KR102353899B1 - Multi cell Continuous Heat Treatment Furnace - Google Patents

Abstract

The present invention relates to a heat treatment furnace for performing heat treatment through a pallet (1) mounted with a large amount of products, and as a feature of its configuration, a movable table (13) movable through a roller (12) on a guide rail (11) is provided. and a supply unit 10 having a cart 16 for loading and unloading by seating the pallet 1 on the moving table 13; A quenching unit 20, which is installed adjacent to the supply unit 10 to be able to move up and down while linearly transporting the pallet 1, and having a quenching tank 25 for quenching by accommodating the pallet 1 directly below; A heating unit ( 30); and control to set to continuously circulate in interlocking with each of the units 10, 20, and 30, and to control each of the motors 15, 18, 24, 38, cylinders and sensors unit; characterized in that it comprises a.
Accordingly, the present invention not only induces stabilization and smooth flow between processes through a plurality of heating chambers and movable quenching tanks in the facility, but also reduces the gap between processes to enable integrated production management, such as working time, manpower, additional management, etc. Minimizes and maximizes space utilization for each device, thereby reducing facility costs and maintaining hygienic maintenance. This has the effect of enhancing competitiveness by reducing production cost as well as product yield.

Description

Multi-cell Continuous Heat Treatment Furnace

The present invention relates to a multi-cell type continuous heat treatment furnace for improving mechanical strength, such as hardness, toughness, fatigue strength, etc. and abrasion resistance, of metal products for parts such as automobiles, machines, and ships, and more specifically, to a plurality of Through the heating chamber and the movable quenching tank, it not only induces stabilization and smooth flow between processes, but also reduces the gap between processes, enabling integrated production management, minimizing working time, manpower, and additional management, and maximizing space utilization according to equipment. It can be maintained hygienically while reducing equipment cost, and it can produce excellent products in an optimized state through short waiting time and improve workability as well as safe and thorough work, resulting in product yield and competitiveness by reducing production costs It relates to a multi-cell type continuous heat treatment furnace that improves the

In general, heat treatment processes such as carburizing, quenching, and tempering are essential for the purpose of strengthening the structure or hardening the surface after machining at the site of machining parts using metal. However, in the case of such a heat treatment process, it is necessary to heat through a high temperature of a certain temperature and to perform work through quenching of a high-temperature product, but because a high-temperature product must be worked, it poses a safety risk and it is difficult to work with a large number of products. However, there is a problem that the work rate is significantly reduced through the long waiting time.

Accordingly, as the supply of vacuum heat treatment furnaces has increased significantly in recent years, most of the high-speed tool steels that have been quenched in conventional salt bath furnaces are being processed in vacuum furnaces. In this case, it is common to programmatically control the temperature and atmosphere in the furnace, but automation of the process according to charging and extraction is also important in terms of productivity. And, in the quenching process at the end of the heat treatment, rapid cooling by quenching prevents changes occurring inside the metal or alloy and maintains a stable state, and it is important to continuously and automatically perform this operation.

There are batch heat treatment furnaces and continuous heat treatment furnaces as heat treatment furnaces for heat treatment of materials such as metals, and among continuous heat treatment furnaces, rollers are used to transfer materials The rollerhus kiln is mainly used. The roller hearth kiln has the advantage that heat treatment proceeds while the material moves, and thus heat treatment can be performed continuously, but it has disadvantages in that it requires a large installation area and is expensive compared to a batch type heat treatment furnace.

As related prior art, Korean Patent Publication No. 10-0722009 (Prior Document 1), Korean Patent Publication No. 10-0892409 (Prior Document 2), and Korean Patent Application Laid-Open No. 10-2014-0059369 (Prior Document 1) 3), Korean Utility Model Publication No. 20-0482078 (Prior Document 4), etc. are known.

Prior Document 1 discloses a heat treatment furnace body configured in multiple stages for heat treatment of a material substrate, a mounting unit including a vacuum suction means for mounting the transferred material substrate on a setter, and a first heating of the setter on which the substrate is mounted A first vertical transfer unit for transporting to the unit and vertically transferring the substrate withdrawn from the second heating unit to the cooling unit, a setter/substrate separation unit for separating the setter and the substrate to transfer only the substrate to the cooling unit, and mounted on the setter It is configured to include a second vertical transfer unit for vertically transferring the setter and the substrate downward after the substrate is heat-treated in the heating unit.

Prior Document 2 discloses that in the process of heating a metal material in a heating furnace, cooling it in a constant temperature heat treatment device, and heat treating a tempering metal material, the constant temperature heat treatment device is located behind the cooling device 1 and the cooling device 1 . It consists of a constant temperature furnace (4) to be installed, and the cooling device (1) includes an air supply device (2) on the wall of the cooling device (1), and a damper device (3) on the upper portion of the cooling device (1). is installed, the heating device 10 is installed in the constant temperature furnace 4, and the air supply device 2 is provided with air hoses 6 installed on the left and right sides of the outer wall of the cooling device 1, It is configured to communicate with the inner wall 12 of the cooling device 1, and an air hole 7 through which air is discharged is formed in the inner wall 12 at an angle of 45 degrees upward, so that the product to be treated is not blown directly. It is characterized in that the heater 11 is arranged side by side in a band shape horizontally and vertically on both sides of the inner wall of the constant temperature furnace 4, so that the heating temperature and the heating position can be selectively performed.

Prior Document 3 is Noche; and a heating unit provided with a plurality of heating layers in the furnace body and recycling the exhaust gas from one heating layer in the other heating layer.

Prior Document 4 is a multi-layer heating furnace in which a plurality of heat treatment chambers are formed by dividing the inside of the furnace 6 in the vertical direction by a heat insulating wall 7 , wherein the heat insulating wall 7 extends over the furnace wall 4 . It consists of a supporting member 8 placed on the supporting member 8, and a plurality of heat insulating layers 12, 13, 14, and 15 disposed on the supporting member 8, and each heat insulating layer includes a plurality of heat insulating blocks 9 in parallel to the front, back, left and right. It is constituted by arranging, and the joint between the heat insulating blocks 9 in the adjacent layer and the joint between the heat insulating block 9 and the furnace wall 4 in the adjacent layer are displaced on a vertical line, respectively.

However, looking at the preceding documents, the configuration of the heat treatment furnace is complicated and it is difficult to transfer the material to transfer a relatively high weight material. There are disadvantages in that the production cost is high and the integrated production management (work time, manpower, additional management, etc.) is insufficient because it does not induce a smooth flow between processes.

Korean Patent Publication No. 10-0722009 "Heat Treatment Furnace" (Registration Date: 2007.05.18.) Korean Patent Publication No. 10-0892409 "A device for constant temperature heat treatment of metal materials" (Registration date: 2009.04.01.) Korean Patent Laid-Open Publication No. 10-2014-0059369 "Multi-stage heat treatment furnace" (published on: May 16, 2014) Korean Utility Model Publication No. 20-0482078 "Multi-Layer Heating Furnace" (Registration Date: 2016.12.06.)

An object of the present invention for fundamentally improving the problems of the prior art is to induce stabilization and smooth flow between processes through a plurality of heating chambers and a movable quenching tank in a facility, as well as reduce the gap between processes to manage integrated production It is possible to minimize work time, manpower, additional management, etc., and maximize space utilization according to the device, thereby reducing facility costs and maintaining hygienic maintenance. The goal is to provide a multi-cell continuous heat treatment furnace that enhances competitiveness by reducing production costs and product yield through safe and thorough work as well as improving production and workability.

In the present invention for achieving the above object, in a heat treatment furnace for performing heat treatment through a pallet loaded with a large amount of product: a moving table movable through a roller on a guide rail is provided, and the pallet is seated on the moving table and charged and a supply unit having a bogie for loading; a quenching unit installed adjacent to the supply unit so as to be able to ascend and descend while linearly transporting the pallet, and having a quenching tank for quenching by accommodating the pallet; a heating unit installed to be arranged on the guide rail of the quenching unit and having a plurality of heating chambers for performing heat treatment by loading pallets by a driving motor; and a control unit that is set to continuously circulate by interworking with each of the units, and is set to control each motor, cylinder and sensor; and a moving motor that makes the pallet move, a feed roller that supports the pallet by seating it on the bogie, and a driving motor that generates a conveying force to load and unload the pallet, wherein the heating unit is installed in at least one heating chamber, inside the heating chamber A feed roller for loading and unloading pallets by seating them, and a driving motor for generating a conveying force for loading and unloading pallets from the feed roller, wherein the control unit includes a supply unit and a quenching unit from a plurality of heating chambers to a moving motor By continuously and organically repeating a series of operations such as loading pallets by the drive motor and loading the pallets completed work from the heating room, loading into the quenching tank by the elevating cylinder, and loading new pallets into the heating room, while moving left and right. It is characterized in that it is set to proceed.

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In addition, the quenching unit according to the present invention is a moving motor that generates a driving force for left and right movement through rollers on a guide rail, a lifting cylinder that lifts and lowers pallets in a vertical direction on a quenching tank, and a door on the quenching tank It characterized in that it is provided with an opening and closing cylinder for opening and closing.

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On the other hand, prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should understand the concept of the term in order to explain his invention in the best way. Based on the principle that it can be appropriately defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

As described in the above configuration and operation, the multi-cell type continuous heat treatment furnace according to the present invention induces stabilization and smooth flow between processes through a plurality of heating chambers and a movable quenching tank in the facility, as well as reducing the gap between the processes to provide an integrated Production management is possible, minimizing work time, manpower, additional management, etc., maximizing space utilization according to equipment, reducing equipment costs while hygienic maintenance is possible, and products are optimized through short waiting time It not only produces excellent products and improves workability, but also provides the effect of enhancing competitiveness by reducing product yield and production cost through safe and thorough work.

1 and 2 are block diagrams showing that the supply unit and the quenching unit of the multi-cell type continuous heat treatment furnace according to the present invention are sequentially transferred onto the heating unit.
3 to 5 are diagrams sequentially showing that the quenching unit of the multi-cell type continuous heat treatment furnace according to the present invention can be quenched.

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

The present invention proposes a heat treatment furnace for performing heat treatment through a pallet (1) mounted with a large amount of products. In particular, the supply unit 10, quenching unit 20, heating unit 30, and a series of loading and unloading pallets 1 loaded with a large amount of products into a plurality of heating chambers and a movable quenching tank by the control unit. It relates to a multi-cell continuous heat treatment furnace that performs heat treatment (improving mechanical properties such as hardness, abrasion resistance, impact resistance, toughness, fatigue strength, etc. of metal products) by repeating the operation continuously and organically.

According to the present invention, the supply unit 10 is provided with a movable table 13 movable through the roller 12 on the guide rail 11, and the pallet 1 is seated on the movable table 13 for loading and unloading. A bogie 16 is provided. The supply unit 10 serves to allow the worker to seat the pallet 1 on which a large amount of products is mounted so that it can be supplied to the quenching unit 20 to be described later. As shown in FIGS. 1 and 2 , a moving table 13 is installed on the guide rail 11 to move the supply unit 10 in the horizontal direction (left and right direction in the drawing) through the roller 12 . And on the moving table 13, a cart 16 for supplying the pallet 1 to the quenching unit 20 is provided. The completed pallet 1 is taken out from the quenching unit 20, and a detailed description thereof will be described later.

At this time, according to the detailed configuration of the present invention, the supply unit 10 is supported by seating and supporting the moving motor 15 that generates a driving force for the left and right movement of the moving table 13 and the pallet 1 on the bogie 16 . It is characterized in that it is provided with a drive motor 18 that generates a feed force to load and unload the feed roller 17 and the pallet (1). As described above, the supply unit 10 is provided with a moving motor 15 that transmits a driving force for moving the moving table 13 in the horizontal direction (left and right direction in the drawing). A bogie 16 is installed on the moving table 13, and the bogie 16 is provided with a feed roller 17 to seat and support the pallet 1, and transport the pallet 1 for loading and unloading. A driving motor 18 for generating a force is provided.

On the other hand, although not indicated by reference numerals, the bogie 16 is a pusher for transferring the pallet 1 seated from the feed roller 17, and is connected to the drive motor 18 by a chain to impart a transfer force to the pusher. Provides transfer power.

In addition, according to the present invention, the quenching unit 20 is adjacent to the supply unit 10 and is installed so as to move up and down while linearly transporting the pallet 1, and a quenching tank that receives and quenches the pallet 1 directly below. (25) is provided. The quenching unit 20 operates in conjunction with the supply unit 10 as shown in FIGS. 1 and 2 , and receives the pallet 1 supplied from the supply unit 10 and is charged into the heating unit 30 to be described later. It plays a role of loading the completed pallet (1) from the heating unit (30), charging it into the quenching tank (25), quenching, and loading the completed pallet (1) back to the supply unit (10). This quenching unit 20 operates in conjunction with the supply unit 10 to be movable in the horizontal direction (left and right direction in the drawing), and at the same time adjacent to the supply unit 10, the pallet 1 is installed so as to be able to be transported in a straight line. do. On the other hand, the quenching unit 20 receives the pallet (1) supplied from the supply unit (10) to be charged into the heating unit (30), like the supply unit (10), a separate feed roller (not given) be prepared With this, the quenching unit 20 is provided with a quenching tank 25 for quenching by accommodating the pallet 1 directly below as shown in FIGS. 3 to 5 , a detailed description thereof will be described later.

That is, the quenching unit 20 is a movable type that moves in the horizontal direction (left and right direction in the drawing) as in the supply unit 10 as in FIGS. 1 to 5 , and one quenching tank 25 is installed and a heating unit to be described later. Three heating chambers 31 of (30) are installed so that charging and quenching of the pallet 1 loaded with a large amount of products is possible. The pallet (product) completed from (31) is charged into the quenching tank (25) and quenched, as well as the quenched pallet (product) is loaded back into the supply unit (10).

At this time, according to the detailed configuration of the present invention, the quenching unit 20 is a moving motor 24 that generates a driving force for left and right movement through the roller 22 on the guide rail 21, and a pallet on the quenching tank 25 (1) It is characterized in that it is provided with a lifting cylinder (26) for elevating the lift (26a) in the vertical direction, and an opening and closing cylinder (28) for opening and closing the door (27) on the quenching tank (25). The quenching unit 20 is installed on the guide rail 21 in the same way as the supply unit 10, moves in the horizontal direction (left and right in the drawing) through the roller 22, and a moving motor that transmits a driving force for movement (24) is installed.

And the quenching unit 20 serves to transfer the pallet 1 moved from the supply unit 10 to any of the plurality of heating chambers 31 of the heating unit 30 while accommodating it, but the heating unit The pallet (1) completed from (30) is again accommodated in the quenching tank (25) to enable quenching. A quenching tank 25 for accommodating and quenching the pallet 1 is provided directly below the quenching unit 20, and a lift 26a and a lifting cylinder 26 are installed on the quenching tank 25 to provide a pallet ( 1) is charged and unloaded by elevating in the vertical direction. In addition, in the quenching tank 25 , a door 27 is formed in the charging direction and the ejecting direction of the pallet 1 , respectively, and the door 27 is opened and closed by the opening/closing cylinder 28 .

In addition, according to the present invention, the heating unit 30 is installed to be arranged on the guide rail 21 of the quenching unit 20, and the pallet 1 is loaded by the driving motor 38 to perform heat treatment. of the heating chamber 31 is provided. The heating unit 30 works in conjunction with the quenching unit 20 as shown in FIGS. 1 to 5 to receive the pallet 1, heat it, and then load it back to the quenching unit 20. The heating unit 30 is provided with a plurality of heating chambers 31 from one quenching unit 20, and the heating chambers 31 are respectively installed adjacent to the guide rails 11 and 21. Meanwhile, in the heating chamber 31, the pallets 1 supplied from the quenching unit 20 are loaded and the pallets 1 on which the work is completed are loaded, and a detailed description thereof will be described later.

At this time, according to the detailed configuration of the present invention, the heating unit 30 is a heating chamber 31 installed at least one or more, and a feed roller 33 for loading and unloading the pallet 1 by seating the pallet 1 inside the heating chamber 31 . ), characterized in that it is provided with a drive motor 38 for generating a conveying force in order to load and unload the pallet (1) from the feed roller (33). At least one heating chamber 31 is installed in the heating unit 30 adjacent to the guide rails 11 and 21 as described above. On the other hand, although the drawing shows three heating chambers 31 based on one quenching tank 25, this will not be limited. Of course, it would be desirable to install one quenching tank 25 and three heating chambers 31 to induce stabilization and smooth flow between processes. And the heating chamber 31 is provided with a feed roller 33 for seating and supporting the pallet 1 therein, and a drive that generates a conveying force to load and unload the pallet 1 from the feed roller 33 . A motor 38 is provided.

In addition, according to the present invention, the control unit is set to be continuously circulated by interworking with each of the units 10, 20, 30, and each of the motors 15, 18, 24, 38 and the cylinder and set to control the sensor. Although not shown in the drawings, the control unit interworks with each of the units 10, 20, and 30, that is, the supply unit 10, the quenching unit 20, and the heating unit 30, which Controlling the heat treatment by continuously and organically repeating a series of operations such as charging and discharging the pallet 1 on which the product is mounted into a plurality of heating chambers 31 and one movable quenching tank 25 while controlling , driving the moving motor 15 and driving motor 18 of the supply unit 10, the moving motor 24 and the lifting cylinder 26 of the quenching unit 20, the opening/closing cylinder 28, and the heating unit 30 Although not indicated by reference numerals as well as the motor 38, each supply unit 10, quenching unit 20, and a sensor for interworking with the heating unit 30 are controlled to perform the heat treatment as described above. A detailed description thereof will be provided later.

At this time, according to the detailed configuration of the present invention, the control unit is a driving motor ( 18) By (38), the pallet (1) is charged and the pallet (1) whose work is completed in the heating chamber (31) is loaded and at the same time charged into the quenching tank (25) by the elevating cylinder (26), the heating chamber (31) ) is characterized in that it is set to continuously and organically repeat a series of operations such as charging a new pallet (1). The control unit includes a supply unit 10 and a quenching unit 20 from a plurality of heating chambers 31 and a quenching tank 25, a guide rail 11, 21, rollers 12, 22, and a moving motor 15. ) (24) moves to each heating chamber (31), and by means of drive motors (18, 38), the pallet (1) on which a large amount of products is mounted for heat treatment is transferred to the feed rollers (17, 33). At the same time loading and unloading the pallet (1) on which the work has been completed in the charging and heating chamber (31), it is charged into the quenching tank (25) by the elevating cylinder (26) and the lift (26a) and for heat treatment in the heating chamber (31) It is set to continuously and organically repeat a series of operations, such as loading a new pallet 1 loaded with a large amount of products, and a detailed description thereof will be described later.

In the overall process cycle of the multi-cell type continuous heat treatment furnace using FIGS. 1 to 5 , it is described using three heating chambers 31 and one movable quenching tank 25 as an example. do.

First, when the first pallet (1) loaded with a large amount of products for heat treatment is seated on the cart (16) of the moving table (13) in the supply unit (10), the feed roller (17) and the drive motor (18) It is charged into the quenching tank 25 of the quenching unit 20 by the Then, while being charged into the quenching tank 25, it is accommodated in the first heating chamber 31 of the right heating unit 30 of FIG. 1 to proceed with the heat treatment. Then, when the second pallet (1) loaded with a large amount of products is again seated on the cart (16) of the supply unit (10), the quenching unit (20) is sorted by the feed roller (17) and the driving motor (18). It is accommodated in the No. 2 heating chamber 31 of the heating unit 30 through the mouth tank 25 to proceed with the heat treatment.

And when the 3rd pallet (1) loaded with a large amount of products is again seated on the cart (16) of the supply unit (10), the quenching tank of the quenching unit (20) by the feed roller (17) and the driving motor (18) Through (25), it is accommodated in the No. 3 heating chamber 31 of the heating unit 30 to proceed with the heat treatment. Then, the supply unit 10 is moved to the heating chamber 31 by the guide rail 11 and the roller 12, and the first pallet 1 on which the heat treatment is completed is transferred to the feed roller 33 and the driving motor. While loading by (38), the first pallet (1) is lowered by the lift (26a) and the elevating cylinder (26) to the quenching tank (25) of the quenching unit (20) to proceed with quenching.

Meanwhile, during the above operation, the supply unit 10 and the quenching unit 20 are each heated in the heating chamber 31 by the guide rails 11 and 21, the rollers 12 and 22 and the moving motors 15 and 24. ), the door 27 of the quenching tank 25 is opened and closed by the opening/closing cylinder 28 while moving.

Next, the first pallet 1 after quenching is completed from the quenching tank 25 of the quenching unit 20 is lifted by the lift 26a and the lifting cylinder 26 to the supply unit. (10) is loaded and unloaded, and at the same time, when the 4th pallet (1) loaded with a large amount of products is again seated on the cart (16) of the supply unit (10), the feed roller (17) and the drive motor (18) is accommodated in the first heating chamber 31 of the heating unit 30 through the quenching tank 25 of the quenching unit 20 by the heat treatment.

Then, the supply unit 10 moves to the second heating chamber 31 by the guide rail 11 and the roller 12 to load the second pallet (1) on which the heat treatment has been completed, while the quenching unit 20 The quenching unit together with the plurality of heating chambers 31 of the heating unit 30 as the second pallet 1 is lowered by the lift 26a and the lifting cylinder 26 to the quenching tank 25 of the quenching unit and quenching is performed. Since the quenching tank 25 of (20) can be continuously and organically repeatedly heat-treated, the work rate is greatly improved through the minimum waiting time.

Of course, for the continuous and repeated heat treatment as described above, the supply unit 10, the quenching unit 20, and the heating unit 30 are interconnected, which is a plurality of heating chambers (1) loaded with a large amount of products ( 31) and one movable quenching tank 25, by continuously and organically repeating a series of operations, such as charging and discharging, to complete the heat treatment.

As such, the present invention not only induces stabilization and smooth flow between processes through a plurality of heating chambers and a movable quenching tank in the facility, but also reduces the gap between processes to enable integrated production management, such as working time, manpower, additional management, etc. Minimizes and maximizes space utilization for each device, so it can be maintained hygienically while reducing facility costs. This improves competitiveness by reducing production cost as well as product yield.

The present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, it should be said that such variations or modifications fall within the scope of the claims of the present invention.

1: Pallet 10: Supply unit
11: guide rail 12: roller
13: moving table 15: moving motor
16: bogie 17: feed roller
18: drive motor 20: hardening unit
21: guide rail 22: roller
24: moving motor 25: quenching tank
26: elevating cylinder 27: door
28: opening/closing cylinder 30: heating unit
31: heating chamber 33: feed roller
38: drive motor

Claims (5)

In a heat treatment furnace for performing heat treatment through a pallet (1) loaded with a large amount of products:
A supply unit ( 10);
A quenching unit 20, which is installed adjacent to the supply unit 10 to be able to move up and down while linearly transporting the pallet 1, and having a quenching tank 25 for quenching by accommodating the pallet 1 directly below;
A heating unit ( 30); and
A control unit that is set to continuously circulate by interworking with each of the units 10, 20, and 30, and to control each of the motors 15, 18, 24, 38, cylinders and sensors is made, including
The supply unit 10 includes a moving motor 15 for generating a driving force for left and right movement of the moving table 13, a feed roller 17 for seating and supporting the pallet 1 on the bogie 16, and a pallet (1) is provided with a drive motor 18 that generates a feed force to charge and unload,
The heating unit 30 is a heating chamber 31 installed at least one or more, a feed roller 33 for loading and unloading the pallet 1 by seating the pallet 1 inside the heating chamber 31, and a pallet from the feed roller 33 (1) is provided with a drive motor 38 for generating a conveying force to charge and unload,
In the control unit, the supply unit 10 and the quenching unit 20 from a plurality of heating chambers 31 are moved left and right by the moving motors 15 and 24 while the drive motors 18 and 38 move the pallet ( 1) is charged and the pallet (1) whose work has been completed in the heating chamber (31) is unloaded, and at the same time, it is charged into the quenching tank (25) by the elevating cylinder (26), and a new pallet (1) is charged into the heating chamber (31). A multi-cell type continuous heat treatment furnace, characterized in that it is set to continuously and organically repeat a series of operations such as delete According to claim 1,
The quenching unit 20 lifts the pallet 1 vertically on the quenching tank 25 and the moving motor 24 that generates a driving force for left and right movement through the roller 22 on the guide rail 21 ( A multi-cell type continuous heat treatment furnace, characterized in that it includes a lifting cylinder 26 for riding up and down, and an opening/closing cylinder 28 for opening and closing the door 27 on the quenching tank 25. delete delete

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