JPH01205052A - Aluminum alloy material for blind - Google Patents

Abstract

PURPOSE:To obtain the title material having excellent formability and excellent strength after paint baking by adding and incorporating specific amounts of Si, Fe, Cu, Mn, Mg and Zn to Al. CONSTITUTION:The ingot of the Al alloy contg., by weight, 0.1-1.2% Si, 0.1-1.2% Fe, 0.1-1.5% Cu, 0.1-1.0% Mn, 0.2-1.5% Mg and 0.2-1.8% Zn is subjected to a homogenizing treatment, is thereafter subjected to hot rolling and cold rolling and is worked into a plate material. The Al alloy plate material is successively subjected to an annealing treatment, is thereafter cold-rolled to the final plate thickness into the shape of a thin plate and is subjected to heating at 120 deg.C and a stabilizing treatment, by which the Al alloy thin plate material for a blind having excellent strength after paint baking without impairing its formability can be manufactured.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an aluminum alloy material that undergoes a baking coating process, such as a blind, and more specifically, it can be easily manufactured, and can be easily produced after the baking process without impairing formability. The present invention also relates to an aluminum alloy material having high strength.

(Prior art) JIS5052 is used for conventional aluminum alloys for
．． 5083.5086 etc. A-Mg alloy plate thickness 0.
1 to 0.21 thin plates are used. In the manufacturing process of blinds, these aluminum materials are
Baking is done under the conditions of 0.5 to 3 minutes at 0℃, and after applying the coating, roll forming is applied to form a radius as shown in Figure 1, or after performing roll forming, baking is applied. It is then stored in a coiled form and cut into products as needed. In FIG. 1, 1 is a molded blind material made of aluminum alloy.

(Problem to be solved by the invention) If the strength of the blind material, especially the baking strength, is low after painting, it may cause a second problem when it is made into a coil shape after roll forming.
As shown in FIG. 2, the warpage becomes large, and as shown in FIG. 3, the amount of change in arrow height becomes large, making it unsuitable as a product. There is also a strong demand for weight reduction and cost reduction, and for this reason, there has been a desire to develop materials with high strength, especially in terms of baking strength, after painting. Therefore, various new high-strength alloys are being developed.

However, these new alloys have problems such as not having sufficient strength or being too strong to be formed during roll forming, and have not been able to provide satisfactory properties.

Therefore, an object of the present invention is to provide an aluminum alloy with high strength after baking and painting without impairing formability.

(Means for Solving the Problems) The present inventors have completed the present invention as a result of extensive and detailed studies on the influence of alloying elements on the properties of Al-Mg-Mn-based alloys.

That is, in the present invention, S i 0.1 to 1.2 wt%
(Hereinafter, wt% is simply written as %), Fe 0.1~
1.2%, Cu 0.1-1.5%, Mn
0.1-1.0%, Mg0.2-I, 5%,
The present invention provides an aluminum alloy material for blinds, which is characterized in that it contains 0.2 to 1.8 wt% of Zn, and the remainder is aluminum and unavoidable impurities.

The reasons for limiting the ingredients in the present invention will be described below.

The content of 11 containing 5i(7) is 0.1 to 1.2%. sl
Along with Mg, fine precipitates of M g z S 1 are produced during coating, which contributes to improving the strength of the material. S
If the content of i is less than 0.1%, this effect is not sufficient, and if it exceeds 1.2%, the moldability deteriorates.

The Fe content -1 is set to 0.1 to 1.2%. Fe is AJ
It has the effect of producing I-Fe-based or An-Fe-Si-based compounds and making the recrystallized grains of the material finer, thereby improving the formability of the material. If the Fe content is less than 0.1%, this effect will not be sufficient, and if it exceeds 1.2%, there is a high risk that coarse crystallized substances will be produced and the ductility and formability will deteriorate.

The content of Cu is 0.1 to 1.5%. Cu is Al-
Along with Cu-based and Mg-based precipitates, Cu--Mg based precipitates occur during coating and contribute to the strength of the material. C
If the u content is less than 0.1%, this effect will not be sufficient, and if it exceeds 1.5%, the strength will be too high and the ductility and formability will deteriorate.

The content of Mn is set at 0.1 to 1.0%. Mn is a sentence.
A Mn-based compound or an Al-Mn-3i-based compound is produced to refine the recrystallized grains of the material, thereby improving the formability of the material and improving its strength. Mn content is 0.1
If it is less than 1.0%, this effect will not be sufficient, and if it exceeds 1.0%, there is a high risk that coarse crystallized substances will be formed and the ductility and formability will deteriorate.

The content of Mg is 0.2 to 1.5%. Mg bakes the aforementioned AM-Mg-Si type, An-Cu-Mg type, etc. precipitates during coating and improves strength, and also dissolves in the matrix to improve formability and strength. M
If the content of g is less than 0.2%, these effects will not be sufficient, and if it exceeds 1.5%, the strength will become too high and the ductility and formability will deteriorate.

The content of Zn is 0.2 to 1.8%. Zn mainly dissolves in solid solution in the matrix and improves the formability of the material, and baking produces precipitates of Al-Mg-Zn during coating, contributing to improvement in strength. If the Zn content is much less than 0.2%, these effects will not be sufficient;
If it exceeds 8%, the corrosion resistance of the material will deteriorate.

Other unavoidable impurities may be contained within a range that does not affect the properties of the material of the present invention, and it is usually 0.20% for products.
It is as follows. It is desirable that each of these impurity elements be 0.15% or less.

Note that the material of the present invention can be manufactured by a conventional method.

(Example) Next, the present invention will be explained in more detail based on examples.

Example An alloy having the composition shown in Table 1 was melted and DCPJ' by a conventional method.
An ingot of JXi Schiff 0x200II11 was obtained. This is 5
A homogenization treatment was performed at 50° C. for 4 hours, and a plate material with a thickness of 1.4 ms was obtained by hot rolling and cold rolling. This plate material was annealed at 350° C. for 4 hours and then cold rolled into a plate material with a thickness of 0.15 layers. This plate material was subjected to stabilization treatment for 120°CXt hours. The mechanical properties of these test materials as they were (base plate) and after being subjected to heat treatment at 200°C for 2 minutes assuming baking painting were measured by a tensile test. The results are shown in Table 2.

/ As is clear from the results in Table 1 and Table 2, the aluminum alloy plate samples (Nos. 1 to 5) according to the present invention had excellent mechanical properties (tensile strength, yield strength) even as a blank plate.

elongation), and this property is maintained without being impaired even by heat treatment equivalent to baking coating.

On the other hand, the comparative samples (Nos. 6 to 9) have inferior properties (especially elongation) as blank plates, and their strength is further reduced by heat treatment.

(Effects of the Invention) As described above, according to the present invention, it is possible to provide an aluminum alloy material for blinds with high strength without reducing formability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a molded aluminum alloy blind material, FIG. 2 is a perspective view of a deformed blind material, and FIG. 3 is an explanatory diagram of the arrow height of the blind material. Explanation of symbols i--Aluminum alloy molded blind material 2...
Modified blind material, 3...Blind material Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) Si0.1-1.2wt%, Fe0.1-1.2
wt%, Cu0.1-1.5wt%, Mn0.1-1.
0wt%, Mg0.2-1.5wt%, Zn0.2-1
．． An aluminum alloy material for blinds, characterized in that the aluminum alloy material contains 8 wt% and the remainder is aluminum and unavoidable impurities.