Aluminum copper alloy material and casting heat-treatment technique

An aluminum-copper alloy and process technology, which is applied in the field of aluminum alloy materials to achieve the effects of good heat treatment, low wear and good machinability

Inactive Publication Date: 2009-10-07
ANHUI KINGPOWER EQUIP & MOLD MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide people with an aluminum-copper alloy with high strength, excellent plasticity, good fluidity and good heat treatment, machinability and polishability for the defects of existing aluminum alloy materials. Material casting and heat treatment process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Melting first: put 75kg of pure aluminum containing ≥99% aluminum and 8kg of aluminum-titanium alloy containing 5-10% titanium into a graphite crucible resistance furnace at room temperature for melting, and add copper when the temperature rises to 720°C 12 kg of aluminum-copper alloy with a volume of 40-60% continues to be smelted; when the melting temperature in the graphite crucible resistance furnace is raised to 720-740°C, add a refining agent (HGJB-2) with a total amount of 2-2.5% of the solution in the furnace, and use a clock Press the scouring agent into the molten aluminum under the cover, and continuously stir along the lower part of the molten aluminum to make the molten aluminum bubble moderately. Stir for 6-10 minutes until the bubbles are fully released, and the scum floats on the surface at the same time. Use a metal scoop to scoop out the scum That is to complete the degassing and slag removal; add 3-5% of the total amount of the furnace solution and add...

Embodiment 2

[0022] Melting first: put 88kg of pure aluminum containing ≥99% aluminum and 4kg of aluminum-titanium alloy containing 5-10% titanium into a graphite crucible resistance furnace at room temperature for melting, and add copper when the temperature rises to 720°C 6 kg of aluminum-copper alloy with an amount of 40-60% is continuously smelted; when the smelting temperature in the graphite crucible resistance furnace is raised to 720-740°C, add a refining agent (HGJB-2) with a total amount of 2-2.5% of the solution in the furnace, and use a clock Press the scouring agent into the molten aluminum under the cover, and continuously stir along the lower part of the molten aluminum to make the molten aluminum bubble moderately. Stir for 6-10 minutes until the bubbles are fully released, and the scum floats on the surface at the same time. Use a metal scoop to scoop out the scum That is to complete the degassing and slag removal; add 3-5% of the total amount of the furnace solution and ad...

Embodiment 3

[0024] Melting first: put 82kg of pure aluminum containing ≥99% aluminum and 5kg of aluminum-titanium alloy containing 5-10% titanium into a graphite crucible resistance furnace at room temperature for melting, and add copper when the temperature rises to 720°C 9 kg of aluminum-copper alloy with an amount of 40-60% is continuously smelted; when the smelting temperature in the graphite crucible resistance furnace is raised to 720-740°C, add a refining agent (HGJB-2) with a total amount of 2-2.5% of the solution in the furnace, and use a clock Press the scouring agent into the molten aluminum under the cover, and continuously stir along the lower part of the molten aluminum to make the molten aluminum bubble moderately. Stir for 6-10 minutes until the bubbles are fully released, and the scum floats on the surface at the same time. Use a metal scoop to scoop out the scum That is to complete the degassing and slag removal; add 3-5% of the total amount of the furnace solution and ad...

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Abstract

The invention relates to an Al-Cu alloy material and the casting and heat treatment process thereof. The material is produced by the pure aluminum, the Al-Cu alloy, the Al-Mg alloy and the Al-Ti alloy being taken as raw materials and made a casting and heat treatment. The weight proportion of the compositions is: pure aluminum of 75 to 88, Al-Cu alloy of 6-12, Al-Mg alloy of 2-7, and Al-Ti alloy of 4-8. The Al-Cu alloy material of the invention has higher strength, excellent plasticity, good fluidness as well as good heat treatment, cutting process and polishing performance, and is not easy to appear sand holes, air holes and shrinkage porosity after casting.

Description

technical field [0001] The invention belongs to an aluminum alloy material, in particular to a casting and heat treatment process of an aluminum-copper alloy material. technical background [0002] At present, the main body of vacuum forming molds mostly uses ZL401 alloy material. ZL401 belongs to Al-Zn alloy. Due to the high content of zinc in the alloy, it has high density, poor corrosion resistance, and poor castability. , the fluidity is poor, so the material will have blisters, pores, and shrinkage defects during casting and use, and these defects can only be found after processing, which has a great negative impact on processing costs and manufacturing cycles. We combine ZL401 The characteristics of the material and its composition are analyzed. By changing the material composition, the aluminum-copper alloy is developed, and the structure of the material is changed through heat treatment to eliminate defects, increase the mechanical properties of the material, and imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/12C22C1/03C22C1/06B22D21/04C22F1/057
Inventor 胡德云蔡伟东
Owner ANHUI KINGPOWER EQUIP & MOLD MFR
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