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6061G aluminum alloy for smart phone and processing method thereof

A technology of a smart phone and a processing method, applied in the field of non-ferrous metals and their processing technology, can solve the problems of difficult control of material grain defects, waste of aluminum materials, and large losses.

Active Publication Date: 2017-12-15
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to its medium strength and good anodic oxidation performance, 6061 aluminum alloy has good application prospects in the field of smart phones. At present, the main manufacturing method of aluminum materials for smart phones is profile extrusion. The technical feature of extrusion is that the material grain is easy Control, but the extruded plate cannot be effectively thinned, the usual thickness is about 9mm, which leads to the extruded plate in the mobile phone parts processing plant, the aluminum blank needs CNC machining to cut off a large amount of metal, in order to obtain a finished mobile phone of about 0.8mm For the shell, aluminum metal is wasted seriously in this process, and the cost of CNC working hours is extremely expensive, which does not conform to the green and energy-saving industrial concept advocated by the state. For this reason, some aluminum factories try to use thin aluminum alloy rolled materials to save serious waste of metal and CNC. High man-hour cost, but the 6061 aluminum alloy rolling material has inherent limitations, which makes it difficult to control material grain defects. Even with the new rolling process, there are still light material grain defects, which can only meet the general requirements of mid-range smart phones for appearance parts , and the material pattern defect is unstable, often exceeding the minimum acceptable standard of the mobile phone accessories factory, so it cannot be used and the loss is large

Method used

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  • 6061G aluminum alloy for smart phone and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for processing 6061G aluminum alloys for smart phones is as follows: according to the alloy formula given in Example 1 in Table 1, aluminum water with corresponding alloy ratios is prepared and cast into ingots; the ingots are sent into a vertical pusher heating furnace for homogenization Annealing: heat up at a heating rate of 32°C / h, when the metal temperature rises to 530°C, keep it warm for 6 hours, then force the fan to cool the ingot to 452°C, keep it warm for 2 hours, then the ingot comes out of the furnace; hot rolled into coils; coil cooling After that, continue cold rolling to reduce to the thickness of intermediate annealing; then carry out intermediate annealing on the continuous annealing line (reserve 32% cold working rate after intermediate annealing), annealing temperature: 503 ° C, holding time: 10s; secondary cold rolling to Finished product thickness; return to continuous annealing line for finished product solution treatment, solution tempera...

Embodiment 2

[0041] A method for processing 6061G aluminum alloys for smart phones is as follows: according to the alloy formula given in Example 2 in Table 1, aluminum water with corresponding alloy ratios is prepared and cast into ingots; the ingots are sent into a vertical pusher heating furnace for homogenization Annealing: heat up at a heating rate of 40°C / h, when the metal temperature rises to 540°C, keep the temperature for 8 hours, then blow the fan to cool the ingot to 470°C, keep it for 2 hours, then the ingot is out of the furnace; hot rolled into coils; coil cooling After that, continue cold rolling to reduce to the thickness of intermediate annealing; then carry out intermediate annealing on the continuous annealing line (reserve 40% cold working rate after intermediate annealing), annealing temperature: 520 ° C, holding time: 15s; secondary cold rolling to Finished product thickness; return to the continuous annealing line for finished product solution treatment, solution temp...

Embodiment 3

[0044] A method for processing 6061G aluminum alloys for smart phones is as follows: according to the alloy formula given in Example 3 in Table 1, aluminum water with corresponding alloy ratios is prepared and cast into ingots; the ingots are sent into a vertical pusher heating furnace for homogenization Annealing: heat up at a heating rate of 45°C / h. When the metal temperature rises to 550°C, keep it warm for 9 hours, then blow the fan to cool the ingot to 490°C, keep it warm for 3 hours, and then release the ingot from the furnace; roll it into coils; cool the coils After that, continue cold rolling to reduce to the thickness of intermediate annealing; then carry out intermediate annealing on the continuous annealing line (reserve 45% cold working rate after intermediate annealing), annealing temperature: 540 ° C, holding time: 20s; secondary cold rolling to Finished product thickness; return to the continuous annealing line for finished product solution treatment, solution t...

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Abstract

The invention discloses a 6061G aluminum alloy for a smart phone and a processing method thereof. The aluminum alloy comprises the following components in percentages by weight: 0.50-0.70% of Si, 0.11-0.15% of Fe, 0.15-0.20% of Cu, 0.06-0.08% of Mn, 0.80-1.10% of Mg, 0.11-0.20% of Cr, 0.01-0.03% of Ti and the balance of Al and inevitable impurities. The corresponding processing method comprises the following eight steps: ingot casting, homogenizing annealing, hot rolling, cold rolling, intermediate annealing, secondary cold rolling, solid solution treatment and final aging treatment successively. An aluminum product, with the components of the aluminum alloy, obtained by means of the processing method has an extremely excellent anodizing effect, meets the sand blasting of extremely thin 205-210-mesh zircon sand, is an ideal aluminum alloy material, which is used for 6-series mobile phone appearance part having high demand on strength and anodizing effect, and is wide in market application prospect.

Description

technical field [0001] The invention relates to the technical field of nonferrous metals and their processing techniques, in particular to a 6061G aluminum alloy for smart phones and a processing method thereof. Background technique [0002] Due to its medium strength and good anodic oxidation performance, 6061 aluminum alloy has good application prospects in the field of smart phones. At present, the main manufacturing method of aluminum materials for smart phones is profile extrusion. The technical feature of extrusion is that the material grain is easy Control, but the extruded plate cannot be effectively thinned, the usual thickness is about 9mm, which leads to the extruded plate in the mobile phone parts processing plant, the aluminum blank needs CNC machining to cut off a large amount of metal, in order to obtain a finished mobile phone of about 0.8mm For the shell, aluminum metal is wasted seriously in this process, and the cost of CNC working hours is extremely expen...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22F1/047
CPCC22C21/08C22F1/047
Inventor 于海林刘君城王权
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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