KR20200075271A - A pickling apparatus of steel plates - Google Patents

Abstract

The present invention relates to a pickling device for a steel plate, which has a pickling tank and a pair of brush roll modules positioned inside the pickling tank. The brush roll module includes: a roll body including a pickling solution inlet, a chamber portion connected thereto and receiving a pickling solution, and a plurality of pickling solution outlet holes formed on the sidewalls of the chamber portion; and a brush unit coupled to an outer circumferential surface of the roll body and including a plurality of ring-shaped brushes having brush coupling holes connected to the pickling solution outlet holes to corresopond thereto. The pickling device for the steel plate is characterized in that a pickling liquid contained in the chamber portion flows out to the steel plate along the brush by rotation of the brush roll module.

Description

A pickling apparatus of steel plates}

The present invention relates to a pickling device of a steel sheet, and when the brush roll is rotated, pickling liquid is sprayed from the inside of the brush roll onto the steel sheet to pick up the steel sheet together with the brush, thereby making it difficult to pickle the scale of the surface of the steel sheet ( It is for the pickling device of steel plate that can efficiently remove scale and prevent the occurrence of dent defects during post-processing.

The hot-rolled steel sheet is scaled on the surface of the steel sheet during the heat treatment and rolling process. For example, in the case of a steel type containing a large amount of alloying elements, a scale made of oxides such as iron, chromium, manganese, and silicon may be generated.

If the scale is not removed, the surface of the steel sheet may be damaged due to the scale in the cold rolling process performed later, and the steel pickling scale, which is not easily removed by a general pickling method, for steel grades containing a large amount of alloying elements ) Or an internal oxide layer may be present, and defects due to dents may occur during post-process annealing by the scale or internal oxide layer that has not been removed.

Therefore, the process of removing the scale of the surface of the steel sheet may be a very important process for the quality of the steel sheet. In general, as a pickling solution based on a hydrochloric acid solution, scale removal of the steel sheet is performed by improving the reactivity between the pickling solution and the steel sheet by using a fluid flow in a vortex pickling tank. However, in the case of a difficult pickling scale, it can be difficult to remove efficiently, and the internal oxide layer formed on the bottom of the pickling scale may have limitations in removing, so the development of a pickling device capable of performing pickling in a different method from the prior art This is necessary.

1. Korea Patent Publication No. 10-2009-0039192 (published on April 22, 2009) 2. Japanese Registered Patent No. 6173514 (Registration on July 14, 2017)

The technical problem to be achieved by the present invention is that the pickling liquid is supplied from the inside of the brush, so that the physical pickling force of the brush and the chemical pickling force of the brush are reinforced with each other, and thus the scale of the pickling property and the steel sheet capable of effectively removing the oxide layer of the steel sheet The purpose is to provide a pickling device.

In addition, another technical problem to be achieved by the present invention is to provide a pickling device for a steel sheet capable of improving the quality and reliability of the steel sheet by preventing dent defects during post-annealing by removing the oxide layer and scale on the steel sheet surface. .

Furthermore, another technical problem to be achieved by the present invention is that the pickling liquid is sprayed from the brush, so that the pickling force is reinforced to lower the concentration of the pickling solution than in the prior art, so that pickling of the steel sheet can contribute to worker safety and industrial waste reduction during the process. The object is to provide a device.

The objectives of the embodiments of the present invention are not limited to those mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description. .

In order to solve the above problems, the present invention is a pickling apparatus of a steel plate having a pickling tank and a pair of brush roll modules located inside the pickling tank, wherein the brush roll module includes a pickling liquid inlet and a It is connected to the chamber portion for receiving the pickling liquid, and a roll body including a plurality of pickling liquid outlet holes formed on the sidewalls of the chamber portion and a brush coupling hole connected to the outer peripheral surface of the roll body, and correspondingly connected to the pickling liquid outlet hole. It includes a brush unit having a plurality of ring-shaped brush is formed, it is possible to provide a pickling device of the steel sheet, characterized in that the pickling solution contained in the chamber portion is discharged to the steel plate along the brush by the rotation of the brush roll module have.

The brush roll module may be provided with quick joints on both sides of the roll body to couple or disassemble the roll body or brush unit.

The brush roll module may include brush unit fixtures on both sides of an area where the brush unit is coupled.

The pickling device of the steel sheet may include a pressure measurement module for measuring the pressure applied to the upper or lower portion of the steel sheet by the brush roll module, and may be provided at one side of the pickling tank.

The pickling device of the steel sheet may include a pickling solution supply module for supplying pickling solution to the pickling solution inlet.

The pickling device of the steel sheet according to the embodiment of the present invention is supplied with the pickling liquid discharged from the inside, thereby reinforcing the physical pickling force of the brush and the chemical pickling force of the pickling solution, thereby improving the scattering scale and the oxide layer of the steel sheet. It can be removed efficiently and has the advantage that the pickling rate can be improved.

Therefore, the oxidized layer and scale of the steel sheet are removed to prevent dent defects during post-process annealing, thereby improving the quality and reliability of the steel sheet. In addition, since the chemical pickling effect is reinforced in the physical pickling method, it is possible to lower the concentration of the pickling solution than in the prior art, thus contributing to worker safety during the process and reduction of industrial waste.

1 is a cross-sectional view showing a pickling device of a steel sheet according to an embodiment of the present invention,
Figure 2 is a perspective view showing a brush roll module according to an embodiment of the present invention,
Figure 3 is a cross-sectional view showing the combination of the roll body and the brush unit of the brush roll module according to an embodiment of the present invention,
Figure 4 is a cross-sectional view showing the release of the roll body and pickling solution according to an embodiment of the present invention,
5 is an enlarged view of region A of FIG. 1, and is a cross-sectional view showing a brush unit fixture according to an embodiment of the present invention.

Advantages and features of embodiments of the present invention, and methods of achieving them will be apparent with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In describing embodiments of the present invention, when it is determined that a detailed description of known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification.

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

1 is a cross-sectional view showing a pickling device of a steel sheet according to an embodiment of the present invention, FIG. 2 is a perspective view showing a brush roll module according to an embodiment of the present invention, and FIG. 3 is a brush roll module according to an embodiment of the present invention Figure 4 is a cross-sectional view showing the combination of the roll body and the brush unit, Figure 4 is a cross-sectional view showing the release of the roll body and pickling solution according to an embodiment of the present invention, Figure 5 is an enlarged view of the area A of Figure 1, of the present invention It is a cross-sectional view showing a brush unit fixture according to an embodiment.

1 to 5, the pickling device of the steel sheet according to the embodiment of the present invention may include a pickling tank 100 and a pair of brush roll modules 200 located inside the pickling tank 100. have. The pickling tank 100 is located in a path in which the pickling liquid is accommodated therein and the steel sheet moves, and when the steel sheet moves between the pair of brush roll modules 200, each brush roll module 200 rotates, so that By brushing the upper and lower surfaces, the scale or oxide layer located on both sides of the steel sheet can be removed.

The pickling tank 100 may include a driving module 300 including a motor 310 and a bevel gear 320 connected to the motor 310, and the driving module 300 may include the brush roll module 200 ) Can be rotated. The driving module 300 may change the rotational direction R of the brush roll module 200 in the moving direction or the opposite direction of movement of the steel sheet as necessary by adjusting the rotational direction of the bevel gear 320. For example, the effect of physical cleaning power can be doubled by rotating the brush roll module 200 in the reverse direction to the moving direction of the steel sheet.

In addition, the driving module 300 may perform load sensing of the brush roll module 200 through monitoring the amount of current applied to the motor 310.

The brush roll module 200 may include a roll body 210 and a brush unit 220 coupled to an outer circumferential surface of the roll body 210.

In detail, the roll body 210 is connected to the pickling liquid inlet 212 and a chamber portion 214 connected therewith to receive pickling liquid and a plurality of pickling liquid outlet holes 216 formed on sidewalls of the chamber portion 214. ). When the brush roll module 200 is rotated through the driving module 300, the pickling liquid 50 accommodated in the chamber portion 214 may be in close contact with the inner wall of the chamber portion 214. Also, the pickling liquid 50 may be discharged to the outside of the roll body 210 through the pickling liquid outlet hole 216 by the rotational force of the brush roll module 200.

The brush unit 220 coupled to the outer circumferential surface of the roll body 210 may include a plurality of ring-shaped brushes having a brush engaging hole 226 connected to the pickling liquid outlet hole 216. Therefore, the pickling solution 50 accommodated in the chamber portion 214 may be discharged to the steel sheet along the brush 224 by rotation of the brush roll module 200. That is, the pickling liquid 50 discharged to the outside of the roll body 210 is discharged to the brush coupling hole 226 by centrifugal force due to the rotation of the roll body 210 and flows through the brush 224 to be discharged to the surface of the steel sheet You can. Therefore, when the brush roll module 200 rotates, the rotational force of the brush roll module 200 due to the pickling fluid 50 and the drive module 300 discharged from the chamber 214 at the point where the steel plate and the brush 224 contact each other. Therefore, the pickling efficiency may be further improved. Therefore, the pickling liquid discharged from the inside is supplied to the brush, so that the physical pickling force of the brush and the chemical pickling force of the brush are reinforced with each other, so that the scale of difficult pickling and the oxide layer of the steel sheet can be effectively removed and the pickling speed is improved. There is an advantage. In addition, since the chemical pickling effect is reinforced in the physical pickling method, it is possible to lower the concentration of the pickling solution than in the prior art, thus contributing to the safety of workers during the process and the reduction of industrial waste.

The brush roll module 200 is made of a polypropylene material having strong corrosion resistance so as to prevent corrosion due to the pickling liquid inside the pickling tank 100 and the pickling liquid 50 accommodated inside the roll body 210. desirable. In addition, the pickling tank 100 may be provided with a brush roll module support 110 so that the brush roll module 200 is driven in a stable position despite rotation caused by the drive module 300.

In addition, the roll body 210 and the brush unit 220 may be combined by an LM guide (LM guide) method as shown in FIG. Therefore, even when the roll body 210 is rotated, the position of the brush unit 220 is fixed, so that the revolution of the brush unit 220 can be prevented, so even if the roll body 210 and the brush unit 220 are combined, the driving is performed. The loss of the rotational force of the module 300 can be minimized, and the pickling liquid 50 inside the chamber portion 214 can be effectively discharged.

Furthermore, the brush roll module 200 may be provided with quick joints 230 on both sides of the roll body 210 to combine or disassemble the roll body 210 or the brush unit 220. That is, by providing a quick joint 230 for easy coupling or disassembly for maintenance of the brush roll module 200, it is possible to disassemble or combine the corresponding individual brush roll when the brush 224 is worn, thereby reducing cost. Has the advantage of

Also, the brush roll module 200 may include brush unit fixtures 240 on both sides of an area where the brush unit 220 is coupled. For example, the brush unit fixture 240 may be made of a brush unit fixing stick 242 and a spring 244. The brush unit fixing stick 242 may be pressed to help disassemble the brush unit 220 using the quick joint 230, and after the coupling of the brush unit 220, the brush unit fixing stick 242 is restored by the restoring force of the spring 244. As this rises, the brush unit 220 may be fixed.

The pickling device of the steel sheet according to the embodiment of the present invention includes a pressure measurement module 400 for measuring the pressure applied to the upper or lower part of the steel sheet by the brush roll module 200, at one side of the pickling tank 100. can do. In order to prevent measurement noise caused by the driving module 300, the pressure measuring module 400 may be located on a different side from the driving module 300. The pressure measurement module 400 may include a load cell 410 capable of measuring the pressure of the brush roll module 200, a load cell spring 420 positioned in contact with the load cell, and a plate 430.

Furthermore, the pickling device of the steel sheet according to the embodiment of the present invention may include a pickling solution supply module 500 for supplying the pickling solution 50 to the pickling solution inlet 212. In detail, the pickling liquid supply module 500 is provided with an pickling liquid supply port 510 capable of supplying the pickling liquid 50 into the brush roll module 200, and the chamber portion of the brush roll module 200 is externally provided. At 214, pickling can be provided. In addition, the plunger 520 and the bearing block 530 for connection and coupling between the pickling liquid supply port 510 and the brush roll module 200 may be located on the other side of the pickling tank 100. Furthermore, the pressure measurement module 400 may be located under the bearing block 530 to measure the pressure applied to the brush roll module 200.

In addition, a coupling port 515 for coupling between the pickling fluid supply port 510 and the plunger 520 may be located, and the plunger 520 and the pickling fluid are supplied to prevent leakage of the pickling fluid 50. Between the sphere 510, an O-ring 540 may be located.

Therefore, in the pickling device of the steel sheet according to the embodiment of the present invention, the pickling liquid discharged from the inside is supplied to the brush, thereby strengthening the physical pickling force of the brush and the chemical pickling force of the pickling solution, thereby improving the scattering scale and the steel oxide layer. It can be removed efficiently and has the effect of improving the pickling rate. In addition, since the chemical pickling effect is reinforced in the physical pickling method, it is possible to lower the concentration of the pickling solution, thereby contributing to worker safety during the process and reduction of industrial waste. In addition, the oxide layer and scale of the steel sheet are removed to prevent dent defects during post-process annealing, thereby improving the quality and reliability of the steel sheet.

In the above description, various embodiments of the present invention have been presented and described, but the present invention is not necessarily limited thereto, and a person having ordinary knowledge in the technical field to which the present invention pertains may depart from the technical spirit of the present invention. It will be readily appreciated that branch substitution, modification and modification are possible.

50; Pickling,
100; Pickling Tank,
200; Brush roll module,
210; Roll Body,
214; Chamber,
216; Pickling liquid spill hole
220; Brush Unit,
226; Brush combination hole
230; Quick joint,
240; Brush unit fixture
300; Drive module
400; Pressure measurement module,
500; Pickling solution supply module

Claims (5)

In the pickling device of the steel sheet having a pickling tank and a pair of brush roll modules located inside the pickling tank,
The brush roll module,
A roll body including a pickling fluid inlet, a chamber portion connected to the pickling liquid to receive pickling liquid, and a plurality of pickling liquid outlet holes formed on sidewalls of the chamber, and
It is coupled to the outer circumferential surface of the roll body, and includes a brush unit having a plurality of ring-shaped brush formed with a brush coupling hole connected to the pickling fluid outlet hole,
Pickling device of the steel sheet, characterized in that the rotation of the brush roll module, the pickling solution contained in the chamber portion is discharged to the steel sheet along the brush.
According to claim 1,
The brush roll module is provided with quick joints on both sides of the roll body, the pickling device of the steel sheet, characterized in that the coupling or disassembly of the roll body or brush unit.
According to claim 1,
The brush roll module, the pickling device of the steel sheet, characterized in that the brush unit is provided on both sides of the area where the brush unit is coupled.
According to claim 1,
The pickling device of the steel sheet, the pickling device of the steel sheet, characterized in that the brush roll module is provided with a pressure measurement module for measuring the pressure applied to the upper or lower portion of the steel sheet on one side of the pickling tank.
According to claim 1,
The pickling device of the steel sheet includes a pickling solution supply module for supplying pickling solution to the pickling solution inlet.

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