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6xxx series aluminum alloys for appearance parts of electronic products and processing methods thereof

A technology of electronic products and processing methods, which is applied to the composition of the aluminum alloy and its manufacturing field, can solve the problems of ignoring the comprehensive improvement of mechanical properties and anodic oxidation properties, and only focusing on the improvement of mechanical properties, so as to achieve broad market application prospects, The effect of improving strength performance

Active Publication Date: 2018-03-27
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

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Problems solved by technology

[0004] However, the existing technologies involving 6XXX series aluminum alloys often only focus on the improvement of mechanical properties (such as CN103131904A, CN 102876938A, etc.), while ignoring the comprehensive improvement of mechanical properties and anodic oxidation properties, so they have limitations

Method used

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  • 6xxx series aluminum alloys for appearance parts of electronic products and processing methods thereof
  • 6xxx series aluminum alloys for appearance parts of electronic products and processing methods thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Semi-continuous cast rod: diameter 178mm, cast rod composition in terms of mass percentage: Mg: 0.96wt%, Si: 0.97wt%, Cu: 0.32wt%, Mn: 0.01wt%, Cr: 0.01wt.%, Fe: 0.12wt%, Zn: 0.01wt%, Ti: 0.02wt%, Zr: 0.005wt%, and the balance is Al.

[0036] Homogenizing heat treatment for alloy cast rods: raise to 560°C at a rate of 50°C / h for 15 hours, then rapidly cool (cooling rate greater than 160°C / h). The material is extruded (the heating temperature of the extrusion ingot is 520°C, the temperature of the extrusion cylinder is 470°C, the temperature of the mold is 500°C, the speed of the extrusion rod is 2.9mm / s, and the extrusion ratio is 35), online quenching, straightening Afterwards, carry out artificial aging (175℃×8h).

Embodiment 2

[0038] Semi-continuous cast rod: diameter 178mm, cast rod composition in terms of mass percentage: Mg: 0.81wt%, Si: 0.86wt%, Cu: 0.34wt%, Mn: 0.05wt%, Cr: 0.05wt%, Fe: 0.13 wt%, Zn: 0.12wt%, Ti: 0.02wt%, Zr: 0.01wt%, and the balance is Al.

[0039] Homogenizing heat treatment for alloy cast rods: raise the temperature at a rate of 100 °C / h to 550 °C for 15 hours, then rapidly cool (cooling rate greater than 160 °C / h). Extrude the material (the heating temperature of the extrusion ingot is 515°C, the temperature of the extrusion cylinder is 470°C, the temperature of the mold is 500°C, the speed of the extrusion rod is 2.8mm / s, and the extrusion ratio is 40), online quenching, straightening Afterwards, carry out artificial aging (175℃×8h).

Embodiment 3

[0041] Semi-continuous cast rod: diameter 178mm, cast rod composition in terms of mass percentage: Mg: 0.85wt%, Si: 0.78wt%, Cu: 0.20wt%, Mn: 0.01wt%, Cr: 0.01wt.%, Fe: 0.13wt%, Zn: 0.01wt%, Ti: 0.03wt%, Zr: 0.01wt%, and the balance is Al.

[0042]Homogenizing heat treatment for alloy cast rods: raise the temperature at a rate of 70 °C / h to 560 °C for 10 hours, and then rapidly cool (cooling rate greater than 160 °C / h). Extrude the material (the heating temperature of the extrusion ingot is 506°C, the extrusion cylinder temperature is 460°C, the mold temperature is 490°C, the extrusion rod speed is 2mm / s, and the extrusion ratio is 37), online quenching and straightening Afterwards, carry out artificial aging (175°C×8h).

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Abstract

The invention relates to a 6XXX series aluminum alloy for appearance parts of electronic products and a processing method thereof. The alloy composition and content are: Mg 0.7-1.3wt%, Si 0.7-1.3wt%, Cu 0.1-0.5wt%, Mn≤0.10wt%, Cr≤0.10wt%, Ti≤0.10wt%, Zr≤0.10wt%, Zn≤0.50wt%, Fe≤0.20wt%, the remaining components are Al and unavoidable impurities. The processing technology of the aluminum alloy is: rapid cooling after homogenization heat treatment, and then extruding after preheating the material, the heating temperature of the extrusion ingot is 500-550°C, the temperature of the extrusion cylinder is 450-500°C, and the mold temperature is 450~510℃, the extrusion rod speed is 1~6 mm / s, and the extrusion ratio is greater than 25; then online water cooling quenching + straightening, and finally artificial aging. The invention improves the strength of the alloy on the basis of ensuring the anodic oxidation performance of the alloy. The aluminum alloy is an ideal material for manufacturing appearance parts for electronic products, and the market application prospect is very broad.

Description

technical field [0001] The invention relates to a 6XXX series aluminum alloy for appearance parts of electronic products, in particular to the composition of the aluminum alloy and a manufacturing method thereof, belonging to the technical field of nonferrous metals. Background technique [0002] Aluminum alloy is widely used in the manufacture of appearance parts of electronic products due to its light weight, good heat dissipation, and easy coloring of surface treatment. [0003] 6XXX series aluminum alloys, such as 6063 and 6061 alloys, are the main materials for manufacturing appearance parts of electronic products. Compared with 6063 alloy, 6061 alloy has higher strength, but after the latter is anodized, the color is bright and white, and it is more beautiful. At present, with the continuous development of electronic products, it is necessary to use a new type of aluminum alloy that is stronger than 6061 aluminum alloy and has the same anodic oxidation performance as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05
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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