KR101263853B1 - Specimen automatic charging apparatus for pass aging heat treatment and the method of specimen temperature homonization for using that - Google Patents

Abstract

The present invention relates to a warm rolling heat treatment specimen automatic blowing device. More specifically, in the automatic hot-rolled heat treatment specimen automatic blowing device for heat treatment during cold rolling to improve the iron loss of the high magnetic flux density oriented electrical steel sheet, a plurality of shot balls for reducing the temperature deviation of the specimen is built-in, A rotating drum provided with a rotating drum door for filling, a drum rotating motor connected to a rotating drum shaft for rotating the rotating drum, and the rotating drum when the rotating drum is charged into a warm rolling furnace; Warm-rolled heat treatment door made of a heat insulating material to block heat of the rolling heat treatment furnace from the outside, a specimen mounting case coupled to the inside of the rotating drum and provided with a support for mounting a plurality of specimens, and a drive motor. And a bogie for loading specimens capable of transferring the rotating drum to the inside of the warm rolling process. Warm relates to a rolled heat-treated specimen automatic injection device and specimen temperature variation equalizing method using the same, comprising a step of.

Description

SPECIMEN AUTOMATIC CHARGING APPARATUS FOR PASS AGING HEAT TREATMENT AND THE METHOD OF SPECIMEN TEMPERATURE HOMONIZATION FOR USING THAT}

The present invention relates to a warm rolling heat treatment specimen automatic blowing device and a method for uniformizing the temperature deviation of the specimen using the same. More specifically, the warm rolling heat treatment is efficiently performed by mounting a plurality of specimens on the specimen mounting table inside the rotating drum and rotating them in a warm rolling heat treatment furnace to reduce the temperature variation of the specimen by the shot balls inside the rotating drum. The present invention relates to a device for automatically warming and heating a specimen, and to uniformizing the temperature variation of the specimen using the same.

PASS AGING Heat treatment is a heat treatment operation performed during cold rolling. Previously, the hot rolling heat treatment (a) was performed by circulating the atmosphere gas as shown in FIG. 1. Referring to FIG. 1, previously, a specimen 31 is placed on a roller 34 before heat treatment, and is horizontally heated in a manner in which it is blown into the warm rolling heat treatment furnace 1 for a predetermined time in accordance with the movement of the roller 34. Furnace was used. In the case of the heat treatment in this manner, after the heat treatment of the specimen due to temperature variation, as can be seen in (b), the specimen 32 after the heat treatment caused a defect in the form of bending. This is a phenomenon caused by variation in temperature without constant temperature throughout the specimen. Thus, when setting the temperature for circulating the atmosphere gas to perform the hot rolling heat treatment, a temperature deviation occurs between the edge portion and the center portion of the specimen. Moreover, the temperature in a furnace may generate | occur | deviate with the position of the heating coil 33 which is a heating source to heat.

The present invention has been made in order to solve the above problems, by performing the hot rolling (PASS AGING) at the appropriate heat treatment temperature during cold rolling of oriented electrical steel sheet, by preventing the temperature deviation of the specimen, the defect of the specimen This is to shorten the heat treatment work time by performing heat treatment of a plurality of specimens at once, and to perform a warm rolling heat treatment more efficiently.

The inventors of the present invention hot rolling heat treatment specimen automatic blowing device is a hot rolling heat treatment specimen automatic blowing device for heat treatment during cold rolling to improve the iron loss of high magnetic flux directional electrical steel sheet, a plurality of shot balls for reducing the temperature deviation of the specimen And a rotating drum provided with a rotating drum door so as to fill the shotball, a drum rotating motor connected to a rotating drum shaft for rotating the rotating drum, and the rotating drum charged into a warm rolling furnace. When, the warm rolling heat treatment door made of an insulating material so that the heat of the warm rolling heat treatment furnace is blocked from the outside, and a specimen mounting case is coupled to the rotating drum, the support is installed so that a plurality of specimens can be mounted; The rotary drum may be transferred into the warm rolling heat treatment furnace by driving of a driving motor. Which it is characterized in that it comprises a balance for sample loading. In addition, the material of the shot ball is steel, characterized in that the temperature of the shot ball is measured through a thermocouple. In addition, the rotating drum is provided with a see-through window so that the inside can be confirmed, the drum rotation roller is installed at the lower portion to be rotated, the specimen mounting case is a plurality of the supply of the shot ball to the lower smooth It characterized in that the hole is formed. Further, the drum shaft is characterized in that the bearing block is fastened around the circumferential outer circumferential surface of the drum shaft to be rotated, the sensor fixing plate is fixed to the left and right sides of the bearing block, and the rotation It is characterized in that the control sensor for controlling the position of the dedicated drum is fixed.

In the present invention, the method for uniformly varying the specimen temperature of the hot-rolled heat treated specimen is a method of uniformly varying the specimen temperature variation of the warm-rolled heat treated specimen for heat treatment during cold rolling to improve iron loss of the high magnetic flux density oriented electrical steel sheet. Heating a shot ball embedded in a rotating drum in a warm rolling heat treatment furnace by a warm rolling heat treatment specimen automatic blowing device to heat the heat treatment temperature within the heat treatment temperature range, and after the shot ball is heated within the heat treatment temperature range, the warm rolling Removing the warm-rolled heat-treated specimen automatic blowing device from a heat treatment furnace, mounting a specimen on a case for mounting a specimen of a rotating drum of the warm-rolled specimen automatic blowing device, and mounting the specimen into the specimen after the specimen is mounted. Rotating the rotating drum to supply a shot ball, and In order to heat treatment to the specimen injection device group specimens characterized by comprising a step of blowing a warm rolling with the thermal treatment.

The present invention heat-treats a large number of specimens at a time without causing defects of the specimens by performing a warm rolling (PASS AGING) at an appropriate heat treatment temperature during cold rolling of the grain-oriented electrical steel sheet so as not to cause a temperature deviation of the specimens. As a result, the heat treatment operation time is shortened, and the hot rolling is performed more efficiently, which is effective in improving the iron loss of the electrical steel sheet.

1 is a schematic view showing a conventional warm rolling heat treatment working apparatus (a) and defective products (b)
Figure 2 is a side view showing the warm-rolled heat treatment specimen automatic blowing device according to an embodiment of the present invention
Figure 3 is a front view showing the warm-rolled heat treatment specimen automatic blowing device according to an embodiment of the present invention
Figure 4 is a cross-sectional view showing a state before loading the specimen of the warm-rolled heat treatment specimen automatic blowing device according to an embodiment of the present invention
Figure 5 is a cross-sectional view showing a state (a) in which the specimen is mounted inside the rotating drum of one configuration of the present invention and an enlarged view (b) of the specimen mounting case (b)
Figure 6 is a cross-sectional view showing a state after mounting the specimen of the warm-rolled heat treatment specimen automatic blowing device according to an embodiment of the present invention
7 is a cross-sectional view showing a state in which the specimen is buried in the shot ball is rotated by the rotating drum of the automatic warm heat treatment specimen automatic blowing device according to an embodiment of the present invention
Figure 8 is a schematic diagram showing the configuration of a thermocouple for sensing the temperature of the shotball according to an embodiment of the present invention
Figure 9 is a flow chart showing the procedure of the temperature deviation uniformity method of the specimen using the automatic hot-rolled heat treatment specimen automatic blowing device according to an embodiment of the present invention

The warm-rolled heat treatment specimen automatic blowing device according to the present invention will be described in detail with reference to the drawings. The specimen loading case (C) and the warm rolling heat treatment for mounting the warm rolling specimen (A) on top of the specimen loading bogie and the specimen loading bogie to transfer the specimen (A) into the warm rolling heat treatment furnace (1). A specimen automatic blowing device rotating drum (2) capable of incorporating a shot ball (S) therein is installed, and a drum rotating motor (10) for rotating the rotating drum (2) is provided at the top of the specimen automatic blowing device. Is installed. The shot ball (S) is a fine spherical sphere having a diameter of about 0.5mm, the material is mainly used for the heat transfer can be made of steel. The drum rotating motor 10 is connected to the rotating drum shaft 3 and the drum rotating chain 20, and is configured to rotate by rotating the rotating drum shaft 3 and the rotating drum 2. Heat-treatment furnace for heat-passing (PASS AGING) heat treatment on the horizontal surface of the upper side of the bogie frame member 22 of the bogie loading frame operated by the electric motor 9 and the vertical surface of the bogie entrance side of the bogie. The door 7 is provided, and this part is insulated. In addition, the specimen auto-feeding device support member 16 is installed on the horizontal surface of the upper portion of the trolley frame member 22, and the drum support roller support member 6S at four positions before, after, and left of the upper portion of the support member 16. And a drum rotation roller 6 is installed on the roller support member 6S, so that the specimen automatic blowing device rotation drum 2 smoothly rotates.

The trolley drive motor 9 is installed at the lower end of one side of the inlet side of the specimen charging cart, and the motor chain gear 9G for the trolley drive and the wheel chain gear 8G for the trolley transfer are connected by the chain 20. The cart transport wheel 8 is driven. In addition, a rotating drum shaft support member 19 is installed on the upper side of the trolley drive motor 9 before and after, left and right, and a bearing block 3B is mounted on the drum shaft support member 19 by a bolt. It is fastened and fixed, and the rotating drum shaft 3 is installed in the bearing block 3B, and the sensor fixing plate 11F is installed in the left and right sides of the bearing block 3B, and is opposite to this sensor fixing plate 11F. The detection plate 11D is provided, and the position recognition sensor 11A, 11B, 11C which is able to stop according to the position during rotation of a rotating drum is provided in three places left and right of this sensor fixing plate 11F.

In addition, a drum rotation motor support member 21 is provided above the bearing block 3B, and a fixing base member B capable of installing the drum rotation motor 10 above the rotation motor support member 21. ) Is installed to be coupled to the drum rotation motor 10, the drum rotation motor chain gear (10G) connected to the drum rotation motor 10 is a shaft chain for rotation of the rotation drum shaft (3) The gear 3G and the motor chain gear 10G for drum rotation are connected and driven by the chain 20. In addition, supporting the rotating drum shaft

One side of the base 19 is connected to the inside of the door 7 by the warm rolling heat treatment, and is fastened by the specimen automatic blowing device rotating drum 2 and the bolt. The specimen automatic blowing device rotating drum 2 is made of heat-resistant stainless steel that can withstand high temperatures (150 ° C. to 600 ° C.), and a shot ball S for warm rolling is built into the rotating drum 2. Moreover, the sight window 4 which consists of heat-resistant glass is provided in two places of the lower end of the rotating drum 2, and it is comprised so that the state of the shot ball S and the test piece A inside can be confirmed.

 In addition, a specimen mounting case C having a rectangular shape is installed on the inner upper side of the specimen automatic feeding device rotating drum 2, and the specimen mounting case C is a rotating drum at the lower portion as shown in FIG. When (2) is rotated, the shot ball (S) has a hole (H) to facilitate the supply and discharge into the specimen mounting case (C), so that the specimen (A) can be inserted into the specimen mounting case (C) The support J is installed at regular intervals horizontally and vertically. Rotating drum door for preventing the deviation of the specimen (A) and preventing the shot ball (S) from exiting when the rotating drum (2) is rotated on the rotating drum (2) on which the specimen mounting case (C) is installed ( 5) is installed, the fixing hook (5F) is installed on the top of the rotating drum door (5) is fastened by fixing the drum door (5). In addition, as shown in FIG. 6, a thermocouple T for detecting a shot temperature for measuring the temperature of the shot ball S is installed inside the rotating drum shaft 3, and the thermocouple T is a shot ball as shown in FIG. 3. It is connected to a temperature control panel (P) indicating the temperature of S), the thermocouple (T) is installed to be bent to the top of the rotating drum (2) to come out of the front contact with the shot ball (S), the rotating drum When (2) rotates, the shot ball (S) is moved to the upper portion where the specimen mounting case (C) of the rotating drum (2) is installed, the temperature of the shot ball (S) is detected by the temperature sensing thermocouple (T) Done.

Each drum rotation motor 10 and the trolley driving motor 9 are electrically connected to the operation remote controller and operated by the remote controller for the rotation of the rotating drum 2 and the operation of the specimen loading cart 12. It may be configured to.

Hereinafter will be described the operation of the present invention hot rolled heat treatment specimen automatic blowing device. The present invention is to press the reverse button of the remote control for the specimen automatic blowing device operation for the heat treatment of the specimen (A) in the warm rolling furnace during cold rolling to improve the iron loss of the high magnetic flux density oriented electrical steel sheet, the specimen automatic blowing device is installed Moving the specimen loading cart out of the heating furnace 1 for warm-rolling heat treatment, and rotating drum position control sensor so that an operator can easily work the specimen mounting case C of the specimen automatic blowing device rotary drum 2 ( 11A), the rotary drum door 5 is opened in a state inclined at a predetermined angle, and the specimen A as many as the amount of heat treatment work is placed between the specimen mounting support members J in the specimen mounting case C. Mount on. When the specimen (A) installation is complete, close the rotating drum door (5), and operate the specimen automatically when the drum door (5) is completely closed by using the fixed hook (5F) installed on the rotating drum door (5) To operate the remote control to operate the drum rotation motor (10). When the drum rotating motor 10 is operated, the rotating drum shaft 3 and the rotating drum 2 are rotated by the operation of the drum rotating motor chain gear 10G and the drum chain gear 3G. At this time, the rotating drum (2) is rotated by the friction with the drum rotating roller (6) for smooth rotation, and the rotation occurs while rotating, the rotating drum (2) at the correct position (point 11A) to rotate 180 ° When the sensor detecting plate 11D detects the sensor 11C positioned in the opposite direction of the sensor 11A at the position where the position sensor 11A rotates together with the rotating drum 2, the rotating drum ( 2) stops and rotates again in the reverse direction, and shakes so that the shot balls S inside the rotating drum 2 can be stacked horizontally, and then rotates again when the position control sensor 11B is detected on the sensor detection plate 11D. When the dedicated drum 2 rotates in the forward direction and the sensor detection plate 11D is detected by the sensor 11C at 180 °, Will work.

Whether the specimen (A) mounted on the specimen mounting case (C) inside the rotating drum (2) is completely buried by the shot ball (S), as shown in Figure 7, the inside of the rotating drum (2) through the viewing window (4) You can check it. When the checking of the buried state of the specimen (A) is completed, press the [Advanced] button of the remote control for operating the specimen automatic blowing device, the balance feed connected to the balance transfer wheel (8) and the balance drive motor (9), respectively The specimen automatic blowing device with the shot ball S in which the wheel chain gear 8G for the wheel and the chain drive chain gear 9G for the bogie drive are heated up to a predetermined required temperature by the electric force of the motor 9, (1) When the door 7 for warm-rolling heat treatment is in close contact with the outer wall of the warm-rolling heat treatment furnace 1, forward movement is stopped.

Automatic test device inside the warm-rolling heat treatment furnace (1) Shot ball (S) heated up to the required temperature inside the rotating drum (2) in contact with the specimen (A) to transfer heat to the specimen (A) Heat treatment (A), the temperature of the shot ball (S) in the rotating drum (2) is a shot ball (S) installed in the rotating drum (2) temperature sensing thermocouple (T) is a shot ball (S) The temperature is detected by contact with and appears on the temperature control panel P. The temperature is confirmed, and the temperature of the shot ball S can be adjusted by adjusting the temperature of the heat treatment furnace 1. When the specimen automatic blowing device is heated in the heat treatment furnace 1 for a predetermined time required for warm rolling and the heat treatment is completed, press the [reverse] button of the remote control for operating the specimen automatic blowing device to warm the specimen automatic blowing device. If the [reverse rotation] button of the remote controller is pressed after transferring out of the heat treatment furnace (1), the rotating drum (2) is rotated around the rotating drum shaft (3) with no load idle under the rotating drum (2). When the sensor detecting plate 11D detects the rotating drum position control sensor 11A which rotates in reverse with the roller 6 and causes the specimen mounting case C inside the rotating drum 2 to be positioned at an upper portion thereof. The rotation of the rotating drum 2 is stopped.

When the rotating drum 2 comes to the position before loading the specimen A, the fixing hanger 5F on the upper part of the rotating drum 2 is disassembled, and the rotating drum door 5 is opened as shown in FIG. Remove the heat treated specimen (A) mounted on the specimen mounting case (C). After removing all the specimens (A), close the rotating drum door (5) again, rotate the rotating drum (2) to be detected by the rotating drum position control sensor (11C) and then maintain the temperature of the shot ball (S) In order to advance the specimen automatic blowing device into the warm rolling furnace (1). At this time, the shot ball (S) is in contact with the thermocouple (T) for detecting the shot temperature, the temperature of the shot ball (S) is detected by the thermocouple (T), the temperature control panel (P) installed on one side of the specimen automatic blowing device By checking the appearing temperature to adjust the temperature of the heat treatment furnace according to the required temperature of the shot ball (S) to maintain the proper temperature of the shot ball (S). As such, during the warm rolling heat treatment operation, the loading / extraction of the specimen is repeated.

The method of uniformizing the temperature deviation of the specimen using the present invention, the hot rolling heat treatment specimen automatic blowing device will be described. Referring to FIG. 9, the method for uniformizing the temperature deviation of the specimen using the automatic rolling heat treatment specimen automatic blowing device includes heating the shotball, removing the automatic rolling heat treatment specimen automatic blowing device from the warm rolling furnace, and mounting the specimen. Mounting the specimen to the case, rotating the drum for rotation, and re-blowing the specimen blowing device into the warm rolling heat treatment furnace.

The heating of the shot ball is a step of heating a shot ball embedded in a rotating drum in a warm rolling heat treatment furnace by a warm rolling heat treatment specimen automatic blowing device to heat the shot ball within a heat treatment temperature range. Since the temperature of the shotball is measured through a thermocouple, it is possible to make the temperature deviation of the specimen more uniform than setting the temperature using an atmospheric gas. Usually, the furnace temperature in a warm press heat treatment furnace is set higher than the heat treatment temperature. After the shot ball is heated within the heat treatment temperature range, the hot rolling heat treatment warm rolling heat treatment specimen automatic blowing device is taken out from the warm rolling heat treatment furnace 1. Since the specimen has not yet been mounted, this is a prerequisite for mounting the specimen. At this time, when the specimen mounting case (C) in the rotary drum in the automatic sample taking device for mounting the specimen is located below the rotating drum (2) can rotate the rotating drum. After the rotating drum door 5 for rotating the rotary drum 2 is opened, the specimen is mounted in the specimen mounting case. After the specimen is mounted, the rotating drum is rotated to supply the shot ball into the specimen. The warm-rolled specimen automatic blowing device is blown into the warm-rolled heat treatment furnace to heat-treat the specimen.

1: Warm rolling furnace (Furnace) 2: Rotary drum
3: rotating drum shaft 3B: bearing block
3G: Rotating Drum Chain Gear 4: Viewing Window
5: rotating drum door 5F: fixed hanger
6: Drum rotation roller 6S: Roller support member for drum rotation
7: Door for warm rolling heat treatment 8: Balance wheel
8G: Wheel transfer gear for bogie 9: Bogie drive motor
9G: Balance gear drive gear 10: Drum rotation motor
10G: drum rotation motor chain gear 11A, 11B, 11C: rotation drum position control sensor
11D: Detection Plate 11F: Sensor Mounting Plate
12: bogie 14 for the loading of specimens
16: support member 17: thermocouple mounting piping
19: Rotating drum shaft support member 20: Chain
21: motor support member for drum rotation
22: balance frame member 30: chain belt
31: Specimen before heat treatment 32: Specimen after heat treatment
33: heating coil 34: roller
A: Specimen C: Specimen mounting case
D: Insulation H: Hole
E: Fixing bolt J: Specimen mounting support member
S: Shortball T: Thermocouple
P: temperature control panel

Claims (10)

In the hot rolled heat treatment specimen automatic blowing device for heat treatment during cold rolling to improve the iron loss of high magnetic flux density oriented electrical steel sheet,
A rotating drum having a plurality of shot balls embedded therein for reducing the temperature variation of the specimen and provided with a rotating drum door to fill the shot balls;
A specimen mounting case coupled to the rotating drum and provided with a support for mounting a plurality of specimens;
A drum rotating motor connected to a rotating drum shaft for rotating the rotating drum;
A specimen loading cart which can transfer the specimen automatic charging device equipped with the rotating drum to the inside of the warm rolling heat treatment furnace by driving a driving motor;
It is installed on the bogie for loading the specimen, when the specimen automatic charging device is charged in the warm rolling heat treatment furnace, the hot rolling heat treatment door made of a heat insulating material in close contact with the outer wall of the warm rolling heat treatment furnace to block heat from the outside; Warm rolling heat treatment specimen automatic blowing device comprising a. The method of claim 1,
Warm shot heat treatment specimen automatic blowing device, characterized in that the material of the shot ball is steel. The method of claim 1,
The hot rolled heat treatment specimen automatic blowing device, characterized in that the temperature of the shot ball is measured through a thermocouple. The method of claim 1,
The rotating drum is a heat treatment specimen automatic blowing device, characterized in that the viewing window is installed so that the inside can be confirmed. The method of claim 1,
The rotating drum is a heat treatment specimen automatic blowing device, characterized in that the drum rotation roller is installed in the lower portion to be rotated. The method of claim 1,
The specimen mounting case is a specimen automatically blowing device, characterized in that a plurality of holes are formed to facilitate the supply of the shot ball in the lower portion. The method of claim 1,
And the drum shaft is rotated so that the bearing block is fastened around the circumferential outer circumferential surface of the drum shaft. The method of claim 7, wherein
Sensor fixing plate is fixedly installed on the left and right sides of the bearing block, a control sensor for controlling the position of the rotating drum is fixed to the sensor fixing plate, characterized in that the warm-rolled heat treatment specimen automatic injection device. In the method for uniformly varying the temperature of the specimen of the hot-rolled heat treatment specimens for heat treatment during cold rolling by using the specimen automatic blowing device of claim 1 to improve the iron loss of high magnetic flux density oriented electrical steel sheet,
Charging a shot ball to a rotating drum provided in the automatic sample blowing device, and then moving the automatic sample blowing device to a warm rolling heat treatment furnace to heat the shot ball embedded in the rotating drum within a heat treatment temperature range;
After the shot ball is heated within the heat treatment temperature range, removing the specimen automatic blowing device from the warm rolling furnace;
Mounting a specimen on a specimen mounting case of a rotating drum of the specimen automatic blowing device;
Rotating the drum for rotation so that the shot ball is supplied into the specimen after the specimen is mounted in the specimen mounting case; And
Injecting the specimen automatic blowing device equipped with the rotated rotating drum into the warm rolling heat treatment furnace to heat treat the specimen; Uniformity of temperature deviation of the specimen using a warm rolling heat treatment specimen automatic blowing device comprising a. 10. The method of claim 9,
The temperature of the shotball is a uniform temperature deviation method of the specimen using the warm-rolled heat treatment specimen automatic blowing device, characterized in that measured by a thermocouple.

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