KR102654061B1 - Continious heating and cooling apparatus for martensitic stainless steel coil - Google Patents

Abstract

The continuous heat treatment and cooling device for martensitic stainless steel coil according to the present invention includes an unwinding member for unwinding and supplying a stainless steel coil wound in a roll, and an unfolding member for unfolding the stainless steel coil delivered from the unwinding member. and a primary heat treatment member for heating the stainless steel coil delivered from the spreading member to a first temperature range, and a primary cooling member for primary cooling the stainless steel coil delivered from the primary heat treatment member. , a secondary cooling member for secondary cooling the stainless steel coil delivered from the primary cooling member, and a secondary heat treatment member for heating the stainless steel coil delivered from the secondary cooling member to a second temperature range, It includes a pressure roller member for unfolding the stainless steel coil delivered from the secondary heat treatment member, and a winding member for winding the metal plate delivered from the pressure roller member, and in front of the primary heat treatment member is a device for burning foreign substances. A foreign matter removal member is installed, the foreign matter removal member is coupled to the front part of the transfer pipe disposed inside the primary heat treatment member, and a buffer member is coupled to the coupling portion where the foreign matter removal member is coupled to the transfer pipe. It is characterized in that it is configured to provide a buffering force to changes in the length of the transfer pipe.
According to the present invention, deformation or damage to the heat treatment furnace can be prevented even during long-term operation, and harmful gases can be prevented from being discharged into the workplace due to deformation or damage to the heat treatment furnace.
Additionally, by preventing the positions of the components from changing, deformation of the stainless steel coil can be prevented.

Description

Continuous heat treatment and cooling device for martensitic stainless steel coil {CONTINIOUS HEATING AND COOLING APPARATUS FOR MARTENSITIC STAINLESS STEEL COIL}

The present invention relates to a continuous heat treatment and cooling device for stainless steel coils, and more specifically, to continuous heat treatment and cooling of martensitic stainless steel coils, which are configured to prevent change in position due to deformation of components even in the case of long-term operation. It is an invention about a device.

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

In the case of gas soft nitriding, which is a heat treatment method, the material is heated to a high temperature under an ammonia, nitrogen, and carbon dioxide atmosphere and then cooled. During this process, nitrogen and carbon penetrate the material surface.

Therefore, it has higher surface hardness, wear resistance, and corrosion resistance compared to the inherent characteristics of materials that have not been heat treated.

And, the carburizing method is a method of heating the material to a high temperature and then cooling it under an atmosphere of methanol, propane gas, or nitrogen and hydrogen.

Cooling during the heat treatment process can be accomplished by immersing the material in cooling oil or spraying nitrogen and hydrogen gas.

The method of immersing the material in cooling oil, also called the direct cooling method, has the disadvantage of forming an oxide film on the surface of stainless steel, requiring separate post-processing to remove the oxide film.

The heat treatment furnace used for the above heat treatment is constructed to increase insulation performance by stacking refractory bricks on the inside, and heats the material passing inside the heat treatment furnace through combustion of gas supplied from the outside or heat generation by electricity supply. do.

If air or foreign substances enter the heat treatment furnace, hydrogen embrittlement or nitrogen embrittlement due to oxygen, hydrogen, or nitrogen may occur, and foreign substances may attach to the surface of the heat treatment object.

However, since the inside of the heat treatment furnace is usually heated to a high temperature around 1100℃, the overall shape of the heat treatment furnace may be deformed due to expansion and contraction of the pipe that transports the stainless steel coil over a long period of time, which may cause the inside of the heat treatment furnace to change. Gas may leak to the outside or damage to the furnace may occur.

The purpose of the present invention is to provide a continuous heat treatment and cooling device for martensitic stainless steel coil that is configured to prevent deformation or damage of the heat treatment furnace even during long-term operation.

Another object of the present invention is to provide a continuous heat treatment and cooling device for martensitic stainless steel coils configured to prevent displacement of components constituting the cooling device.

The continuous heat treatment and cooling device for martensitic stainless steel coil according to the present invention for achieving the above object includes an unwinding member for unwinding and supplying a stainless steel coil wound in a roll, and stainless steel delivered from the unwinding member. An unfolding member for unfolding the coil, a primary heat treatment member for heating the stainless steel coil delivered from the unfolding member to a first temperature range, and 1 for primary cooling the stainless steel coil delivered from the primary heat treatment member. A secondary cooling member, a secondary cooling member for secondary cooling of the stainless steel coil delivered from the primary cooling member, and a secondary cooling member for heating the stainless steel coil delivered from the secondary cooling member to a second temperature range. It includes a heat treatment member, a pressure roller member for spreading the stainless steel coil delivered from the secondary heat treatment member, and a winding member for winding the stainless steel coil delivered from the pressure roller member, and in front of the primary heat treatment member. A foreign matter removal member for burning foreign substances is installed, the foreign matter removal member is coupled to the front part of the transfer pipe disposed inside the primary heat treatment member, and the coupling portion where the foreign matter removal member is coupled to the transfer pipe is provided with a shock absorber. It is characterized in that the members are coupled and arranged to provide a buffering force to changes in the length of the transfer pipe.

Preferably, the coupling portion includes a first flange portion in the form of a square plate integrally formed at the front end of the foreign matter removal member, and a second flange portion in the form of a square plate integrally formed at the rear end of the transfer pipe, The first flange portion and the second flange portion are coupled by bolts and nuts, and a space is formed between the coupling portion and the front wall of the primary heat treatment member.

Here, the buffer member includes a rotating shaft for supporting the foreign matter removal member, a rope coupled to the coupling portion, and a weight coupled to an end of the rope, and the rope may be supported by the rotating shaft.

Additionally, the rotating shaft is supported by a bearing, and the rope may be coupled to both sides of the coupling portion.

Additionally, the rope may be formed by twisting a plurality of steel wires to form irregularities on the surface.

Preferably, a support roller for supporting the rope is coupled to the rotation axis, and the rope is supported by the support roller.

Here, concave portions may be formed on a contact surface of the support roller in contact with the rope in a direction perpendicular to the rope.

In addition, cut portions may be formed around the transfer pipe in the front wall of the primary heat treatment member.

Additionally, heat-resistant fiber may be disposed in a portion of the front wall through which the transfer pipe passes.

Additionally, a contact member made of fiber may be disposed in a portion of the foreign matter removal member through which the stainless steel coil passes.

Preferably, concave portions along the longitudinal direction of the rotation axis are formed at predetermined intervals along the entire circumference of the rotation axis.

Meanwhile, the rear end of the primary cooling member and the front end of the secondary cooling member are coupled by bolts and nuts, and the positions of the primary cooling member and the secondary cooling member are adjusted at the rear end of the secondary cooling member. A position adjustment member may be disposed to do this.

Here, the position adjustment member may include a bolt coupling portion standing upright at the rear of the secondary cooling member, and a long bolt coupled to the bolt coupling portion to support the rear end of the secondary cooling member.

In addition, the primary cooling member and the secondary cooling member are supported by a first support member and a second support member, respectively, and the first and second support members are connected to the primary cooling member and the secondary cooling member. The support surface in contact may be spaced apart from the floor and configured to allow air to flow to the lower part of the support surface.

Preferably, concave portions are formed on the support surfaces of the first and second support members along the longitudinal direction of the first and second cooling members.

Additionally, a through opening may be formed within the concave portion.

According to the present invention, deformation or damage to the heat treatment furnace can be prevented even during long-term operation.

Additionally, it is possible to prevent harmful gases from being discharged into the workplace due to deformation or damage to the heat treatment furnace.

Additionally, by preventing the positions of the components from changing, it is possible to prevent deformation of the conveyed stainless steel coil.

The attached drawings are intended to help you understand the technical idea of the present invention along with the detailed description of the invention, and therefore the present invention should not be construed as limited to the matters shown in the drawings.
1 is an overall configuration diagram of a continuous heat treatment and cooling device for martensitic stainless steel coil according to the present invention;
Figure 2 is a side view of the vicinity of the primary heat treatment member in the device;
Figure 3 is a perspective view of the foreign matter removal member included in the device;
Figure 4 is a perspective view of a buffer member according to another embodiment of the present invention;
Figure 5 is a perspective view of a buffer member according to another embodiment of the present invention;
Figure 6 is a front view of the buffer member portion,
Figure 7 is a front view of a support roller according to another embodiment of the present invention;
Figure 8 is a perspective view of the rope included in the buffer member,
Figure 9 is a perspective view of the primary cooling member and secondary cooling member included in the device;
Figure 10 is a perspective view of the primary cooling member portion,
Figure 11 is a perspective view of the secondary cooling member portion,
Figure 12 is a perspective view of the first and second support members included in the device according to another embodiment of the present invention.

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

Prior to this, the terms used in this specification and claims should not be construed limited to their dictionary meaning, and based on the principle that the inventor can appropriately define the concept of the term in order to explain his or her invention in the best way, , should be interpreted with meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention and do not express the entire technical idea of the present invention, so various equivalents that can replace them at the time of filing the present application It should be understood that variations and variations may exist.

Figure 1 is an overall configuration diagram of a continuous heat treatment and cooling device for martensitic stainless steel coil according to the present invention, Figure 2 is a side view of the vicinity of the primary heat treatment member in the device, and Figure 3 is a diagram showing the removal of foreign substances included in the device. It is a perspective view of a member portion, Figure 4 is a perspective view of a buffer member according to another embodiment of the present invention, Figure 5 is a perspective view of a buffer member according to another embodiment of the present invention, and Figure 6 is a front view of the buffer member portion. , Figure 7 is a front view of a support roller according to another embodiment of the present invention, Figure 8 is a perspective view of the rope included in the buffer member, and Figure 9 is a diagram of the primary cooling member and secondary cooling member included in the device. It is a perspective view, FIG. 10 is a perspective view of the primary cooling member portion, FIG. 11 is a perspective view of the secondary cooling member portion, and FIG. 12 is a first and second support according to another embodiment of the present invention included in the device. It is a perspective view of absence.

Referring to Figures 1 to 3, the non-oxidation continuous heat treatment and cooling device for martensitic stainless steel coil according to the invention includes an unwinding member (10) for unwinding and supplying a stainless steel coil (2) wound in a roll state; An unfolding member (20) for unfolding the stainless steel coil (2) delivered from the unwinding member (10), and a device for heating the stainless steel coil (2) delivered from the unfolding member (20) to a first temperature range. A primary heat treatment member 30, a primary cooling member 40 for primary cooling the stainless steel coil 2 delivered from the primary heat treatment member 30, and a primary cooling member 40 from the primary cooling member 40. A secondary cooling member (50) for secondary cooling of the stainless steel coil (2) delivered, and a second cooling member (50) for heating the stainless steel coil (2) delivered from the secondary cooling member (50) to a second temperature range. A heat treatment member 70, a pressure roller member 80 for spreading the stainless steel coil 2 delivered from the secondary heat treatment member 70, and a stainless steel coil delivered from the pressure roller member 80 ( 2), and includes a winding member 85 for winding, and a foreign matter removal member 90 for burning foreign substances is installed in front of the primary heat treatment member 30, and the foreign matter removal member 90 is installed in the first heat treatment member 30. It is coupled to the front part of the transfer pipe 110 disposed inside the heat insulating member 30, and the coupling portions 92 and 112, where the foreign matter removal member 90 is coupled to the transfer pipe 110, are provided with a buffer member ( 120) is coupled and arranged to provide a buffering force to changes in the length of the transfer pipe 110.

The unwinding member 10 is configured to unwind and supply a stainless steel coil wound and disposed in a roll state.

The unwinding members 10 may be arranged one or two side by side.

The unfolding member 20 is configured to unfold the stainless steel coil 2 that is unwound and delivered from the unwinding member 10.

By the unfolding member 20, the stainless steel coil supplied in a rolled state can be spread out straight and flat.

The primary heat treatment member 30 is configured to heat the stainless steel coil received from the unfolding member 20 to approximately 1100°C.

The primary heat treatment member 30 may be constructed by stacking refractory bricks inside a metal housing, thereby minimizing the transfer of heat inside the primary heat treatment member 30 to the outside.

A transfer pipe 110 for transferring the stainless steel coil may be disposed inside the primary heat treatment member 60.

And, the coil 2 heated by the primary heat treatment member 30 is primary cooled in the process of passing through the primary cooling member 40.

A mixed gas of nitrogen and hydrogen is supplied to the primary cooling member 40, and the coil 2 is cooled by the cold air of the mixed gas.

In addition, the stainless steel coil 2 passed through the primary cooling member 40 is cooled to a temperature close to room temperature by the secondary cooling member 50.

Cooling water is supplied to the secondary cooling member 50, and the coil 2 is cooled to around room temperature by the cold air of the cooling water.

The stainless steel coil 2 that has passed through the secondary cooling member 50 is spread out flat in the process of passing through the pressure roller member 60.

The pressure roller member 60 is configured to include a synthetic resin roller, and in the process of passing the coil 2 through the pressure roller member 60, the coil 2 is strongly pressed by the synthetic resin roller and is configured to spread out flatly. .

The coil 2 that has passed through the pressure roller member 60 is supplied to the secondary heat treatment member 70.

The secondary heat treatment member 70 is configured to tamper the coil 2 by heating it to approximately 300°C.

Through the tampering process through the secondary heat treatment member 70, high-temperature brittleness of the coil 2 can be alleviated and flexibility can be provided.

A pressure roller member 80 is also disposed at the rear of the secondary heat treatment member 70, so that the coil 2 is cooled while being spread flat as it passes through it.

The stainless steel coil 2 delivered from the pressing roller member 80 is wound around the winding member 85 and moved to the next destination.

Meanwhile, in the continuous cooling device according to the present invention, a foreign matter removal member 90 for burning foreign materials is installed in front of the primary heat treatment member 30.

Gas such as hydrogen is supplied to the inside of the foreign matter removal member 90 and burned, so that the inside is maintained in a state close to a vacuum.

Thus, it is configured to remove components such as moisture or oxygen remaining on the surface of the coil 2 passing through the foreign matter removal member 90 and burn foreign substances.

Since the inside of the foreign matter removal member 90 is maintained at approximately 500°C, it also serves to preliminarily heat the coil 2 before the coil 2 enters the primary heat treatment member 30. You can.

The foreign matter removal member 90 is coupled to the front part of the transfer pipe 110 disposed inside the primary heat treatment member 30, so that the coil 2 passing through the foreign matter removal member 90 is transferred. It moves inside the primary heat treatment member 30 along the pipe 110.

A coupling portion 92 for coupling with the transfer pipe 110 is integrally formed at the rear end of the foreign matter removal member 90.

The entire exterior of the foreign matter removal member 90 is formed of a metal material such as steel, and the coupling portion 92 is formed integrally with the rear end of the foreign matter removal member 90 like a flange in the form of a square plate. do.

Additionally, a coupling portion 112 is formed at the front end of the transfer pipe 110 toward the foreign matter removal member 90.

The front end and the rear end are based on the direction in which the coil 2 is moved. For example, the coil 2 is moved from the front end to the rear end of the foreign matter removal member 90.

The transfer pipe 110 may also be formed of a metal material such as steel, and the coupling portion 112 formed at the front end of the transfer pipe 110 is also a flange in the form of a square plate and is formed at the front end of the transfer pipe 110. is formed as a whole.

In addition, the two coupling parts 92 and 112 formed on the foreign matter removal member 90 and the transfer pipe 110 are firmly coupled with bolts and nuts.

At this time, a separation space S is formed between the coupling portions 92 and 112 and the front wall 32 of the primary heat treatment member 30.

The distance of the separation space (S) may be approximately 15 cm to 20 cm.

As described above, the inside of the primary heat treatment member 30 is heated to 1100°C. As the inside of the primary heat treatment member 30 is repeatedly heated and cooled to this temperature, the primary heat treatment occurs over a long period of time. A crack occurs in the front wall 32 of the member 30.

The inventor of the present invention believed that the cause of the cracks occurring in the front wall 32 as described above was because the primary heat treatment member 30 itself was repeatedly heated and cooled to a high temperature.

However, the inventor of the present invention believes that the cause of the cracks occurring in the front wall 32 portion as described above is the transfer pipe ( 110) was found to be slightly thermally expanded and contracted by cooling when heating was stopped.

That is, as the inside of the primary heat treatment member 30 is heated to 1100°C and the inside of the foreign matter removal member 90 is heated to 500°C, the transfer pipe 110 is slightly thermally expanded, and at the end of the heat treatment operation, the When the supply of electricity or fuel to the primary heat treatment member 30 is stopped, the transfer pipe 110 is slightly contracted to its original length.

And, in this process, the coupling portions 92 and 112 repeatedly apply pressure to the front wall 32, and also due to pressure due to the weight of the transfer pipe 110 and the foreign matter removal member 90. As a result, cracks occur in the front wall 32 over a long period of time.

In addition, the inventor of the present invention found that, compared to the thermal expansion of the transfer pipe 110 due to heating as described above, thermal contraction due to interruption of electricity or fuel supply occurs more rapidly.

This is because, when the inside of the primary heat treatment member 30 is heated, the temperature rises relatively slowly by electricity or fuel supply, but when electricity or fuel supply is interrupted, the temperature is increased relatively slowly in preparation for the next operation. It is believed that this is because the inside of the heat-insulating member 30 is artificially cooled.

Therefore, in order to prevent cracking of the front wall 32 that occurs when the coupling portions 92 and 112 are arranged to contact the front wall 32 of the primary heat treatment member 30, the coupling portion (92, 112) is preferably spaced approximately 15 cm to 20 cm from the surface of the front wall 32.

In addition, a buffer member 120 is coupled to the coupling portion 92 and is configured to provide a buffering force against changes in length when the transfer pipe 110 is slightly but rapidly contracted.

The buffer member 120 includes a rotating shaft 122 for supporting the foreign matter removal member 90, a rope 124 coupled to the coupling portion 92, and a weight coupled to an end of the rope 124. Includes (126).

The rope 124 is configured to be supported across the rotation shaft 122, and the rotation shaft 122 is supported to rotate freely by a bearing.

In addition, the weight 126 is formed to weigh approximately 80 kg to 100 kg, and is placed on the ground while coupled to the end of the rope 124, or is arranged to be spaced upward from the ground.

If the weight 126 is placed on the ground, the rope 124 is formed to be long enough to be pulled tautly.

Thus, with the foreign matter removal member 90 supported on the rotation shaft 122, when the transfer pipe 110 expands and contracts, the rotation shaft 122 rotates to support the foreign matter removal member 90. By doing so, it is configured to prevent downward pressure from being applied to the front wall 32 due to the self-weight of the foreign matter removal member 90 and the transfer pipe 110.

In addition, when the weight of the weight 126 is applied to the coupling portion 92 through the rope 124, the transfer pipe 110 is contracted due to cooling of the primary heat treatment member 30. , It is configured to provide cushioning against rapid shrinkage.

Therefore, by providing a buffering force against the phenomenon in which the transfer pipe 110 shrinks more rapidly during cooling than in the case of thermal expansion due to internal heating of the primary heat treatment member 30, as a result, the front wall 32 rapidly contracts. It can prevent force from being applied.

Therefore, even over a long period of time, gas can be prevented from leaking through the portion where the transfer pipe 110 and the front wall 32 come into contact with each other.

Preferably, the rope 124 is coupled to both sides of the weight 126 while being coupled to both sides of the coupling portion 92, respectively.

Thus, the buffering force due to the weight of the weight 126 is configured to be evenly applied to the coupling portion 92.

And, as shown in FIG. 8, the rope 124 may be composed of a wire rope formed by twisting steel materials such as wire, and thus an uneven uneven portion is formed on the surface of the rope 124.

As a result, the amount of tension that the rope 124 can withstand is increased, and the friction between the rope 124 and the rotating shaft 122 is increased to prevent slippage between the rope and the rotating shaft 122. do.

Therefore, when the transfer pipe 110 is expanded or contracted, the force applied from the weight 126 is configured to be completely transmitted to the rotation shaft 122 through the rope 124.

With this configuration, when the foreign matter removal member 90 is displaced due to expansion or contraction of the transfer pipe 110, the rotation shaft 122 is smoothly rotated to exactly match the degree of displacement as described above, thereby removing the foreign matter. The removal member 90 can be supported.

As described above, in order to increase the friction between the rope 124 and the rotating shaft 122, as shown in FIG. 4, the rotating shaft 122 has concave portions 123 along the longitudinal direction of the rotating shaft 122. ) can be formed at predetermined intervals along the entire circumference.

The concave portion 123 may be formed as a concave portion with a rectangular cross-sectional shape, so that the corner portion of the cross-sectional portion of the concave portion 123 formed on the rotation axis 122 is in contact with the rope 124, The friction between the rope 124 and the rotating shaft 122 can be increased.

In addition, in another embodiment of the present invention shown in FIG. 5, a support roller 130 for contacting and supporting the rope 124 is coupled to the rotation shaft 122.

Here, the support roller 130 is firmly coupled to the rotation axis 122 so as not to slip, that is, to prevent relative rotation.

In this state, the rope 124 is supported by the support roller 130, and when the weight 126 moves up and down, the support roller 130 and the rotation shaft 122 are supported by the rope 124. It is configured to rotate.

In another embodiment of the present invention as shown in FIG. 7, the contact surface 132 of the support roller 130 in contact with the rope 124 has a direction perpendicular to the direction of arrangement of the rope 124. Concave portions 134 may be formed.

Thus, like the concave portion 123 formed on the rotating shaft 122, the friction force may be increased through the concave portions 134 formed on the surface of the support roller 130.

In addition, cut portions 34 may be formed around the transfer pipe 110 in the front wall 32 of the primary heat treatment member 30.

Thus, by imparting a little elasticity to the front wall 32 through the incisions 34, unintentional cracks are generated in the front wall 32 due to expansion and contraction of the transfer pipe 110. It can be configured to prevent this.

In addition, heat-resistant fibers 36 are disposed in the portion of the front wall 32 through which the transfer pipe 110 passes and the cut portion 34.

The heat-resistant fiber 36 serves as a sealing material around the transfer pipe 110 and the cut portion 34, preventing gas inside the primary heat treatment member 30 from leaking. It is designed to prevent

In addition, due to the elasticity and buffering power of the heat-resistant fiber 36, the force resulting from expansion and contraction of the transfer pipe 110 is transmitted from the front wall 32 to the portion in contact with the transfer pipe 110. , and is configured to prevent cracks from occurring.

In addition, a contact member 98 made of a fiber material may be disposed in the front portion of the foreign matter removal member 90 through which the stainless steel coil 2 passes.

That is, in front of the foreign matter removal member 90, “L” shaped flange parts 94 and 96 are vertically coupled, and the contact member 98 is disposed between the flange parts 94 and 96, The coil 2 is configured to pass through the contact member 98 and enter the foreign matter removal member 90.

Therefore, while dust, etc. on the surface of the coil 2 is removed through the contact member 98 before entering the foreign matter removal member 90, the transfer pipe 110 is expanded to remove the foreign matter removal member 90. Even if is displaced, pressure is applied to the coil 2 to prevent deformation.

Meanwhile, the primary cooling member 40 is a component for primary cooling the coil 2 heated to a high temperature by the primary heat treatment member 30, and a low-temperature nitrogen and hydrogen mixed gas is supplied to the inside. The coil 2 is rapidly cooled through the cold air of the mixed gas.

However, the exterior of the primary cooling member 40 is made of a metal material such as steel, and since the primary cooling member 40 is also directly connected to the primary heat treatment member 30, the primary heat treatment member 30 A slight thermal expansion phenomenon may occur due to the high temperature atmosphere inside.

However, since low-temperature mixed gas flows in the primary cooling member 40, the above-mentioned thermal expansion phenomenon is almost insignificant, and is greatly expanded due to the pressure and thermal expansion of the mixed gas flowing into the primary cooling member 40. The position changes very slightly over a long period of time.

However, in order to prevent very slight changes in position as described above and to easily adjust the position when changing, a flange in the form of a square plate is integrally formed at the rear end of the primary cooling member 40.

Additionally, a flange in the form of a square plate is formed integrally with the front end portion 52 of the secondary cooling member 50.

In this state, the flange portion 42 at the rear end of the primary cooling member 40 and the flange portion 52 at the front end of the secondary cooling member 50 are firmly coupled by bolts 44 and nuts.

Thus, by resisting a change in position through the entire weight of the first and second cooling members (40, 50), in the case of resisting displacement with the weight of only the primary cooling member (40) or the secondary cooling member (50) In comparison, the degree of displacement can be made very small.

In addition, a position adjustment member 140 is disposed at the rear end of the secondary cooling member 50 to adjust the position of the secondary cooling member 50, so that the first and second cooling members 40 and 50 It is configured so that their positions can be adjusted.

The position adjustment member 140 is coupled to a bolt coupling portion 142 that is arranged standing at the rear of the secondary cooling member 50, and is coupled to the bolt coupling portion 142 to support the rear end of the secondary cooling member. It may include a long bolt 144 for.

Therefore, by rotating the long bolt 144, the positions of the first and second cooling members 40 and 50 can be finely adjusted.

And, the primary cooling member 40 and the secondary cooling member 50 are supported by the first support member 150 and the second support member 160, respectively.

In the first support member 150 and the second support member 160, the support surface in contact with the primary cooling member 40 and the secondary cooling member 50 is configured to be spaced apart from the floor, and the support surface It is configured to allow air to flow to the bottom of the.

Thus, the primary cooling member 40 and the secondary cooling member 50 are configured to be smoothly cooled by the air flowing as described above.

And, as shown in FIG. 12, the primary cooling member 40 and the secondary cooling member 50 are provided on the support surfaces 152 and 162 of the first support member 150 and the second support member 160. ) Concave portions 154 and 164 are formed along the longitudinal direction.

In addition, through openings 156 and 166 in the form of elongated holes may be formed within the concave portions 154 and 164.

Therefore, the corner portions of the cross-sectional portions of the concave portions 154 and 164 exert frictional force on the bottom surfaces of the primary cooling member 40 and the secondary cooling member 50, thereby causing the primary cooling member 40 to and the first and second cooling members (40, 50) are configured to resist displacement in a direction transverse to the longitudinal direction of the secondary cooling member (50).

In addition, by allowing air to flow through the through openings 156 and 166, the cooling efficiency of the primary cooling member 40 and the secondary cooling member 50 is increased to prevent thermal expansion.

Above, the terms used in the embodiments of the present invention have the same meaning as generally understood by those skilled in the art to which the present invention pertains.

Although the present invention has been described with limited examples and drawings, the examples are not intended to limit but illustrate the technical idea of the present invention, so the technical idea of the present invention is not limited to these, and the present invention belongs to A person skilled in the art will be able to make various modifications and variations within the scope of equivalency of the technical spirit of the present invention and the scope of the claims below.

Therefore, the scope of protection of the present invention should be interpreted in accordance with the scope of the patent claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

And, if it is within the scope of the purpose of the present invention, all of the components may be configured by selectively combining one or more of them.

The above-mentioned terms “included” or “consisted of” should be interpreted to mean that the corresponding component may be included, and that other components may be additionally included.

10: Unwinding member
20: Expanding member
30: Primary heat treatment member
40: Primary cooling member
50: Secondary cooling member
60: Secondary heat treatment member
80: Pressure roller member
85: Winding member
90: Foreign matter removal member
110: transfer pipe
120: Buffer member
130: Support roller
140: Position adjustment member

Claims (16)

an unwinding member for unwinding and supplying a stainless steel coil wound in a roll;
an unfolding member for unfolding the stainless steel coil delivered from the unwinding member;
a primary heat treatment member for heating the stainless steel coil delivered from the unfolding member to a first temperature range;
a primary cooling member for primary cooling the stainless steel coil delivered from the primary heat treatment member;
a secondary cooling member for secondary cooling of the stainless steel coil delivered from the primary cooling member;
a secondary heat treatment member for heating the stainless steel coil delivered from the secondary cooling member to a second temperature range;
a pressure roller member for spreading the stainless steel coil delivered from the secondary heat treatment member;
It includes a winding member for winding the stainless steel coil delivered from the pressure roller member,
A foreign matter removal member is installed in front of the primary heat treatment member to burn foreign substances,
The foreign matter removal member is coupled to the front portion of the transfer pipe disposed inside the primary heat treatment member,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that a buffer member is coupled to the coupling portion where the foreign matter removal member is coupled to the transfer pipe and is configured to provide a buffering force to changes in the length of the transfer pipe. According to claim 1,
The coupling portion includes a first flange portion in the form of a square plate formed integrally with the front end of the foreign matter removal member,
It includes a second flange portion in the form of a square plate integrally formed at the rear end of the transfer pipe,
The first flange portion and the second flange portion are coupled by bolts and nuts,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that a separation space is formed between the coupling portion and the front wall of the primary heat treatment member. According to claim 2,
The buffer member includes a rotating shaft for supporting the foreign matter removal member, a rope coupled to the coupling portion, and a weight coupled to an end of the rope, and the rope is supported by the rotating shaft. Continuous heat treatment and cooling equipment for site-based stainless steel coils. According to claim 3,
The rotating shaft is supported by a bearing,
A continuous heat treatment and cooling device for martensitic stainless steel coil, characterized in that the rope is coupled to both sides of the coupling portion. According to claim 4,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, wherein the rope is formed by twisting a plurality of steel wires to form uneven portions on the surface. According to claim 5,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that a support roller for supporting the rope is coupled to the rotation shaft, and the rope is supported by the support roller. According to claim 6,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that concave portions are formed on a contact surface of the support roller in contact with the rope in a direction perpendicular to the rope. According to claim 7,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that cut portions are formed around the transfer pipe in the front wall of the primary heat treatment member. According to claim 8,
A continuous heat treatment and cooling device for martensitic stainless steel coil, characterized in that heat-resistant fibers are disposed on the front wall through which the transfer pipe passes. According to clause 9,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that a contact member made of a fiber material is disposed at a portion of the foreign matter removal member through which the stainless steel coil passes. According to claim 6,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that concave portions along the longitudinal direction are formed on the rotating shaft at predetermined intervals along the entire circumference of the rotating shaft. According to claim 1,
The rear end of the primary cooling member and the front end of the secondary cooling member are joined by bolts and nuts,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that a position adjustment member for adjusting the positions of the primary cooling member and the secondary cooling member is disposed at the rear end of the secondary cooling member. According to claim 12,
The position adjusting member is a martensite characterized in that it includes a bolt coupling portion standing upright at the rear of the secondary cooling member, and a long bolt coupled to the bolt coupling portion to support the rear end of the secondary cooling member. Continuous heat treatment and cooling equipment for stainless steel coils. According to claim 13,
The primary cooling member and the secondary cooling member are supported by a first support member and a second support member, respectively,
A martensitic system, characterized in that the support surface in contact with the primary cooling member and the secondary cooling member in the first support member and the second support member is spaced apart from the floor and configured to allow air to flow to the lower part of the support surface. Continuous heat treatment and cooling equipment for stainless steel coils. According to claim 14,
Continuous heat treatment and cooling device for martensitic stainless steel coil, characterized in that concave portions are formed on the support surfaces of the first and second support members along the longitudinal direction of the primary and secondary cooling members. . According to claim 15,
A continuous heat treatment and cooling device for a martensitic stainless steel coil, characterized in that a through opening is formed in the concave portion.

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