CN108746577B - Device and method for preventing casting and spraying of steel - Google Patents
Device and method for preventing casting and spraying of steel Download PDFInfo
- Publication number
- CN108746577B CN108746577B CN201810539554.7A CN201810539554A CN108746577B CN 108746577 B CN108746577 B CN 108746577B CN 201810539554 A CN201810539554 A CN 201810539554A CN 108746577 B CN108746577 B CN 108746577B
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- China
- Prior art keywords
- ladle
- nozzle
- sliding plate
- ladle nozzle
- fixing device
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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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/38—Means for operating the sliding gate
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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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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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
- 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)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a device for preventing the start of casting and spraying steel, comprising: the ladle nozzle comprises a ladle nozzle machine part (2), a ladle nozzle, a first ladle nozzle sliding plate (3), a second ladle nozzle sliding plate (6), a sliding operating rod (7), a ladle nozzle fixing device (12), a hydraulic shaft (11), a hydraulic cylinder (9), a hydraulic cylinder fixing device (8) and a ladle long nozzle (5); the bale nozzle machine part (2) is arranged at the bottom of the ladle (1), and the bale nozzle fixing device (12) is sleeved outside the bale nozzle machine part (2); the partial ladle water gap positioned in the ladle water gap machine part (2) is provided with an opening, and the ladle long water gap (5) is hung at the lower part of the ladle water gap (4); the first ladle nozzle sliding plate (3) is fixed on one side of the opening, and the second ladle nozzle sliding plate (6) is fixedly connected with one end of a sliding operating rod (7); the other end of the hydraulic shaft is sleeved with a hydraulic shaft (11), and a hydraulic cylinder (9) is fixed at the bottom of the ladle (1) through a hydraulic cylinder fixing device (8).
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a device and a method for preventing casting and spraying steel.
Background
In the traditional continuous casting production process of a steel plant, the ladle casting operation is one of the important links of the continuous casting production process. At present, when a ladle is cast, a steel drawing operator of a continuous casting machine commands the steel drawing operator to complete casting operation by virtue of the operation experience of workers, and often, because the stroke of a hydraulic cylinder is not controlled in place by the operator, the water gap of the ladle is too small or too large, so that accidents such as small casting flow, low liquid level, molten steel splashing and the like are caused, and not only is the long water gap of the ladle required to be frequently replaced, so that the consumption of refractory materials is caused; in addition, in the process of replacing the ladle long nozzle, the ladle nozzle is required to be normally opened for pouring, molten steel is oxidized, the quality of the molten steel and a casting blank is influenced, the production efficiency is influenced, and potential safety hazards are buried for safety production.
Disclosure of Invention
The invention aims to overcome the defects of the conventional method for preventing the cast-on steel spraying, and provides a device for preventing the cast-on steel spraying, which prevents the cast-on steel spraying by adopting a mode of controlling the stroke of a hydraulic cylinder;
in order to achieve the above object, the present invention provides an apparatus for preventing the start of steel spraying, comprising: the ladle nozzle comprises a ladle nozzle machine part, a ladle nozzle, a first ladle nozzle sliding plate, a second ladle nozzle sliding plate, a sliding operating rod, a ladle nozzle fixing device, a hydraulic shaft, a hydraulic cylinder fixing device and a ladle long nozzle; the ladle nozzle part is arranged at the bottom of the ladle, the ladle nozzle fixing device is sleeved outside the ladle nozzle part and fixed at the bottom of the ladle, and the ladle nozzle fixing device fixes the ladle nozzle part at the bottom of the ladle; the ladle nozzle is vertically inserted into the ladle nozzle fixing device and the ladle nozzle machine member and is fixed at the bottom of the ladle; the ladle nozzle part positioned in the ladle nozzle part is provided with an opening, the opening divides the ladle nozzle into a ladle upper nozzle and a ladle lower nozzle, and the ladle long nozzle is hung at the lower part of the ladle lower nozzle to form an open casting flow channel; the first ladle nozzle sliding plate is fixed on one side of the opening, and the second ladle nozzle sliding plate is fixedly connected with one end of the sliding operating rod and is positioned on the other side of the opening; the other end of the sliding operating rod is sleeved with a hydraulic shaft, and the hydraulic shaft is fixed on the hydraulic cylinder and fixed at the bottom of the steel ladle through a hydraulic cylinder fixing device.
In the technical scheme, the first ladle nozzle sliding plate, the second ladle nozzle sliding plate, the sliding operating rod and the hydraulic shaft are positioned on the same horizontal line and are mutually connected; the hydraulic shaft is controlled to move by controlling the extending stroke of the hydraulic cylinder, and the sliding operating rod and the second ladle nozzle sliding plate are driven to move, so that a ladle nozzle is opened or closed, and casting flow is started or stopped.
In the technical scheme, a hydraulic cylinder is connected with a YJS-B ladle nozzle hydraulic system through a hydraulic shaft, the hydraulic system is connected with a button controller on the hand of an operator through a cable, and the operator controls the opening and closing of a valve table of the hydraulic system through operating the button controller, so that the hydraulic cylinder is stretched and retracted, and the hydraulic shaft is moved; and then drive the removal of slide bar and second bale mouth of a river slide, realize opening or closing the bale mouth of a river. Wherein, the YJS-B ladle nozzle hydraulic system mentioned here is a common device or a known device in the field.
Based on the device for preventing the cast-on steel spraying, the invention also provides a method for preventing the cast-on steel spraying, which comprises the following steps:
step 1) before casting operation, controlling the hydraulic shaft to move in a direction close to a first ladle nozzle sliding plate to drive a sliding operating rod and a second ladle nozzle sliding plate to move to the first ladle nozzle sliding plate, and sealing a ladle upper nozzle through the first ladle nozzle sliding plate and the second ladle nozzle sliding plate;
step 2) starting pouring operation, presetting a certain value for the extending stroke of the hydraulic cylinder, controlling the hydraulic shaft to move in the direction away from the first bale water gap sliding plate, further driving the sliding operating rod and the second bale water gap sliding plate to move away from the first bale water gap sliding plate, and opening a bale water feeding gap;
step 3) hanging the ladle long nozzle below the ladle lower nozzle by a second operator to form an open-casting runner for casting;
and 4) when the extending stroke of the hydraulic cylinder reaches the fixed value, namely the extending stroke of the hydraulic cylinder is aligned with the outer edge of the ladle nozzle fixing device, namely the hydraulic shaft is attached to the outer edge of the ladle nozzle fixing device, and the first operator stops opening the flow. Adjusting the extending stroke of the hydraulic cylinder in a point-acting adjusting mode according to the tundish weighing and the actual liquid level of the molten steel; the weighing data of the molten steel in the tundish is controlled to be 35-40 tons, the actual molten steel level in the tundish is lower than the height of the overflow port, and the molten steel in the tundish is prevented from running after the liquid level in the tundish is higher than the height of the overflow port.
In the above technical solution, in the step 1) and the step 2), the stroke of the hydraulic shaft is controlled by using a point-acting control method.
In the above technical scheme, in the step 2), the preset fixed value is preferably in the range of 25-28mm, the width of the paint mark is 3mm along the outer edge of the ladle nozzle fixing device, and the hydraulic cylinder is controlled to be in the range in a telescopic mode.
The invention has the advantages that:
the invention can effectively prevent the safety accident of casting and steel spraying, improve the self-opening rate of the ladle nozzle, reduce the consumption of refractory materials, reduce the cost and improve the quality of casting blanks.
Drawings
FIG. 1 is a schematic view of a device for preventing the start-up of steel injection according to the present invention in the configuration of a closed ladle nozzle;
fig. 2 is a schematic structural view of a device for preventing the steel from being poured and sprayed of the present invention in a state that a ladle nozzle is opened.
Reference numerals:
1. ladle 2, big ladle nozzle machine parts
3. First bale nozzle slide plate 4 and bale discharge nozzle
5. Ladle long nozzle 6 and second ladle nozzle sliding plate
7. Slide operation rod 8 and hydraulic cylinder fixing device
9. Hydraulic cylinder 10, ladle upper nozzle
11. Hydraulic shaft 12 and ladle nozzle fixing device
13. Opening of the container
Detailed Description
As shown in fig. 1 and 2, the present invention provides an apparatus for preventing steel from being sprayed by casting, which includes: the ladle nozzle comprises a ladle nozzle machine part 2, a ladle nozzle, a first ladle nozzle sliding plate 3, a second ladle nozzle sliding plate 6, a sliding operating rod 7, a ladle nozzle fixing device 12, a hydraulic shaft 11, a hydraulic cylinder 9, a hydraulic cylinder fixing device 8 and a ladle long nozzle 5; the ladle nozzle part 2 is arranged at the bottom of the ladle 1, the ladle nozzle fixing device 12 is sleeved outside the ladle nozzle part 2 and fixed at the bottom of the ladle 1, and the ladle nozzle fixing device 12 fixes the ladle nozzle part 2 at the bottom of the ladle 1; the ladle nozzle is vertically inserted into the ladle nozzle fixing device 12 and the ladle nozzle machine member 2 and is fixed at the bottom of the ladle 1; the partial ladle water gap positioned in the ladle water gap machine part 2 is provided with an opening 13, the opening 13 divides the ladle water gap into a ladle upper water gap 10 and a ladle lower water gap 4, and a ladle long water gap 5 is hung at the lower part of the ladle lower water gap 4 to form an open casting flow channel; the first ladle nozzle sliding plate 3 is fixed at the left side of the opening, the second ladle nozzle sliding plate 6 is fixedly connected with the left end of the sliding operating rod 7, and the first ladle nozzle sliding plate and the second ladle nozzle sliding plate are positioned at the right side of the opening 13; the right end of the sliding operating rod 7 is sleeved with a hydraulic shaft 11, and the hydraulic shaft 11 is fixed on a hydraulic cylinder 9 and is fixed at the bottom of the ladle 1 through a hydraulic cylinder fixing device 8.
In the technical scheme, the first ladle nozzle sliding plate 3, the second ladle nozzle sliding plate 6, the sliding operating rod 7 and the hydraulic shaft 11 are positioned on the same horizontal line and are mutually connected; the hydraulic shaft 11 is controlled to move by controlling the extending stroke of the hydraulic cylinder, so that the sliding operating rod 7 and the second ladle nozzle sliding plate 6 are driven to move, the ladle nozzle is opened or closed, and casting flow is started or stopped.
In the technical scheme, a hydraulic cylinder is connected with a YJS-B ladle nozzle hydraulic system through a hydraulic shaft, the hydraulic system is connected with a button controller on the hand of an operator through a cable, and the operator controls the opening and closing of a valve table of the hydraulic system through operating the button controller, so that the hydraulic cylinder is stretched and retracted, and the hydraulic shaft is moved; and then drive the removal of slide bar and second bale mouth of a river slide, realize opening or closing the bale mouth of a river. The YJS-B ladle nozzle hydraulic system mentioned here is the common knowledge that can be foreseen by the technicians in this field.
Based on the device for preventing the cast-on steel spraying, the invention also provides a method for preventing the cast-on steel spraying, which comprises the following steps:
step 1) before casting operation, a first operator operates a button controller to control the extending stroke of a hydraulic cylinder, namely, a hydraulic shaft 11 is controlled to move towards a direction close to a first ladle nozzle sliding plate 3 to drive a sliding operating rod 7 and a second ladle nozzle sliding plate 6 to move to the first ladle nozzle sliding plate 3, and a ladle upper nozzle is sealed through the first ladle nozzle sliding plate 3 and the second ladle nozzle sliding plate 6;
step 2) starting pouring operation, presetting a certain value for the extending stroke of the hydraulic cylinder, continuously operating the button controller by a first operator, controlling the hydraulic shaft 11 to move towards the direction far away from the first bale water gap sliding plate 3, further driving the sliding operating rod 7 and the second bale water gap sliding plate 6 to be far away from the first bale water gap sliding plate 3, and opening a bale water feeding gap;
step 3) hanging a ladle long nozzle 5 below a ladle lower nozzle 4 by a second operator to form a casting runner for casting;
and 4) stopping the flow opening by the first operator when the extending stroke of the hydraulic cylinder reaches the fixed value, namely the extending stroke of the hydraulic cylinder is aligned with the outer edge of the ladle nozzle fixing device 12, namely the hydraulic shaft 11 is attached to the outer edge of the ladle nozzle fixing device 12. A first operator adjusts the extending stroke of the hydraulic cylinder in a inching type adjusting mode according to the tundish weighing and the actual liquid level of molten steel; the weighing data of the molten steel in the tundish is controlled to be 35-40 tons, the actual molten steel level in the tundish is lower than the height of the overflow port, and the molten steel in the tundish is prevented from running after the liquid level in the tundish is higher than the height of the overflow port.
In the above technical solution, in the step 1) and the step 2), the first operator controls the stroke of the hydraulic shaft by using a point-action type control method.
In the above technical solution, in the step 2), the preset constant value is preferably 25 mm; paint marks are used along the outer edge of the ladle nozzle fixing device 12 to mark the width of 3mm, and the hydraulic cylinder 9 is controlled to stretch and contract within the range.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. A device for preventing steel from being poured and sprayed, characterized in that it comprises: the ladle nozzle comprises a ladle nozzle machine part (2), a ladle nozzle, a first ladle nozzle sliding plate (3), a second ladle nozzle sliding plate (6), a sliding operating rod (7), a ladle nozzle fixing device (12), a hydraulic shaft (11), a hydraulic cylinder (9), a hydraulic cylinder fixing device (8) and a ladle long nozzle (5);
the first ladle nozzle sliding plate (3), the second ladle nozzle sliding plate (6), the sliding operating rod (7) and the hydraulic shaft (11) are positioned on the same horizontal line and mutually connected;
the ladle nozzle part (2) is arranged at the bottom of the ladle (1), the ladle nozzle fixing device (12) is sleeved outside the ladle nozzle part (2), and the ladle nozzle is vertically inserted into the ladle nozzle fixing device (12) and the ladle nozzle part (2) and fixed at the bottom of the ladle (1); the ladle nozzle part positioned in the ladle nozzle part (2) is provided with an opening (13), the opening divides the ladle nozzle into a ladle upper nozzle (10) and a ladle lower nozzle (4), and the ladle long nozzle (5) is hung at the lower part of the ladle lower nozzle (4) to form an open casting flow channel; the first ladle nozzle sliding plate (3) is fixed on one side of the opening (13), and the second ladle nozzle sliding plate (6) is fixedly connected with one end of the sliding operating rod (7) and is positioned on the other side of the opening (13); the other end of the sliding operating rod (7) is sleeved with a hydraulic shaft (11), and the hydraulic shaft (11) is fixed on a hydraulic cylinder (9) and is fixed at the bottom of the ladle (1) through a hydraulic cylinder fixing device (8).
2. A method for preventing the start-up spray of steel based on the apparatus for preventing the start-up spray of steel of claim 1, the method comprising:
step 1) before casting operation, controlling a hydraulic shaft (11) to move towards a direction close to a first ladle nozzle sliding plate (3) to drive a sliding operating rod (7) and a second ladle nozzle sliding plate (6) to move to the first ladle nozzle sliding plate (3), and sealing a ladle upper nozzle through the first ladle nozzle sliding plate (3) and the second ladle nozzle sliding plate (6);
step 2), starting pouring operation, controlling the hydraulic shaft (11) to move towards the direction far away from the first ladle nozzle sliding plate (3), further driving the sliding operating rod (7) and the second ladle nozzle sliding plate (6) to be far away from the first ladle nozzle sliding plate (3), and opening a ladle upper nozzle;
step 3), hanging the ladle long nozzle (5) below the ladle lower nozzle (4) to form an open-casting runner for casting;
and 4) when the extending stroke of the hydraulic cylinder reaches a preset fixed value, the hydraulic shaft (11) is attached to the outer edge of the ladle nozzle fixing device (12) together, and the opening is stopped.
3. The method according to claim 2, wherein in the step 1) and the step 2), the stroke of the hydraulic shaft is controlled by a point-acting control method.
4. The method as claimed in claim 2, wherein the predetermined constant value in step 4) is in the range of 25-28 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810539554.7A CN108746577B (en) | 2018-05-30 | 2018-05-30 | Device and method for preventing casting and spraying of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810539554.7A CN108746577B (en) | 2018-05-30 | 2018-05-30 | Device and method for preventing casting and spraying of steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108746577A CN108746577A (en) | 2018-11-06 |
| CN108746577B true CN108746577B (en) | 2020-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810539554.7A Active CN108746577B (en) | 2018-05-30 | 2018-05-30 | Device and method for preventing casting and spraying of steel |
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| CN (1) | CN108746577B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS472916U (en) * | 1971-01-27 | 1972-09-01 | ||
| JP2002336957A (en) * | 2001-05-11 | 2002-11-26 | Nippon Steel Corp | Sliding nozzle of metallurgic vessel, and deposit removing method |
| CN105081255B (en) * | 2015-09-28 | 2017-06-27 | 武汉钢铁(集团)公司 | The method that conticaster full-automatic is poured |
| KR101795468B1 (en) * | 2016-03-10 | 2017-11-10 | 주식회사 포스코 | Gate Apparatus |
| CN107962179A (en) * | 2016-10-19 | 2018-04-27 | 景蓓蓓 | A kind of slide gate mechanism |
| CN206464540U (en) * | 2017-02-08 | 2017-09-05 | 宝钢德盛不锈钢有限公司 | A kind of operating platform of slide runner of continuous casting ladle hydraulic cylinder |
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2018
- 2018-05-30 CN CN201810539554.7A patent/CN108746577B/en active Active
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| Publication number | Publication date |
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| CN108746577A (en) | 2018-11-06 |
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