KR101883469B1 - Heat treatment apparatus for metal plate - Google Patents

Abstract

A heat treatment apparatus for a metal plate according to the present invention comprises: an unwinding member for unwinding and supplying a metal plate wound in a roll state; a guide member for linearly guiding the metal plate transferred from the unwinding member; a first heat treatment member for heating the metal plate transferred from the guide member to a predetermined first temperature range; a deformation prevention member for linearly guiding the metal plate transferred from the first heat treatment member while heating the metal plate; a first cooling roller part for performing cooling while linearly guiding the metal plate by making a contact with the metal plate transferred from the deformation prevention member; a second heat treatment member for heating the metal plate transferred from the first cooling roller part to a predetermined second temperature range; a second cooling roller part for linearly guiding the metal plate by making a contact with the metal plate transferred from the second heat treatment member; a pressing roller part for pressing and unfolding the metal plate transferred from the second cooling roller part; and a winding member for winding the metal plate transferred from the pressing roller part. According to the present invention, the shape deformation of the metal plate to be heat-treated can be prevented, and the deformation or breakage caused by heat treatment can be prevented even in a long-term operation. In addition, the present invention can prevent harmful gas from being discharged into a workplace and improve heat treatment quality by preventing foreign substances from being attached to a heat-treated object.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat treatment apparatus for a metal plate,

The present invention relates to a heat treatment apparatus, and more particularly, to a heat treatment apparatus for preventing the deformation of a heat treatment furnace, deformation or breakage of a heat treatment furnace, .

In general, various parts and metal products made of steel are heat treated to increase their strength.

In the case of the gas softening method which is one of the heat treatment processes, the material is heated to a high temperature in an atmosphere of ammonia, nitrogen, and carbon dioxide and then cooled. During this process, nitrogen and carbon are permeated into the surface of the material.

Thus, it has properties of high surface hardness, abrasion resistance, and corrosion resistance compared to the characteristics inherent to the non-heat treated material

The carburizing method is a method in which the material is heated to a high temperature and then cooled in an atmosphere of methanol, propane gas or nitrogen.

The cooling during the heat treatment process may be performed by immersing the material in cooling oil or spraying nitrogen gas.

The heat treatment furnace used in the above-mentioned heat treatment process is constructed such that refractory bricks are laminated inside to increase the heat insulating performance. The heat treatment furnace is formed by burning gas supplied from the outside or heat- do.

When air or other foreign substances enter the heat treatment furnace, hydrogen embrittlement or nitrogen embrittlement due to oxygen or nitrogen may be generated, and foreign substances may adhere to the surface of the heat treatment subject.

Since the inside of the heat treatment furnace is usually heated to a high temperature around 1000 占 폚, the entire shape deformation of the heat treatment furnace may be caused by the elapse of a long period of time, thereby causing deformation of the material passing through the furnace.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat treatment apparatus for a metal plate which is capable of preventing deformation during heat treatment of a metal plate.

Another object of the present invention is to provide a heat treatment apparatus for a metal plate which is configured to prevent deformation or breakage of a heat treatment furnace even during long-term operation.

It is still another object of the present invention to provide a heat treatment apparatus for a metal plate which is configured to prevent foreign matter from adhering to a heat treatment object.

It is still another object of the present invention to provide a heat treatment apparatus for a metal plate which is configured to prevent the discharge of harmful gas into a workplace.

According to an aspect of the present invention, there is provided an apparatus for heat treating a metal plate, comprising: an unwinding member for uncoiling a metal plate wound in a roll state; a guide member for linearly guiding the metal plate, A deformation preventing member for linearly guiding the metal plate material transferred from the primary heat treatment member while heating the metal plate material; A first cooling roller unit for contacting the metal plate conveyed from the primary cooling roller unit to linearly guide the metal plate and cooling the metal plate, And a second heat treatment member which is in contact with the metal plate, And a winding member for winding the metal plate conveyed from the pressing roller unit. The first cooling roller unit includes a first cooling roller unit, a second cooling roller unit, and a second cooling roller unit.

Preferably, the primary heat treatment member includes a preliminary heat treatment unit for heating the metal plate to a temperature lower than the first temperature range, and the preliminary heat treatment unit is kept in a vacuum state by the combustion of the fuel.

The unwinding member includes a circular plate for supporting the metal plate, and a contact pressing member for contacting the metal plate at the upper portion of the circular plate, wherein the end of the contact pressing member is a roller made of an elastic material And can be brought into rolling contact with the circular plate.

Further, a roller portion which is elastically supported can be provided at an end of the contact pressing member.

The guide member may include a first guide member and a second guide member, and the first guide member and the second guide member may be provided with foreign matter removing members formed at different weaving densities.

The primary heat treatment member may include a metal member housing and a partition member for partitioning the heat insulating member stacked in the housing.

Here, the partition member may be formed in a "C" shape on a side end face, and a cutout portion may be formed in a portion of the partition member which is in contact with the housing.

In addition, the primary heat treatment member may be provided with a safety valve interlocking with the internal space.

Here, the safety valve unit may be provided with a gas combustion unit for burning a gas component in the primary heat treatment member.

The deformation preventing member includes an upper housing and a lower housing, and the upper housing or the lower housing is provided with a guide portion for linearly guiding the metal plate, and a heating portion may be formed in the upper housing or the lower housing.

Here, the bolts are coupled to the upper housing and the lower housing, and the bolts may be detachably coupled to the fixing support.

Preferably, the primary cooling roller portion includes a pair of cooling rollers, and the pair of cooling rollers is formed with a trapezoidal concave portion and a convex portion for mutually interlocking to guide the metal plate material.

The pressure roller unit includes a pair of pressure rollers, and the surface of the pressure roller may be formed of a flexible synthetic resin material.

In addition, a guide roller for guiding a metal plate to the winding member is disposed in front of the winding member, and the guide roller includes a circular body portion and a cylindrical guide portion protruding from both sides of the body portion, The guide portions formed on both sides of the body portion may be formed in a cylindrical shape having different diameters.

On the other hand, a central partition member is disposed in the center of the partition member, and a slot may be formed in the central partition member at predetermined intervals.

A third guide member and a fourth guide member are provided in front of the secondary heat treatment member, and foreign matter removing members formed at different weaving densities may be disposed in the third guide member and the fourth guide member.

Preferably, the first guide member and the second guide member are disposed so as to face each other at predetermined intervals, and the concave grooves for guiding the metal plate members of the two guide members are arranged to be in alignment with each other.

In addition, an incision may be formed in the inlet and the outlet of the housing.

In addition, a guide support member is disposed behind the deformation preventing member, and the guide support member includes a support portion for supporting the metal plate at a lower portion thereof, and a guide rod provided to stand on the support portion.

According to the present invention, it is possible to prevent the shape deformation of the metal plate to be heat-treated.

Further, deformation or breakage of the heat treatment furnace can be prevented even during long-term operation.

In addition, it is possible to prevent the discharge of noxious gas into the workplace.

Further, it is possible to prevent foreign matter from adhering to the object to be heat-treated, thereby improving the quality of the heat-treatment.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a configuration diagram of a metal plate material heat treatment apparatus according to the present invention,
2 is a perspective view of an unwinding member included in the heat treatment apparatus,
3 is a perspective view of a guide member included in the heat treatment apparatus,
FIG. 4 is a perspective view of a preheating section included in the heat treatment apparatus,
5 is a perspective view of the primary heat treatment member in a state in which the partition members are disposed,
6 is a side view of the primary heat treatment member,
7 is a perspective view of a deformation preventing member included in the heat treatment apparatus,
8 is a perspective view of a cooling roller portion included in the heat treatment apparatus,
9 is a perspective view of a pressure roller portion included in the heat treatment apparatus,
10 is a perspective view of a guide roller included in the heat treatment apparatus.

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

Prior to this, the terms used in the specification and claims should not be construed in a dictionary sense, and the inventor may, on the principle that the concept of a term can be properly defined in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

FIG. 2 is a perspective view of an unwinding member included in the heat treatment apparatus, FIG. 3 is a perspective view of a guide member included in the heat treatment apparatus, and FIG. 4 is a cross- 6 is a side view of the primary heat treatment member, and Fig. 7 is a side view of the primary heat treatment member included in the heat treatment apparatus. Fig. 5 is a perspective view of the preheating treatment unit included in the heat treatment apparatus, FIG. 9 is a perspective view of a pressure roller portion included in the heat treatment apparatus, and FIG. 10 is a perspective view of a guide roller included in the heat treatment apparatus. FIG. to be.

1, the apparatus for heat-treating a metal plate according to the present invention comprises an unwinding member 10 for unwinding and feeding a metal plate 6, 8 wound in a roll state, A guide member 20 and 30 for linearly guiding the metal plate members 6 and 8 to be heated and a metal sheet member 6 and 8 delivered from the guide members 20 and 30 to a predetermined first temperature range A deformation preventing member 70 for linearly guiding the metal plate members 6 and 8 transferred from the primary heat treatment member 60 while heating the deformation preventing member 70, A first cooling roller unit 80 for cooling the metal plate member while linearly guiding the metal plate member in contact with the metal plate member transferred from the first cooling roller unit 80, A secondary heat treatment member (120) for heating, and a secondary heat treatment member A secondary cooling roller 120 for linearly guiding the metal plate in contact with the metal plate, a pressure roller 130 for pressing and spreading the metal plate conveyed from the secondary cooling roller 120, And a winding member 150 for winding the metal plate conveyed from the pressing roller unit 130.

The unwinding member 10 is configured to unwind and feed the metal sheet material in a state where the first metal sheet material is wound and arranged in a roll state.

The unwinding member 10 is preferably arranged two (2, 4) side by side so that a pair of metal sheets are unwound from the pair of unwinding members 2, 4.

2, the unwinding member 2 includes a circular plate 202 for supporting a metal plate and a contact pressing member 204 for contacting the metal plate on the circular plate 202 .

The contact pressing member 204 includes four bars formed in four directions with respect to a central axis 205, and the four bars are in contact with the side of a metal plate disposed in a roll state.

When the four bars of the contact pressing member 204 are in contact with the metal plate as described above, the contact pressing member 204 is also rotated as the metal plate is released.

At this time, since the contact pressing member 204 is rotated in contact with the side surface of the metal plate, the metal plate material disposed in the roll state is prevented from being unintentionally released by a large amount of spring force, Can be released.

An elastic member 206 such as a spring is disposed below the shaft 205 of the contact pressing member 204 so that the four bars included in the contact pressing member 204 are brought into constant contact with the side surface of the metal plate. Pressure.

In addition, the ends of the four bars in the contact pressing member are configured to be in rolling contact with the circular plate 202 via rollers formed of an elastic material such as rubber or foamed polyurethane.

If the contact pressure member 204 is in contact with the side of the metal plate with a strong pressure, the metal plate may not be loosened smoothly, but may be deformed in a process of being released.

In addition, if the contact pressure member 204 is in contact with the side of the metal plate with an excessively weak pressure, the metal plate material is unintentionally loosened by the spring force of the metal plate, Even when it is separated from the unwinding member 2.

Therefore, by the elastic member 206 disposed under the shaft 205 and the elastic roller provided at the end of the contact pressure member 204, the contact pressure member 204 is pressed against the metal plate So that the metal plate can be fed under proper bending tension, and can be smoothly released from the unwinding member 2.

The guide members 20 and 30 are configured to linearly guide the metal plates 6 and 8 that are unwound from the unwinding member 10 and are transmitted to the lower guide members 22 and 32 and the upper guide members 24, 34).

Concave grooves (23, 33) for guiding the metal plate are formed on any one of the lower guide members (22, 32) or the upper guide members (24, 34).

Here, the concave grooves 23 and 33 for guiding the metal plate members in the two guide members 20 and 30 are arranged to be aligned with each other.

A foreign matter removing member 26 formed of a woven cloth is disposed between the lower guide member 22 and the upper guide member 24.

Since the two guide members 20 and 30 are formed to face each other at a predetermined interval as described above, the metal plate material is linearly guided through the guide members 20 and 30, 20, and 30 are also in a straight line between the concave grooves 23, 33.

Thus, the metal plate material can be moved in a straight line in the region between the two guide members 20 and 30 so that the metal plate material fed and fed in the roll state is completely It can be flattened in a straight line.

The first guide member 20 and the second guide member 30 are respectively provided with foreign matter removing members 26 and 36 formed of cloths of different weaving density.

The first guide member 20 is provided with a foreign material removing member 26 formed of a woven fabric having a lower density than the foreign material removing member 36 disposed on the second guide member 30.

The second guide member 30 is provided with a foreign matter removing member 36 formed of a woven fabric having a higher weaving density and the foreign matter removing member 26 disposed on the first guide member 20 So that foreign matter having a large particle size present on the surface of the metal plate is primarily removed and fine foreign substances on the surface of the metal plate are removed through the foreign substance removing member 36 disposed on the second guide member 30.

The foreign matter removing member 26 disposed on the first guide member 20 may be formed of a synthetic resin fiber of hemp or rough texture and may be a foreign matter removing member disposed on the second guide member 30 36 may be made of a fabric formed of cotton or a soft synthetic resin material (for example, microfiber).

The primary heat treatment member 60 is configured to heat the metal plate received from the guide members 20 and 30 to approximately 900 to 1000 degrees.

The primary heat treatment member 60 shown in FIGS. 5 and 6 includes a partition 62 and a partition member 64 for partitioning the heat insulating member 63 stacked in the housing 62 .

The heat insulating member 63 may be made of, for example, refractory bricks and is configured to be stacked inside the metal housing 62 to minimize the transfer of heat to the outside.

The partition member 64 is configured to partition the heat insulating members 63 in the housing 62 and to prevent deformation of the housing 62 due to high temperature.

The partition member 64 is also formed of a metallic material such as a steel, and is formed in a shape of a " C "shape on a side end face and fixed to the inner surface of the housing 62.

The partition member 64 may be separated from the inner surface of the housing 62 due to thermal expansion due to high temperature or the partition member 64 itself may be deformed. A cutout portion 642 is formed in a portion of the end of the partitioning member 64 that is in contact with the inner surface of the housing 62 to enhance the effect of preventing deformation of the housing 62. [

A central partition member 66 is disposed at the central portion of the partition member 64 and a long hole 662 is formed at the predetermined interval in the central partition member 66 to prevent deformation due to high temperature, (62) and the partition member (64).

In addition, a cutout 622 is formed in the inlet and outlet portions of the housing 62 to prevent twisting or deformation of the inlet and outlet portions due to high temperature.

The housing 62 shown in FIG. 5 is overlapped by two upper and lower portions to form a heat treatment space, and the heat insulating members 63 are stacked in the heat treatment space to form a primary heat treatment member 60.

In the primary heat treatment member 60, a heat treatment object conveying roller (not shown) may be disposed.

As shown in FIG. 6, the primary heat treatment member 60 may be provided with a safety valve unit 68 interlocked with the internal space.

A diaphragm 684 capable of rupturing when the pressure exceeds a predetermined pressure is provided in the safety valve unit 68. When the pressure in the primary heat treatment member 60 is excessively increased, So that the internal pressure can be discharged.

The safety valve unit 68 is provided with a gas combustion unit 682 for burning gas components in the primary heat treatment member 60.

The gas combustion unit 682 is a unit for burning a gas component in the primary heat treatment member 60 by gas supply or electricity supply. By burning the gas component through the gas combustion unit 682, It is possible to prevent the unnecessary gas components from being deposited on the surface of the metal plate during the heat treatment process, and to prevent the gas components from leaking to the work site.

A preliminary heat treatment unit 50 for preliminarily heating the metal plate at a temperature lower than the first temperature range, for example, 500 to 600 degrees, may be provided in front of the primary heat treatment member 60.

The inside of the preliminary heat treatment unit 50 is supplied with a gas such as hydrogen and is burned so that the inside of the preliminary heat treatment unit 50 is maintained in a state close to a vacuum so that moisture or oxygen components remaining on the surface of the metal plate It is possible to prevent the foreign matter from adhering.

The metal plate material passed through the primary heat treatment member 60 is introduced into the deformation preventing member 70 shown in Fig.

The deformation preventing member 70 is configured to prevent deformation of the metal plate material heated to a high temperature in the primary heat treatment member 60. The deformation preventing member 70 has a structure for flatly spreading the metal plate materials 6, to be.

The deformation preventing member 70 includes an upper housing 74 and a lower housing 72. The upper housing 74 or the lower housing 72 is provided with a deformation preventing member 70 for linearly guiding the metal plates 6, A guide portion (guide groove) 73 is formed.

The metal plates 6 and 8 are spread flat in a straight line while passing through the guide portion 73. The metal plates 6 and 8 are arranged in the upper housing 74 or the lower housing 74 so as to maintain the flexibility of the metal plates 6 and 8. [ The housing 74 is provided with a heating portion 76.

The heating unit 76 may be composed of a heating wire and the inside of the deformation preventing member 70 may be maintained in the range of 200 to 230 degrees by the heating unit 76.

Thus, it is possible to prevent the metal sheet material drawn from the primary heat treatment member 60 from being rapidly cooled, but to flatten the metal sheet material in a linear state with a certain degree of flexibility.

The bolts 742 and 722 are detachably and firmly coupled to the fixed support 75 in a state where the bolts 742 and 722 are coupled to the upper housing 74 and the lower housing 72.

The upper housing 74 and the lower housing 72 are firmly fixed to the fixed support portion 75 through the bolts 742 and 722 so that the force of the metal plate material The positions of the upper and lower housings 74 and 72 are not disturbed.

A guide support member 78 is disposed behind the deformation preventing member 70 (at a position behind the deformation preventing member 70 with respect to the traveling direction of the metal plate), so that the metal plate is transported in a state in which the metal plate is maintained in a straight line.

The guide support member 78 is provided with a support portion 784 for supporting the metal plate at the bottom and a guide bar 782 installed at the support portion 784 in an upright state so that the metal plate is supported by the support portion 784 To the space between the guide rods (782).

The metal plate material having passed through the deformation preventing member (70) is supplied to the primary cooling roller unit (80).

The primary cooling roller portion 80 includes a pair of cooling rollers 82 and 84 formed of a metallic material such as stainless steel and the pair of cooling rollers 82 and 84 are provided with a pair of cooling rollers 82 and 84, The concave portion 842 and the convex portion 822 of the trapezoidal shape are formed to be mutually engaged.

Thus, even when the pair of cooling rollers 82 and 84 is driven for a long time, the metal plate member can be moved to a predetermined position (concave portion) without disturbing the mounting position between the two rollers 82 and 84.

Thus, the metal plate can be supplied to the secondary heat treatment member 110 without being deformed while being maintained in a straight line state.

A third guide member 90 and a fourth guide member 100 are provided in front of the secondary heat treatment member 110 between the primary cooling roller unit 80 and the secondary heat treatment member 110, The third and fourth guide members 90 and 100 have the same configuration as the first and second guide members 20 and 30.

Therefore, foreign matter removing members formed at different weaving densities may be disposed on the third guide member 90 and the fourth guide member 100.

By the third and fourth guide members 90 and 100, the metal plate material supplied to the secondary heat treatment member 110 can be supplied in a flat linear state.

Cooling oil may be supplied to the foreign matter removing members disposed on the third and fourth guide members 90 and 100 to uniformly supply the cooling oil to the surface of the metal plate by the capillary force of the foreign matter removing member.

The secondary heat treatment member 110 has the same structure as that of the primary heat treatment member 60 for tempering the metal plate, and the internal temperature is maintained at 350 to 380 degrees.

The high temperature brittleness of the metal plate can be alleviated through the secondary heat treatment member 110 and flexibility can be imparted.

A secondary cooling roller unit 120 is disposed behind the secondary heat treatment member 110 and the secondary cooling roller unit 120 has the same configuration as the primary cooling roller unit 80. [

Therefore, the secondary cooling roller portion 120 also has a trapezoidal concave portion and a convex portion.

The metal plate material that has passed through the secondary cooling roller unit 120 is supplied to the pressure roller unit 130.

The pressure roller unit 130 includes a pair of pressure rollers 132 and 134. The diameter of the pair of pressure rollers 132 and 134 is formed by a roller that is much larger than the cooling roller.

The surfaces of the pressure rollers 132 and 134 are formed of a resilient synthetic resin material such as rubber.

Further, the pressure rollers 132 and 134 are disposed in intimate contact with each other through the pressing member 136.

Thus, the metal plate material can be cooled while being spread flatly in the process of passing through the pressure rollers 132 and 134.

A guide roller 140 for guiding the metal plates 6 and 8 to the pair of winding members 152 and 154 is disposed in front of the winding member 150.

The guide roller 140 includes a circular body portion 142 and cylindrical guide portions 144 and 146 protruding from both sides of the body portion 142. The guide roller 140 is formed on both sides of the body portion 142, The guide portions 144 and 146 are formed in a cylindrical shape having different diameters.

The two metal plates 6 and 8 are transported while being supported by the guide portions 144 and 146 included in one guide roller 140 by the rotation of the guide roller 140, Respectively, of the winding members 152 and 154, respectively.

As described above, since the metal plate member is moved linearly and flatly through the entire heat treatment apparatus according to the present invention, heat treatment is performed to prevent twisting or deformation of the metal plate member.

While the present invention has been described with reference to the exemplary embodiments and the drawings, it is to be understood that the technical scope of the present invention is not limited to these embodiments and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations may be made without departing from the scope of the appended claims.

6, 8: Metal plate
10: Unwinding member
20, 30: first and second guide members
50: preliminary heat treatment unit
60: primary heat treatment member
70: deformation preventing member
80: primary cooling roller section
90, 100: third and fourth guide members
110: Secondary heat treatment member

Claims (19)

An unwinding member for loosening and feeding the metal plate wound in a roll state;
A guide member for linearly guiding the metal plate conveyed from the unwinding member;
A primary heat treatment member for heating the metal plate conveyed from the guide member to a predetermined first temperature range;
A deformation preventing member for linearly guiding the metal plate conveyed from the primary heat treatment member while heating the metal plate;
A primary cooling roller portion for contacting the metal plate conveyed from the deformation preventing member and cooling the metal plate while linearly guiding the metal plate;
A secondary heat treatment member for heating the metal plate conveyed from the primary cooling roller unit to a predetermined second temperature range;
A secondary cooling roller portion for guiding the metal plate in a straight line contact with the metal plate conveyed from the secondary heat treatment member;
A pressing roller unit for pressing and unfolding the metal plate conveyed from the secondary cooling roller unit;
And a winding member for winding the metal plate conveyed from the pressing roller unit. The method according to claim 1,
Wherein the primary heat treatment member includes a preliminary heat treatment unit for heating the metal plate to a temperature lower than the first temperature range,
Wherein the preliminary heat treatment unit is maintained in a vacuum state by combustion of fuel. The method according to claim 1,
Wherein the unwinding member comprises: a circular plate for supporting the metal plate;
And a contact pressing member for contacting the metal plate at the upper portion of the circular plate,
Wherein the end of the contact pressing member is in rolling contact with the circular plate through a roller formed of an elastic material. The method of claim 3,
Wherein a roller portion elastically supported is provided at an end of the contact pressing member. The method according to claim 1,
Wherein the guide member includes a first guide member and a second guide member,
Wherein the first guide member and the second guide member are provided with foreign matter removing members formed at different weaving densities. The method according to claim 1,
Wherein the primary heat treatment member comprises: a housing of a metallic material;
And a partition member for partitioning the heat insulating member stacked in the housing. The method of claim 6,
Wherein the partition member is formed in a shape of a " C "shape on a side end face, and a cut-out portion is formed in a portion contacting the housing at an end portion of the partition member. The method according to claim 1,
Wherein the primary heat treatment member is provided with a safety valve interlocking with the internal space. 9. The method of claim 8,
Wherein the safety valve unit is provided with a gas combustion unit for burning a gas component in the primary heat treatment member. The method according to claim 1,
The deformation preventing member includes an upper housing and a lower housing,
Wherein the upper housing or the lower housing is provided with a guide portion for linearly guiding the metal plate,
And a heating part is formed on the upper housing or the lower housing. 11. The method of claim 10,
Wherein the bolts are coupled to the upper housing and the lower housing, and the bolts are detachably coupled to the fixing support. The method according to claim 1,
Wherein the primary cooling roller portion includes a pair of cooling rollers, and the pair of cooling rollers are formed with a trapezoidal concave portion and a convex portion for mutually interlocking to guide a metal plate material. The method according to claim 1,
Wherein the pressure roller portion includes a pair of pressure rollers, and the surface of the pressure roller is formed of a resilient synthetic resin material. The method according to claim 1,
A guide roller for guiding the metal plate to the winding member is disposed in front of the winding member,
The guide roller has a circular body portion;
And a cylindrical guide portion protruding from both sides of the body portion,
Wherein the guide portions formed on both surfaces of the body portion are formed in a cylindrical shape having different diameters. 8. The method of claim 7,
Wherein a central partition member is disposed in a central portion of the partition member, and a slot is formed in the central partition member at predetermined intervals. The method according to claim 1,
A third guide member and a fourth guide member are provided in front of the secondary heat treatment member,
Wherein the third guide member and the fourth guide member are provided with foreign matter removing members formed at different weaving densities. 6. The method of claim 5,
Wherein the first guide member and the second guide member are arranged to face each other at a predetermined interval and the concave grooves for guiding the metal plate members of the two guide members are arranged so as to be in a straight line with each other. Heat treatment apparatus. The method according to claim 6,
And an incision is formed in an inlet and an outlet of the housing. The method according to claim 1,
Wherein the guide support member is disposed behind the deformation preventing member and the guide support member includes a support portion for supporting the metal plate from the lower portion and a guide rod installed in an upright position on the support portion, .

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