JPS6034841A - Composite metallic plate and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to composite metal plates bonded together using an anaerobic adhesive and a method for manufacturing the same.

Corrosion resistance, hardness, beauty! It is well known that various metals or alloys are combined in order to provide metals or alloys with excellent properties such as metals or alloys, or to obtain materials with excellent mechanical properties. Various adhesives are generally used to bond metal or alloy materials together.

Plywood technology using a polymerizable adhesive by irradiation with UV or electron beams is common, but it cannot be used with metals that are impermeable to UV or electron beams. When using hot-melt adhesives, it is difficult to reduce the thickness of the bonded portion, and furthermore, if the line speed is increased, it is impossible to reduce the thickness. The use of short-time adhesives has strict acceptance conditions for coating equipment, and it is impossible to design equipment within a common sense range. Trouble is not allowed. In addition, when using pressure-sensitive adhesives, almost all conditions for the product (shape, dimensions) must be prepared at the moment of one layering, which poses many difficulties in line design. It is preventing the development of

Due to the above and various other factors, plywood with an extremely thin bonded part, that is, practically no thickness (for example, in the range of 2 to 20 mm), is processed at high speed (for example, 300 m/l 1 inch) while still in a coiled state. It was impossible to firmly bond in-line without uneven thickness or sheet deviation by crimping. Additionally, the more functions a typical processing line has in succession, the more likely troubles will occur, and the line speed will fluctuate each time, causing the line to stop in some cases. With conventional bonding techniques, the entire device and the product being processed become stuck, causing major trouble.

Therefore, an object of the present invention is to provide a composite metal plate bonded with an anaerobic adhesive that is easy to handle, allows selection of curing time, and has excellent heat resistance, solvent resistance, oil resistance, etc. It is in.

Another object of the present invention is to provide a method for manufacturing a composite metal plate that has a thin adhesive film and can be manufactured at high speed in an integrated manner.

According to the present invention, all types of composite metal plates with high peel strength and excellent workability, such as stainless steel, aluminum steel, titanium steel, bronze steel, stainless steel and aluminum, etc. can be used. It can be easily obtained by coating with a thin film of anaerobic adhesive.

The adhesive used in manufacturing the composite metal plate of the present invention is an anaerobic adhesive. An anaerobic adhesive is a polymerizable composition that maintains a liquid state in the air and hardens when the air is blocked, and is used for adhesion and sealing.

Some typical anaerobic adhesives are listed below.

(1) Tetraethylene glycol dimethacrylate etc. CH3G) 13 1 CH2= C-Coo (CH2CH20 various QC-C=C
H2 (11=1 to 10) When this is left in a state where it is not exposed to air, polymerization occurs, and the entire polymer turns into a solid polymer, which plays the role of filling and adhering to the adherend. This polymerization is promoted by a catalyst such as iron and is performed at room temperature for 12 hours, at 212'F for 10 minutes, and in 3507 for 5
Hardens in minutes. This product is stable for about a year if half of it is placed in a container that does not allow light to pass through, so there is no need to consider the bottling life. In addition, CuC12(H20)ffl(U
)1 Copper salts represented by (U is urea or its N-alkyl substituted product), hypochlorous acid, potassium bromate, HGI
Addition of a chloride mixture such as chloride gives a fast curing anaerobic composition.

(2) Mixture of liquid monomers A and B (A) c)+3 CH2= C-000(CH2CH20u7H(n=
1-4) (B) CH3 CH2=C-COO-+ CH2CH20+ii-R(
m=1-10) (3) The following structure added with cumene hydroperoxide and triethylamine CH3 CH2= C-GOOR, R= CH2CH20H.

CH2CH2NHCa +19 There are various other combinations of monomer structures, catalysts, and promoters, but dimethacrylate as an anaerobic adhesive turns into a thermosetting polymer when polymerized, so it has excellent heat resistance, solvent resistance, and oil resistance. . This is of practical importance.

In addition, some monomethacrylates exhibit similar curing, and since these provide thermoplastic polymers, the use of both of them can further increase practical convenience.

The type and thickness of the metal or alloy plates bonded together using such an anaerobic adhesive are arbitrary depending on the intended use. Furthermore, it goes without saying that the metal or alloy plates of the same or different types can be laminated not only in two layers but also in three or more layers as needed.

Now, a method for manufacturing composite metal plates bonded together using the above-mentioned anaerobic adhesive will be described below.

The metal or alloy plates (strips) to be bonded are cleaned in advance. Next, a predetermined amount of liquid anaerobic adhesive is applied to the surface of the metal or alloy plate to be bonded by a suitable means such as a spray, a bar coater, or a roll coater. In the subsequent steps, the following steps are selectively performed.

(1) Adhesion step After applying the anaerobic adhesive, the surfaces of the metal or alloy materials to be bonded are bonded together. In this step, the following (2) and (3) can be selectively performed as necessary.

(2) Pressure process If there is a risk that the bonding force (deaeration) may be insufficient during bonding, or if you want to appropriately control the thickness of the adhesive, apply appropriate pressure by passing it through a roll etc. Pressure treatment is performed.

(3) Rolling process If the thickness of the bonded metal or alloy plate is to be controlled to an appropriate thickness after bonding, rolling is performed at an appropriately selected rolling reduction rate.

The bonding process described in (1) above can be selectively performed by the pressing process (2) or the rolling process (3) as necessary. After the adhesive is applied, the adhesive gradually polymerizes and hardens in areas where it is sealed between the bonded metal or alloy plates and is completely blocked from air. However, the adhesive does not polymerize and harden at the edge of the bonded metal or alloy plates because they are still in contact with air.

For this reason, when attempting to polymerize and harden the adhesive at the free end, it is necessary to seal the free end for a required period of time or to polymerize and harden the adhesive.

(4) Adhesion treatment process of free end portion The free end portion of the bonded metal or alloy plate is kept in a deaerated state, or the free end portion is irradiated with υV to polymerize and harden the adhesive on the free end portion. Perform free end adhesive treatment.

This step can be selectively added before or after the steps (2) to (3) described above. By this process of bonding the free end portions, the free end portions of the metal or alloy plates are also completely bonded by polymerization and hardening, so it is possible to manufacture a composite metal plate without any wasted parts.

Next, a representative example of the continuous and high-speed manufacturing method of a composite metal plate according to the present invention is shown in the accompanying drawings. Although the illustrated example is for bonding two metal or alloy plates (strips) together, it is of course possible to bond a larger number of metal or alloy plates simultaneously or sequentially. .

Metal or alloy plate 2 fed out from payoff reel l
passes through a pinch roll 3, a dancing roll 4, and a cleaner 5, and then enters an anaerobic adhesive application chamber 6. Inside the anaerobic adhesive application chamber 6, adhesive pressurized by a pump 7 is sprayed from a nozzle 8. The metal or alloy plates coated with the adhesive in the coating chamber 6 are bonded by the controller 9. As described above, in this bonding process, pressing treatment at a predetermined pressure or rolling treatment at a predetermined reduction rate can be performed by appropriate means.

The bonded metal or alloy plate, that is, the composite plate 10,
The free end portion passes through the degassing sealing means 11 to promote polymerization and curing of the adhesive at the free end portion, and then is introduced into the UV lamp house 12. In the UV lamp house 12, the composite board IO is irradiated with UV rays to further accelerate the curing of the adhesive (for example, it hardens in about 0.2 seconds).

The composite plate 10 is then subjected to appropriate post-treatment and wound onto a winding roll 13. In this way, composite metal plates can be manufactured continuously at high speed on a line that incorporates all processes at high speed using an anaerobic adhesive, something that has not been possible in the past.

Hereinafter, the present invention will be specifically explained with reference to examples.

[Example 1] One sheet of bonding material was manufactured between a general cold-rolled steel sheet having a base material of 0.8 rnrs thickness and several types of different thicknesses (0, 1, 0, 05, 0,015 ff1m).

Base material used: Cold rolled steel plate, plate thickness 9.8 am, surface dull finish roughness 4IL Surface material: Al plate, plate thickness 0.015 amo, 05
Q, 5 mm Surface matte finish Adhesive material: Anaerobic adhesive (modified product of Seal End's Lock End) Base treatment material: Titanate coupling material AI 0.1
To join the +in material, apply a pressure of lOOOKg/am2, and immediately after applying the adhesive, the free end is
An effective method was to bend and fix the material to the edge of the nI material using a homing roller. According to this, a good air-blocking state could be obtained regardless of the plate thickness or the viscosity of the adhesive. In this method, the first homing roller 20
1 and the surface material 22 were pressed, and then the free end portion 24 of the surface material was passed around to the back side of the base material by the second homing roller 23 and fixed.

For bonding one 0.05 +wm thick A plate, the method using a homing roller is of course effective, but if the viscosity of the adhesive is 200cps/20°C or higher, only crimping and no other operations are required. A good end face was obtained without separating the TL (Fig. 3).

As a further attempt, IKW/c
It was more perfect if the mixture was irradiated with m, then wound into a coil while still in a thickened state, and the ends were kept pressed.

The 0.015 mm thick 8-height plate does not require any special consideration such as a degassing seal on the free end for hardening, but it is fixed by UV irradiation to prevent damage during cleaning and edge cleaning before winding. was valid.

In the above implementation, the bonding strength was increased by increasing the pressure until the rough surface of the base material was printed on the board surface, and therefore the adhesive strength increased, so processing was performed mainly at around 1000 Kg/cm2. As a result, the end test piece of 0.015 mm Al plate was
In the T-peel test, part A1 was cut and adhered to an extent that could not be measured. Moreover, the 0.05■ tungsten aluminum plate showed adhesive strength to the extent that it could be peeled off.

0, I IIm Al plate has T-type peeling M strength of 4 Kg/
25 am. In other words, by the final method, 0.05
By bonding Al plates with m or less layers, it is practically possible to manufacture a composite iron plate without fear of continuous peeling from the edge.

[Example 2] A composite iron plate was manufactured using a general cold-rolled steel plate and a galvanized iron plate (thickness 0.8 mm) as base materials and a sintered copper plate (thickness 0.05 am) as a surface material.

Base material used: cold rolled steel plate, plate thickness 0.8 mts 3 types 11
Surface dull finish finish degree 1.3 2, surface dull finish roughness 4 pL 3, sandblast finish roughness 1O final galvanized iron plate, plate thickness 0.8 rinm Surface material: sintered copper plate plate thickness 0.05 TS welding
Adhesive material: Anaerobic adhesive (modified product of Seal End Co., Ltd.'s Lock End) Base treatment material: Titanate coupling material As shown in Figure 1, immediately after crimping with the upper and lower rolls, the edges are degassed and sealed. A method of enclosing and fixing the end face of the base material using a homing roller (Fig. 2) was used. In crimping, pressure is applied at the same time as the adhesive is applied with the aim of completely degassing between the board surfaces.The pressure is increased to dramatically improve the adhesive strength, and the roughness of the base material surface is used to increase the adhesion of the surface material. The pressure was increased until the phenomenon of printing on the surface occurred. This is 370Kg/cm2 and l
Two cases of OOOKg/cm2 were carried out. As a result, as shown in FIG. 5, the higher the pressing force, the better the results were obtained.

The crimping speed is 300 m/ll1n and 10 m/w.
Although we used a low speed of 50cps/20"C, if a low viscosity adhesive of 50cps/20"C is selected, the adhesive application and the surface roughness printing phenomenon of the base material on the surface material will be perfect and will not change, which will affect the adhesive strength. As a result, in the case of a base material with a surface roughness of 10 wells, a composite steel plate with a shear strength of 200 Kg/cm2 and an average peel strength of 5 Kg/25 m+5 (over 13) was obtained (Figs. 4 and 6). (See figure).Here, further increase the crimp force to about 60
The pressure was increased to 0.00 Kg/cm2, and a pressure-welded composite steel plate was manufactured. During crimping, the bonding material was elongated by about 5%, resulting in a so-called rolled state.

In addition to the above-mentioned process, the processing process involves polishing the metal surface with a rotating wire brush while applying an anaerobic adhesive (viscosity 50 cps/20°C) to both surfaces to be welded together. A device was added to clean the material and apply it to the surface, and the joint was carried out by rolling and pressure bonding. Under these conditions, the surface material (copper plate with a thickness of 0.05 am)
0.8ra ■ thick galvanized iron plate) was confirmed to have local pressure contact distributed over the entire surface, and 300 to 900 kg/cm2
Tensile shear strength of 1000 Kg/c
Compared to the +w2 case, we were able to obtain an average high score in all performances.

In the above manner, the composite steel plate obtained by applying a pressure of 1000 Kg/cm2 or more can have an extremely thin adhesive part in the intermediate layer <IJL or less, and the degree of contact between the metal surfaces is low. This resulted in plywood with extremely high adhesion, which is difficult to obtain with other methods. This plywood had high shear strength at the joint surface and had sufficient performance in terms of ia function, mechanical strength, and corrosion resistance necessary for various homing operations.

[Brief explanation of the drawing]

Fig. 1 is a diagram of a line for continuously manufacturing the composite metal plate of the present invention using an anaerobic adhesive, Fig. 2 is a diagram showing the state in which the free end is sealed by a homing roller, and Fig. 3 is a diagram showing the state in which the free end is sealed by a homing roller. A graph showing the limits of surface material thickness and viscosity of adhesive for successful adhesion based on edge treatment. Figure 4 is a graph showing the relationship between surface roughness and shear strength. Figure 5 is a graph showing the relationship between pressure bonding force and peel strength. The graph shown in FIG. 6 is a graph showing the relationship between the surface roughness of the base material and the effect of pressure bonding force on peel strength. Explanation of symbols 1...Payoff reel, 2...Metal or alloy plate (
? tF), 3... Vinci roll, 4... Dancing roll, 5... Cleaner, 6... Anaerobic adhesive application chamber, 7... Pump, 8... Nozzle, 9... Controller, 10... Composite board, 11... Deaeration sealing means, 12... T+V lamp house, 13... Winding roll, 20.23... Homing roller, 21...
Base material, 22...Surface material, 24...Surface material free end patent applicant Kawasaki Steel Co., Ltd.

Claims (7)

[Claims] (1) &)! A composite metal plate characterized in that a temperable adhesive is applied to at least one surface of the metal or alloy plate to be composited, and the metal or alloy plate is adhered so that the adhesive forms an intermediate layer. (2) Apply an anaerobic adhesive to the surface of the pre-cleaned metal or alloy plate to be bonded, and after applying the adhesive, degas the metal or alloy plate by applying pressure. A method for producing a composite metal plate characterized by joining. (3) Applying an anaerobic adhesive to the bonding surface of the metal or alloy plate to be composited which has been previously cleaned, and after applying the adhesive, rolling the metal or alloy plate at a predetermined rolling reduction rate. A method for manufacturing a composite metal plate, characterized by performing degassing bonding under a crimping condition. (4) Apply an anaerobic adhesive to the surface of the pre-cleaned metal or alloy plate to be bonded, and after applying the adhesive, bond the metal or alloy plate to the bonded metal or alloy. The free end portion of the plate is subjected to free end bonding treatment to promote polymerization of the adhesive at the free end portion, and then the composite metal or alloy plate is degassed and joined by pressure treatment. A method for manufacturing a composite metal plate. (5) Apply an anaerobic adhesive to the surface of the pre-cleaned metal or alloy plate to be bonded, and after applying the adhesive, bond the metal or alloy plate to the bonded metal or alloy. The free end portion of the plate is subjected to free end adhesion treatment to promote polymerization of the adhesive at the free end portion, and then the composite metal or alloy plate is rolled at a predetermined rolling reduction rate under a rolling condition of 7f. A method for manufacturing a composite metal plate, characterized by degassed bonding. (6) Applying an anaerobic adhesive to the surface of a metal or alloy plate to be composited which has been previously cleaned, and after applying the adhesive, pressurizing the metal or alloy plate, and then applying the adhesive to the metal or alloy plate. A method for manufacturing a composite metal plate, characterized in that the free end portions of the composite metal plates are bonded by subjecting the free end portions to a free end adhesive treatment to promote polymerization of the adhesive at the free end portions. (7) Applying an anaerobic adhesive to the surface of the metal or alloy plate to be composited which has been subjected to a clearing treatment in advance, and after applying the adhesive, rolling the metal or alloy plate at a predetermined rolling reduction rate. . A method for manufacturing a composite metal plate, characterized in that the free end portions of the metal or alloy plates are then bonded by subjecting the free end portions to a free end bonding treatment to promote polymerization of the adhesive at the free end portions.