JPH06300193A - Container made of aluminum alloy - Google Patents

Abstract

PURPOSE:To reduce the thickness, the weight and a production cost of a container made of an aluminum alloy formed through impact molding or impact ironing molding. CONSTITUTION:A 3000 system aluminum alloy is used as a material for container formed through impact molding or impact ironing molding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum alloy container, and more specifically to reducing the production cost by making the aluminum alloy container thinner and lighter, and to improve the strength of the container itself. The present invention relates to an aluminum alloy container.

[0002]

2. Description of the Related Art In general, aluminum alloys utilize the characteristics of beauty, good formability and good corrosion resistance,
Recently, demand for aluminum alloy containers such as aerosol containers has expanded remarkably. However, impact slag, which is a material for conventional aerosol containers, is JIS 10
00 series, among them JIS1070, JIS1050,
JIS1100 and the like are used. These materials are
An aluminum material that is soft enough for impact molding and has adequate container strength.

[0003]

However, in such an invention, the workability in impact molding is good because the material is soft, but the buckling and pressure resistance of the aerosol container produced by impact molding are It was insufficient. Therefore, there is no problem when the aerosol can is manufactured with a thick can body, but thinning the can body for the purpose of reducing the production cost leads to a decrease in buckling strength and pressure resistance of the aerosol container. There was a flaw.

The present invention has been made in view of the conventional problems, and it is intended to improve the buckling strength and pressure resistance of an aluminum alloy container such as an aerosol container obtained by impact molding or impact ironing molding. In the end, the purpose is to reduce the thickness and weight of the container and reduce the production cost.

[0005]

In order to solve this problem, the present invention is characterized in that a 3000 series aluminum alloy is used as a material of a container obtained by impact molding or impact ironing molding. As an embodiment, the material of the container obtained by impact molding or impact ironing molding is Si 0.
60 wt% or less, Fe 0.70 wt% or less, Cu
0.30 wt% or less, Mn 0.25 to 1.50 wt
%, Mg 0.20 to 1.50 wt%, Zn 0.40
It is characterized in that the balance is not more than wt% and the balance is Al. The 3000 series aluminum alloy is JIS
Standard 3000 series aluminum alloy and AA standard 3000
This is a concept that includes aluminum alloys.

[0006]

The operation of the present invention having the above construction will be described. The material of the container obtained by impact molding or impact ironing molding is a 3000 series aluminum alloy, and as an example, an aluminum alloy containing the chemical components shown in Table 1 (hereinafter referred to as “aluminum alloy according to example”). ) Is used, the conventional J
As long as it is an aerosol can having the same buckling strength and the same pressure resistance as the aerosol can made of IS1000 series aluminum alloy, the aerosol can made of the aluminum alloy according to this embodiment can have a thin can body. Moreover, since the weight can be reduced, the production cost can be reduced. When an aluminum alloy other than 1000 series and 3000 series is used as the material, the hardness of the material,
The inventors have found that it is impossible to mold with a commonly used impact press because the tensile strength is too high. Incidentally, the aluminum alloy according to this example,
It goes without saying that it belongs to the 3000 series aluminum alloy from its chemical composition.

[0007]

EXAMPLE The chemical composition and mechanical properties of impact slag made of the aluminum alloy according to this example are shown in Table 1.
And shown in Table 2.

[Table 1]

[Table 2]

Next, Tables 3 and 4 show the chemical components and mechanical properties of the impact slag produced by JIS1070, which is a conventional aluminum material for impact molding.

[Table 3]

[Table 4]

Further, an aerosol can (hereinafter referred to as a "conventional aerosol can") manufactured by impact molding an impact slag manufactured by JIS 1070, which is an aluminum material for impact molding, and an aluminum alloy according to this embodiment are used. From the aerosol can manufactured by impact molding the manufactured impact slag (hereinafter referred to as the "aerosol can according to the present invention"), each test piece is sampled, its mechanical properties are measured, and The buckling strength and pressure resistance of the aerosol can were measured. The results are shown in Table 5.

[Table 5]

From Table 5, when comparing the aerosol can according to the present invention with the conventional aerosol can, if the same diameter, same height and same thickness, tensile strength and hardness are improved by about 40%, and the aerosol can is improved. Buckling strength and pressure resistance of the can is about 2
It improved by 0%. Therefore, it can be seen that the aerosol can according to the present invention is superior in strength to the conventional aerosol can.
Therefore, when an aerosol can having the same buckling strength and compressive strength as the conventional aerosol can is manufactured using the aluminum alloy according to this example, the can body and the can of the aerosol can made of the aluminum alloy according to the example. The bottom can be made thinner than conventional aerosol cans. Further, by reducing the thickness of the can body and the can bottom, it is possible to reduce the weight and the production cost.

The present invention is not limited to the aluminum alloys according to the embodiments, and other 3000 series aluminum alloys such as JIS or AA standard 3104, 3015, 3105 may be used. Good. It goes without saying that the can material can be appropriately changed according to the desired chemical composition or mechanical properties.

Further, when the can body of the aerosol can according to the present invention, which has been once formed by impact molding, is subjected to ironing processing (ioning processing) and impact impact molding is used for molding, scratches on the surface of the can can be erased during the ironing processing. ,
The surface of the aerosol can becomes smooth and the thickness of the can body can be further reduced.

[0013]

As described above, according to the present invention, it is possible to improve the buckling strength and pressure resistance of an aluminum alloy container such as an aerosol can.
It is possible to reduce the thickness and weight of the aluminum alloy container and reduce the production cost.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideaki Nakano Inventor Hideaki Nakano 6-4 Minamihonmachi, Itami City, Hyogo Prefecture Nihon Rolling Industry Co., Ltd. (72) Inori Inori Yoshimura Tamura 6-6 Minamihonmachi, Itami City, Hyogo Prefecture Address No. 6 in Nihon Rolling Industry Co.

Claims (2)

[Claims] 1. An aluminum alloy container characterized in that a 3000 series aluminum alloy is used as a material for the container obtained by impact molding or impact ironing molding. 2. The material of the container obtained by impact molding or impact ironing molding is Si 0.60.
wt% or less, Fe 0.70 wt% or less, Cu 0.3
0 wt% or less, Mn 0.25 to 1.50 wt%, Mg
The aluminum alloy according to claim 1, comprising 0.20 to 1.50 wt%, Zn 0.40 wt% or less, and the balance Al.