Composite aluminum alloy plate for a case of an electronic product

Abstract

A composite aluminum alloy plate for a case of an electronic product contains: a first aluminum alloy plate and a second aluminum alloy plate. The first aluminum alloy plate is made of first aluminum alloy material, and the second aluminum alloy plate is made of second aluminum alloy material. The first aluminum alloy material is selected from any one of 6XXX series aluminum alloy to 8XXX series aluminum alloy, and the second aluminum alloy material is selected from any one of 1XXX series aluminum alloy to 5XXX series aluminum alloy. The first and second aluminum alloy plates are stacked and compounded by hot rolling so as to produce the composite aluminum alloy plate having an external layer, an intermediate layer, and an internal layer. Thereafter, the composite aluminum alloy plate is laminated by cold rolling and is stabilized in a tempering treatment.

Claims

1. A composite aluminum alloy plate for a case of an electronic product comprising: a first aluminum alloy plate and a second aluminum alloy plate which are stacked and compounded, wherein the first aluminum alloy plate is made of first aluminum alloy material, and the second aluminum alloy plate is made of second aluminum alloy material different from the first aluminum alloy material of the first aluminum alloy plate; wherein the first aluminum alloy material of the first aluminum alloy plate is selected from any one of 6XXX series aluminum alloy to 8XXX series aluminum alloy, and the second aluminum alloy material of the second aluminum alloy plate is selected from any one of 1XXX series aluminum alloy to 5XXX series aluminum alloy; wherein the first aluminum alloy plate and the second aluminum alloy plate are stacked and compounded by hot rolling so as to produce the composite aluminum alloy plate having a first layer, a second layer, and a third layer, and the composite aluminum alloy plate is laminated in a desired thickness by cold rolling and is stabilized in a tempering treatment T; wherein the first aluminum alloy plate is the second layer of the composite aluminum alloy plate, the second aluminum alloy plate is the first layer of the composite aluminum alloy plate, and a ratio of thicknesses of the second layer and the first layer is 1 to 9:1; wherein the second aluminum alloy plate includes an anodized aluminum layer formed thereon, and the anodized aluminum layer is the third layer of the composite aluminum alloy plate; wherein the desired thickness of the composite aluminum alloy plate is 0.1 mm to 6.0 mm, a total elongation of the composite aluminum alloy plate is 5% to 25%, a tensile strength of the second layer is 300 Mpa to 550 Mpa, and a tensile strength of a first layer is 100 Mpa to 150 Mpa.

2. The composite aluminum alloy plate for the case of the electronic product as claimed in claim 1, wherein a ratio of thicknesses of the second layer and the a first layer is 1 to 2:1.

3. A composite aluminum alloy plate for a case of an electronic product comprising: a first aluminum alloy plate and a second aluminum alloy plate which are stacked and compounded, wherein the first aluminum alloy plate is made of first aluminum alloy material, and the second aluminum alloy plate is made of second aluminum alloy material different from the first aluminum alloy material of the first aluminum alloy plate; wherein the first aluminum alloy material of the first aluminum alloy plate is selected from any one of 6XXX series aluminum alloy to 8XXX series aluminum alloy, and the second aluminum alloy material of the second aluminum alloy plate is selected from any one of 1XXX series aluminum alloy to 5XXX series aluminum alloy; wherein the first aluminum alloy plate and the second aluminum alloy plate are stacked and compounded by hot rolling so as to produce the composite aluminum alloy plate having a first layer, a second layer, and a third layer, and the composite aluminum alloy plate is laminated in a desired thickness by cold rolling and is stabilized in a tempering treatment T; wherein the first aluminum alloy plate is the second layer of the composite aluminum alloy plate, the second aluminum alloy plate is the first layer of the composite aluminum alloy plate, and a ratio of thicknesses of the second layer and the first layer is 1 to 9:1; wherein the second aluminum alloy plate includes an anodized aluminum layer formed thereon, and the anodized aluminum layer is the third layer of the composite aluminum alloy plate; wherein the first aluminum alloy plate is 7075 aluminum alloy plate, and the second aluminum alloy plate is 5052 aluminum alloy plate; wherein the desired thickness of the composite aluminum alloy plate is 0.1 mm to 6.0 mm, a total elongation of the composite aluminum alloy plate is 5% to 25%, a tensile strength of the second layer is 300 Mpa to 550 Mpa, and a tensile strength of the a first layer is 100 Mpa to 150 Mpa.

4. The composite aluminum alloy plate for the case of the electronic product as claimed in claim 3, wherein the tempering treatment T is a refining treatment T6 by which the composite aluminum alloy plate is hot rolled, cold rolled, and solution treated in the temperature of 480° C. to 520° C., and the composite aluminum alloy plate is aging treated for 24 hours within the temperature of 110° C. to 130° C.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a cross sectional view showing a composite aluminum alloy plate for a case of an electronic product according to a preferred embodiment of the present invention.

(2) FIG. 2 is a flow chart of a method of making composite aluminum alloy plate according to the preferred embodiment of the present invention.

(3) FIG. 3 is a flow chart of a method of making a case of an electronic product according to the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(4) With reference to FIG. 1, a composite aluminum alloy plate for a case of an electronic product according to a preferred embodiment of the present invention comprises: a first aluminum alloy plate 10 and a second aluminum alloy plate 20 which are stacked and compounded, wherein the first aluminum alloy plate 10 is made of first aluminum alloy material, and the second aluminum alloy plate 20 is made of second aluminum alloy material different from the first aluminum alloy material of the first aluminum alloy plate 10. For example, the first aluminum alloy material of the first aluminum alloy plate 10 is selected from any one of 6XXX series aluminum alloy to 8XXX series aluminum alloy, and the second aluminum alloy material of the second aluminum alloy plate 20 is selected from any one of 1XXX series aluminum alloy to 5XXX series aluminum alloy. The first aluminum alloy plate 10 and the second aluminum alloy plate 20 are stacked and compounded by hot rolling so as to produce the composite aluminum alloy plate P having an external layer, an intermediate layer, and an internal layer. The composite aluminum alloy plate P is laminated in a desired thickness by cold rolling and is stabilized in a tempering treatment T. The first aluminum alloy plate 10 is the intermediate layer of the composite aluminum alloy plate P, the second aluminum alloy plate 20 is the external layer of the composite aluminum alloy plate P, and a ratio of thicknesses of the intermediate layer and the external layer is 1 to 9:1, wherein the second aluminum alloy plate 20 includes an anodized aluminum layer 21 anodized on an outer surface thereof.

(5) Referring to FIG. 2, a method of making composite aluminum alloy plate according to the preferred embodiment of the present invention comprises steps of:

(6) S1-2) hot rolling, wherein the first aluminum alloy plate 10 and the second aluminum alloy plate 20 are stacked and compounded by hot rolling to produce the composite aluminum alloy plate P having the external layer, the intermediate layer, and the internal layer, wherein the first aluminum alloy plate 10 is the intermediate layer of the composite aluminum alloy plate P, and the second aluminum alloy plate 20 is the external layer of the composite aluminum alloy plate P;

(7) S1-2) hot rolling, wherein the first aluminum alloy plate 10 and the second aluminum alloy plate 20 are stacked and compounded in a hot rolling manner to produce the composite aluminum alloy plate P having the external layer, the intermediate layer, and the internal layer, wherein the first aluminum alloy plate 10 is the intermediate layer of the composite aluminum alloy plate P, and the second aluminum alloy plate 20 is the external layer of the composite aluminum alloy plate P;

(8) S1-3) cold rolling, wherein the composite aluminum alloy plate P is laminated in the desired thickness by cold rolling, wherein the ratio of thicknesses of the intermediate layer and the external layer is 1 to 9:1;

(9) S1-4) stabilizing the composite aluminum alloy plate P in the tempering treatment T; and

(10) S1-5) anodizing the second aluminum alloy plate 20 so as to produce the aluminum layer 21 on the outer surface of the second aluminum alloy plate 20.

(11) It is to be note that a hardness of the 1XXX series aluminum alloy to the 5XXX series aluminum alloy is less than a hardness of the 6XXX series aluminum alloy to the 8XXX series aluminum alloy.

(12) Thereby, the composite aluminum alloy plate P has a stable mechanical property, brilliant tensile strength and elongation.

(13) The desired thickness of the composite aluminum alloy plate P is 0.1 mm to 6.0 mm, a total elongation of the composite aluminum alloy plate P is 5% to 25%, a tensile strength of the intermediate layer is 300 Mpa to 550 Mpa, and a tensile strength of the external layer is 100 Mpa to 150 Mpa. Preferably, the first aluminum alloy plate 10 is the intermediate layer of the composite aluminum alloy plate P, and the first aluminum alloy material of the first aluminum alloy plate 10 is selected from any one of the 6XXX series aluminum alloy to the 8XXX series aluminum alloy so as to enhance mechanical strength of the case of the electronic product. Furthermore, the second aluminum alloy plate 20 is the external layer of the composite aluminum alloy plate P, the second aluminum alloy material of the second aluminum alloy plate 20 is selected from any one of the 1XXX series aluminum alloy to the 5XXX series aluminum alloy, and the second aluminum alloy plate 20 is anodized and dyed so as to enhance aesthetic appearance of the case of the electronic product.

(14) In another embodiment, the first aluminum alloy plate 10 is 7075 aluminum alloy plate, and the second aluminum alloy plate 20 is 5052 aluminum alloy plate and is anodized and dye, wherein the hardness of the second aluminum alloy plate 20 is up to 6XXX series aluminum alloy so as to obtain chemical stability, insulation, high-temperature resistance, and abrasion resistance.

(15) In another embodiment, the composite aluminum alloy plate P is stabilized by using a refining treatment T6, and the first aluminum alloy plate 10 is the 7075 aluminum alloy plate and is stabilized by using the refining treatment T6, wherein the composite aluminum alloy plate P is hot rolled, cold rolled, and solution treated in a temperature of 480° C. to 520° C. Thereafter, the composite aluminum alloy plate P is aging treated for 24 hours within a temperature of 110° C. to 130° C.

(16) In another embodiment, a ratio of thicknesses of the intermediate layer and the external layer is 1 to 2:1, for example, the ratio of the thicknesses of the intermediate layer and the external layer is 1:1, such that the composite aluminum alloy plate P is stamped to enhance a quality of right-angled sides of the case of the electronic product. When the first aluminum alloy plate 10 is the 7075 aluminum alloy plate, a bending resistance and the mechanical strength of the case of the electronic product is enhanced.

(17) As shown in FIG. 3, a method of making the case of the electronic product according to the preferred embodiment of the present invention comprises steps of:

(18) S2-1) providing martials, wherein the first aluminum alloy material of the first aluminum alloy plate 10 and the second aluminum alloy material of the second aluminum alloy plate 20 are provided, wherein the first aluminum alloy material is selected from any one of the 6XXX series aluminum alloy to the 8XXX series aluminum alloy, and the second aluminum alloy material is selected from any one of the 1XXX series aluminum alloy to 5XXX series aluminum alloy;

(19) S2-2) hot rolling, wherein the first aluminum alloy plate 10 and the second aluminum alloy plate 20 are stacked and compounded by hot rolling to produce the composite aluminum alloy plate P having the external layer, the intermediate layer, and the internal layer, wherein the first aluminum alloy plate 10 is the intermediate layer of the composite aluminum alloy plate P, and the second aluminum alloy plate 20 is the external layer of the composite aluminum alloy plate P;

(20) S2-3) cold rolling, wherein the composite aluminum alloy plate P is laminated in the desired thickness by cold rolling, wherein the ratio of thicknesses of the intermediate layer and the external layer is 1 to 9:1;

(21) S2-4) stamping and heat treating, wherein the composite aluminum alloy plate P is stabilized in the tempering treatment T and a stamping manner so produce the case of the electronic product; and

(22) S2-5) anodizing the second aluminum alloy plate 20 so as to produce the aluminum layer 21 on the outer surface of the second aluminum alloy plate 20.

(23) The desired thickness of the composite aluminum alloy plate P is 0.1 mm to 6.0 mm, a total elongation of the composite aluminum alloy plate P is 5% to 25%, a tensile strength of the intermediate layer is 300 Mpa to 550 Mpa, and a tensile strength of the external layer is 100 Mpa to 150 Mp, wherein the first aluminum alloy plate 10 is the 7075 aluminum alloy plate, and the second aluminum alloy plate 20 is 5052 aluminum alloy plate.

(24) In the step S2-4, the first aluminum alloy plate 10 is the 7075 aluminum alloy plate and is stabilized by using the refining treatment T6, wherein the composite aluminum alloy plate P is hot rolled, cold rolled, and solution treated in the temperature of 480° C. to 520° C. Thereafter, the composite aluminum alloy plate P is aging treaded treated for 24 hours within the temperature of 110° C. to 130° C., such that precipitation hardening of the first aluminum alloy plate 10 is stable.

(25) In the step S2-4, the first aluminum alloy plate 10 is solution treated, stamped, and aging treated in turn so as to have stable mechanical property of the case of the electronic product.

(26) In another embodiment, the first aluminum alloy plate 10 is stamped before after aging treated in the step S2-4 so as to have stable mechanical property of the case of the electronic product.

(27) While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.