KR101051325B1 - Reflow equipment and method for tin plating process treatment of metal plate - Google Patents

Abstract

The present invention relates to a reflow equipment and method for tin plating process treatment of a metal plate, and is installed between a tin plating process for tin plating and a water treatment tank; The first high frequency induction heater is installed so as to face both sides of the tin plate of the plated metal plate, which is transferred through the tin plating equipment, to generate the induction magnetic field by the arrangement of the electric coils. Wow; The metal is disposed under the first high frequency induction heater and installed to face both surfaces of the tin plated metal plate, which is transferred, and generates an induction magnetic field by the arrangement of the electric coils and the configuration of the core surrounding the electric coils. A second high frequency induction heater for secondary induction heating of the sheet; A reflow apparatus disposed below the second high frequency induction heater and installed so as to face both surfaces of the plated tin plate to be transported, and including an air cooler for supplying air to both surfaces of the plate. A technical configuration of the used reflow method is disclosed.

Metal plate, tin plating, reflow, induction heating, electric coil, core, air cooling, quality improvement, work environment improvement

Description

REFLOW APPARATUS AND METHOD FOR TINNING TREATMENT OF METAL PLATE}

The present invention relates to a reflow equipment and method for tin plating process treatment of a metal plate, more specifically using an induction heating method, to improve the quality, such as improved gloss in performing tin plating on the metal plate The present invention relates to a reflow apparatus and method for tin plating process treatment of a metal plate material to minimize material loss of the metal plate material during tin plating.

In general, a metal plate such as copper, iron, or the like is subjected to surface treatment such as tin plating on the surface to form gloss.

As described above, a tin plating system of a conventional metal sheet for plating tin on a metal sheet, an unwinding machine and a rewinding machine for supplying and rewinding a metal sheet are installed, and the unwinding and rewinding machine Tin plating line and heat treatment line are installed between them.

At this time, the tin plating line is a process step for plating tin on the surface of the metal plate material, the heat treatment line is a metal plate material such as strength reinforcement and polished by heat-treating the tin coated on the surface of the metal plate material using a heat source It is a process step to improve quality.

Here, the heat treatment line is a device for performing a process of heating and cooling heat in tin coated and coated on the surface of the metal plate, conventionally, a heating furnace for heat treatment and a water tank containing cooling water for cooling treatment are installed. The tin plated metal sheet is transferred by a feed roller to be heated and cooled through the heating furnace and the water bath.

However, in the conventional tin plating system of the metal plate material, the heating furnace, which is a heat treatment facility, uses a contact heating method such as an electric method using a change in electrical resistance or a method of heating by injecting gas. In the conventional application of this, there is a problem that temperature control is not easy, such as a fine adjustment of the temperature position in the furnace cannot be performed.

For this reason, if it is necessary to suddenly change the working conditions such as the instantaneous temperature rise / fall in the furnace, this could not be done properly, and the work must be stopped or an additional temperature controller must be installed for temperature control. There was this.

In addition, since the tin plated on the surface of the metal plate material is completely melted and deformed due to the difficulty in controlling the temperature, there is a problem in that the quality of tin plating is degraded and the material loss is increased, such as the metal plate material must be discarded.

Furthermore, since the heated metal sheet is quenched by passing it through a water bath containing cooling water, there is a problem in that a ripple pattern is displayed on the surface of the metal sheet by contact with the cooling water, and the tin plating coated on the metal sheet is heated and molten. Water quality penetrates into the gap, causing polka dots to appear on the surface, and roller traces of the transfer roller for the transfer processing of the metal plate are buried on the tin plated surface of the metal plate. As a result, improvements in tin plating are urgently required.

The present invention has been made to solve the above-mentioned conventional problems, by heating the surface of the tin plated metal plate using an induction heating method to fine-tune the temperature position or to adjust the temperature, such as instantaneous temperature rise / fall Easy to change the working conditions, as well as to improve the problems of quality deterioration, such as the appearance of wave marks, polka dots and roller marks caused by the existing quenching process It is an object of the present invention to provide a reflow apparatus and method for tin plating process treatment of a metal sheet.

In the present invention, the tin plating process of the metal plate material to improve the quality of the reflow process to improve the quality, such as gloss improvement and to minimize the material loss of the metal plate material during tin plating in performing tin plating on the metal plate material To provide reflow equipment and methods.

The present invention is installed between the tin plating equipment for tin plating and the cooling treatment tank, reflow for tin plating process treatment of the metal plate for performing a reflow process for heating the tin plate completed metal plate to be processed transfer In equipment;

The first high frequency induction heater is installed so as to face both sides of the tin plate of the plated metal plate, which is transferred through the tin plating equipment, to generate the induction magnetic field by the arrangement of the electric coils. Wow; The metal is disposed under the first high frequency induction heater and installed to face both surfaces of the tin plated metal plate, which is transferred, and generates an induction magnetic field by the arrangement of the electric coils and the configuration of the core surrounding the electric coils. A second high frequency induction heater for secondary induction heating of the sheet; It is disposed below the second high frequency induction heater and installed so as to face both sides of the tin plate is completed, the transfer plate is characterized in that it comprises an air cooler for supplying air to both sides of the metal plate.

In addition, the present invention is arranged up and down the high frequency induction heater having a coil method or a core method and through the metal plate member having a tin plated layer formed on the high frequency induction heater to conduct induction heating, but the secondary plating is applied to the tin plating layer of the metal plate member. A high frequency induction heating step of performing sequential induction heating in a third order; A ripple for tin plating process treatment of a metal plate including an air cooling step of air cooling the tin plated layer through an air supply by passing the metal plate having the tin plated layer in the induction heating state through the induction heating step through the air cooler. It features a low way.

The present invention heats the tin plated layer of the plated metal plate by using an induction heating method, so that it is possible to easily perform temperature control such as fine adjustment of the temperature position or instantaneous temperature rise / fall, thereby improving the working environment. In addition, by cooling the metal sheet in an induction heating state through the air supply in advance before the quenching step through contact with the cooling water, the surface gloss of the metal sheet is improved by tin plating as well as the reflow treatment of the existing tin plating. In this step, it is possible to eliminate the wave marks, polka dots and roller marks, which are frequently expressed in the tin plating layer of the metal sheet, thereby improving the quality deterioration caused by the tin plating of the metal sheet.

The present invention can increase the reflow treatment efficiency according to the tin plating, can maintain a uniform quality on the upper and lower surfaces of the tin plated metal plate material, it is possible to minimize the material loss of the metal plate material during tin plating by quality improvement.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the reflow apparatus 100 for tin plating process treatment of a metal sheet according to an embodiment of the present invention is to supply and rewind the metal sheet (MP) for tin plating and An unwinding machine 10, a rewinding machine 20, and a plurality of feed rollers 30 are installed for the transfer process, and the tin plating equipment 40 is disposed between the unwinding machine 10 and the rewinding machine 20. In the tin plating equipment of the metal plate is installed and the water tank 50 containing the cooling water, the tin plating is installed between the tin plating equipment 40 and the water tank 50, but passes through the tin plating equipment 40 It is configured to perform the reflow process through the non-contact heating by the high frequency induction heating to the completed metal plate (MP).

Specifically, it is installed between the tin plating equipment 40 and the water tank 50, the position to face both sides of the metal plate (MP) of the tin plating is transferred to pass through the tin plating equipment 40 is completed. The first high frequency induction heater 110 is installed to enable primary induction heating of the metal plate MP transferred through the generation of the induction magnetic field by the arrangement of the electric coil 111.

In this case, the first high frequency induction heater 110 to which the coil method is applied serves to uniformly heat the entire surface of the metal plate MP that is transferred at a predetermined speed.

Here, the first high frequency induction heater 110, which is installed vertically to face both surfaces of the metal plate MP, arranges the electric coil 111 to which a high frequency current is applied to the inner surface of the support plate 112. And, between the electric coil 111 is installed so that the metal plate material (MP) that the tin plating is completed to pass through.

In addition, the core 122 is disposed below the first high frequency induction heater 110 and is positioned to face both sides of the tin plate completed with the plated metal, which is transferred, and has the electric coil 121 wound thereon. The second high frequency induction heater 120 is installed so as to induce a secondary induction heating of the metal plate (MP) transferred through the generation of the induced magnetic field.

In this case, the second high frequency induction heater 120 to which the core method is applied is disposed by the core 122 in the electric coil 121 to intensify and concentrate the magnetic flux, thereby heating the metal plate MP transferred at a predetermined speed. It narrows the area and works intensively.

Here, the second high frequency induction heater 120 installed vertically to face both surfaces of the metal plate MP is an electric coil to which a high frequency current is applied to the core 122 to the inner surface of the support plate 123. The winding of the 121 is disposed, and the metal plate MP, which has been tin-plated, passes through the core 122 on which the electric coil 121 is wound.

The first high frequency induction heater (110) and the second high frequency induction heater (120) by adjusting the temperature position as well as by converting the output of the applied AC voltage to perform the efficient reflow process of the metal plate (MP) It is configured to easily control the temperature such as instantaneous temperature rise and fall, and each of them has a high power of 10kw to 150kw under high frequency of 500Hz to 3000Hz depending on the material conditions such as the material and thickness of the metal plate. If the output is less than 10kw, it is preferable that the output is less than 10kw, and no change in the structure such as melting occurs in the tin plating of the metal plate, so that there is no reflow treatment effect. Because of the above heating, there is a problem that the tin plating of the metal sheet melts completely and flows down or even the tin plating layer disappears. The.

The first high frequency induction heater 110 and the second high frequency induction heater 120 are connected to a cooling water supply hose 130 to supply cooling water such as water or distilled water to protect the heater thermally and mechanically. It is preferable to.

In other words, in the electric coil 111 of the first high frequency induction heater 110 and the electric coil 121 of the second high frequency induction heater 120, a heavy sharing path 111a and 121a are formed in each of them. And the cooling water supplied from the cooling water supply hose 130 through the hollow sharing paths 111a and 121a.

The first high frequency induction heater 110 and the second high frequency induction heater 120 are respectively installed facing both surfaces of the metal plate (MP), the handle to form a gear coupling with the support plates (112, 123). Is provided with a gap adjusting member 140 is connected to the metal plate material is applied to the tin plating by moving the support plate 112, 123 in the front and rear direction by adjusting the rotation of the handle of the gap adjusting member 140 It is preferable to configure so as to adjust the side spacing between the sides according to the thickness of (MP), various design and structural changes for the coupling of the gap adjusting member 140 may be performed.

Furthermore, an air cooler disposed below the second high frequency induction heater 120 and positioned to face both surfaces of the plated metal plate MP, which is transferred to the tin plate, to supply air to the metal plate MP. 150 is installed.

In this case, the air cooler 150 may be configured as a blower type air conditioner type or a line jet type air jet type.

The air cooler 150 may vary depending on the material or thickness of the metal plate (MP) or the heating conditions and the moving speed of the air cooler 150, but may be formed to supply air at a temperature condition of −15 ° C. to 15 ° C. When the temperature is less than -15 ° C, cracking or breaking occurs in the tin plating layer, and when the temperature exceeds 15 ° C, a problem of lowering the reflow effect through pre-cooling occurs.

Here, supplying air through the air cooler 150 is intended to not only crystallize the state of the structure change of the surface-coated tin plating from the metal plate (MP) heated by high frequency induction heating, but also to induce a cooling action. By performing the pre-cooling treatment to the metal plate material to prevent the condensation generated during the quenching process of the metal plate material through the water tank 50 containing the cooling water as well as to prevent the occurrence of cracks in the tin plating layer.

In addition, although not shown, a tin plated metal plate (MP) is further installed between the second high frequency induction heater 120 and the air cooler 150 by installing a third high frequency induction heater configured in a coil or core manner. ) Can be induced to 3rd induction heating process to better induce the reflow treatment efficiency of the tin plating plated on the metal plate. At this time, the third high frequency induction heater is applied with a high power of 10 kw to 150 kw in a state where a high frequency of 500 Hz to 3000 Hz is applied, depending on the material conditions and the thickness of the metal plate, and is provided with a gap adjusting member and cooling water is supplied. And the same conditions as those of the heater described above.

Here, if the economics of the reflow process are further considered, even the second induction heating may not only improve the problem of the existing quality deterioration but also improve the surface gloss by tin plating.

On the other hand, in the present invention, the installation order of the first high frequency induction heater 110 and the second high frequency induction heater 120 may be configured in a reverse order, and the installation order may be provided even when the third high frequency induction heater is added. Modifications to and modifications can be made, and such modifications and variations will fall within the scope of the spirit of the present invention.

Here, even if the modification and the deformation is made in the installation order of the high frequency induction heater, the main function of the coil method and the core method is applied to the metal plate without being changed. That is, in the high frequency induction heater, the coil method serves to uniformly heat the entire surface of the metal plate (MP), and the core method serves to concentrate heating while narrowing the heating area of the metal plate (MP). .

Referring to the operation and reflow process for the reflow equipment 100 for tin plating process treatment of the metal plate according to the present invention having the above-described configuration is as follows.

The metal plate MP, which is a base material, is transferred from the unwinding machine 10 to the rewinding machine 20, and the metal plate passes through the tin plating equipment 40 in the process of being transferred to the surface of the metal plate. ) Is followed by a plating process in which the coating is plated.

In this case, the metal plate (MP) is typically used a metal material such as copper (Cu), iron having a thickness of 0.06mm ~ 1.5mm and a width of 100mm ~ 400mm.

As described above, the tin plate completed metal plate (MP) is continuously transferred to pass through the reflow equipment 100 of the present invention, the first high frequency induction heater 110 and the second high frequency induction heater ( The metal plate passing through 120 is first and second induction heating by the thermal energy generated by the electromagnetic induction action when located in the first high frequency induction heater 110 or the second high frequency induction heater 120, Thereafter, while passing through the air cooler 150, it is cooled by thermal diffusion induction through air supply.

In other words, since the high frequency current by the AC voltage is applied to the electric coils 111 and 121, the magnetic flux is formed in the first high frequency induction heater 110 or the second high frequency induction heater 120, respectively. Induction current (eddy current) is generated in the metal plate when the metal plate (MP) transferred to the inside of the first high frequency induction heater 110 or the second high frequency induction heater 120 is formed, and the metal plate (MP) Heat is generated by the generation of joule heat (eddy current loss) due to the specific resistance of the induction current and the induced current, and the metal plate (MP) is heated. The coil-type first high frequency induction heater 110 has a predetermined speed. Uniformly heating the entire surface of the metal plate (MP) to be transferred to the core, the second high frequency induction heater 120 of the core method is concentrated heating while narrowing the heating area of the metal plate (MP) to be transferred Will act.

At this time, the first high frequency induction heater 110 and the second high frequency induction heater 120 may vary depending on the material conditions, such as the material and the thickness of the metal plate, but 10kw ~ in a state where a high frequency of 500Hz to 3000Hz is applied The high power of 150kw is applied, and the heating condition can be changed by simple volume control by applying the induction heating method.

Here, if the third high frequency induction heater is further installed between the second high frequency induction heater 120 and the air cooler 150, the tin plated metal plate (MP) is an air cooler after the third induction heating treatment. 150 will be cooled.

Accordingly, in performing the reflow treatment of the plated tin plate on the metal plate, it is possible to easily change the heating conditions on the tin plated layer of the metal plate by simply adjusting the volume by applying a high frequency induction heating method. In addition, it is possible to derive instantaneous temperature spikes and dips, and also to perform fine adjustments of the temperature position, thereby improving the working environment without changing the working conditions without difficulty in controlling temperature. Non-contact induction heating is used to heat the metal sheet to change the microstructure, thereby improving the quality of tin plating through the reflow process.

In addition, the first high frequency induction heater 110 and the second high frequency induction heater 120 or the third high frequency induction heater (not shown) are each designed to flow the cooling water through the medium share of the electric coil provided in each. Therefore, the heater can be thermally and mechanically protected to increase the service life.

The high frequency induction heating melts the plated tin plated layer on the surface of the metal plate (MP) and induces a microstructure change of the tin, and passes through the second high frequency induction heater 120 or the third high frequency induction heater. By supplying air using the air cooler 150 to the surface of the metal plate in the state of microstructure change, and air cooling treatment to induce cooling by thermal diffusion as well as tin plating layer plated on the surface of the metal plate (MP) The organization state of the dipping (dipping) in the tank 50 containing the coolant, the final cooling equipment is to perform a pre-crystallization operation before the final cooling treatment.

At this time, the air through the air cooler 150 to improve the reflow efficiency by supplying at a temperature condition of -15 ℃ ~ 15 ℃, and through the air supply to cool the tin plated layer to crystallize the tissue particles and In addition, it maintains the gloss by reflow to improve the gloss quality and induce thermal diffusion, it is possible to evenly form the gloss quality of the metal plate material by tin plating.

In addition, when the final cooling treatment of the metal plate (MP) through which the crystallization of the tin plating is made through the reflow process by induction heating and air cooling as described above through the water tank 50 containing the cooling water, the final plating is performed. You are done.

Here, in the final cooling treatment via the water tank 50, the tin plating surface-treated through air cooling included in the reflow process of the present invention is crystallized in advance, and the metal plate (MP) is pre-cooled by thermal diffusion induction. When the tin plating layer is in contact with the cooling water, it is possible to prevent the change of physical properties and the penetration of water particles, thereby eliminating the appearance of wave prints or polka dots that have been frequently generated on the surface of the tin plating layer of the metal sheet. It is possible to improve the problem that the roller marks on the surface of the tin plated layer of the metal plate material by the feed roller 30 for the feed processing of the.

1 is a schematic diagram showing an entire system for tin plating process treatment of a metal sheet including a reflow equipment for tin plating according to the present invention.

Figure 2 is a detailed view showing the reflow equipment according to the present invention.

Figure 3 is a cross-sectional view showing an induction heater in the present invention.

Explanation of symbols on the main parts of the drawings

10: unwinder 20: rewinder

30: feed roller 40: tin plating equipment

50: tank 100: reflow equipment

110: first high frequency induction heater 120: second high frequency induction heater

111,121: electric coil 111a, 121a: through hollow

122: core 112,123: support plate

140: space adjusting member 150: air cooler

Claims (7)

Reflow equipment installed in the tin plating equipment for tin plating and the cooling treatment tank, and in the reflow equipment for tin plating process treatment of metal plate for performing the reflow process for heating the tin plate completed transfer metal treatment ; A first high frequency induction heater of a coil type installed to face both sides of the tin plate to which the transfer process is carried out through the tin plating equipment, and for induction heating of the metal plate first through induction magnetic field generation; It is disposed under the first high frequency induction heater, but installed so as to face both sides of the tin plate of the transfer plate is completed, the second core of the core method for the secondary induction heating of the metal plate by concentrating the generation of induction magnetic field A high frequency induction heater; Arranged under the second high frequency induction heater, but installed so as to face both sides of the tin plate is completed, the transfer is carried, characterized in that it comprises an air cooler for supplying air to both sides of the metal plate Reflow equipment for tin plating process treatment of metal plate. The method of claim 1, And a third high frequency induction heater installed between the second high frequency induction heater and the air cooler for tertiary induction heating of the tin plated metal sheet and configured in a coil or core manner. Reflow equipment for tin plating process treatment of metal plate. The method of claim 1, The first high frequency induction heater or the second high frequency induction heater, or both of them are provided with a spacing adjusting member for adjusting the arrangement interval in the front and rear direction, the tin plating process reflow process for metal plate material. equipment. The method of claim 1, The first high frequency induction heater, the second high frequency induction heater, or both of them are configured to thermally and mechanically protect the heater through the supply of cooling water, the tin plate process for reflowing metal plate material. equipment. 5. The method according to any one of claims 1 to 4, The air cooler is a reflow equipment for tin plating process treatment of a metal sheet, characterized in that the air-conditioning type of air blowing type or air jet type of line injection method. A high frequency induction heater having a coil method or a core method is disposed up and down, and induction heating is performed through a metal plate member having a tin plated layer formed on the high frequency induction heater. A high frequency induction heating step of performing induction heating; And an air cooling step of air cooling the tin plated layer through an air supply by passing the metal plate having the tin plated layer in the induction heating state through the induction heating step through the air cooler. Reflow method for processing. The method of claim 6, The induction heating condition is a high power of 10kw ~ 150kw is applied in a state where a high frequency of 500Hz ~ 3000Hz is applied, The air supply condition is a reflow method for tin plating process treatment of a metal sheet, characterized in that the air is supplied in the temperature range of -15 ℃ ~ 15 ℃.

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