KR20020036364A - Device for cleaning roll of continuous annealing furnace - Google Patents

Abstract

PURPOSE: An apparatus for fetching a roll and cleaning the surface of the roll in a continuous annealing furnace is provided which smoothly performs continuous operation by reducing a time required in fetching, reloading and cleaning the roll. CONSTITUTION: The apparatus for fetching a roll and cleaning the surface of the roll in a continuous annealing furnace(100) comprises a roll fetching part which is installed at an opening port(110) of the annealing furnace and interlocked with opening or closing of a door(10) to fetch or load a hearth roll(120) inside the annealing furnace(100); a blowing fan which is installed at the side surface of the annealing furnace and cools the hearth roll by blowing air onto the hearth roll(120) fetched from the annealing furnace; and a polishing part which comprises a driving cylinder(50) fixed onto the facility bottom outside the annealing furnace(100) and a wire brush which is installed in a length direction of the hearth roll with being connected to the front of a piston rod of the driving cylinder(50), and uniformly polishes the surface of the hearth roll(120) that is cooled to an ordinary temperature.

Description

Device for cleaning roll of continuous annealing furnace

The present invention relates to a continuous annealing pickling process of a stainless steel hot rolling process, and more particularly, to roll out and roll surface cleaning apparatus of a continuous annealing furnace to quickly remove the ceramic roll inside the continuous annealing furnace to clean foreign matters on the roll surface. It is about.

In general, in order to produce a stainless steel hot coil is subjected to an annealing process of heating the strip temperature to the target temperature (1095 ℃).

Annealing furnaces used for annealing work are divided into batch type and continuous type. Currently, continuous annealing furnace for mass production is mainly used. The continuous annealing furnace has a heating zone, a cracking zone, and a slow cooling zone in one furnace, and the strip is sequentially passed through the furnace to complete annealing.

Continuous annealing is intended to facilitate cold working by recrystallizing the processing structure formed during hot rolling to remove internal stress, and to solidify carbides formed during hot rolling to secure corrosion resistance and improve descaling properties.

Therefore, during continuous annealing, scale peeled from the surface of the strip adheres to the surface of the ceramic roll inside the annealing furnace due to vortex and backflow in the furnace. (In particular, it occurs a lot in the process of changing the thickness of the strip (2mm-6mm). Will be done.)

The scale attached to the ceramic roll heated to a high temperature is completely stuck to the ceramic roll surface while being in contact with the strip, thereby causing a flaw in the strip surface and adversely affecting the strip surface quality.

When this problem occurs, remove the ceramic roll completely from the annealing furnace, and then cool the roll using a cooling fan to peel off the scale, foreign matter, chips, etc. attached to the ceramic roll, and the operator uses a wire brush or sand paper. Various scales and foreign substances peeled off the roll surface are removed.

However, the prior art has a problem that the operator takes a lot of time to clean the surface of the roll to significantly reduce the productivity, causing contamination of another roll to shorten the roll life due to the reduction of the diameter of the roll.

In addition, since it takes a long time to remove and charge the roll, the atmosphere temperature inside the furnace is the main cause of the hunting, which results in poor quality, such as bare metal, annealing scale on the strip surface.

Accordingly, the present invention has been made in order to solve the above problems, the continuous annealing furnace that can be carried out smoothly to perform the continuous operation characteristic of the continuous line by reducing the time required for roll takeout and reloading and roll cleaning The purpose of the present invention is to provide a roll takeout and surface cleaning apparatus.

In addition, another object of the present invention is to provide a roll take-out and surface cleaning apparatus of a continuous annealing furnace that can extend the life of the roll by allowing the roll surface to be evenly polished.

1 is a perspective view showing a roll surface cleaning apparatus according to the present invention,

2 is a partial detail view of the roll surface cleaning apparatus according to the present invention;

3 is a view showing an operating state of the roll surface cleaning apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10 door 11 bearing block

13,23: drive motor 20: rail member

21: driving wheel 22: trolley

24: chain 25: stopper member

30: rotating member 31: extension shaft

32: fastening bar 33: support piece

34: driving cylinder 35: locking member

36: home 40: blowing fan

41: case 50: driving cylinder

51: wire brush

In order to achieve the object as described above, the present invention is installed in the opening of the annealing furnace, the roll take-out part for pulling out / loading the hearth roll in the annealing furnace in conjunction with opening and closing the door, and cools the drawn hearth roll And a polishing portion for evenly polishing the surface of the hearth roll cooled to room temperature.

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

1 is a perspective view showing a roll surface cleaning apparatus according to the present invention, Figure 2 is a partial detailed view of a roll surface cleaning apparatus according to the present invention.

According to the above drawings, the annealing furnace 100 has an opening 110 is provided at a predetermined interval on the side and each opening 110 is a structure that is closed by the door 10, the annealing furnace 100 The inner check or the hearth roll 120 in the furnace 100 is inspected or the door 10 is opened during the recovery of the break so that the hearth roll 120 can be drawn out.

Here, the present invention is installed in the opening 110 of the annealing furnace 100 and the roll withdrawal unit for withdrawing / loading the hearth roll 120 inside the annealing furnace 100 in conjunction with opening and closing the door 10, withdrawal, It includes a cooling unit for cooling the hearth roll 120, and a polishing unit for evenly polishing the surface of the hearth roll 120 cooled to room temperature.

One door of the hearth roll 120 is connected to the door 10 so that the door 10 is pulled out or charged like the door 10 when the door 10 is opened or closed. Referring to the installation structure of the hearth roll 120, the door 10 is opened. The bearing block 11 is installed to penetrate through the center of the bearing block 11, and the rotation shaft of the hearth roll 120 penetrates the inside of the bearing block 11. 13) is installed is connected to the rotating shaft of the hearth roll (120).

The roll take-out part is provided with a rail member 20 protruding from an upper portion of the opening 110 of the annealing furnace 100, and fixedly mounted to the upper portion of the door 10, and a driving wheel 21 is installed on the upper portion of the rail member 20. It consists of a trolley 22 and a trolley driving means and a door opening means.

The trolley driving means is for moving the trolley 22 along the rail member 20. The driving motor 23 is fixedly installed on the bracket extending outwardly to the trolley 22, and the rotation shaft of the driving motor 23. And a chain 24 for connecting the sprocket wheel and the sprocket wheel, which are respectively installed on the driving wheel 21 of the trolley 22 and the rotating shaft.

Therefore, when the driving motor 23 is rotated forward and backward, the driving motor 23 rolls on the rail member 20 to move the trolley 22 mounted to the door 10 to open and close the door 10.

A stopper member 25 is installed at the end of the rail member 20 to prevent the trolley 22 from being separated.

In addition, the door opening means extends to the rotating member 30 and the upper and lower portions of the rotating member 30 rotatably fitted to the bearing block 11 of the hearth roll 120 protruding outside the door 10. Fastening bar 32, one end of which is hinged to the end of the extension shaft 31, protrudingly installed on the outer surface of the door 10, the support piece 33 for supporting the fastening bar 32 in a horizontal state, the door ( 10) and fixed to the extension shaft 31 of the rotating member 30 is installed on both sides of the drive cylinder 34 and the opening 110 of the annealing path 100 for rotating the rotating member 30, The locking bar 35 is formed with a locking member 35 into which the fastening bar 32 is fitted.

Here, a heat insulating material 37 is inserted between the driving cylinder and the door 10 to block heat of the door 10.

Accordingly, the fastening bar 32 is fitted into or separated from the groove 36 of the locking member 35 according to the expansion and contraction operation of the driving cylinder 34 to lock or unlock the door 10.

The cooling unit of the present invention is formed on the side of the annealing furnace 100 is composed of a blowing fan 40 for blowing air to the hearth roll 120 withdrawn from the annealing furnace 100.

In the present embodiment, the shaft member 43 protruding and installing the rotating shaft 42 on one side of the case 41 forming the outer shape of the blowing fan 40, and the rotating shaft 42 is supported on the side surface of the annealing path 100. By fixing the, the blower fan 40 is rotated only when necessary, so that it can be placed in the longitudinal direction of the hearth roll 120.

On the other hand, the polishing unit is connected to the drive cylinder 50 fixed to the bottom of the annealing furnace 100 outside the installation facility, the piston rod of the drive cylinder 50, the wire brush 51 is placed in the longitudinal direction of the hearth roll (120). ).

The driving cylinder 50 is fixedly installed on the base frame 52 installed at a certain height on the floor of the equipment, and the height of the wire brush 51 is adjusted to the position of the hearth roll 120 between the end of the piston rod and the wire brush 51. Connection member 53 for connection is installed.

Since the wire brush 51 is positioned close to the hearth roll 120 through the blowing fan 40, the driving cylinder 50 is a blowing fan 40 so that the driving cylinder 50 is not disturbed when the blowing fan 40 is rotated. Installed higher than).

Reference numerals 54 and 55 which are not described herein are guide bars and guide holders which are respectively installed on the connecting member 53 and the base frame to support the wire brush 51.

Hereinafter will be described the operation of the present invention.

First, while the annealing furnace 100 is in progress, the door 10 is closed in the opening 110 of the annealing furnace 100, and the rotating member 30 is in a horizontal state in accordance with the extending operation of the driving cylinder 34. The fastening bar 32 installed on the extension shaft 31 of the pivot member 30 is rotated so as to fit into the groove 36 of the locking member 35 installed on the annealing path 100 by protruding outward from the door 10. do.

Looking at the process of withdrawing the roll 120 from the annealing furnace 100 in this state, as shown in Figure 3, when the operator operates the switch installed in the control panel, etc., the drive cylinder is installed in the front of the door ( As the 34 is reduced, the pivot member 30 which is connected to the tip of the piston rod of the driving cylinder 34 is pulled.

As the rotation member 30 is pulled toward the driving cylinder 34, the fastening bar 32 hinged to the extension shaft 31 of the rotation member 30 is moved toward the door 10, and thus the locking member 35 The lock 36 of the door 10 is released from the groove 36.

When the contraction operation of the drive cylinder 34 is completed, the drive motor 23 installed in the trolley 22 is operated to move the door 10 in the annealing furnace 100.

That is, when the driving motor 23 installed in the trolley 22 is operated, the driving wheel 21 of the trolley 22 connected by the sprocket wheel and the chain 24 receives power to rotate the rail member 20. The trolley 22 is moved outward along the rail member 20.

Therefore, the door 10 moves to the outside of the annealing furnace 100, such as the trolley 22, and the hearth roll 120 connected to the door 10 is also outside through the opening 110 of the annealing furnace 100. It will be withdrawn.

When the trolley 22 advances to the tip of the rail member 20 and reaches the stopper member 25, the withdrawal of the hearth roll 120 is completed and the driving motor 23 stops, and the surface of the hearth roll 120 is stopped. Blowing fan 40 for cooling the is driven.

Since the blower fan 40 is rotatably installed around the shaft member 43 on the side of the annealing furnace 100, the blower fan 40 lying in parallel with the annealing furnace 100 in advance rotates the hearth roll 120. ).

Therefore, the hearth roll 120 is cooled to room temperature by the wind blowing from the blowing fan 40.

Blowing fan 40 is operated by a timer setting installed in the control panel 120 to cool down the heat of the hearth roll 120, the operation is stopped, and when the operation of the blowing fan 40 is stopped, the hearth roll ( 120) Surface polishing is performed.

That is, as the hearth roll 120 is cooled by the blowing fan 40, various foreign matters and scales on the surface of the hearth roll 120 are peeled off. In this state, the surface of the roll 120 is finely ground so that the roll 120 is polished. You can clean the.

Roll 120 grinding operation is performed by moving the wire brush 51 located between the blowing fan 40 and the hearth roll 120 toward the hearth roll 120, the drive cylinder installed in the base frame 52 When the extension 50 is operated, the wire member 51 installed at the tip of the connecting member 53 is advanced while the connecting member 53 connected to the piston rod end of the driving cylinder 50 is advanced toward the hearth roll 120. It is in close contact with the surface of the hearth roll (120).

When the adhesion of the wire brush 51 is completed, the driving cylinder 50 is stopped and the driving motor 13 connected to the shaft of the hearth roll 120 is rotated to rotate the hearth roll 120.

Therefore, the surface of the roll 120 is finely ground by rotating the hearth roll 120 while the wire brush 51 is in close contact with the surface of the hearth roll 120.

When the roll 120 finishes the polishing operation as described above, the door 10 is closed again by the opening 110 of the annealing furnace 100 through the reverse order of the process, and the hearth roll 120 opens the door 10. As a result, it is charged into the annealing furnace 100.

When the door 10 is closed at the opening 110 of the annealing furnace 100, the driving cylinder 34 is extended to operate, and the fastening bar 32 is inserted into the groove 36 of the locking member 35 to open the door ( 10) is locked.

According to the roll take-out and surface cleaning apparatus of the continuous annealing furnace according to the present invention as described above, there is an effect that can improve productivity by reducing the time and effort required for roll take-out and charging.

In addition, there is an additional advantage that can prevent the generation of a bad strip due to the occurrence of the hearth roll surface defects.

Claims (3)

A roll pull-out unit installed at the opening of the annealing furnace to interlock with the door opening and closing to draw / load the hearth roll in the annealing furnace; A blowing fan installed on the side of the annealing furnace to blow air to the hearth roll drawn from the annealing furnace and to cool it; A grinding unit for uniformly grinding the surface of the chilled hearth roll at room temperature, including a driving cylinder fixed to the bottom of the annealing furnace and a wire brush connected to the end of the piston rod of the driving cylinder and placed in the longitudinal direction of the hearth roll; Roll withdrawal and surface cleaning apparatus of the continuous annealing furnace comprising a. According to claim 1, wherein the roll take-out portion is opened and closed in the annealing furnace opening and the inner side rotatably mounted in the hearth roll, a rail member protruding to the upper opening of the annealing furnace, fixed to the upper door Drive wheels are installed on the upper part of the trolley to move along the rail member, the drive motor is fixedly installed on the bracket extending outward on the trolley, the sprocket wheel and the sprocket wheel are respectively installed on the rotation axis of the drive motor and the drive wheel rotation shaft of the trolley Roll-out and surface cleaning device of the continuous annealing furnace comprising a door opening means for locking or releasing the chain and the door to connect the. According to claim 2, wherein the door opening means is pivotally coupled to the rotating member fitted to the bearing block of the hearth roll protruding to the outside of the door, one end is hingedly coupled to the extension shaft tip extending to the upper and lower portion of the rotating member Fastening bar, a support piece for supporting the fastening bar in a horizontal state by being protruded from the outer side of the door, and fixed to the door and connected to the extension shaft of the rotating member, both sides of the driving cylinder and the opening of the annealing furnace for rotating the rotating member. Rolling out and surface cleaning apparatus of the continuous annealing furnace, characterized in that it comprises a locking member is formed in the groove is formed in the fastening bar is fitted.