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Cold forging method and metal housing processing method

A processing method, cold forging technology, applied in metal processing equipment, anodizing, engine components, etc., can solve problems such as unsatisfactory product appearance and large mold damage

Active Publication Date: 2012-09-26
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems in the prior art that the cold forging method has great damage to the mold and the appearance of the product is not ideal, the present invention provides a cold forging method, by which the damage to the mold during the cold forging process can be greatly reduced, and through the The product prepared by the method has excellent appearance and no scratches

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment is used to illustrate the cold forging method and the processing method of the metal shell disclosed in the present invention.

[0035] A 6063 aluminum alloy with a thickness of 3 mm was used as the metal substrate. Mechanically polish the aluminum alloy surface.

[0036] Put the polished aluminum alloy forging billet into the electrolyte (the concentration of sulfuric acid is 16wt%, the concentration of phosphoric acid is 2wt%), and treat it at 20°C with a voltage of 20V and a current density of 1A / dm2 for 10min to form on the surface of the aluminum alloy. 10um thick anodized film.

[0037] Soak the aluminum alloy with anodized film on the surface in saponification solution (50g / l stearic acid, 60g / l trisodium phosphate) for 5s.

[0038] The aluminum alloy is roughly forged with a hydraulic press at a pressure of 250 tons to form a rough blank with a basic outline.

[0039] The crude embryos were solution treated at 525°C for 3 hours, and then quenche...

Embodiment 2

[0045] This embodiment is used to illustrate the cold forging method and the processing method of the metal shell disclosed in the present invention.

[0046] A 6063 aluminum alloy with a thickness of 3 mm was used as the metal substrate. The aluminum alloy was annealed at 405°C for 2h. Mechanically polish the aluminum alloy surface.

[0047] Put the polished aluminum alloy forging blank into the electrolyte (phosphoric acid concentration is 15wt%), and treat it at 20°C with a voltage of 25V and a current density of 2A / dm2 for 10min, forming a 15um thick anodic oxide film on the surface of the aluminum alloy .

[0048] Soak the aluminum alloy with anodized film on the surface in forging oil (95wt% mineral oil, 2wt% vegetable oil, 2.95wt% extreme pressure additive, 0.05wt% anti-foaming additive) for 10s.

[0049] The aluminum alloy is roughly forged with a hydraulic press at a pressure of 200 tons to form a rough blank with a basic outline.

[0050] The crude embryo was sol...

Embodiment 3

[0056] This embodiment is used to illustrate the cold forging method and the processing method of the metal shell disclosed in the present invention.

[0057] A 6063 aluminum alloy with a thickness of 3 mm was used as the metal substrate. The aluminum alloy was annealed at 425° C. for 1 h. Mechanically polish the aluminum alloy surface.

[0058] Put the polished aluminum alloy forging billet into the electrolyte (the concentration of sulfuric acid is 13wt%, the concentration of phosphoric acid is 9wt%), and treat it at 25°C with a voltage of 22V and a current density of 1A / dm2 for 8min, forming on the surface of the aluminum alloy. 10um thick anodized film.

[0059] Soak the aluminum alloy with anodized film on the surface in forging oil (85wt% mineral oil, 5wt% vegetable oil, 9.9wt% extreme pressure additive, 0.01wt% anti-foaming additive) for 6s.

[0060] The aluminum alloy is roughly forged with a hydraulic press at a pressure of 250 tons to form a rough blank with a bas...

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PUM

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Abstract

The invention provides a cold forging method and a metal housing processing method. The cold forging method comprises steps of performing anodic oxidation treatment to the metal material surface so as to obtain an anode oxide film; enabling the anode oxide film to adsorb a lubricant, forging and pressing the metal material absorbed with the lubricant, and removing the anode oxide film. The damage of a mold in the cold forging process is greatly reduced by the method, and the products prepared by the method are excellent in appearance without scratching.

Description

technical field [0001] The invention relates to a cold forging method of a metal component and a processing method of a metal casing, in particular to a cold forging method of an aluminum alloy component and a processing method of an aluminum alloy mobile phone casing. Background technique [0002] Electronic products with metal casings can bring unparalleled visual impact, and at the same time have the advantages of delicate touch, wear resistance, drop resistance, and corrosion resistance. They have always been highly respected by consumers and represent the development direction of high-end electronic products. [0003] At present, precision components such as complex mobile phone structural parts in China mainly use die-casting methods. However, this type of product has the following major disadvantages: (1) die-casting requires excellent fluidity of raw materials, which limits the type of material used; (2) the surface of die-casting parts is rough and poor in appearanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J3/00C25D11/02B21K1/26
Inventor 段水亮邹云飞陈梁郭强
Owner BYD CO LTD
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