JPS58179582A - Production of aluminum coated steel plate - Google Patents

Abstract

PURPOSE:To obtain an aluminum-coated steel plate having excellent corrosion resistance and workability, by press-sticking aluminum foil applied continuously with an ultrasonic wave to a heated steel plate in a reducing atmosphere. CONSTITUTION:Aluminum foil 4 of which the oxidized film on the surface is broken down by the ultrasonic wave applied continuously from an ultrasonic oscillator 5 in a reducing atmosphere box 3 is press-stuck to both surfaces of a steel plate 1 heated to 300-650 deg.C in a heating furnace 2 by means of press sticking rolls 6. The oscillator 5 may be placed to face the steel plate through the foil 4 or ultrasonic revolving oscillators may be used for the rolls 6. In the latter case, pressurizing force may be insufficient; therefore, pressurizing rolls are provided separately to press-stick the foil to the steel plate.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a solid aluminum*WS plate having excellent monolithic properties and monopolistic strength (hereinafter referred to as adhesion).

Steel plates coated with aluminum with a value of 61 or aluminum have excellent eating properties, heat resistance, surface appearance, and other properties (coloring properties, electronic shielding properties, etc.), so they are suitable for use in 1g sweetfish and automobile S materials. Applications are expanding, mainly for sound.

Methods for manufacturing aluminum I [ffl or meji key plates such as There is. In the case of molten aluminum metal life chain plates, which can be easily mass-produced on an industrial scale, the plating can be removed by pressing the technique 1II141 to ensure sufficient plating adhesion through the formation and development of a steel-aluminum alloy layer. Due to iron eluted into the alonium plating bath and O impurity elements such as 8i added to the alonium plating bath for the purpose of suppressing the formation and development of an alloy layer, aluminum's inherent corrosion resistance is not fully demonstrated. JL just can't meet the needs of the market! Due to the extreme heat of the aluminum bath, there was a defect in the shape of the aluminum plate, which caused a thin plate (thickness: 0.
4- or less) is plated in 1 Qin, etc., in 6 colors. - In the case of 4 cases after 10,000 evaporation methods, etc., each technical interval I
In addition to this, mass production on an industrial scale has fatal disadvantages such as high costs due to crumbling of koji.For example, in recent years, crimping has been significantly commercialized on an industrial scale in various metal molding industries. Even in the case of manufacturing by the method, Al<=Rum is oxidized and has a saponification degree of 1:1 between the aluminum used as the coating material and the steel plate used as the core material.
1#I is interposed and maintains sufficient adhesion, but there is a drawback.

In response to this situation, the Ministry of Invention and others have developed a method for manufacturing Alum Australian bonds in large quantities on an industrial scale, which has various excellent characteristics.
As a result of our efforts in development, we discovered that an effective method is to apply ultra-t*tli1m to the aluminum foil used as the coating material in a reducing atmosphere to destroy the oxide skin, and then press it to a heated sheet. The present invention has led to the construction of a tube.

That is, the present invention is a method for producing an aluminum rim 61fIIJ4 board, in which the aluminum rim is added to a heated board in a super-tight manner in a reducing atmosphere, and then the aluminum rim is crimped. This is a method for manufacturing an aluminum plate with excellent corrosion resistance and workability that is durable.

The method of the present invention will be described in detail below.

Figure 1 is an example of the basic line configuration of the method of the present invention.
- Continuously adding p ultrasonic waves to mover 5 Table 11itI
The aluminum foil 4 with the t-treated film destroyed is heated to 21E in the heating furnace 2.
Both sides of the steel plate 10 are crimped using a crimping roll 6. Here, the superelectric tIL holder 5 may be inserted inward through the aluminum foil 4, or the pressure roll 6
[It is preferable to install the pressure roll 7 at the corner as shown in the figure, since the pressure force on K may be insufficient in this case.

The steel plate 0fIIA used in the present invention is a hot-rolled plate such as rimmed, aluminum killed, silicon killed, etc., and a heavy plate with an intermediate pressure of a to
n) % annealed steel plate, etc. - not limited in any way, but a heating furnace that becomes a clean surface after reduction. , electric furnace time, and temperature), ]! Since there are few restrictions such as the thickness of the satin plate, it is possible to produce ultra-thin (plate 3 IF 0.4- or less) aluminum plating, which was impossible with the conventional SIM aluminum plating method.
It is also easy to manufacture Niwamu coated plates. I! lJw1. It goes without saying that by using the conventional continuous annealing furnace t- as the heating FFi, the effects of the present invention tIk are greatly exhibited.

The aluminum foil with a clean surface used as a covering material has a thickness of about 50μ to 200μ, and the pure length is Jll! Il/& generally has good corrosion resistance, and the film thickness and composition of aluminum foil must be selected depending on the application.6% There are no particular limitations on film thickness or composition, but reducing properties of sm Aluminum that was destroyed by ultrasonic waves and wired by IIL Gakko in the air? Immediately, the material is pressed against the heated glass by a pressure roll. At this time, -plate Oi1
If the temperature is below 300℃, the thermal effect on crimping is small;
The melting point of Al<=Wa five crystals (approximately 650°C) f: If the S degree exceeds this, it will be difficult to perform slow-knitting monks' work, so the temperature of the steel plate should preferably be 300°C to 650°C. Here, the pressure roll 6t is used as a vibrator, and the effect in the next case is based on the increase in the destructive effect of oxidized Jil& and the microscopic melting of the O Al 1 surface layer in the wax contact with the plate due to JIl-Ying heat. The purpose is to improve the adhesion, and in this case, the super-ta processing machine using the super-acid wave roller is omitted, and 4jL, front, 1
10, because the pressing force is insufficient, 2 IIJ pressure rolls 7 are added separately.
is required.

1xJ8E using a pressure roll is an exaggeration from the point of view of adhesion, but OA rolling - skin pass Toguchiko (-Toru's rolling reduction rate of 1-31N) in plate O manufacturing is fine, but aluminum 111
16 The purpose of the board is that it is used for many purposes, and each has different characteristics such as g & Kyoto resistant characteristics, processability, adhesion, surface appearance, etc.). At the same time, it should be controlled (such as strong pressure when considering wood strength and adhesion). After pressure is applied from the 011 point, depending on the application, the iron-aluminium world self-diffuses. For the purpose of improving the layer density and removing distortion due to crimping, it is possible to diffuse the ventilation and apply a blunt hook.

Hereinafter, one method of misfire kl'P will be included in the examples.

EXAMPLE A single plate with a thickness of 60 μm was produced from an over-charged aluminum die using the apparatus shown in FIG. 1 and the production conditions shown in Table 1. 11@a, @.

And as a comparison, one plate of aSm+ of molten aluminum plated #A plate 0 made by a known method was used with a cup diameter of 6
5 bags, drawing ratio (can height/can diameter) α6, 9 bags 70
℃, under 98Xi [1] for 3 days, and the occurrence of red rust (corrosion resistance) and the control of the alkali electroplating or coating layer by taping (metal adhesion) were determined by the trTJ rate. From the results shown in the table, it can be seen that the steel plate prepared by the method of the present invention has excellent corrosion resistance and adhesiveness t''.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the line configuration of the method of the present invention. l;-band, 2; heating furnace, 3; reducing atmosphere i-x, 4
;Al 1 foil, 5;Supersonic wave insert, 6;Crimping roll or cell roll a! Vibrator, 7; pressure roll. Representative Patent Attorney Masamitsu Akizawa 92 people

Claims (1)

[Scope of Claims] (11) A method for manufacturing an aluminum FF1 plate, which involves heating an aluminum sheet under continuous application of ultrasonic waves and pressing it onto a plate in a reducing atmosphere. (2) O-plate 01if when crimping: #1300℃ or higher 650
℃ or less, the method for producing an aluminum coated thin plate according to item (1) of the patent claim.