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Aluminum alloy component machining method

A technology of aluminum alloy components and processing methods, applied in the field of alloys, can solve the problems of affecting the surface quality of aluminum alloy components, prone to pitting defects and the like

Active Publication Date: 2021-04-20
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the inventor found that the aluminum alloy components prepared in the related art are prone to pitting defects after anodic oxidation treatment, which affects the surface quality of the aluminum alloy components

Method used

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  • Aluminum alloy component machining method
  • Aluminum alloy component machining method
  • Aluminum alloy component machining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0065] In this embodiment, the aluminum alloy member is prepared by the following steps:

[0066] Step 1. Heat the material to be treated at 460°C and keep it warm for 4 hours to obtain the heated material.

[0067] Step 2. At the extrusion temperature of 420°C, extrude the heated material into a mold at 430°C at a speed of 10m / min, and cool to room temperature to obtain a molded part, which is a 6mm thick plate.

[0068] Step 3. Use CNC equipment to perform surface grinding and polishing on the formed part until the surface roughness of the formed part is 0.5 μm.

[0069] Step 4. Immerse the molded part after step 3 in the electrolyte solution with a volume ratio of oxalic acid and sulfuric acid of 4:1 at 30°C, at 1.4A / dm 2 The current density constant current anodizing treatment for 35 minutes, to obtain aluminum alloy components.

[0070] Step 5, dyeing the aluminum alloy component for 2 minutes, and then performing hot water sealing for 40 minutes to obtain an aluminum a...

Embodiment approach 2

[0076] In this embodiment, the aluminum alloy member is prepared by the following steps:

[0077] Step 1. Heat the material to be treated at 440° C. and keep it warm for 2 hours to obtain the heated material.

[0078] Step 2. Extrude the heated material at an extrusion temperature of 380°C at a speed of 15m / min into a mold at 440°C, and cool to room temperature to obtain a molded part, which is a plate with a thickness of 8mm.

[0079] Step 3. Use CNC equipment to perform surface grinding and polishing on the formed part until the surface roughness of the formed part is 0.5 μm.

[0080] Step 4. Immerse the molded part after step 3 in the electrolyte solution with a volume ratio of oxalic acid and sulfuric acid of 4:1 at 25°C, at 1.4A / dm 2 The current density constant current anodizing treatment for 40 minutes, to obtain aluminum alloy components.

[0081] Step 5, dyeing the aluminum alloy component for 3 minutes, and then performing hot water sealing for 50 minutes to obtain...

Embodiment approach 3

[0087] In this embodiment, the aluminum alloy member is prepared by the following steps:

[0088] Step 1. Heat the material to be treated at 480° C. and keep it warm for 4 hours to obtain the heated material.

[0089] Step 2. Extrude the heated material at an extrusion temperature of 400°C at a speed of 18m / min into a mold at 420°C, and cool to room temperature to obtain a molded part, which is a 9mm thick plate.

[0090] Step 3. Use CNC equipment to perform surface grinding and polishing on the formed part until the surface roughness of the formed part is 0.4 μm.

[0091] Step 4. Immerse the molded part after step 3 in the electrolyte solution with a volume ratio of oxalic acid and sulfuric acid of 4:1 at 28°C, at 1.4A / dm 2 The current density constant current anodizing treatment for 37 minutes, to obtain aluminum alloy components.

[0092] Step 5, dyeing the aluminum alloy component for 2 minutes, and then performing hot water sealing for 30 minutes to obtain an aluminum a...

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Abstract

The invention relates to an aluminum alloy component machining method, and belongs to the technical field of metal machining. The aluminum alloy component machined through the aluminum alloy component machining method has the beneficial effects of being high in surface flatness and few in pocking mark defect. The aluminum alloy component machining method comprises the steps that a to-be-treated material is heated at a first preset temperature to obtain a heated material; the heated material is extruded into a mold with a third preset temperature at a second preset temperature, a formed part is obtained after cooling, and the second preset temperature is lower than the recrystallization temperature of the to-be-treated material; surface treatment is carried out on the formed part until surface roughness of the formed part is within a preset range; and anodic oxidation treatment is carried out on the formed part subjected to the surface treatment, and an aluminum alloy component is obtained.

Description

technical field [0001] The present disclosure relates to the technical field of alloys, in particular to a method for processing aluminum alloy components. Background technique [0002] Aluminum alloy components are commonly used components in the field of product manufacturing. For example, the aluminum alloy rear cover of electronic equipment, the aluminum alloy middle frame, etc., and the interior accessories of vehicles, etc. Usually, the aluminum alloy components adopt the processing method of extruding and then anodizing. The aluminum alloy component is provided with an oxide film layer attached to the surface through anodic oxidation, and the surface hardness and wear resistance of the aluminum alloy component are improved by using the oxide film. [0003] However, the inventors found that the aluminum alloy components prepared in the related art are prone to pitting defects after anodic oxidation treatment, which affects the surface quality of the aluminum alloy co...

Claims

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Application Information

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IPC IPC(8): B22D18/02B22D18/08C25D11/08C25D11/10C22C21/08C22C21/10
Inventor 冀方冉
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD