KR20120033070A - A foot spray apparatus of a continuous casting machine - Google Patents

A foot spray apparatus of a continuous casting machine Download PDF

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Publication number
KR20120033070A
KR20120033070A KR1020100094668A KR20100094668A KR20120033070A KR 20120033070 A KR20120033070 A KR 20120033070A KR 1020100094668 A KR1020100094668 A KR 1020100094668A KR 20100094668 A KR20100094668 A KR 20100094668A KR 20120033070 A KR20120033070 A KR 20120033070A
Authority
KR
South Korea
Prior art keywords
spray
cooling water
continuous casting
casting machine
housing
Prior art date
Application number
KR1020100094668A
Other languages
Korean (ko)
Inventor
구자덕
장영태
Original Assignee
현대제철 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR1020100094668A priority Critical patent/KR20120033070A/en
Publication of KR20120033070A publication Critical patent/KR20120033070A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE: A foot spray apparatus of a continuous casting machine is provided to efficiently cool slab by spraying different amounts of cooling water from two sides of the slab. CONSTITUTION: A foot spray apparatus of a continuous casting machine comprises a main strainer, a sub strainer, and a spray filter(150). The main strainer filters rough foreign materials of cooling water first. The sub strainer filters foreign materials passing through the main strainer secondly. The spray filter finally filters fine foreign materials passing through the sub strainer in front of a spray nozzle nozzle. The spray filter is composed of a first spray filter for cooling both sides of slab in a first direction and a second spray filter for cooling both sides of the slab in a second direction perpendicular to the first direction.

Description

Foot spray apparatus of a continuous casting machine

The present invention relates to a foot spray apparatus for a continuous casting machine, and more particularly, to a foot spray apparatus for a continuous casting machine for injecting cooling water to a cast piece of a foot controller portion provided at a lower portion of a mold of a continuous casting machine.

In general, the continuous casting process, in which a dummy bar is inserted into the lower end of a mold consisting of long and short sides, the molten steel produced in the steelmaking furnace and transferred to the ladle is filled in the tundish and immersed in the tundish. When the molten steel is introduced into the mold through the nozzle, the casting is solidified in the mold and combined with the dummy bar head, and the casting is cooled by cooling fluid cast from the spray cooling nozzle while drawing the dummy bar with the molten steel downward. During casting, casting is continuously performed while an initial solidification layer is formed on the mold surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a foot spraying apparatus for a continuous casting machine, which prevents clogging of a spray nozzle for cooling a cast slab of a portion of a foot controller installed at a lower part of a mold of a continuous casting machine, and efficiently cools the cast steel.

Foot spraying apparatus of the continuous casting machine according to the present invention, the primary strainer to filter out the coarse foreign matter of the cooling water first, the auxiliary strainer to filter the intermediate foreign matter passed through the main strainer, and the second foreign matter passed through the auxiliary strainer And a spray filter finally filtered at the front of the nozzle.

The spray filter is divided into a first spray filter for cooling both sides of the cast steel in a first direction, and a second spray filter for cooling both sides of the cast steel in a second direction perpendicular to the first direction. The amount of cooling water injected in the first direction and the second direction can be made different.

The spray filter includes a tubular housing and a net body inserted into the housing to filter out fine foreign matter in the coolant, wherein the housing has two coolant outlets for discharging the coolant passing through the net in two directions. Is formed.

A support protrusion for supporting the mesh is formed at one inner side of the housing, and a restraining protrusion for restraining movement of the mesh is formed at the other side of the housing.

An inclined portion is formed at an outflow side end of the mesh, and an end of the inclined portion is blocked by an inner surface of the housing so that the coolant discharged through the inclined surface of the inclined portion is divided into two coolant outlets and flows.

An inflow space is formed between the cooling water inlet of the housing and the cooling water inflow side of the mesh so that the cooling water flows evenly over the inflow side.

According to the foot spray apparatus of the continuous casting machine according to the present invention, it is possible to prevent clogging of the spray nozzle for cooling the cast steel of the portion of the foot controller provided in the lower part of the mold of the continuous casting machine, and to cool the water by varying the amount of cooling water in two directions of the cast steel. Since it can be sprayed, the cast steel can be efficiently cooled, and the movement of the net can be prevented, thereby reducing the damage of the net by the pressure of the cooling water.

1 is a schematic view showing a continuous casting machine to which the present invention is applied;
2 is a block diagram showing a foot spray device of a continuous casting machine according to the present invention;
3 is a view showing a state in which the cast steel is cooled by the foot spray device of FIG.
4 is a cross-sectional view illustrating the spray filter of FIG. 2.

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

1 is a schematic diagram showing a continuous casting machine to which the present invention is applied.

As shown, the continuous casting machine used for continuous casting is a tundish 12 to which molten steel is injected from the ladle 10, a mold 14 to solidify the molten steel by receiving molten steel from the tundish 12, In order to completely solidify the cast steel (H) solidified from the mold 14, a plurality of cooling stage 16 for spraying the cooling water to the cast steel, and the pinch roll 18 for carrying out the cooled cast steel.

A foot roller (20) for guiding the slab (H) entering the cooling table (16) is installed in the lower portion of the mold (14), while cooling the slab (H) of the portion of the foot controller (20). Foot spray apparatus 100 is provided.

Figure 2 is a block diagram showing a foot spray device of a continuous casting machine according to the present invention.

As shown in the figure, the foot spray apparatus 100 is the coolant of the cooling water tank 110 is pumped by the pump 120, the coolant pumped by the pump 120 is the primary strainer 130 to filter the coarse foreign matter first After passing through the secondary strainer 140 to filter the intermediate foreign matter passing through the main strainer 13, and then through the spray filter 150 to filter out the micro foreign matter passing through the auxiliary strainer 140 , The spray is directed toward the cast steel (H) through the spray nozzle 160 to cool the cast steel guided by the foot controller 20.

A plurality of valves (not shown) are installed in the cooling water pipe line from the cooling water tank 110 to the spray nozzle 16, and the flow of the cooling water is controlled by a controller for controlling the valves.

The coolant passing through the main strainer 130 forms a foot spray coolant line L1 that passes through the auxiliary strainer 140 and the spray filter 150 to the spray nozzle 160, and the main strainer 130. And a plurality of slab cooling coolant lines L2 and L3 branching between the auxiliary strainer 140 and supplying cooling water to the plurality of cooling zones 16.

3 is a view showing a state in which the cast steel is cooled by the foot spray device of the continuous casting machine according to the present invention.

As shown in the drawing, the spray filter 150 finally filters the fine foreign matter of the coolant from the front side of the spray nozzle 160 for cooling the cast steel H, in a first direction (flange direction in the H-shaped cast steel in the drawing example). A first spray filter 151 for cooling both sides of the cast steel (H) and a second coolant for cooling both sides of the cast steel in a second direction perpendicular to the first direction (the H-shaped cast steel in the drawing example and the web direction). It is divided into two spray filters 152.

Therefore, it is possible to control the valve (not shown) according to the width of the cooling surface of the cast piece H to vary the amount of cooling water injected in the first direction and the second direction.

Cooling water is guided from the first spray filter 151 to the first spray nozzles 161 and 161 'on both sides of the first direction to cool both sides of the flange of the cast steel H, and the second spray filter ( In 152, cooling water is guided to the second spray nozzles 162 and 162 ′ on both sides of the second direction to cool both sides of the web of the slab H.

4 is a cross-sectional view showing the spray filter of the foot spraying apparatus of the continuous casting machine according to the present invention.

As illustrated, the first and second spray filters 151 and 152 are meshes 172 inserted into the housing 171 of the tubular shape and the housing 171 so as to filter out the foreign matter of the coolant. )

Two coolant outlets 171a and 171b are formed at one end (lower side in FIG. 4) of the housing 171 to allow the coolant passing through the mesh 172 to flow in two directions, and the housing ( Cooling water inlet 171c is formed at the other end (upper side in FIG. 4) of 171.

The cooling water outlets 171a and 171b are connected with hoses P1 and P2 communicating with the spray nozzles 161, 161 ', 162 and 162' (see Figs. 3 and 4).

The cooling water inlet 171c communicates with the water jacket cooling water passage C of the mold.

A support protrusion 171d for supporting the mesh 172 is formed to protrude along an inner circumferential surface of the inner side of the housing 171 (lower side in FIG. 4), and the inner side of the housing 171 (upper side in FIG. 4). ) Is formed along the inner circumferential surface of the restraining projection (171e) for restraining the movement of the mesh 172.

The mesh 172 is formed in a cylindrical shape, and an inclined portion 172a is formed at an end portion of the cooling water outlet side of the mesh 172, and the coolant water flowing through the inclined surface of the inclined portion 172a is discharged from the two cooling water outlets. An end of the inclined portion 172a is blocked by an inner surface (bottom surface) of the housing 171 so as to be divided into 171a and 171b.

An inflow space S is formed between the cooling water inlet 171c of the housing 171 and the cooling water inflow side F of the mesh 172 so that the cooling water flows evenly over the entire inflow side.

According to the foot spray device of the continuous casting machine according to the present invention configured as described above, since the spray filter 150 for finally filtering the fine foreign matter of the cooling water is provided in front of the spray nozzle 160 in front of the spray nozzle 160, It is possible to prevent the clogging of the spray nozzle 160, and to spray the cooling water by varying the amount of cooling water in the two directions of the cast steel (H), it is possible to cool the cast steel efficiently, the support projections of the spray filter 150 ( 171d and the restraint protrusion 171e prevent movement of the mesh 172 to reduce damage of the mesh due to the pressure of the cooling water, and the cooling water inlet 171c of the housing 171 and the cooling water inflow of the mesh 172. Cooling water is introduced evenly over the entire inlet side of the mesh 172 by the inflow space (S) formed between the side (F) to increase the efficiency of the filter.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. The scope of the technical protection shall be determined by the technical idea of the appended claims.

14 Mold 20 Putrol
100: foot spray device 110: cooling water tank
120: pump 130: first strainer
140: second strainer 150: spray filter
151: first spray filter 152: second spray filter
160: spray nozzles 161, 161 ': first spray nozzle
162, 162 ': second spray nozzle 171: housing
172: mesh F: coolant inflow side of the mesh
H: Cast S: Inflow space

Claims (6)

The main strainer to filter out coarse foreign matter from the coolant first,
An auxiliary strainer for secondary filtering intermediate foreign matter that has passed through the main strainer;
Foot spray device of the continuous casting machine, characterized in that it comprises a spray filter for finally filtering the fine foreign matter passing through the auxiliary strainer at the front side of the fray nozzle. The method according to claim 1,
The spray filter is divided into a first spray filter for cooling both sides of the cast steel in a first direction, and a second spray filter for cooling both sides of the cast steel in a second direction perpendicular to the first direction. Foot spray device for continuous casting machine. The method according to claim 1,
The spray filter includes a cylindrical housing and a mesh inserted into the housing to filter out fine foreign matter from the cooling water,
The housing has a foot spraying apparatus of the continuous casting machine, characterized in that the two cooling water outlets are formed so that the cooling water passing through the mesh in two directions. The method according to claim 3,
The support sprayer for supporting the mesh is formed on one side of the housing, the foot spraying apparatus of the continuous casting machine, characterized in that the restraining projection for restraining the movement of the mesh is formed on the other side of the housing. The method according to claim 3,
The inclined portion is formed at the end of the cooling water outflow side of the mesh,
And the end portion of the inclined portion is blocked by the inner surface of the housing so that the coolant discharged through the inclined surface of the inclined portion is divided into the two coolant outlets and flows. The method according to claim 3,
Foot spray device of the continuous casting machine is formed between the cooling water inlet of the housing and the cooling water inlet side of the mesh so that the cooling water flows evenly across the inlet side.
KR1020100094668A 2010-09-29 2010-09-29 A foot spray apparatus of a continuous casting machine KR20120033070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100094668A KR20120033070A (en) 2010-09-29 2010-09-29 A foot spray apparatus of a continuous casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100094668A KR20120033070A (en) 2010-09-29 2010-09-29 A foot spray apparatus of a continuous casting machine

Publications (1)

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KR20120033070A true KR20120033070A (en) 2012-04-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106862511A (en) * 2017-03-06 2017-06-20 河钢股份有限公司邯郸分公司 Continuous casting crystallizer foot-roller filters shower nozzle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106862511A (en) * 2017-03-06 2017-06-20 河钢股份有限公司邯郸分公司 Continuous casting crystallizer foot-roller filters shower nozzle
CN106862511B (en) * 2017-03-06 2018-12-04 河钢股份有限公司邯郸分公司 Continuous casting crystallizer foot-roller filters spray head

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