KR101610859B1

KR101610859B1 - Simple type tempcore

Info

Publication number: KR101610859B1
Application number: KR1020150051149A
Authority: KR
Inventors: 박춘수; 배세욱; 정진태; 김대선; 강태구; 김진동
Original assignee: 동국제강주식회사
Priority date: 2015-04-10
Filing date: 2015-04-10
Publication date: 2016-04-08

Abstract

The present invention provides a simple tempcore cooling device which improves cooling efficiency by increasing a cooling time and an amount of cooling water of a reinforcing bar manufactured by being arranged in an unused space of a roller. According to an embodiment of the present invention, the simple tempcore cooling device comprises: a precooling tempcore having a first space unit and a second space unit adjacent to each other, where the precooling tempcore includes a moving member on a lower part; and a transfer guiding unit installed in the second space unit, wherein a hot rolled material passes through the transfer guiding unit. The frame is located in the unused space in a rolling process, and the hot rolled material selectively passes through the transfer guiding unit or the precooling tempcore.

Description

[0002] SIMPLE TYPE TEMPCORE [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple type temp core cooling apparatus, and more particularly, to a simple type temp core cooling apparatus configured to increase the cooling efficiency of a rebar disposed in an idle space of a rolling mill.

Reinforcing bars are used to reinforce structures by means of elongated bars that weave into concrete. Reinforcing steel is a key component of construction materials and is used with concrete to withstand tensile forces.

Generally, reinforcing bars are made of carbon steel or carbon alloy steel, and 300 to 600 MPa grade products are widely used based on the yield strength.

In order to improve the mechanical properties of reinforcing bars, Europe and Asia (excluding Japan) mainly produce products using the Tempcore process.

In the Temp core process, a hot rolled product is passed through a pipe through which high-pressure cooling water flows to heat-treat the product, so that a product having a high strength can be manufactured from a low alloy material. That is, the temp core process is a method of rapidly cooling the surface by spraying high-pressure cooling water onto the surface of the hot rolled material.

Specifically, in the temp core process, the hot rolled material is water-cooled to cause quenching (water quenching), and self-tempering is performed by the internal heat. As a result, the reinforcing bars have a ring-shaped cured layer. That is, the inside of the reinforcing bar has a ferrite + pearlite structure excellent in ductility and a ferrite + martensite structure strong in the outside, so that the intended tensile strength , Yield strength, elongation, bending property, and the like.

1 is an exemplary view showing a conventional rolling process with a main temp core facility.

1, the hot rolled material discharged from the heating furnace 10 is subjected to a rolling process in a stepwise rolling step 21, an intermediate hot rolling step 22 and a hot rolling step 23, And is supplied to the core 2000 to rapidly cool the rolled material.

For example, in order to produce a high-strength product from a low alloy system material by using the main temp core (2000) facility, a cooling zone for rapid cooling of the hot rolled material is formed long, .

However, the main temp core (2000) facility that cools the hot rolled material includes a limited number of cooling pipes and does not easily remodel the main temp core (2000) facility because it requires the treatment of the discharged cooling water There is a problem that can not be done.

In other words, in order to retrofit / extend existing main temp core (2000) facilities, there is a problem that it is necessary to carry out not only the construction of the apparatus but also the construction of the building. Therefore, in order to improve the mechanical properties of a product to be manufactured, expensive alloying elements such as manganese (Mn) and vanadium (V) are further added.

The technology related to the main temp core (2000) facility is disclosed in domestic registration office No. 20-0461557 (prior art document 1), but contents for extending the main temp core facility are not described.

Prior art 1: Domestic registration room 20-0461557 (July 13, 2012)

Technical Solution In order to solve the above problems, a technical object of the present invention is to provide a simple type core cooling device which is provided in an idle space of a rolling mill to increase a cooling time and a cooling rate of a steel bar, will be.

According to an aspect of the present invention, there is provided a display device comprising: a frame having a first space portion and a second space portion adjacent to each other and having a moving member at a lower portion thereof; A pre-cooling temp core installed in the first space and cooling the hot rolled material; And a conveyance guide installed in the second space and passing through the hot rolled material, wherein the frame is located in an idle space of the hot rolling process, and the hot rolled material selectively moves the pre- And a cooling unit for cooling the simple type temp core.

According to an embodiment of the present invention, the conveyance guide includes a slit guiding part for passing through two halves of the hot rolled material; And a strand guide arranged in parallel with the guiding part for the slit, the strand guiding part allowing the hot rolled material to pass through.

In one embodiment of the present invention, the pre-cooling temp core includes: a first temp core seated in front of the frame and injecting cooling water in a moving direction of the hot rolled material; A second temp core seated on the rear of the frame and injecting cooling water in a direction opposite to the moving direction of the hot rolled material; And a cooling pipe connected to a rear portion of the first temp core, wherein the first temp core comprises: a first housing having an outer shape and a first through hole formed at a lower portion thereof, into which a cooling water supply tube is inserted; A male nozzle inserted into a second through hole formed in front of the first housing; And an arm nozzle provided at the rear of the first housing and connected to the cooling pipe. The male nozzle is moved forward and backward, and cooling (cooling) supplied to the hot rolled material through the gap adjustment with the arm nozzle The quantity can be adjusted.

In one embodiment of the present invention, the frame may include: a partition wall partitioning the first space part and the second space part; A first support frame for seating and supporting the preheated temp core; And a second support frame for receiving and supporting the transfer guide portion, wherein the first support frame is provided with a guide portion for supporting both side surfaces of the first and second temp cores, A fixing bar may be inserted to support the upper surfaces of the first and second temp cores.

In one embodiment of the present invention, a first display portion for guiding the center position of the pre-cooling temp core is displayed on the first support frame, and hot rolling material may be supplied to the center portion of the pre-cooling temp core.

In one embodiment of the present invention, the pre-cooled temp core can be used in producing bars having a diameter of 19 mm or more of the hot rolled material.

One embodiment of the present invention is a method of manufacturing a hot rolled steel sheet, comprising the steps of: rolling a hot rolled material through a rough rolling step, an intermediate hot rolling step and a hot rolling step; The hot rolled material to be rolled is fed to a simple type temp core cooling apparatus according to claim 1 located in an idle space of the hot rolling process; And a hot rolled material passing through the simple type temp core cooling device is supplied to the main temp core.

The effects of the simple template core cooling apparatus according to the present invention described above will be described below.

According to the present invention, the simple type temp core cooling apparatus can be pre-cooled for the hot rolled material which is located in the idle space of the hot rolling process and moved to the main temp core. Therefore, the cooling zone for rapid cooling of the hot rolled material becomes longer, and the strength of the produced reinforcing bars can be increased.

This simple type temp core cooling apparatus can be selectively used depending on the diameter of the reinforcing bars manufactured in a movable configuration, not a fixed configuration.

According to the present invention, the pre-cooling type temp core cooling apparatus can selectively use the pre-cooling temp core and the conveyance guide unit in accordance with the required property values of the reinforcing bars manufactured with the pre-cooling temp core and the conveyance guide unit.

For example, in the case where the simple type temp core cooling device is located in the idle space of the rolling process and the required strength of the finally produced reinforcing bar is high, the hot rolled material is supplied to the main temp core after passing through the pre- If the required strength of the rebar to be manufactured is not high, the simple type temp core cooling device can be selectively moved so as to be supplied to the main temp core after passing through the conveyance guide portion.

According to the present invention, the first support frame is provided with a guide portion to support both sides of the first housing provided in the first temp core and the second housing provided in the second temp core.

In addition, a fixing groove is formed in the guide portion, and a fixing bar is inserted into the fixing groove to support and fix the upper surfaces of the first housing and the second housing. Thus, the pre-cooled temp core seated on the first support frame can be stably fixed to the first support frame.

According to the present invention, the first display portion is displayed on the first support frame, and the second display portion on which the movement path of the hot rolled material is displayed can be displayed on the bottom surface of the hot rolling process.

Therefore, by aligning the first display portion with the second display portion through the movement of the simple type temp core cooling device, it is possible to adjust the hot rolled material to pass through the center portion of the preheated temp core. Thus, the produced reinforcing bars can be made into a uniform product.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is an exemplary view showing a conventional rolling process with a main temp core facility.
2 is an exemplary view showing a rolling process according to an embodiment of the present invention.
3 is a schematic perspective view showing a simple type temp core cooling apparatus according to an embodiment of the present invention.
FIG. 4 is a state diagram illustrating a pre-cooled temp core mounted on a first support frame according to an embodiment of the present invention.
5 is a cross-sectional exemplary view of a pre-cooled temp core according to an embodiment of the present invention.
6 is an exemplary view showing a state where the fixing bar according to the embodiment of the present invention is separated from the fixing groove.
7 is a graph showing a cooling curve of a steel material manufactured according to an embodiment of the present invention.
8 is a cross-sectional view of a steel material according to the embodiment and the comparative example of Fig. 7C.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

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

FIG. 2 is an exemplary view showing a rolling process according to an embodiment of the present invention, and FIG. 3 is a schematic perspective view showing a simple type temp core cooling apparatus according to an embodiment of the present invention.

As shown in Figs. 2 and 3, the simple type temp core cooling apparatus 1000 is made to be located in the idle space of the squame thermal rolling process 23. Fig.

This simple type temp core cooling apparatus 1000 is arranged in a movable configuration to cool the hot rolled material in an idle space of the hot rolling process 23 according to the diameter of the steel to be manufactured. That is, the pre-cooling temp core 200 provided in the simple type temp core cooling apparatus 1000 is pre-cooled with respect to the hot rolled material moving to the main temp core 2000.

Bare steel rolling is a work process in which a billet undergoes continuous rolling of a dozen rolling stands in a hot state to produce a desired shape.

In the present specification, "forward" and "rearward" are defined on the basis of the moving path of the hot rolled material. For example, the hot rolling process 21 is located on the front side of the intermediate hot rolling process 22, It is also possible to say that the hot rolling process 23 is located on the rear side of the hot rolling process.

Alternatively, the front and rear sides may be divided depending on the movement path of the hot rolled material on the basis of a specific component. That is, it can be said that the hot rolled material flowing in front of the preheated temp core 200 is discharged to the rear of the preheated temp core 200.

2, the hot rolled material discharged from the heating furnace 10 is subjected to a rolling process in the shape of the final product through the preheat rolling process 21, the intermediate hot rolling process 22 and the hot rolling process 23 .

At this time, depending on the diameter of the steel material to be finally produced, a part of the rolling mill positioned behind the plurality of rolling mills arranged in the hot rolling mill may not be substantially rolled. That is, there is an idle rolling mill that does not use in the rolling process.

For example, if the diameter of the finally produced steel is less than a certain diameter, all of the rolling mills disposed in the rolling process will proceed to the rolling operation. That is, in the rolling mill disposed in the hot rolling mill 23, there is no idle rolling mill which is not used. In other words, the smaller the diameter of the product to be produced, the more the rolling operation must be performed.

Alternatively, when the diameter of the steel to be manufactured is in the form of a predetermined diameter or more, the steel can be rolled to a desired diameter without using any rolling mill provided in the rolling process. In this case, there is an idle rolling mill that does not use in the rolling process.

For example, in the case of the D25 having a diameter of 25 mm and the case of D32 having a diameter of 32 mm, the last rolled rolled material produced in the state where the rolling mill disposed in the hot rolling mill 23 is composed of six stands, Two stands may be idle mills, and in the case of D19 having a diameter of 19 mm in the finally produced hot rolled material, one last placed stand may be an idle mill.

In this way, in a state where the rolling mill disposed in the hot rolling milling process 23 is composed of six stands, the simple type temp core cooling apparatus 1000 has a structure in which the diameter of the hot rolled material finally produced is D19 or more Can be disposed and used in the idle space of the hot rolling process 23 only.

That is, the simple type temp core cooling apparatus 1000 is disposed at the position of the idle mill to increase the cooling zone of the hot rolled material. Therefore, by increasing the cooling time and the cooling water amount of the hot rolled material, the strength of the rebar produced can be increased.

Therefore, it is possible to manufacture reinforcing bars of high strength in a designated facility space without inputting manganese (Mn), vanadium (V), etc., which are expensive alloying elements as in the prior art.

Referring to FIG. 3, the simple type temp core cooling apparatus 1000 may include a frame 100, a pre-cooling temp core 200, and a conveyance guide 300.

The frame 100 is a supporting structure of the simple template core cooling apparatus 1000. The frame 100 has a first space 101 in which the preheated temp core 200 is inserted and a second space 101 in which the transfer guide 300 is inserted. Thereby forming the space portion 102.

A moving member 103 is provided under the frame 100 so that the frame 100 can be moved. At this time, the shifting member 103 may be a wheel.

Such a frame 100 may include a partition wall portion 110, a first support frame 120, and a second support frame 130. The first and second space portions 101 and 102 are configured to partition the first space portion 101 and the second space portion 102. The first space portion 101 and the second space portion 102 define the partition wall portion 110 As shown in FIG.

The first support frame 120 is configured to seat and support the pre-cooled temp core 200 inserted in the first space portion 101. That is, the first support frame 120 is in the form of a frame supporting the preheated temp core 200.

The pre-cooling temp core 200 is supplied with cooling water to cool the hot rolled material passing through the pre-cooling temp core 200 rapidly. The concrete contents of the pre-cooling temp core 200 will be described later.

The second support frame 130 is configured to seat and support the conveyance guide 300 inserted in the second space 102. That is, the second support frame 130 is in the form of a frame for supporting the transfer guide 300.

The conveyance guide 300 may include a guide 310 for a slit and a guide 320 for a strand. The slit guiding part 310 and the strand guiding part 320 are arranged in parallel.

The guide portion 310 for slits may be formed by, for example, each hot-rolled material halved for a product to be hot rolled so as to be half-divided into two circular shapes from the billet, after passing through the slit guide portion 310, (2000).

The strand guide portion 320 is configured to supply the main steel core 2000 with a bar steel product, which is different from the slit guide portion 310, in one form.

A roller (not shown) may further be provided in the slit guiding part 310 and the strand guiding part 320, and the rolled hot rolled material may be smoothly supplied to the main temp core 2000 by the rollers .

The slit guiding portion 310 and the strand guiding portion 320 are used when the rolled hot rolled material does not need to pass through the preheated thermal core 200. That is, when the strength of the reinforcing bars can be ensured without requiring the strength of the reinforcing bar to be manufactured through the pre-cooling temp core 200, the hot rolling material may be used as the strand guide portion 320 or the slit guiding portion 310, And then supplied to the main temp core 2000.

In other words, when the guiding portion 310 for a slit and the guiding portion for a strand 320 do not need to pass through the pre-heating temp core 200, the deflection of the hot rolled material moving from the rolling device to the main temp core 2000 It is possible to prevent the pre-cooling temp core 200 from being unnecessarily used.

The hot rolled material is selectively passed through the strand guide portion 320, the guide portion 310 for the slit 310, and the pre-heated core core 200 according to the required strength and shape of the finally produced rebar .

That is, the simple type temp core cooling apparatus 1000 located in the idle space of the hot rolling process 23 is selectively moved by the moving member 103 so that the hot rolling material subjected to the hot rolling process is transferred to the transfer guide 300 ) Or the pre-cooling temp core (200).

FIG. 5 is a cross-sectional view of a pre-cooled template core according to an embodiment of the present invention, and FIG. 6 is a cross- FIG. 6 is an exemplary view showing a state where the fixing bar according to the embodiment of the present invention is separated from the fixing groove; FIG.

4 to 6, the pre-cooling temp core 200 may include a first temp core 210, a second temp core 220, and a cooling pipe 230.

The first temp core 210 is supported in the front of the first support frame 120 and is supplied with cooling water to rapidly cool the hot rolled material guided to the first template core 210. At this time, the first temp core 210 is configured to cool the hot rolled material by injecting cooling water in a direction in which the hot rolled material is moved.

The second temp core 220 is supported on the rear side of the first support frame 120 and is supplied with cooling water to rapidly cool the hot rolled material guided to the second temp core 220. At this time, the second temp core 220 blows cooling water in a direction opposite to the direction in which the hot rolled material is moved to rapidly quench the hot rolled material and peel off the cooling water on the surface of the hot rolled material.

Here, a cooling pipe 230 is connected to the rear portion of the first temp core 210 to cool the hot rolled steel material and prevent the cooling water from being scattered.

Referring to FIG. 5, the first template core 210 may include a first housing 211, a male nozzle 212, and a female nozzle 213.

The first housing 211 forms an outer shape of the first template core 210 and a first through hole 215 through which a cooling water supply pipe 214 is inserted is formed in the lower portion.

The first housing 211 has a cooling water accommodating space 216 formed therein and the cooling water introduced from the cooling water supply pipe 214 is filled in the cooling water accommodating space 216. The male and female nozzles 212, So that the hot rolled material passing through the first temp core 210 is cooled.

A second through hole 217 is formed in front of the first housing 211 and a male nozzle 212 is inserted in the second through hole 217. This male nozzle 212 is a structure for controlling the amount of cooling water discharged from the hot rolled material. That is, the male nozzle 212 is selectively moved forward and backward, and the cooling water discharged through the gap adjustment between the male nozzle 212 and the female nozzle 213 can be adjusted.

For example, when the male nozzle 212 is inserted into the second through hole 217 of the first housing 211, a thread is formed in the second through hole 217, and the outer surface of the male nozzle 212 And the male nozzle 212 and the second through hole 217 may be screwed to each other. Accordingly, the male nozzle 212 may be selectively moved forward or backward with respect to the first housing 211 as the male nozzle 212 rotates. At this time, a gap between the male nozzle 212 and the female nozzle 213 can be selectively adjusted by inserting or adjusting a liner plate between the male nozzle 212 and the first housing 211.

The arm nozzle 213 is installed at the rear of the first housing 211 and connected to the cooling pipe 230. Such an arm nozzle 213 is fixed to the first housing 211 and can stably support the cooling pipe 230 to the first housing 211 and also can adjust the gap with the male nozzle 212 To control the cooling water quantity.

As such, it is needless to say that the configuration of the first temp core for quenching the hot rolled material is not limited to this, but may be variously formed.

Referring to FIG. 6, the first support frame 120 is provided with a guide part 121, and the pre-heating temp core 200 can be stably supported on the first support frame 120. That is, the guide portion 121 protrudes inward of the first support frame 120 to support both sides of the first and second temp core 210 and 220.

Therefore, the guide portion 121 can be prevented from being shaken while being moved left and right in a state where the first and second temp core 210 and 220 are seated on the first support frame 120.

The guide part 121 stably fixes the first and second temp cores 210 and 220 to the first support frame 120 without staggering, The positions of the first temp core 210 and the second temp core 220 can be accurately specified.

The simple template core cooling apparatus 1000 is provided so that the hot rolled material is supplied to the central portions of the first and second temp cores 210 and 220 disposed at the designated positions of the simple template core cooling apparatus 1000 Can be moved. As such, the rolled hot rolled material is guided to the center of the preheated temp core 200, so that the same water pressure and yield can be transmitted to the outer surface of the rolled material. Therefore, it is possible to produce reinforcing bars of a uniform product.

A fixing groove 122 is formed in the guide 121 and a fixing bar 123 is detachably attached to the fixing groove 122. That is, the fixing bar 123 is inserted into the fixing groove 122 to stably support the upper surface of the first temp core 210 and the upper surface of the second temp core 220.

Therefore, the pre-cooling temp core 200 can be stably supported and fixed to the first support frame 120 by the guide part 121 and the fixing bar 123. [

The first support frame 120 may further include a first display unit 124 (see FIG. 3) for guiding the center position of the preheated temp core 200. The first display portion 124 is displayed on the lower side of the first support frame 120 on which the pre-heating temp core 200 is seated.

That is, the operator confirms the position of the first display unit 124 and selectively moves the simple type temp core cooling apparatus 1000 to adjust the hot rolled material discharged from the rolling machine to be guided to the center position of the pre-cooled temp core 200 do.

At this time, a second display portion (not shown) is displayed on the bottom surface of the hot rolling process 23 to indicate a predicted path where the hot rolling material is to be moved, and the operator moves the first display portion 124 and the second display portion Type temp core cooling apparatus 1000 is moved. Here, the display unit may be further displayed below the second support frame 130 on which the transfer guide unit 300 is mounted.

7 is a graph showing a cooling curve of a steel material manufactured according to an embodiment of the present invention.

As shown in FIGS. 7 and 8, the steel material according to the embodiment is subjected to the rolling process, and then the pre-heated core core 200 (see FIG. 7) of the simple type template core cooling apparatus 1000 located in the idle space of the hot- ), And then subjected to a secondary cooling in the main temp core 2000.

The steel material according to the comparative example is a steel material which has been subjected to a primary cooling after being subjected to a rolling process and then directly supplied to the main temp core 2000.

7 (a) is a steel material having a diameter of 19 mm in the finally produced steel bar, Fig. 7 (b) is a steel material having a diameter of 25 mm in the finally produced steel bar, and Fig. 7 (c) Is a steel material having a diameter of 32 mm.

The steel material of the embodiment according to Fig. 7 (a) is provided with two simple type temp core cooling apparatuses 1000 in the idle space of the hot rolling process 23, and the hot rolling material subjected to the rolling process has two simple types It can be seen that the cooling process has been performed twice by the temp core cooling apparatus 1000.

The steel material of the embodiment according to FIGS. 7 (b) and 7 (c) is provided with four simple type temp core cooling apparatuses 1000 in the idle space of the hot rolling process 23, .

That is, the larger the diameter of the rebar produced, the greater the idle space in the hot rolling process 23, and in the idle space of the hot rolling process 23, the simple thermal core cooling apparatus 1000 can be further arranged Of course it is.

As shown in FIG. 7, it can be seen that the steel surface passed through the pre-heating temp core 200 of the embodiment has a lower steel surface temperature than the steel of the comparative example.

8 (a) is a cross-sectional view of a steel material according to a comparative example, and Fig. 8 (b) is a cross-sectional view of a steel material according to an embodiment of the present invention. Sectional view of a steel material.

That is, the steel material of the embodiment passed through the pre-cooling temp core 200 has a surface hardened layer (pore martensite structure) formed wider than the steel material of the comparative example manufactured without the simple type temp core cooling apparatus 1000 .

As a result, the yield strength of the steel according to the comparative example was 480 MPa, and the yield strength of the steel according to the example was 630 MPa Respectively. That is, it can be seen that the yield strength of the steel according to the embodiment is 150 MPa higher than that of the steel according to the comparative example.

In other words, in the case of a steel material having a diameter of a certain diameter or more, the simple type temp core cooling apparatus 1000 is disposed in the idle space of the hot rolling process 23, so that the mechanical properties, such as yield strength, . That is, by forming the cooling zone for rapidly cooling the hot rolled material through the further arrangement of the simple type temp core cooling apparatus 1000, the strength of the produced reinforcing bars can be increased by increasing the cooling time and cooling water.

The manufacturing method of the reinforcing bar may vary depending on the diameter of the finally produced reinforcing bar.

For example, in the case where the diameter of the finally produced reinforcing bar is equal to or larger than a certain size, the simple type temp core cooling apparatus 1000 is disposed in the idle space of the hot rolling step 23, and the hot rolled material, (1000). &Lt; / RTI >

At this time, when the hot rolled material passes through the simple type temp core cooling apparatus 1000, when the required strength of the finally produced reinforcing steel is to be increased, the pre-cooled temp core 200 is used to pass the required strength If the strength of the reinforcing bar can be ensured without passing through the pre-cooling temp core 200, it is adjusted to pass through the strand guide portion 320 or the guide portion 310 for the slit.

On the other hand, if the diameter of the finally produced rebar is less than a certain size, only the rolling mill is disposed in the hot rolling mill 23 to perform the rolling operation of the hot rolling mill. Here, the diameter of the reinforcing bar, which is a standard for manufacturing the reinforcing bars, may be 19 mm.

Next, the hot rolled material, which has been rolled through the simple type temp core cooling apparatus 1000 or not through the simple type temp core cooling apparatus 1000, is supplied to the main temp core 2000 and quench-treated.

When the diameter of the finally produced rebar is greater than or equal to a certain size, the hot rolled material subjected to the rolling is passed through the pre-cooled temp core 200 provided in the simple type temp core cooling apparatus 1000, Can be effectively increased.

It should be understood, however, that the scope of the present invention is not limited by the scope of the present invention.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: frame 120: first support frame
121: guide part 130: second support frame
200: preheating temp core 210: first temp core
220: second temp core 300: conveying guide
310: guide part for slit 320: guide part for strand
1000: Simple Type Temp Core Cooling System 2000: Main Temp Core

Claims

A frame which forms a first space part and a second space part which are adjacent to each other and has a moving member at a lower part thereof;
A pre-cooling temp core installed in the first space and cooling the hot rolled material; And
And a conveyance guide installed in the second space and passing through the hot rolled material,
Wherein the frame is located in an idle space of a masonry hot rolling process, the hot rolling material is configured to selectively pass the preheated temp core or the conveyance guide,
The hot rolled material guided to the main temp core via the conveyance guide portion is prevented from being sagged by the conveyance guide portion and the hot rolled material guided to the pre-
Wherein the conveying guide has a guiding portion for a slit through which the two halves of the hot rolled material pass, and a strand guiding portion arranged in parallel with the guiding portion for slitting,
The preheated temp core includes: a first temp core that is seated in the front of the frame and ejects cooling water in a moving direction of the rolled material; a cooling unit that is seated and supported at the rear of the frame, And a cooling pipe connected to a rear portion of the first temp core, wherein the first temp core has a first housing having an outer shape and a first through hole formed at a lower portion thereof to receive a cooling water supply tube, A male nozzle inserted into a second through hole formed in front of the first housing and an arm nozzle provided at the rear of the first housing and connected to the cooling pipe, the male nozzle being moved forward and rearward, The amount of cooling water supplied to the hot rolled material is controlled by controlling the gap of the hot rolled material,
Wherein the frame has a partition part for partitioning the first space part and the second space part, a first support frame for holding and supporting the pre-cooling temp core, and a second support frame for supporting and supporting the conveyance guide part, The frame is provided with a guide portion for supporting both side surfaces of the first and second temp cores, and a fixing bar is inserted into the fixing groove formed in the guide portion to support the upper surfaces of the first and second temp cores under,
Wherein a first display portion for guiding a center position of the preheated temp core is displayed on the first support frame so that a hot rolled material is supplied to a center portion of the preheated temp core, A simple type temp core cooling apparatus characterized by being used in producing a bar steel.

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