CN115283632B - Method for reducing production of non-fixed-length billets during shutdown of small square billet continuous casting machine - Google Patents
Method for reducing production of non-fixed-length billets during shutdown of small square billet continuous casting machine Download PDFInfo
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- CN115283632B CN115283632B CN202210926309.8A CN202210926309A CN115283632B CN 115283632 B CN115283632 B CN 115283632B CN 202210926309 A CN202210926309 A CN 202210926309A CN 115283632 B CN115283632 B CN 115283632B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009749 continuous casting Methods 0.000 title abstract description 11
- 238000004519 manufacturing process Methods 0.000 title description 5
- 238000005266 casting Methods 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000004513 sizing Methods 0.000 claims description 4
- 238000009628 steelmaking Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
-
- 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
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention belongs to the field of steelmaking continuous casting, and relates to a method for reducing the generation of non-fixed-length billets when a small square billet continuous casting machine is stopped.
Description
Technical Field
The invention belongs to the field of steelmaking continuous casting, and relates to a method for reducing the generation of non-fixed-length billets produced by stopping a small square billet continuous casting machine.
Background
In the continuous casting production link of the steelmaking production process flow, in order to meet the blank sizing requirement required by steel rolling, the casting blank needs to be cut off by a cutting vehicle according to a certain length, after molten steel continuous casting is carried out for a period of time, continuous casting machine equipment needs to be stopped for maintenance, the tail part of the casting blank needs to be cut off due to quality defects, the casting stop time of each flow needs to be controlled in the same way, the cutting quantity is minimum while the sizing requirement is met, the residual molten steel in a tundish is not out of standard, and the stop time is shortened while waste is avoided.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for reducing the occurrence of non-fixed-length billets in a continuous casting machine for small billets, optimizing the casting downtime per stream and reducing the occurrence of non-fixed-length billets.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for reducing the occurrence of off-line non-sizing billets in a billet caster comprising the steps of:
s1, calculating the rest length distance after X times of length setting according to a known cutting origin, compensating the rest length distance to the length required by X+1 times of length, adding the compensation cutting length, and then making a flow cutting mark beside a cut roller way casting flow, and calculating the weight of molten steel after the length setting and the compensation cutting length to be W;
s2, N-stream casting during tail casting:
s21, when the residual molten steel amount in the tundish is (N-1) Wt, performing flow breaking treatment on two flows of which the head of a casting blank preferentially reaches a flow breaking mark;
s22, when the residual molten steel amount in the tundish is (N-3) Wt, performing flow breaking treatment on two flows of which the head of a casting blank preferentially reaches a flow breaking mark;
s23, when the residual molten steel amount in the tundish is (W+2) t, the head of the casting blank preferentially reaches the first flow of the flow stop mark to perform flow stop treatment;
s24, stopping pouring when the flow blank head reaches the flow stop mark.
The invention has the beneficial effects that: the method for reducing the generation of the non-fixed-length billet during the stop of the small square billet continuous casting machine reduces the non-fixed-length billet; the yield of the casting machine is improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, a method for reducing the occurrence of non-fixed-length billets during the shutdown of a billet caster comprises the following steps:
s1, calculating the rest length distance after X times of length setting according to a known cutting origin, compensating the rest length distance to the length required by X+1 times of length, adding the compensation cutting length, and then making a flow cutting mark beside a cut roller way casting flow, and calculating the weight of molten steel after the length setting and the compensation cutting length to be W;
s2, N-stream casting during tail casting:
s21, when the residual molten steel amount in the tundish is (N-1) Wt, performing flow breaking treatment on two flows of which the head of a casting blank preferentially reaches a flow breaking mark;
s22, when the residual molten steel amount in the tundish is (N-3) Wt, performing flow breaking treatment on two flows of which the head of a casting blank preferentially reaches a flow breaking mark;
s23, when the residual molten steel amount in the tundish is (W+2) t, the head of the casting blank preferentially reaches the first flow of the flow stop mark to perform flow stop treatment;
s24, stopping pouring when the flow blank head reaches the flow stop mark.
The invention reduces the production of non-fixed-length blanks to less than or equal to 1 in the traditional cut-off operation method during cut-off casting.
In the embodiment, because the drawing speed of each stream is different, the casting length of each stream has larger difference, the rest casting fixed-length blank book is calculated through the weight of the rest molten steel in the tundish, the casting downtime of each stream is optimized, and the non-fixed-length blank is reduced.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (1)
1. A method for reducing the occurrence of off-line non-sizing billets in a billet caster comprising the steps of:
s1, calculating the rest length distance after X times of length setting according to a known cutting origin, compensating the rest length distance to the length required by X+1 times of length, adding the compensation cutting length, and then making a flow cutting mark beside a cut roller way casting flow, and calculating the weight of molten steel after the length setting and the compensation cutting length to be W;
s2, N-stream casting during tail casting:
s21, when the residual molten steel amount in the tundish is (N-1) Wt, performing flow breaking treatment on two flows of which the head of a casting blank preferentially reaches a flow breaking mark;
s22, when the residual molten steel amount in the tundish is (N-3) Wt, performing flow breaking treatment on two flows of which the head of a casting blank preferentially reaches a flow breaking mark;
s23, when the residual molten steel amount in the tundish is (W+2) t, the head of the casting blank preferentially reaches the first flow of the flow stop mark to perform flow stop treatment;
s24, stopping pouring when the flow blank head reaches the flow stop mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926309.8A CN115283632B (en) | 2022-08-03 | 2022-08-03 | Method for reducing production of non-fixed-length billets during shutdown of small square billet continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926309.8A CN115283632B (en) | 2022-08-03 | 2022-08-03 | Method for reducing production of non-fixed-length billets during shutdown of small square billet continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115283632A CN115283632A (en) | 2022-11-04 |
| CN115283632B true CN115283632B (en) | 2024-03-12 |
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|---|---|---|---|
| CN202210926309.8A Active CN115283632B (en) | 2022-08-03 | 2022-08-03 | Method for reducing production of non-fixed-length billets during shutdown of small square billet continuous casting machine |
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Citations (17)
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| JPS6160250A (en) * | 1984-08-31 | 1986-03-27 | Hitachi Ltd | Method for controlling cutting with continuous casting installation |
| JPS62179858A (en) * | 1986-02-03 | 1987-08-07 | Mitsubishi Heavy Ind Ltd | Cutting length controlling device |
| WO1988000504A1 (en) * | 1986-07-21 | 1988-01-28 | Zimmermann & Jansen Gmbh | Process for controlling a multi-line casting plant |
| JPH0985396A (en) * | 1995-09-25 | 1997-03-31 | Nippon Steel Corp | Method for completing casting in continuous casting |
| JPH09253811A (en) * | 1996-03-27 | 1997-09-30 | Kawasaki Steel Corp | Method for cutting continuously cast slab |
| JP2000317583A (en) * | 1999-05-07 | 2000-11-21 | Nippon Steel Corp | Casting control method in billet continuous casting equipment |
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2022
- 2022-08-03 CN CN202210926309.8A patent/CN115283632B/en active Active
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| JPS6160250A (en) * | 1984-08-31 | 1986-03-27 | Hitachi Ltd | Method for controlling cutting with continuous casting installation |
| JPS62179858A (en) * | 1986-02-03 | 1987-08-07 | Mitsubishi Heavy Ind Ltd | Cutting length controlling device |
| WO1988000504A1 (en) * | 1986-07-21 | 1988-01-28 | Zimmermann & Jansen Gmbh | Process for controlling a multi-line casting plant |
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| JPH09253811A (en) * | 1996-03-27 | 1997-09-30 | Kawasaki Steel Corp | Method for cutting continuously cast slab |
| JP2000317583A (en) * | 1999-05-07 | 2000-11-21 | Nippon Steel Corp | Casting control method in billet continuous casting equipment |
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| CN115283632A (en) | 2022-11-04 |
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