JPH05495A - Method for processing composite metal sheet - Google Patents

Abstract

PURPOSE:To get rid of delamination of sheets of a composite metal sheet by making a sheet of the outermost layer of a laminated composite metal sheet longer than another laminated sheet and bending this part to the side of the other laminated sheet and envelopping it therewith. CONSTITUTION:An outermost sheet 1 of a composite metal sheet A is made longer than another laminated sheet 2 and this longer part is molded so as to make it to be a bent part 5 to the side of the other laminated sheet 2. There is no possibility thereby that an adhesive 4 is exposed from the end face of the sheet of the composite metal sheet A and there is no possibility that the sheet is delaminated even if adhesive strength of the adhesive 4 is small and furthermore, the sheet is not delaminated even if it is heated at high temp. for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a composite metal plate, and more specifically, a vibration-damping composite metal plate or a lightweight laminated metal plate in which a plurality of metal plates are laminated by adhering with an adhesive such as resin. The present invention relates to a method for processing a composite metal plate of.

[0002]

2. Description of the Related Art In general, when manufacturing a structure using a composite metal plate, the end face of the composite metal plate is not processed. Therefore, in general, the end face of the composite metal plate is left as it is, spot welding is performed in the vicinity of the end face of the composite metal plate to prevent separation of the plate of the composite metal plate, or with other parts. The present situation is that the vicinity of the plate end surface of the composite metal plate is restricted by bolts or the like for joining.

However, until now, a composite metal plate adhered with a resin as an adhesive has been used in a state in which the end face is cut like a plate, a resin, and a plate. There is a problem. That is, (1) When the end surface of the composite metal plate collides with another object or the end surface is lightly processed, the laminated plate of the composite metal plate is deformed and the plates are separated. (2) Since the end surface of the composite metal plate comes into contact with a liquid such as water, oil, or a chemical, the adhesive force of the resin as the adhesive decreases. (3) When the end surface of the composite metal plate is exposed to a liquid such as water, oil or chemicals, the resin as the adhesive dissolves and flows out. (4) When the composite metal plate is heated, the resin as the adhesive melts and bleeds from the end surface of the composite metal plate. (5) When the composite metal plate is heated to a high temperature for a long time,
The plates forming the composite metal plate are peeled off. Etc.

If the bonding strength is small, such as a vibration-damping composite metal plate having extremely high vibration-damping characteristics, the problem of plate peeling as described in (1) above occurs, so spot welding must be performed. It must be.

Further, as a method of using the composite metal plate, when the plate end surface comes into contact with various solutions, the problems as described in (2) and (3) above occur, so that the composite metal plate is used. Since the application is naturally limited, it is a great obstacle to practical use.

[0006] After the composite metal plate is processed, a baking coating is usually performed, but at this time, since it is heated to a high temperature for a long time, the problems (4) and (5) described above occur. Therefore, there is a strong demand for development of a technique for solving such a problem.

[0007]

As described above, the present invention has been made by the present inventor after earnest research and studies in view of various problems in the conventional composite metal plate. We have developed a method for processing a composite metal plate that does not peel off the plate, does not dissolve the adhesive in a solution of water, oil, chemicals, etc., and does not peel off due to the melting of the adhesive even when treated at high temperature.

[0008]

A feature of the method for processing a composite metal sheet according to the present invention is that the outermost plate of the composite metal sheets to be laminated has a shape longer than other laminated sheets, This is to form the outermost layer, which is longer than the other laminated plate, by bending it toward the other laminated plate to wrap it.

The method of processing the composite metal sheet according to the present invention will be described in detail below.

That is, in the method for processing a composite metal plate according to the present invention, as shown in FIG. 4, the outermost plate 1 of the composite metal plate A is made longer than the other laminated plates 2, and the outermost layer is formed. The long portion 3 (see FIG. 2) of the plate 1 is formed on the other laminated plate 2 side so as to form the bent portion 5. By doing so, the adhesive (resin) 4 is not exposed from the plate end surface of the composite metal plate A, and the plate is not peeled off even if the adhesive strength of the adhesive 4 is small.

FIG. 1 shows the effect of the method for processing a composite metal plate according to the present invention, that is, a plate thickness of 0.4 / 0.4 m.
In the vibration-damped composite metal steel sheet of m, the longest outermost layer 3 (see FIG. 4) for wrapping the other laminated plate by bending the plate end face of the composite metal sheet by the longest part of the outermost plate is provided. 1) is 2.0 times the total plate thickness (t) and 3.
The state of stripping when the hemming process was performed as 0 times and the heat treatment was performed at 180 ° C. for 30 minutes in comparison with the case where the end face of the composite metal plate was not treated (l / t = 0) Is.

As is apparent from FIG. 1, the composite metal plate processing method according to the present invention has a great effect on plate separation. In addition, 220 ℃
No peeling of the plate was observed even after heating at a high temperature of × 60 minutes for a long time.

[0013]

[Examples] Examples of the method for processing a composite metal sheet according to the present invention will be described.

[0014]

[Example 1] This example 1 is a laminating → roll forming method. When laminating a metal coil having a plate thickness of 0.4 / 0.4 mm, as shown in Fig. 4, the outermost layer of the composite metal plate is formed. The laminated plate was formed into a shape having a portion longer than the other laminated plates, and the long portion of the outermost layer was bent by roll forming to wrap the other laminated plate as shown in FIG. In this case, the end faces are still bent, but depending on the application, the plates may be welded to each other or may be used by being bonded with a resin having excellent heat resistance and chemical resistance.

[0015]

[Embodiment 2] This embodiment 2 is a slitting → hemming processing method. As shown in FIG. 3, a roll 6 with a cutting blade 7 is used to form a vibration-damping composite metal sheet A having a thickness of 0.3 / 0.45 mm.
Slit processing was performed. This cutting blade 7 is a parting type,
It may be a cutting type or the like, and by this, the end face of the composite metal plate as shown in FIG. 4 can be formed, and then the plate end face is processed by a press machine as shown in FIG.

[0016]

[Practical example 3] This example 3 is a shearing-> hemming method, in which an aluminum plate Al having a plate thickness of 0.5 mm and a stainless steel plate S having a plate thickness of 0.2 mm are bonded with a resin having a thickness of 0.1 mm. The composite metal plate was sheared as shown in FIG. 5 to have an end face shape as shown in FIG. Since it is usually difficult to form the end face as shown in FIG. 4 in this shearing, the clearance C is set to 150 μm, which is three times the normal, and the roundness of the cutting blade 8 on the stainless steel plate S side is increased. There is. Therefore, the aluminum plate A
Only l is cut and the stainless steel plate S remains uncut. In this case, since the stainless steel plate S is squeezed between the cutting blades 8, the resin P separates from the stainless steel plate S. Then, this is subjected to hemming processing to be processed as shown in FIG.

[0017]

[Example 4] Example 4 is a laser cutting-> hemming method, in which a sandwich-shaped vibration-damping composite metal is formed by bonding a steel plate having a plate thickness of 1.2 mm and a plate thickness of 0.4 mm with a vibration-damping resin of 50 μm. In the plate, only a steel plate having a plate thickness of 1.2 mm was cut by a laser beam at a position 4 mm from the end of the composite metal plate. Then, the remaining steel plate having a plate thickness of 0.4 mm was subjected to a hemming process so as to wrap the plate end face as shown in FIG.

[0018]

As described above, since the method for processing a composite metal sheet according to the present invention has the above-mentioned constitution, the end surface of the composite metal sheet is covered by the outermost laminated plate of the composite metal sheet so as to be covered. Therefore, the adhesive strength of the composite metal plate is small, lack of solvent resistance, chemical resistance, oil resistance, etc., and further various defects of the resin as an adhesive such as poor heat resistance are completely eliminated. It has the effect of eliminating it.

[Brief description of drawings]

FIG. 1 is a diagram showing a ratio of a length portion of an outermost layer of a composite metal plate to a total thickness of the composite metal plate and a peeled state of the composite metal plate.

FIG. 2 is a schematic cross-sectional view of a composite metal plate manufactured by the method for processing a composite metal plate according to the present invention.

FIG. 3 is a schematic cross-sectional view showing a means for making the outermost layer of the composite metal plate longer than other laminated plates.

FIG. 4 is a schematic cross-sectional view showing the relationship between the length of the outermost layer of the composite metal plate and other laminated plates.

FIG. 5 is a schematic cross-sectional view showing a means for making the length portion of the outermost layer of the composite metal plate longer than other laminated plates.

[Explanation of symbols]

 1 ... Outermost layer laminated plate of composite metal plate 2 ... Other laminated plate of composite metal plate 3 ... Outermost layer length part (l) 4 ... Adhesive (resin) 5 ... -Bending part 6 ... Roll with cutting blade 7 ... Cutting blade 8 ... Shear A ... Composite metal plate C ... Clearance Al ... Aluminum plate S ... Stainless steel plate t ... Composite Total thickness of metal plate

Claims (1)

Claim: What is claimed is: 1. An outermost plate of a laminated composite metal plate is formed to have a shape longer than other laminated plates, and a portion of the outermost layer longer than the other laminated plate is formed into another laminated plate. A method for processing a composite metal sheet, which comprises bending the sheet to a sheet side and forming the sheet so as to wrap it.