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Continuous two-stage annealing method for aluminum-magnesium alloy

An aluminum-magnesium alloy, double-stage annealing technology, applied in the direction of metal/alloy conductors, electrical components, circuits, etc., can solve the problems that the strength and plasticity of aluminum-magnesium alloy wires need to be improved, the product performance cannot be fully exploited, and there are many processes. The production effect is remarkable, the effect is good, and the effect of improving production efficiency

Inactive Publication Date: 2012-09-19
GUANGXI PINGGUO BODAO MG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, there are many processes, the efficiency is low, and the performance of the product cannot be fully exploited. At the same time, the strength and plasticity of the prepared aluminum-magnesium alloy wire need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The weight percentage of the raw material composition of aluminum-magnesium alloy is: Mg 2.7%, Cr 0.09%, Mn 0.03%, Fe 0.18%, Si 0.14%, the balance is Al, the total content of other impurities is not more than 0.3%, and the content of a single impurity component is not More than 0.1%.

[0019] First mix the raw materials evenly according to the proportion, then put them into the gas-fired reverberatory furnace for smelting, and smelt them into alloy liquid at 750~770℃, then use the flat lead casting method to produce Φ7.5~9.5mm cast rods, and then cold draw them Make a Φ5.2mm rod, then carry out intermediate annealing, keep it at 440°C for 1 hour, then raise the temperature to 480°C and keep it for 0.5 hour, and then quickly spray water to cool it out of the furnace. At this time, the tensile strength of the aluminum-magnesium alloy wire is 245MPa. The elongation rate is 17.5%; then the Φ5.2mm rod is cold-drawn into the Φ3.0mm wire, and then annealed in the middle, at 46...

Embodiment 2

[0021] The weight percentage of the raw material composition of aluminum-magnesium alloy is: Mg 3.0%, Cr 0.15%, Mn 0.05%, Fe 0.30%, Si 0.25%, the total content of other impurities is not more than 0.3%, and the content of a single impurity component is not more than 0.1%. The amount is Al.

[0022] First mix the raw materials evenly according to the proportion, then put them into the gas-fired reverberatory furnace to melt into alloy liquid at 760~780℃, then use the flat lead casting method to produce Φ8.5~9.5mm cast rods, and then cold draw them into Φ5.0mm The rods are then intermediate annealed at 450°C for 1 hour, then heated to 480°C for 0.5 hours, and then quickly sprayed with water to cool them out of the furnace. At this time, the tensile strength of the aluminum-magnesium alloy wire is 250MPa, and the elongation is 17%; Then the Φ5.0mm rod is cold-drawn into a Φ2.4mm wire, and then intermediate annealed, at 460°C, heat preservation for 1 hour, then raise the temperatu...

Embodiment 3

[0024] The weight percentage of the raw material composition of aluminum-magnesium alloy is: Mg 3.8%, Cr 0.20%, Mn 0.15%, Fe 0.4%, Si 0.4%, the total content of other impurities is not more than 0.3%, and the content of a single impurity component is not more than 0.1%, and the rest The amount is Al.

[0025] First mix the raw materials evenly according to the proportion, then put them into the gas-fired reverberatory furnace and melt them into alloy liquid at 740~760℃, then use the flat lead casting method to produce Φ7.5~8.5mm cast rods, and then cold draw them into Φ5.4mm The rods are then intermediately annealed at 460°C for 40 minutes, then heated to 500°C for 40 minutes, and then quickly cooled by spraying water out of the furnace. At this time, the tensile strength of the aluminum-magnesium alloy wire is 240MPa, and the elongation is 18%; Then the Φ5.4mm rod is cold drawn into a Φ2.2mm wire, and then intermediate annealed, at 460°C, heat preservation for 1 hour, then ra...

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Abstract

The invention discloses a continuous two-stage annealing method for an aluminum-magnesium alloy. An aluminum-magnesium alloy raw material is subjected to melting, flat leading rod casting, drawing, intermediate annealing and drawing to obtain an aluminum-magnesium alloy wire crude product, wherein the intermediate annealing is continuous two-stage annealing; and the heat of the drawn aluminum-magnesium alloy wire is preserved for 0.5 to 1 hour at 440 to 460 DEG C, the temperature of the drawn aluminum-magnesium alloy wire is raised to 480 to 520 DEG C, the heat of the drawn aluminum-magnesiumalloy wire is preserved for 0.5 to 1 hour, and then the drawn aluminum-magnesium alloy wire is discharged and quickly water-cooled. By the method, the production efficiency of the aluminum-magnesium alloy wire is improved, production cost is saved, the strength of the aluminum-magnesium alloy wire is strengthened, and the plasticity of the aluminum-magnesium alloy wire is improved.

Description

technical field [0001] The invention relates to the technical field of aluminum-magnesium alloy annealing, in particular to a continuous double-stage annealing method for aluminum-magnesium alloys. Background technique [0002] my country is a big producer and exporter of electronic communication materials. For a long time, the terminal products produced by the electronic cable industry use almost pure copper wires. For this reason, a large amount of copper resources are consumed. However, my country's copper resources are in short supply, and the price of copper materials It is also more expensive, resulting in increased production costs and end-use costs. As a new type of shielding functional material that can replace pure copper round wire, aluminum-magnesium alloy wire is a new type of communication material. It is used for the outer conductor braided wire of signal transmission lines such as coaxial cables, and can be widely used in the field of information transmission....

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B1/02
Inventor 许方根尹登峰
Owner GUANGXI PINGGUO BODAO MG CABLE
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