KR100743191B1 - Indraft apparatus for adjourn water in hot leveling - Google Patents

Abstract

An apparatus for inducing sojourn water employed in a hot leveler is provided to the leveled strip from being deformed or defective by preventing the generation of a phenomenon that sojourn water of quenching cooling water from being spread on an upper surface of a leveled strip. An apparatus for inducing sojourn water employed in a hot leveler comprises: a leveler(24) through which a strip(27) rolled in a rolling process passes to quench and level the strip; quenching cooling water lines(33) respectively installed upper and lower parts of one side of the leveled strip to spray cooling water onto the leveled strip; upper and lower nozzles(25,26) respectively installed on the quenching cooling water lines; and a sojourn water induction receiver(28) installed at one sides of the quenching cooling water lines to simultaneously flow in and discharge cooling sojourn water of the leveled strip, and absorb an impact generated during spraying of cooling water, wherein the sojourn water induction receiver is formed in a cylindrical pipe shape as a whole, an inlet opened toward the quenching cooling water lines is formed in the sojourn water induction receiver to flow the sojourn water into the sojourn water induction receiver, and an absorption unit is installed on an inner face of the sojourn water induction receiver opposite to the inlet so as to absorb an impact generated during spraying of cooling water and prevent the cooling water from being scattered.

Description

Residual water induction device employed in hot braces {INDRAFT APPARATUS FOR ADJOURN WATER IN HOT LEVELING}

1 is a perspective view of main parts of a conventional hot straightener and a quenching coolant line facility installed at a front end thereof.

2 is a rolling process line diagram schematically showing the configuration of a rolling process apparatus provided with a retention water induction apparatus employed in a hot straightener according to the present invention;

3 is a perspective view showing in detail a portion A of the main portion of FIG.

4 is a cross-sectional view of the main part configuration in one side of FIG.

<Description of the symbols for the main parts of the drawings>

24. Hot Calibrator

25. Upper nozzle

26. Lower nozzle

27. Calibration blade

28. Guided stay

29. Coolant

30. Drain pipe

31. Iron core member

32. Base

33. Quench Water Line

The present invention relates to a retention water induction device employed in a hot straightener, and more particularly, to a retention water induction device employed in a hot straightener installed in a front portion of a hot straightener in a hot rolled and thick plate line facility to induce retention water. .

1 is a perspective view of main parts of a conventional hot brace and a quench cooling water line installed at the front end thereof.

As shown, the raw material is extracted from the heating furnace installed in the rolling process line, the raw material is transported and rolled by a rolling mill through the conveying roller 3 provided in the rolling process line, and the straightened blade 7 thus rolled is subjected to a hot straightener. Is sent to (4).

In this rolling process, the pressure 50-80 kg / cm² quenching coolant line 13 installed on the front surface of the calibration blade 7 is installed up and down, respectively, and the upper nozzle 5 is installed in the quench cooling water line 13 of the upper part. And, the lower quench cooling water line 13 is provided with a lower nozzle 6 to quench and straighten the rolled calibration blade (7).

However, in the process of quenching the calibration blade 7 as described above, the number of the retained water 9 generated by the upper nozzle 5 is spread over the calibration blade 7 so that a part of the calibration blade 7 is quenched. There is a problem in that shape deformation occurs in the calibration blade 7 to cause a defect.

The present invention was created in order to solve the above problems, and the retention water induction apparatus employed in the hot brace to prevent deformation and defects in the calibration blade by preventing the upper quench coolant retention water from spreading on the upper surface of the calibration blade. The purpose is to provide.

Residual water induction apparatus employed in the hot straightener of the present invention for achieving the above object is a straightener and quenching and straightening while passing through the rolled calibration blade in the rolling process; A quench cooling water line installed at each of the upper and lower sides of the calibration blade to spray cooling water to the calibration blade; An upper nozzle and a lower nozzle respectively installed in the quench cooling water line; It is installed on one side of the quench cooling water line flows in and out the cooling retention water of the calibration blade at the same time while receiving the water retention guide receiving the shock when the cooling water injection; characterized in that it comprises a.

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

FIG. 2 is a fixed line diagram schematically showing the configuration of a rolling process apparatus provided with a retention water induction apparatus employed in a hot straightener according to the present invention, and FIG. 3 is a perspective view showing in detail a portion A which is a main part of FIG. 2. 4 is a cross-sectional view of the main portion of the configuration shown in FIG.

Referring to each of the drawings, the water retention apparatus employed in the hot straightener according to the present invention, the hot straightener for quenching and correcting while passing through the straightening blade 27 rolled in the rolling process schematically shown in FIG. 24) and a quench cooling water line 33 respectively installed on one side upper and lower portions of the calibration blade 27 to inject cooling water 29 into the calibration blade 27, and respectively installed in the quench cooling water line 33. It is installed on one side of the upper nozzle 25, the lower nozzle 26, and the quenching cooling water line 33 to inject and discharge the cooling water or the cooling retention water 29 of the calibration blade 27 at the same time the nozzle 25, 26) is configured to include a retention water guide 28 to absorb the shock during the cooling water injection.

The retention water guide 28 is formed in a cylindrical pipe shape as a whole, and an inlet 28a is opened toward the quench cooling water line 33 so that the cooling retention water 29 flows in.

In addition, the open inlet 28a is formed with a surface facing the upper nozzle 25 open in the longitudinal direction, and the side cross section of the retention guide 28 is the open as shown in FIG. 4. It becomes narrower toward the guide surface of the cooling water 29 of the inlet (28a) is formed in a snail shape.

In addition, an absorbing means for absorbing the shock and preventing scattering during the spraying of the cooling water 29 is provided on the inner surface of the retention water guide receiving body 28 opposite to the inlet 28a. This absorbing means includes the iron core member 31. More specifically, the iron core member 31 is provided in several layers, a space of a predetermined size is formed therebetween. In addition, the iron core member 31 is installed on the side surface (reflection surface) in the residing water guide 28 in multiple layers by the corrosion-resistant iron core, and the iron core member 31 absorbs the shock generated by the coolant splashing. It is made of net form to

In addition, an induction hole 28b is formed in the bottom surface of the retention water induction receiver 28 to discharge the inflow of retention water 29, and the discharge pipe 30 is connected to the induction hole 28b. Induced discharge to coolant box (not shown).

In addition, although not exactly shown in the drawings, the bottom surface of the retention water guide receiver 28 in which the induction hole 28b is formed is formed to be inclined to collect the coolant 29 into the induction hole 28b, and as shown in FIG. 3. Likewise, the left and right sides of the retention guide 28 is provided with a base 32 for closing the side.

Referring to the operation of the retention water induction device employed in the hot brace according to the present invention having the configuration as described above are as follows.

The retention water induction device employed in the hot straightener according to the present invention is for preventing the phenomenon of spreading the quench cooling water 29 injected from the upper nozzle 25 to the upper surface of the calibration blade 27, and hot rolling and thick plates of steel mills. It is a device that is installed in front of the hot braces 24 in the line equipment to guide the retention water (29).

As shown in FIG. 2, the quench cooling water line 33 having a constant spray angle is provided with an upper nozzle 25 and a lower nozzle 26 to quench and correct the rolled calibration blade 27. .

In addition, the base 32 is provided at both sides, and inside the base 32, a retention water guide 28 generated after spraying cooling water is provided, and the upper nozzle 25 inside the retention water guide 28 is provided. The side surface of the inlet 28a facing the side is opened, and is formed in a snail shape so as to have a narrower width from the open side toward the guide surface.

In addition, induction holes 28b are formed at both sides of the narrow width of the retention water guide receiver 28, and the discharge pipe 30 is installed in the induction hole 28b so that the coolant is guided to the lower cooling water box. In order to absorb the shock of the cooling water is injected into the water guide receiving body 28 to absorb the quench staying water 29, and to prevent the cooling water 29 to scatter the space is provided with an iron core member 31 is empty.

In addition, the inlet hole 28b installed at both rear lower ends of the retention water induction receiving body 28 is formed to have a slope so as to smoothly discharge the residence water 29.

More specifically, as shown in FIG. 2, the straightening blade 27 which extracts the raw material from the heating furnace 21 and transports the raw material to the rolling mill 22 through the transfer roller 23 and rolls and rolls the rolled material. In the process of sending the temperature (900 ~ 1,000 ℃) to the hot calibrator 24, the pressure 50 ~ 80kg / cm² quench coolant line 33 is installed up and down in front of the calibration blade (27).

In addition, the quench cooling water line 33 is provided with an upper nozzle 25 and a lower nozzle 26, respectively, so that the straightening blade 27 is transferred to the hot straightener 24 to quench the rolled straightening blade 27. The straightening blade 27 is conveyed through (23).

Then, the operator controls the temperature of the calibration blade 27 by spraying a high-pressure quench coolant 29 to the upper portion of the calibration blade 27 in accordance with the appropriate surface temperature (700 ~ 850 ℃) of the calibration blade 27, The quench cooling retention water 29 injected to the calibration blade 27 is guided by the cooling water through the inlet 28a of the retention water guide 28, which is always open.

In addition, through the iron core member 31 installed inside the retention water guide receiver 28 absorbs the shock generated when the quenching cooling water 29 is injected, the cooling water 29 is provided with the induction hole 28b provided on both sides It leads to the coolant box provided in the lower portion.

As described above, the retention water induction device employed in the hot straightener according to the present invention has the following effects.

It is possible to stably guide the quench coolant retention water generated in a large portion of the upper part of the hot straightening calibrator blade in the hot rolling and thick plate processes of the steel mill to the retention water guide to prevent the shape control and deformation of the calibration blade.

In addition, it is possible to prevent the failure of the peripheral equipment caused by the quench coolant leakage, and to improve the quality and product productivity of the calibration blade.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (12)

A straightener to quench and straighten the straightening blade rolled in the rolling process while passing it; A quench cooling water line installed at each of the upper and lower sides of the calibration blade to spray cooling water to the calibration blade; An upper nozzle and a lower nozzle respectively installed in the quench cooling water line; It is installed on one side of the quench cooling water line flows in and out the cooling retention water of the calibration blade at the same time while receiving the water retention guide receiving the shock when the cooling water injection; includes; The retention water guided receiver is formed in a cylindrical pipe shape as a whole, and has an inlet open toward the quench cooling water line to allow the retention water to flow therein, and the inner surface facing the inlet absorbs and scatters the impact during the spraying of the cooling water. Residual water induction apparatus is employed in the hot braces that are provided with absorbing means for preventing that. delete The method of claim 1, The open inlet is a water retention device employed in the hot braces, characterized in that the surface facing the upper nozzle is formed in the longitudinal direction open. The method of claim 1, The side cross-section of the retention water guide receiver has a narrower width toward the cooling water guide surface of the open inlet, and is formed in a snail shape. delete The method of claim 1, The absorbing means is a retention water induction device employed in a hot straightener, characterized in that it comprises an iron core member. The method of claim 6, The iron core member is provided in several layers, the space is formed therebetween, the retention water induction apparatus employed in the hot braces, characterized in that installed. The method of claim 6, The iron core member is a retention water induction device employed in the hot braces, characterized in that consisting of a net form. The method of claim 1, Residual water induction apparatus employed in the hot braces, characterized in that the induction hole for discharging the retention water is formed on the bottom surface of the retention water guide. The method of claim 9, The induction hole is connected to the discharge pipe is a retention water induction device employed in the hot braces, characterized in that the induction discharge to the lower cooling water box. The method of claim 9, The bottom surface of the guide hole is formed is inclined so that the coolant is collected to the guide hole is a retention water induction device employed in the hot braces, characterized in that formed. The method of claim 1, Residual water induction apparatus employed in the hot braces, characterized in that the base is installed on the left and right sides of the retention water guide receiver to close the side.

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