KR102639387B1 - Releasing agent for separating titanium alloy thin plates after hot rolling of pack slab stacked with multiple titanium slabs, releasing agent application apparatus for slab and method for applying releasing agent for slab using the same - Google Patents

Abstract

The present invention relates to a release agent for thin plates after rolling, a release agent application device for slabs, and a method for applying a release agent to slabs using the same. The present invention relates to a release agent application solution that does not intentionally contain acetone, methyl ether, etc., which is harmless to the human body and safe in the workplace. It can be used to greatly increase work safety, greatly improve the work environment, and apply high voltage to the spray nozzle part to uniformly apply the release agent to the surface of a large slab, reduce work costs when applying, and reduce work time. can be greatly shortened.

Description

Releasing agent for separating titanium alloy thin plates after hot rolling of a pack slab in which a plurality of titanium slabs are stacked, a release agent application device for a slab, and a method for applying a release agent to a slab using the same {Releasing agent for separating titanium alloy thin plates after hot rolling of pack slab stacked with multiple titanium slabs, releasing agent application apparatus for slab and method for applying releasing agent for slab using the same}

The present invention relates to a release agent for thin plates after rolling, a release agent application device for slabs, and a method for applying a release agent to slabs using the same. More specifically, the present invention relates to a method for applying a release agent to a slab using the same. More specifically, the present invention relates to a method of applying a release agent to a slab using the same. More specifically, it is applied to a titanium alloy sheet material that is stacked and rolled in multiple pieces to facilitate release of the titanium sheet material after rolling. The invention relates to a release agent for thin plates after rolling, a device for applying a release agent to an intermediate material for thick plates, and a method for applying a release agent to an intermediate material for thick plates using the same.

Titanium alloy is difficult to manufacture in thin plates because its deformation resistance is highly dependent on temperature and the processing load increases due to the temperature drop during processing.

Therefore, high-strength titanium alloy sheet materials have the problem of being difficult to manufacture through general rolling due to problems with material heat loss and springback phenomenon.

Recently, high-strength titanium alloy sheet materials have been manufactured using a pack rolling method in which titanium slabs are packed with a cover material and rolled to control the thickness to 2 mm or less.

The pack rolling method involves stacking a plurality of heavy plate intermediate materials, that is, a plurality of titanium slabs, to form a core material, covering the entire core material with a cover material, vacuum welding to produce a pack slab for rolling, and hot rolling to produce a high-strength titanium alloy sheet material. .

To ensure that the laminated titanium alloy sheet materials can be easily separated after rolling, a release agent is applied between the titanium slabs in the process of preparing the core material, that is, in the process of stacking the titanium slabs.

The conventional mold release agent used in the pack rolling method uses a small can-type BN spray.

In addition, the conventional spray-type release agent used in the pack rolling method is a solution of hexagonalboron nitride powder mixed with a solvent and diluent, and is manually sprayed and applied to the surface of a large area of steel sheet, that is, the surface of a titanium slab. It is applied manually by brushing, rubbing with a paint roller, etc.

However, the conventional mold release agent used in the pack rolling method uses solvents such as ether and acetone, which contain toxic substances harmful to the human body, so air circulation in the workplace is essential, and even if air circulation is achieved, ether remaining in the workplace There was a problem of creating a working environment harmful to the health of workers, including respiratory organs, due to acetone.

In addition, ether and acetone contained in conventional mold release agents used in the pack rolling method are highly flammable. Accordingly, in the conventional pack rolling method, there was a problem in that explosion and fire problems occurred due to the flammability of the release agent during the welding process to cover and pack the core material with a cover material.

In addition, the release agent is applied by manually spraying or applying it by brushing or rubbing with a paint roller. In the case of a large plate area, that is, a titanium slab measuring 1 to 3 m horizontally and 1 to 3 m vertically, the worker's There was a problem in that it was difficult to evenly apply the release agent to the entire surface with manual application.

In addition, when the area of the plate is large, that is, in the case of a titanium slab measuring 1 to 3 m horizontally and 1 to 3 m vertically, the worker stands on the surface of the slab and performs the application work of applying the release agent. In this case, the surface of the slab is covered by the worker. There was a problem that defects could occur due to contamination by , and to make up for this, the application process took a very long time.

Korean Patent Registration No. 1242895 (registered on March 6, 2013) “Mold release agent injection device for magnesium casting roll”

The purpose of the present invention is to provide a release agent for thin plates after rolling that is harmless to the human body and can be safely used in the workplace.

Another object of the present invention is to provide a release agent application device that can uniformly apply a release agent to the surface of a slab with a large area, reduce work costs during application, and significantly shorten work time, and a method of applying a release agent to a slab using the same. there is.

In order to achieve the above object, the present invention is a boron nitride powder containing 99 wt% to 99.65 wt% of BN, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.8 wt% of O ₂ in a total of 100 wt%. Provided is a release agent for thin plates after rolling, characterized in that:

In the present invention, the boron nitride may be hexagonal boron nitride.

In the present invention, the boron nitride powder may have a particle size of 3 to 5 μm.

In the present invention, the boron nitride powder may be a crystalline white solid powder with a tap density of 0.2 to 0.4 g/cm ³ and an apparent density of 14 to 16 g/m ³ .

In the present invention, a solution containing a total of 100 wt%, including 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of a binder containing nanometer-sized SiO ₂ , contains 1 to 10 wt% of the boron nitride powder relative to 100 wt% of the solution. It may be a mold release agent coating solution.

In order to achieve the above object, the present invention includes a base portion for application work on which the core plate member to be applied is placed, a spray nozzle portion for spraying a release agent application solution on the surface of the core plate member seated on the upper surface of the base portion for application work, and a spray nozzle. A release agent application device for a slab comprising a coating solution supply unit that supplies a release agent coating solution to the spray nozzle unit, an air supply unit that supplies air for spraying the solution to the spray nozzle unit, and a voltage application unit that applies a high voltage to the spray nozzle unit. to provide.

In the present invention, the release agent application solution is a solution containing 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of binder containing nanometer-sized SiO ₂ , and 1 to 10 wt of boron nitride powder relative to 100 wt% of the solution. % may be included.

In the present invention, the boron nitride powder may include 99 wt% to 99.65 wt% of BN, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.8 wt% of O ₂ in a total of 100 wt%.

In the present invention, the boron nitride may be hexagonal boron nitride.

In the present invention, the boron nitride powder may have a particle size of 3 to 5 μm.

In the present invention, the boron nitride powder may be a crystalline white solid powder with a tap density of 0.2 to 0.4 g/cm ³ and an apparent density of 14 to 16 g/m ³ .

The present invention provides a release agent application device for a slab, further comprising a first injection nozzle moving unit that moves the injection nozzle unit forward and backward in the longitudinal direction of the core plate member.

The present invention provides a release agent application device for a slab, further comprising a second injection nozzle moving part that linearly moves the injection nozzle part back and forth in the width direction.

The present invention provides a release agent application device for a slab, further comprising a nozzle raising and lowering unit that moves the spray nozzle unit up and down to adjust the height of the spray nozzle unit.

The present invention provides a release agent application device for a slab, further comprising a solution drying lamp unit that irradiates light to dry the release agent application solution applied to the surface of the core plate member.

In the present invention, the solution drying lamp part is located across the base part for the application operation in front of the core plate member in the longitudinal direction, and the base part for the application operation is a plate transfer part that transports the core plate member and applies the release agent application solution to the surface. The completed core plate member may be passed under the solution drying lamp unit to dry the release agent coating solution on the surface of the core plate member.

In the present invention, the solution drying lamp units may be positioned in plural numbers spaced apart in the transport direction of the core plate member.

The present invention provides a release agent application device for a slab, further comprising a drying lamp raising and lowering unit that moves the solution drying lamp unit up and down to adjust the height of the solution drying lamp unit.

The present invention is a method of applying a release agent by spraying a release agent coating solution onto the surface of a core plate member that is stacked in multiple pieces, packaged with a cover material, and then pack-rolled at once. A high voltage is applied to the spray nozzle portion that sprays the release agent application solution. A method of applying a release agent to a slab is provided, which includes a solution spray application step of spraying the release agent application solution onto the surface of the core plate member through a spray nozzle unit.

In the present invention, the solution spray application step includes a width direction movement process of moving the spray nozzle part in the width direction of the core plate member while spraying the release agent application solution into the spray nozzle part, and moving the spray nozzle part in the longitudinal direction of the core plate member. A release agent coating layer can be formed by applying a release agent coating solution to the entire surface of the core plate member while repeating the longitudinal movement process.

The present invention provides a method of applying a release agent to a slab, further comprising a solution drying step of drying the release agent coating layer applied to the entire surface of the core plate after the solution spray application step.

In the present invention, the solution drying step can be carried out by transferring the core plate member on which the solution spray application step has been completed, passing it under an infrared lamp, and drying it by irradiating infrared rays to the release agent coating layer.

In the present invention, the release agent application solution is a solution containing 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of binder containing nanometer-sized SiO ₂ , and 1 to 10 wt of boron nitride powder relative to 100 wt% of the solution. % may be included.

In the present invention, the boron nitride powder may include 99 wt% to 99.65 wt% of BN, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.8 wt% of O ₂ in a total of 100 wt%.

In the present invention, the boron nitride may be hexagonal boron nitride.

In the present invention, the boron nitride powder may have a particle size of 3 to 5 μm.

In the present invention, the boron nitride powder may be a crystalline white solid powder with a tap density of 0.2 to 0.4 g/cm ³ and a bulk density of 14 to 16 g/m ³ .

The present invention is harmless to the human body and can be used safely in the workplace, greatly increasing work safety and greatly improving the work environment.

The present invention can uniformly apply a release agent to the surface of a slab with a large area, reduce work costs during application, and significantly shorten work time, making it possible to easily separate a plurality of core plates laminated after pack rolling. , It has the effect of greatly improving productivity and reducing manufacturing costs.

1 is a scanning electron microscope photograph of boron nitride powder in a release agent for thin plates after rolling according to the present invention.
Figure 2 is a diagram illustrating hexagonal boron nitride in a release agent for thin plates after rolling according to the present invention.
Figure 3 is a perspective view schematically showing an embodiment of a device for applying a release agent to a slab according to the present invention.
Figure 4 is a front view schematically showing an embodiment of a slab release agent application device according to the present invention.

A preferred embodiment of the present invention will be described in detail with the accompanying drawings as follows. Prior to the detailed description of the present invention, the terms or words used in the specification and claims described below should not be construed as limited to their ordinary or dictionary meanings. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, so at the time of filing the present application, various alternatives are available. It should be understood that equivalents and variations may exist.

Figure 1 is a scanning electron microscope photograph of boron nitride powder in the release agent for thin plates after rolling according to the present invention, and Figure 2 is a diagram illustrating hexagonal-shaped boron nitride in the release agent for thin plates after rolling according to the present invention.

This is a scanning electron micrograph of boron nitride powder in the release agent for thin plates after rolling according to the present invention, and the release agent for thin plates after rolling according to the present invention has BN 99 wt% ~ 99.65 wt%, B ₂ O ₃ 0.05 ~ 0.15 wt in a total of 100 wt%. %, O _{2 and} boron nitride powder containing 0.3 to 0.85 wt%.

BN is boron nitride and contains at least 99 wt%. It is a compound of boron, element number 5, and nitrogen, element number 7, combined in a 1:1 ratio. The two elements are covalently bonded to each other, so it is chemically very stable and is an electrical insulating material. 2973 It has a melting point of ℃, that is, it has the characteristic of having a high temperature melting point.

In addition, BN has high temperature stability of 1,000℃ in air and 1,400℃ in vacuum, low thermal expansion, and low coefficient of friction (0.15 ~ 0.70), making it suitable for use as a release agent to separate two metal sheets laminated after high temperature hot rolling.

In addition, BN is hexagonal boron nitride, that is, hexagonal boron nitride, and can maintain conductivity and heat resistance at the temperature and pressure of the hot rolling process.

B ₂ O ₃ and O ₂ is an impurity that must be included in very small amounts, and B ₂ O ₃ is preferably limited to 0.05 to 0.15 wt%, and O ₂ is preferably limited to 0.3 to 0.8 wt%.

Boron nitride powder is a crystalline white solid powder with a particle size of 3 to 5㎛, a tap density of 0.2 to 0.4g/cm ³ and an apparent density of 14 to 16g/m ^{3 .} It is characterized by being.

The release agent for thin plates after rolling according to the present invention is a release agent application solution containing 1 to 10 wt% of boron nitride powder relative to 100 wt% of the solution in a solution having a total of 100 wt%, including 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of binder. Includes.

As an example, the solvent is an inorganic diluent, and the inorganic diluent is 45 wt% to 55 wt% and ethanol is 45 wt% to 55 wt% in a total of 100 wt% mixed with IPA (isopropyl alcohol) and PEGM (polyethylene glycol methyl ether).

In addition, the binder is an inorganic binder, for example, and contains nano-sized SiO ₂ , that is, nanometer-sized SiO 2 _, and enables the formation of a coating film of boron nitride powders.

In addition, the binder serves to help the boron nitride powders adhere well to the surface of the core plate on which the boron nitride powder is stacked, that is, the titanium core plate that is stacked and pack rolled, and the release agent for thin plates after rolling according to the present invention is a titanium core plate ( When applied to the surface of Ti-6Al-4V), it contains 5wt% to 10wt% so that the boron nitride powder can be evenly and uniformly applied and adhered throughout.

The release agent application solution does not intentionally contain acetone or methyl ether, so it can create a working environment that is harmless to the human body during indoor work, and there is no risk of explosion, ensuring a safe working environment.

In addition, the release agent coating solution dries easily enough that it does not stick to hands within 5 minutes after application, and after drying, it can form a BN dry film with excellent adhesion to the extent that boron nitride powder does not fly, and is completely cured in about 30 minutes. It has adhesive properties.

In addition, the release agent coating solution, that is, the release agent for thin plates after rolling according to the present invention, contains boron sulfide powder with a high melting point of 2973°C, and can maintain conductivity and heat resistance even at the temperature and pressure of the pack rolling process in the range of 1020°C to 1250°C. there is.

Meanwhile, Figure 3 is a perspective view schematically showing an embodiment of a release agent application device for a slab according to the present invention, and Figure 4 is a front view schematically showing an embodiment of a release agent application device for a slab according to the present invention.

With reference to FIGS. 3 and 4, an embodiment of the device for applying a release agent to a slab according to the present invention will be described in detail below.

One embodiment of the device for applying a release agent to a slab according to the present invention is to spray a release agent coating solution on the surface of a titanium slab, that is, a titanium core plate (Ti-6Al-4V), which is stacked in plural, packaged with a cover material, and then pack-rolled at once. An example is a release agent application device that applies

One embodiment of the device for applying a release agent to a slab according to the present invention includes a base portion 100 for an application operation on which a core plate member 10 to be applied is placed, and a core plate member 10 seated on the upper surface of the base portion 100 for an application operation. ), a spray nozzle unit 200 for spraying the release agent coating solution on the surface, a coating solution supply unit 300 for supplying the release agent coating solution to the spray nozzle unit 200, and air for spraying the solution into the spray nozzle unit 200. It includes an air supply unit 400 that supplies air, and a voltage application unit 500 that applies high voltage to the spray nozzle unit 200.

The voltage application unit 500 applies high voltage to the spray nozzle unit 200, and the base unit 100 for application work is grounded so that the release agent application solution sprayed from the spray nozzle unit 200 is applied to the surface of the core plate member 10. Make sure to apply it evenly.

In addition, one embodiment of the release agent application device for a slab according to the present invention further includes a coating solution insulator that insulates the release agent application solution stored in the coating solution supply unit 300 from the high voltage applied to the spray nozzle unit 200.

It should be noted that the coating solution insulating part can be implemented in various modifications by using a known spraying liquid source insulating device that insulates the spraying liquid source from the high voltage of the electrostatic spraying device when using a conductive spraying liquid, so a more detailed description is omitted.

In addition, as an example, the release agent coating solution supplied from the coating solution supply unit 300 is the above-mentioned release agent coating solution.

That is, the release agent application solution contains 100 wt% total, including 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of binder, and 1 to 10 wt% of boron nitride powder relative to 100 wt% of the solution.

As an example, the boron nitride powder contains 99 wt% to 99.65 wt% of BN, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.85 wt% of O ₂ out of a total of 100 wt%, and BN is nitrided in a hexagonal shape. Take boron as an example.

One embodiment of the device for applying a release agent to a slab according to the present invention applies a high voltage to the spray nozzle unit 200 to spray the release agent coating solution on the surface of the core plate member 10 with a uniform thickness over the entire area. do.

In addition, one embodiment of the release agent application device for slabs according to the present invention uniformly applies the release agent application solution to the surface of the core plate member 10 by increasing the surface area of the rolled material according to the reduction rate, and the thickness is greater than or equal to a preset thickness. Apply the release agent coating solution at a certain thickness to prevent this from happening.

The air supply unit 400 is located in the air storage tank 410, the air supply hose 420 connecting the air storage tank 410 and the spray nozzle unit 200, and the air supply hose 420. ) includes an air supply control valve 430 that opens and closes the flow path.

The air supply unit 400 stores high-pressure air in the air storage tank 410 and controls the opening and closing amount of the air supply hose 420 with an air supply control valve to supply the spray nozzle unit 200 through the air supply hose 420. The supply amount of furnace air can be controlled and supplied.

Although the air supply unit 400 is not shown, it should be noted that an air pump may be mounted on the air supply hose 420 to supply air to the spray nozzle unit 200 through the air supply hose 420.

The coating solution supply unit 300 includes a coating solution storage tank 310 that stores the release agent application solution, a coating solution supply hose 320 connecting the coating solution storage tank 310 and the spray nozzle unit 200, and a coating solution supply hose. It includes a coating solution pump 330 mounted on 320, and a coating solution supply control valve 340 located on the coating solution supply hose 320 to open and close the flow path of the coating solution supply hose 320.

The coating solution supply unit 300 is equipped with a coating solution pump 330 on the coating solution supply hose 320, and operates the coating solution pump 330 to supply the release agent coating solution into the coating solution storage tank 310 through the coating solution supply hose ( The release agent is supplied to the spray nozzle unit 200 through the coating solution supply hose 320, and the opening and closing amount of the coating solution supply hose 320 is controlled by the coating solution supply control valve to the spray nozzle unit 200 through the coating solution supply hose 320. The amount of application solution can be adjusted while being supplied.

The coating solution supply unit 300 may further include a stirring unit (not shown) that periodically stirs the release agent coating solution stored in the coating solution storage tank 310.

As an example, the stirring unit periodically stirs the release agent coating solution by magnetic stirring using magnetic force to prevent the boron nitride powder from settling. In addition, it is noted that it can be implemented by various modifications to known stirring structures.

In addition, one embodiment of the device for applying a release agent to a slab according to the present invention further includes a first injection nozzle moving unit 600 that moves the injection nozzle unit 200 forward and backward in the longitudinal direction of the core plate member 10. do.

As an example, the first injection nozzle moving unit 600 is a ball screw type linear actuator, and it is noted that it can be implemented in various modifications using known linear moving devices such as hydraulic cylinders.

The first injection nozzle moving unit 600 moves the injection nozzle unit 200 forward and backward, that is, moves the injection nozzle unit 200 in a linear reciprocating direction in the Y-axis, which is the longitudinal direction of the core plate member 10, to form a core plate. Ensure that the release agent coating solution is evenly and uniformly applied to the surface of the member 10.

In addition, one embodiment of the device for applying a release agent to a slab according to the present invention may further include a second injection nozzle moving unit 700 that linearly moves the injection nozzle unit 200 in a reciprocating direction in the width direction.

The second injection nozzle moving unit 700 moves the injection nozzle unit 200 in a reciprocating straight line in the width direction, that is, in the X-axis direction, and applies a release agent to the surface of the core plate member 10 in the width direction of the core plate member 10. Ensure that the solution is applied evenly and uniformly.

As an example, the second injection nozzle moving unit 700 is a ball screw type linear actuator, and it can be implemented in various modifications using known linear moving devices such as hydraulic cylinders.

Another embodiment of the slab release agent application device according to the present invention is not shown, but a plurality of spray nozzle units 200 are positioned spaced apart in the width direction of the core plate member 10 to form a width on the surface of the core plate member 10. Ensure that the release agent application solution is applied evenly and uniformly in this direction.

In addition, one embodiment of the device for applying a release agent to a slab according to the present invention may further include a nozzle raising and lowering unit 800 that moves the spray nozzle unit 200 up and down to adjust the height of the spray nozzle unit 200. there is.

The nozzle raising and lowering unit 800 moves the spray nozzle unit 200 up and down to separate the spray nozzle unit 200 from the upper surface of the core plate member 10, that is, the core plate member 10 and the spray nozzle. The spacing between parts 200 can be adjusted.

As an example, the nozzle raising and lowering unit 800 is a ball screw type linear actuator, and it is noted that it can be implemented in various modifications using known linear moving devices such as hydraulic cylinders.

The nozzle raising and lowering unit 800 moves the spray nozzle unit 200 up and down to separate the core plate member 10 and the spray nozzle unit ( 200) The interval can be adjusted to an appropriate interval so that the release agent coating solution can be evenly and uniformly applied to the surface of the core plate member 10.

The injection nozzle unit 200 is located in the second injection nozzle moving unit 700, which is disposed in the width direction of the base unit 100 for application work, that is, located across the core plate member 10, and moves the second injection nozzle. The core plate member 10 is moved linearly back and forth in the width direction by the portion 700.

In addition, the first injection nozzle moving unit 600 is located in the longitudinal direction of the core plate member 10 on both sides of the base unit 100 for application work, and both ends of the second injection nozzle moving unit 700 are connected. And, the second injection nozzle moving unit 700 moves linearly forward and backward in the longitudinal direction of the core plate member 10 by the operation of the first injection nozzle moving unit 600, respectively.

The first injection nozzle moving unit 600 is mounted on the nozzle raising and lowering unit 800 and moves up and down by the nozzle raising and lowering unit 800.

The nozzle raising and lowering unit 800 is positioned upright, and is positioned upright on both ends of the first injection nozzle moving unit 600, and both ends of the first injection nozzle moving unit 600 are connected to form the first injection nozzle moving unit 600. Move (600) up and down.

The injection nozzle unit 200 is mounted on the second injection nozzle moving unit 700 and reciprocates in the width direction of the core plate member 10 by the operation of the second injection nozzle moving unit 700, and the first injection nozzle unit 700 moves back and forth in the width direction of the core plate member 10. The second injection nozzle moving unit 700 mounted on the moving unit 600 moves linearly forward and backward in the longitudinal direction of the core plate member 10, and the nozzle on which the first injection nozzle moving unit 600 is mounted moves up and down. By the operation of the steel part 800, it moves up and down together with the first injection nozzle moving part 600 and the second injection nozzle moving part 700.

The injection nozzle unit 200 adjusts the gap between the core plate members 10 by the operation of the nozzle raising and lowering unit 800, and then adjusts the width of the core plate member 10 by operating the second injection nozzle moving unit 700. After spraying the release agent coating solution while moving in this direction, the release agent coating solution is sprayed while moving in the longitudinal direction of the core plate member 10 by the operation of the first injection nozzle moving part 600, and again the second spray nozzle moving part ( By operating 700), the process of spraying the release agent coating solution while moving in the width direction of the core plate member 10 is repeated, thereby allowing the release agent coating solution to be evenly applied to the entire surface of the core plate member 10.

One embodiment of the device for applying a release agent to a slab according to the present invention further includes a solution drying lamp unit 900 that irradiates light to dry the release agent application solution applied to the surface of the core plate member 10.

The solution drying lamp unit 900 is located across the base unit 100 for the application operation at the front in the longitudinal direction of the core plate member 10, and the base unit 100 for the application operation transports the core plate member 10. The core plate member 10, on which the release agent application solution has been applied to the surface by the plate transfer unit, is passed under the solution drying lamp unit 900 to dry the release agent application solution on the surface of the core plate member 10.

The base unit 100 for application work moves the core plate member 10 in the longitudinal direction of the core plate member 10 using a belt conveyor so that it can pass under the solution drying lamp unit 900.

It should be noted that the base unit 100 for coating work can be implemented in various modifications using known transfer conveyors such as roll conveyors in addition to belt conveyors.

The solution drying lamp unit 900 is located in the width direction of the base unit 100 for application work and dries the release agent application solution applied to the surface of the core plate member 10 transported by the base unit 100 for application work, The release agent coating solution applied to the surface of the core plate member 10 can be dried quickly and efficiently by being located in plural positions spaced apart in the transport direction of the core plate member 10.

In addition, one embodiment of the slab release agent application device according to the present invention adjusts the height of the solution drying lamp part 900 by moving the solution drying lamp part 900 located in the width direction of the base portion for application foil up and down. It may further include a drying lamp raising and lowering unit 910.

The drying lamp raising and lowering unit 910 moves the solution drying lamp unit 900 up and down to increase the distance that the solution drying lamp unit 900 is spaced from the upper surface of the core plate member 10, that is, the core plate member 10. The interval between the solution drying lamp unit 900 can be adjusted.

As an example, the drying lamp raising and lowering unit 910 is a ball screw type linear actuator, and it is noted that it can be implemented in various modifications using known linear moving devices such as hydraulic cylinders.

The drying lamp raising and lowering unit 910 moves the solution drying lamp unit 900 up and down to maintain an appropriate distance between the core plate member 10 and the solution drying lamp unit 900 according to the thickness of the core plate member 10. It can be adjusted so that the release agent coating solution applied to the surface of the core plate member 10 can be dried as quickly and uniformly as possible.

As an example, the solution drying lamp unit 900 is an infrared lamp for drying, and is located in plurality spaced apart around the core plate member 10 to quickly dry the release agent layer applied to the entire surface of the core plate member 10. Dry.

The infrared lamp for drying dries the release agent layer applied to the entire surface of the core plate member 10 as quickly and safely as possible below the ignition temperature of the solvent.

The method of applying a release agent to a slab according to the present invention is a method of applying a release agent by spraying a release agent coating solution onto the surface of a core plate (Ti-6Al-4V) that is stacked in plural, then packaged with a cover material and rolled in a pack at once. Take this as an example.

The method of applying a release agent to a slab according to the present invention involves applying a high voltage to the spray nozzle unit 200 for spraying the release agent coating solution and applying the release agent coating solution to the surface of the core plate member 10 through the spray nozzle unit 200. It includes a spray application step of spraying the solution.

As an example, the release agent application solution supplied from the application solution supply unit 300 is the release agent application solution mentioned above.

That is, the release agent application solution contains 100 wt% total, including 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of binder, and 1 to 10 wt% of boron nitride powder relative to 100 wt% of the solution.

As an example, the boron nitride powder contains 99 wt% to 99.65 wt% of BN, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.85 wt% of O ₂ out of a total of 100 wt%, and BN is nitrided in a hexagonal shape. Take boron as an example.

In more detail, the solution spray application step includes a width direction movement process of moving the spray nozzle portion 200 in the width direction of the core plate member 10 while spraying the release agent application solution into the spray nozzle portion 200 and the spray nozzle portion 200. ) is repeated in the longitudinal direction of the core plate member 10 to form a release agent coating layer by evenly applying the release agent coating solution to the entire surface of the core plate member 10.

In addition, the method of applying a release agent to a slab according to the present invention further includes a solution drying step of drying the release agent layer applied to the entire surface of the core plate after the solution spray application step.

As an example, the solution drying step involves drying the release agent coating layer by irradiating infrared rays with a plurality of infrared lamps spaced apart from each other around the core plate member 10.

In addition, the solution drying step is an example of transferring the core plate member 10 on which the solution spray application step has been completed, passing it under an infrared lamp, and drying it by irradiating infrared rays to the release agent coating layer.

In the solution drying step, the release agent coating layer can be dried safely and as quickly as possible below the ignition point of the solvent by irradiating infrared rays to the release agent coating layer with an infrared lamp and drying it.

The present invention is harmless to the human body and can be used safely in the workplace, greatly increasing work safety and greatly improving the work environment.

The present invention can uniformly apply a release agent to the surface of a slab with a large area, reduce work costs during application, and significantly shorten work time, making it possible to easily separate a plurality of core plates laminated after pack rolling. , greatly improves productivity and reduces manufacturing costs.

It should be noted that the present invention is not limited to the above-described embodiments, but can be implemented with various changes without departing from the gist of the present invention, and these are included in the configuration of the present invention.

10: Core plate member 100: Base portion for application work
200: Spray nozzle part 300: Application solution supply part
310: Application solution storage tank 320: Application solution supply hose
330: Application solution pump 340: Application solution supply control valve
400: Air supply unit 410: Air storage tank
420: Air supply hose 430: Air supply control valve
500: Voltage application unit 600: First injection nozzle moving unit
700: Second injection nozzle moving part 800: Nozzle raising and lowering part
900: Solution drying lamp unit 910: Drying lamp raising and lowering unit

Claims (27)

As a release agent for separating titanium alloy sheet materials after hot rolling of a pack slab in which a plurality of titanium slabs are stacked,
A solution containing a total of 100 wt%, including 90 wt% to 95 wt% of solvent and 5 wt% to 10 wt% of binder, contains 1 to 10 wt% of boron nitride powder relative to 100 wt% of the solution,
The boron nitride powder contains 99 wt% to 99.65 wt% of hexagonal boron nitride, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.8 wt% of O ₂ in a total of 100 wt%,
The binder includes nanometer-sized SiO ₂ ,
The solvent is a release agent for thin plates after rolling, characterized in that it contains 45 wt% to 55 wt% of an inorganic diluent mixed with IPA (isopropyl alcohol) and PEGM (polyethylene glycol methyl ether) and 45 wt% to 55 wt% of ethanol at a total of 100 wt%. .
delete In claim 1,
The boron nitride powder is a release agent for thin plates after rolling, characterized in that the particle size is 3 to 5㎛.
In claim 1,
The boron nitride powder is a release agent for thin plates after rolling, characterized in that it is a crystalline white solid powder with a tap density of 0.2 to 0.4 g/cm ³ and an apparent density of 14 to 16 g/m ³ .
delete A base portion for application work on which the core plate member to be applied is placed;
a spray nozzle unit that sprays a release agent coating solution onto the surface of the core plate member seated on the upper surface of the base unit for the application operation;
a coating solution supply unit that supplies a release agent coating solution to the spray nozzle unit;
an air supply unit supplying air for spraying a solution to the spray nozzle unit; and
It includes a voltage application unit that applies a high voltage to the injection nozzle unit,
The release agent application solution contains 100 wt% of the total, including 90 wt% to 95 wt% of the solvent and 5 wt% to 10 wt% of the binder, and 1 to 10 wt% of boron nitride powder relative to 100 wt% of the solution,
The boron nitride powder contains 99 wt% to 99.65 wt% of hexagonal boron nitride, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.8 wt% of O ₂ in a total of 100 wt%,
The binder includes nanometer-sized SiO ₂ ,
The solvent is a slab release agent applicator characterized in that it contains 45 wt% to 55 wt% of an inorganic diluent mixed with IPA (isopropyl alcohol) and PEGM (polyethylene glycol methyl ether) and 45 wt% to 55 wt% of ethanol in a total of 100 wt%. .
delete delete delete In claim 6,
The boron nitride powder is a release agent application device for a slab, characterized in that the particle size is 3 to 5㎛.
In claim 6,
The boron nitride powder is a crystalline white solid powder with a tap density of 0.2 to 0.4 g/cm ³ and a bulk density of 14 to 16 g/m ^3. A release agent application device for a slab.
In claim 6,
A release agent application device for a slab, further comprising a first injection nozzle moving unit that moves the injection nozzle unit forward and backward in the longitudinal direction of the core plate member.
In claim 12,
A release agent application device for a slab, further comprising a second injection nozzle moving part that linearly moves the injection nozzle part back and forth in the width direction.
In claim 13,
A release agent application device for a slab, further comprising a nozzle raising/lowering unit that moves the spray nozzle unit up and down to adjust the height of the spray nozzle unit.
In claim 6,
A release agent application device for a slab, further comprising a solution drying lamp unit that irradiates light to dry the release agent application solution applied to the surface of the core plate member.
In claim 15,
The solution drying lamp portion is positioned across the base portion for the application operation in front of the core plate member in the longitudinal direction,
The base unit for the application operation is a plate transfer unit that transfers the core plate member, and passes the core plate member on which the application of the release agent application solution to the surface has been completed under the solution drying lamp unit to apply the release agent application solution to the surface of the core plate member. A device for applying a release agent to a slab, characterized in that it dries.
In claim 16,
A release agent application device for a slab, characterized in that the solution drying lamp units are positioned in plural numbers spaced apart in the transport direction of the core plate member.
In claim 16,
A release agent application device for a slab, further comprising a drying lamp raising and lowering unit that moves the solution drying lamp unit up and down to adjust the height of the solution drying lamp unit.
This is a release agent application method in which a release agent coating solution is sprayed and applied to the surface of a core plate member that is stacked in multiple pieces, packaged with a cover material, and then pack-rolled at once.
A solution spray application step of spraying the release agent coating solution onto the surface of the core plate member through the spray nozzle unit while applying a high voltage to the spray nozzle unit for spraying the release agent coating solution,
The release agent application solution contains 100 wt% of the total, including 90 wt% to 95 wt% of the solvent and 5 wt% to 10 wt% of the binder, and 1 to 10 wt% of boron nitride powder relative to 100 wt% of the solution,
The boron nitride powder contains 99 wt% to 99.65 wt% of hexagonal boron nitride, 0.05 to 0.15 wt% of B ₂ O ₃ , and 0.3 to 0.8 wt% of O ₂ in a total of 100 wt%,
The binder includes nanometer-sized SiO ₂ ,
A method of applying a release agent for a slab, characterized in that the solvent contains 45 wt% to 55 wt% of an inorganic diluent mixed with IPA (isopropyl alcohol) and PEGM (polyethylene glycol methyl ether) and 45 wt% to 55 wt% of ethanol at a total of 100 wt%. .
In claim 19,
The solution spray application step is,
While spraying the release agent coating solution into the spray nozzle unit, repeating the width direction movement process of moving the spray nozzle unit in the width direction of the core plate member and the longitudinal movement process of moving the spray nozzle unit in the longitudinal direction of the core plate member. A method of applying a release agent to a slab, characterized in that forming a release agent coating layer by applying a release agent coating solution to the entire surface of the core plate member.
In claim 20,
A method of applying a release agent to a slab, further comprising a solution drying step of drying the release agent coating layer applied to the entire surface of the core plate after the solution spray application step.
In claim 21,
The solution drying step is a method of applying a release agent to a slab, characterized in that the core plate member on which the solution spray application step has been completed is transferred, passed under an infrared lamp, and dried by irradiating infrared rays to the release agent application layer.
delete delete delete In claim 19,
A method of applying a release agent to a slab, characterized in that the boron nitride powder has a particle size of 3 to 5㎛.
In claim 19,
A method of applying a release agent to a slab, characterized in that the boron nitride powder is a crystalline white solid powder with a tap density of 0.2 to 0.4 g/cm ³ and an apparent density of 14 to 16 g/m ³ .