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High-performance 6XXX aluminum alloy for outer part of electronic product and machining method thereof

A technology for electronic products and processing methods, which is applied to aluminum alloys, high-performance aluminum alloys for electronic product exterior parts and their processing fields, can solve the problems of inability to balance strength and anodizing effect, and achieves excellent anodizing effect, high strength, The effect of broad market application prospects

Active Publication Date: 2016-01-13
苏州中色研达金属技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But their attempts often fall into the dilemma that the strength and anodizing effect cannot be balanced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Semi-continuous cast rod: 178mm in diameter, and the composition is calculated as mass percentage: Mg: 0.62wt%, Si: 0.65wt%, Cu: 0.005wt%, Mn: 0.005wt%, Cr: 0.006wt%, Fe: 0.12wt% , Zn: 0.01wt%, Ti: 0.02wt%, Zr: 0.001wt%, the balance is Al.

[0037] Homogenizing heat treatment for alloy cast rods: increase to 560°C for 10 hours at a rate of 120°C / h, and then rapidly cool (cooling rate greater than 160°C / h). Extrusion of the material (heating temperature of extruded ingot is 520℃, extruding cylinder temperature is 460℃, die temperature is 495℃, extrusion rod speed is 3mm / s), product size: 7×100mm (extrusion ratio 36), online quenching, straightening (1%) and artificial aging: 175℃ / 8h.

Embodiment 2

[0039] Semi-continuous cast rod: diameter 178mm, aluminum alloy composition in mass percentage: Mg: 0.75wt%, Si: 0.61wt%, Cu: 0.05wt%, Mn: 0.07wt%, Cr: 0.01wt%, Fe: 0.13 wt%, Zn: 0.02 wt%, Ti: 0.02 wt%, Zr 0.005 wt%, and the balance is Al.

[0040] Homogenizing heat treatment for alloy cast rods: raising to 565°C for 12 hours at a rate of 100°C / h, and then rapidly cooling (cooling rate greater than 160°C / h). Extrusion of the material (heating temperature of extruded ingot is 500℃, extruding cylinder temperature is 470℃, die temperature is 500℃, extrusion rod speed is 3.6mm / s), product size: 7×105mm (extrusion Compared with 38), online quenching, straightening (1%) and artificial aging: 175℃ / 8h.

Embodiment 3

[0042] Semi-continuous cast rod: diameter 178mm, aluminum alloy composition in mass percentage: Mg: 0.72wt%, Si: 0.75wt%, Cu: 0.01wt%, Mn: 0.01wt%, Cr: 0.01wt%, Fe: 0.13 wt%, Zn: 0.02wt%, Ti: 0.02wt%, Zr: 0.004%, and the balance is Al.

[0043] Homogenizing heat treatment for alloy cast rods: raising to 560°C for 10 hours at a rate of 130°C / h, and then rapidly cooling (cooling rate greater than 160°C / h). The material is extruded (the heating temperature of the extruded ingot is 515°C, the temperature of the extrusion cylinder is 460°C, the temperature of the die is 490°C, and the extrusion rod speed is 3mm / s), product size: 6×100mm (extrusion ratio 41), online quenching, straightening (1%) and artificial aging: 175℃ / 8h.

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Abstract

The invention relates to a high-performance 6XXX aluminum alloy for an outer part of an electronic product and a machining method thereof. The alloy comprises the following components: 0.5-1.2 wt% of Si, 0.5-1.2 wt% of Mg, Cu not more than 0.1 wt%, Mn not more than 0.10 wt%, Cr not more than 0.10 wt%, Zr not more than 0.10 wt%, Ti not more than 0.10 wt%, Zn not more than 0.10 wt%, Fe not more than 0.20 wt%, and the balance of Al and inevitable impurities. The machining process of the aluminum alloy comprises the following steps: firstly, a cast rod is uniformly heated from room temperature to 540-570 DEG C with the heating speed of 30-200 DEG C / h for keeping 10-30 hours, and is quickly cooled; the material is extruded after preheating, is cooled in water online, is quenched, and is straightened; and finally, the artificial aging is performed. As the content of main alloy element in the 6XXX aluminum alloy is reasonably adjusted, the material both has higher strength and better anodic oxidization effect; and the alloy material is an ideal material for manufacturing the outer part of the electronic product, and is broad in market application prospect.

Description

Technical field [0001] The invention relates to an aluminum alloy, in particular to a high-performance aluminum alloy for appearance parts of electronic products and a processing method thereof, and belongs to the technical field of non-ferrous metals. Background technique [0002] At present, aluminum alloys used in the manufacture of appearance parts of electronic products are mainly 6XXX series aluminum alloys, such as 6063 and 6061 aluminum alloys. 6063 aluminum alloy has good anodizing performance. The appearance parts made of 6063 alloy have strong surface gloss and bright color after anodizing. However, the yield strength of 6063 aluminum alloy is lower (~210MPa); the yield strength of 6061 aluminum alloy (~280MPa) is higher than that of 6063 aluminum alloy, but the anodizing effect of the material is slightly worse than that of 6063 aluminum alloy (for example, after anodizing, The surface color is relatively yellow). [0003] The strength and anodizing performance of 6X...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043C22C21/08C22F1/047C22F1/05
Inventor 刘成钟皓赵健熊明华杨达彬张道谢朝晖
Owner 苏州中色研达金属技术有限公司
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