wt% by weight): Si: 0.44%; Mg: 0.61%; Fe: 0.12%; Cu: 0.007%; Mn: 0.016%; Cr: 0.002%; Zn: 0.01%; Ti: 0.036%; the individual content of other elements does not exceed 0.05%; the remaining content is Al. Among them, Mg%:Si% is 1.386.

[0031] Melting and casting process: Add the raw materials to the melting furnace according to the proportion, heat and melt in the temperature range of 750~755°C; fully stir for more than 30 minutes after liquefaction, and remove the slag on the surface; cast the molten aluminum at a speed of 65mm / min , and quickly cooled to room temperature by spraying water; then heated to 550 ° C for 24 hours to achieve homogeneous annealing of the ingot.

[0032] Profile extrusion molding process: the ingot is heated to 495°C before extrusion molding; the extrusion speed (profile exit speed) is about 10.0m / min;

[0033] Profile quenching process: the water inlet temperature for profile quenching is controlled...

Embodiment 3

[0038] The composition of the ingot is controlled as (weight percent W%): Si: 0.52%; Mg: 0.59%; Fe: 0.11%; Cu: 0.006%; Mn: 0.013%; Cr: 0.003%; Zn: 0.03%; Ti: 0.030%; the individual content of other elements does not exceed 0.05%; the remaining content is Al. Among them, Mg%:Si% is 1.135.

[0039] Melting and casting process: Add the raw materials to the melting furnace according to the proportion, heat and melt in the temperature range of 760°C; fully stir for more than 30 minutes after liquefaction, and remove the slag on the surface; cast the molten aluminum at a speed of 80mm / min, and Rapid cooling to room temperature by spraying water; then heating to 565°C for 12 hours to achieve uniform annealing of the ingot.

[0040] Profile extrusion molding process: the ingot is heated to 490°C before extrusion molding; the extrusion speed (profile exit speed) is about 10.0m / min;

[0041] Profile quenching process: the water temperature for profile quenching is controlled at 528~53...

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Abstract

The invention discloses a manufacture method of an electroconductive aluminum alloy section. The manufacture method comprises the following steps: cast ingot component control, fusion casting, extruding, quenching and aging heat treatment; in the step of quenching, the water entry temperature of the section is 520-530 DEG C, the cooling rate is 180-350 DEG C / min; and in the step of aging heat treatment, the heat-insulation temperature of the section is 160-180 DEG C and the heat-insulation time is 10-16 hours. The aluminum alloy section manufactured by the manufacture method disclosed by the invention has tensile strength of more than 245 MPa, electrical conductivity of more than 55%IACS (International Annealed Copper Standard), and hardness of more than 80HB.

Description

[0001] technical field [0002] The invention relates to the technical field of manufacturing aluminum alloy profiles, in particular to a method for manufacturing conductive aluminum alloy profiles. Background technique [0003] 6-series aluminum alloys are widely used in rail transit rail materials, computer CPU heat sinks, and conductive parts due to their medium strength, good corrosion resistance, polishability, and anodic oxidation colorability. At the same time, due to the good electrical conductivity of aluminum alloy, it is widely used in conductive rail profiles, wire materials, conductive electrodes, conductive bars, etc. of rail trains. The impurities in the aluminum alloy material and the macroscopic and microstructural defects caused by the manufacturing process will affect the electrical conductivity of the aluminum alloy. [0004] 6063 and 6101 aluminum alloys are commonly used conductive aluminum alloy materials. The 6-series aluminum alloy is a heat-treata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22F1/047H01B1/02
Inventor 何洪
Owner SNTO TECH GRP
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