CN113967727B - Continuous casting corner cleaning molten pool retainer - Google Patents
Continuous casting corner cleaning molten pool retainer Download PDFInfo
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- CN113967727B CN113967727B CN202111310849.5A CN202111310849A CN113967727B CN 113967727 B CN113967727 B CN 113967727B CN 202111310849 A CN202111310849 A CN 202111310849A CN 113967727 B CN113967727 B CN 113967727B
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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
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
- B22D11/1265—Accessories for subsequent treating or working cast stock in situ for cutting having auxiliary devices for deburring
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Abstract
The invention relates to a continuous casting billet corner cleaning molten pool retainer, which comprises a furling cover, a reaction cover, a slag gathering cover and a water cooling cover. The furling cover, the reaction cover and the slag gathering cover are arranged on the same central axis and are arranged on the inner ring of the retainer; the outer ring of the retainer is a water cooling cover, and a guide plate is arranged in the water cooling cover; the drawing cover is directly welded with the reaction cover, an opening is formed in the top end of the drawing cover, the drawing cover is directly welded with the reaction cover, the reaction cover is directly welded with the slag gathering cover, the water cooling cover is directly welded with the outer sides of the drawing cover, the reaction cover and the slag gathering cover, the front end of the water cooling cover is respectively connected with the water inlet and the water outlet on two sides, and the water cooling cover is directly welded with the mounting rib plate. The molten pool retainer is reasonable and novel in structure, can meet the requirements of gathering oxygen flow, promoting ferrite reaction and gathering slag when the corners of the continuous casting billets are cleaned, can ensure the working efficiency and improves the working stability.
Description
Technical Field
The invention belongs to the field of metallurgy, and particularly relates to a billet corner cleaning molten pool retainer which is specially used in a continuous casting billet corner cleaning device for gathering oxygen flow, promoting ferrite reaction and gathering steel slag flow.
Background
With the continuous development of society, the requirements of people on the quality of products are continuously improved, and the quality of continuous casting billets directly influences the performance and the surface quality of subsequent products. Corner cracks or subsurface inclusions exist at the right-angle corners of the continuous casting blank, so that the quality problems of edge cracking, perforation and the like of a hot-rolled coil plate can occur in the subsequent rolling process. The corner defect forming mechanism of the continuous casting billet is complex, and the influencing factors are widely recognized as a worldwide problem in the metallurgical field. The prior method for reducing the defects of the corner of the casting blank comprises manual flame cleaning, mechanical flame cleaning and corner cutting of the casting blank. The temperature limitation of the manual flame cleaning on the continuous casting billet is large, so that the consumption of oxygen and fuel is large, and the defects of low working efficiency, unstable cleaning quality, bad working environment and the like are overcome; the problems of large metal loss, low working efficiency and the like exist in the corner cut of the casting blank. Therefore, develop a high efficiency, stable continuous casting billet bight descaling machine becomes trend of great tendency, and the molten bath keeps the ware to be cleared up the continuous casting billet right angle and become the arc angle, eliminate the core component of continuous casting billet bight defect, continuous casting billet flame cleaning molten bath keeps the direction of motion that can retrain the oxygen flow, promote oxygen utilization ratio, thereby promote high-pressure pure oxygen air current and continuous casting billet bight to produce oxidation reaction, thereby get rid of bight defect, form glossy arc angle, can show when the continuous casting billet of clearing up into the arc angle gets into follow-up rolling and improve rolling quality, improve the metal yield. And the molten pool retainer has the function of gathering slag, promotes the slag to be cleaned, promotes the whole work efficiency, and the water cooling system can continuously cool the molten pool retainer, prolongs the service life.
Disclosure of Invention
The invention aims to provide a continuous casting billet corner cleaning molten pool retainer, which can gather oxygen flow during corner cleaning of a continuous casting billet, promote ferrite reaction and stably push a molten pool to realize continuous cleaning; the molten pool retainer concentrates the flame, the flame is gathered at the corner of the continuous casting billet, and the corner of the continuous casting billet is deeply cleaned to form an arc angle; the movement direction of the molten slag is restrained, so that the molten slag is convenient to clean; the cleaning quality is stable, and the cleaning surface is smooth, so that the corner defects of the continuous casting billet are removed, and smooth arc angles are left.
The invention provides a continuous casting billet corner cleaning molten pool retainer, which consists of a furling cover 1, a reaction cover 2, a slag gathering cover 3, a water cooling cover 4 and a mounting rib plate 5, wherein: the furling cover 1, the reaction cover 2 and the slag gathering cover 3 are coaxially arranged and are sequentially connected to form a molten pool retainer inner ring, a water cooling cover 4 is sleeved outside the molten pool retainer inner ring, the outer side of the water cooling cover 4 is connected with a mounting rib plate 5, and a guide plate 6 is mounted inside the water cooling cover 5; the mounting rib plate 5 is directly welded with the water cooling cover 4, holes are symmetrically formed in two sides of the water cooling cover 4, and a water inlet joint 7 and a water outlet joint 8 are welded at the two holes respectively; the molten pool retainer is used with a continuous casting billet corner cleaning burner in a matched manner.
In the invention, the axial end face of the molten pool retainer is in a 3/4 arc shape, the furling cover 2 is in a contraction shape, the reaction cover 2 is in a cylindrical shape, and the slag gathering cover 3 is in a contraction shape after expansion.
In the invention, the top end of the furling cover 1 is provided with an opening, the opening is in a semicircular shape, and the opening angle is 20-60 degrees.
In the invention, the position between the molten pool retainer and the continuous casting billet corner cleaning burner is matched and is on the same central line, the axial included angle between the continuous casting billet corner cleaning burner and the molten pool retainer is 10-25 degrees, and the distance between the continuous casting billet corner cleaning burner and the molten pool retainer is 100-200mm.
In the invention, the front end of the water cooling cover 4 is provided with an opening, the shape of the opening is consistent with that of the opening at the top end of the furling cover 1, and the overall shape of the water cooling cover 4 is consistent with that of the inner ring of the molten pool retainer.
In the invention, the guide plate 6 positioned in the water cooling cover 4 is arranged parallel to the central axis of the molten pool retainer.
In the invention, the furling cover 1 and the reaction cover 2, the reaction cover 2 and the slag gathering cover 3, the water cooling cover 4 and the furling cover 4, and the reaction cover 2 and the slag gathering cover 3 are respectively welded and sealed.
The invention has the beneficial effects that: oxygen flow sprayed by a molten pool retainer cleaning machine gun is gathered at the corner of the continuous casting billet, so that the oxygen utilization rate is improved, the ferrite reaction is promoted, the molten pool at the corner is stably pushed, the corner of the continuous casting billet is deeply cleaned, and a smooth arc angle is formed; the slag is gathered, the speed of oxygen flow impacting the corners of the continuous casting billet is increased, and the slag cleaning is further accelerated; the temperature of the molten pool retainer is continuously reduced, the service life is prolonged, and the cost is saved.
Drawings
FIG. 1 is a schematic structural view (isometric view) of the present invention;
FIG. 2 is a schematic structural view (top view) of the present invention;
reference numbers in the figures: 1 is a furling cover, 2 is a reaction cover, 3 is a slag gathering cover, 4 is a water cooling cover, 5 is an installation rib plate, 6 is a guide plate, 7 is a water inlet joint, and 8 is a water outlet joint.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1:
as shown in figures 1 and 2, the structure schematic diagram of the invention is provided, and the invention is composed of a furling cover 1, a reaction cover 2, a slag gathering cover 3, a water cooling cover 4 and a mounting rib plate 5. The furling cover 1, the reaction cover 2 and the slag gathering cover 3 are distributed on the inner layer of the molten pool retainer, the three parts are coaxial and sequentially arranged in front and back, the outer layer is sleeved with a water cooling cover 4, three guide plates 6 are arranged in the water cooling cover 4, and the outer side of the water cooling cover 4 is connected with a mounting rib plate 5; the furling cover 1 and the reaction cover 2, the reaction cover 2 and the slag accretion cover 3, the furling cover 1, the reaction cover 2, the slag accretion cover 3 and the water cooling cover 4 are respectively welded and sealed; the mounting rib plate 5 is directly welded on the outer side of the water cooling cover 4, the two sides of the water cooling cover 4 are symmetrically provided with holes, and the two holes are respectively used for welding a water inlet joint 7 and a water outlet joint 8. The retainer is reasonable and novel in structure, can meet the requirements of drawing in oxygen flow, promoting ferrite reaction and gathering steel slag flow direction when the corners of a continuous casting billet are cleaned, can ensure the working efficiency and improve the service life and the working stability. The end face of the molten pool retainer is 3/4 arc, the furling cover 1 is in a contraction shape, the reaction cover 2 is in a cylindrical shape, and the slag gathering cover 3 is in a contraction shape after expansion. The top opening of the furling cover 1 is in a semicircular angle shape, and the opening angle is between 20 and 60 degrees. The position between the melting bath retainer and the cleaning burner is matched on the same central axis, the axial included angle between the cleaning burner and the retainer at the corner of the continuous casting billet is 10-25 degrees, and the distance between the cleaning burner and the retainer is 100-200mm. The front end of the water cooling cover 4 is provided with an opening, the shape of the opening is consistent with that of the opening at the top end of the furling cover 1, and the whole shape of the water cooling cover 4 is consistent with that of the inner ring of the retainer. The guide plate 6 in the water cooling cover 4 is installed parallel to the central axis of the retainer.
The whole continuous casting billet corner cleaning molten pool retainer adopts a shape of contracting first, expanding then contracting, and the end surface is in a 3/4 circular arc shape.
The continuous casting billet bight clearance molten bath holder can guarantee that the ferrite reaction fully goes on, make the molten bath stably impel forward.
The continuous casting billet bight clearance molten bath keep ware have water-cooling cover 4 to cool down, extension molten bath keeps ware life.
The working principle of the invention is as follows: in the cleaning work process, draw in cover 1 and make the oxygen stream gathering at continuous casting billet bight, sufficient oxygen volume can take place the ferrite reaction with the iron in the continuous casting billet bight molten bath, the heat that the ferrite combustion released can continuously make the continuous casting billet melting around the reaction zone, thereby impel the clearance molten bath and stably impel forward, the molten bath keeps the position of motion of restraint cinder, the cinder that generates can be taken away by high-speed oxygen stream, thereby clear away continuous casting billet bight defect, leave smooth arc angle, and the heat release of burning in the clearance process can make and draw in cover 1, reaction cover 2 and gather slag cover 3 and be in the high temperature state, water-cooling cover 4 plays the effect of continuously cooling, increase of service life and working strength.
Claims (5)
1. Continuous casting billet bight clearance molten bath keeps ware, by drawing in cover (1), reaction cover (2), gathering sediment cover (3), water-cooling cover (4) and installation gusset (5) and forming, its characterized in that: the furling cover (1), the reaction cover (2) and the slag gathering cover (3) are coaxially arranged and are sequentially connected to form a molten pool retainer inner ring, a water cooling cover (4) is sleeved outside the molten pool retainer inner ring, the outer side of the water cooling cover (4) is connected with a mounting rib plate (5), and a guide plate (6) is mounted inside the water cooling cover (4); the mounting rib plate (5) is directly welded with the water cooling cover (4), holes are symmetrically formed in two sides of the water cooling cover (4), and the two holes are used for welding a water inlet joint (7) and a water outlet joint (8) respectively; the molten pool retainer is matched with a corner cleaning burner of the continuous casting billet for use; the position between the molten pool retainer and the continuous casting billet corner cleaning burner is matched, and the continuous casting billet corner cleaning burner and the molten pool retainer are on the same central line, the axial included angle between the continuous casting billet corner cleaning burner and the molten pool retainer is 10-25 degrees, and the distance between the continuous casting billet corner cleaning burner and the molten pool retainer is 100-200mm; the axial end face of the molten pool retainer is 3/4 arc, the furling cover (1) is in a contraction shape, the reaction cover (2) is in a cylinder shape, and the slag gathering cover (3) is in a contraction shape after expansion.
2. The slab corner cleaning bath holder as claimed in claim 1, wherein: the top end of the furling cover (1) is provided with an opening, the opening is in a semicircular shape, and the opening angle is 20-60 degrees.
3. The slab corner cleaning bath holder as claimed in claim 1, wherein: the front end of the water cooling cover (4) is provided with an opening, the shape of the opening is consistent with that of the opening at the top end of the furling cover (1), and the overall shape of the water cooling cover (4) is consistent with that of the inner ring of the molten pool retainer.
4. The slab corner cleaning bath holder as claimed in claim 1, wherein: the guide plate (6) positioned in the water cooling cover (4) is arranged parallel to the central axis of the molten pool retainer.
5. The slab corner cleaning bath holder as claimed in claim 1, wherein: the drawing cover (1) and the reaction cover (2), the reaction cover (2) and the slag gathering cover (3), the water cooling cover (4) and the drawing cover (1), the reaction cover (2) and the slag gathering cover (3) are respectively welded and sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310849.5A CN113967727B (en) | 2021-11-08 | 2021-11-08 | Continuous casting corner cleaning molten pool retainer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310849.5A CN113967727B (en) | 2021-11-08 | 2021-11-08 | Continuous casting corner cleaning molten pool retainer |
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| Publication Number | Publication Date |
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| CN113967727A CN113967727A (en) | 2022-01-25 |
| CN113967727B true CN113967727B (en) | 2023-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111310849.5A Active CN113967727B (en) | 2021-11-08 | 2021-11-08 | Continuous casting corner cleaning molten pool retainer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081324A (en) * | 1994-06-21 | 1996-01-09 | Nippon Supingu Kk | Nozzle for removing fused slag |
| JP2011036880A (en) * | 2009-08-10 | 2011-02-24 | Nippon Steel Corp | Scarfing device |
| CN102717169A (en) * | 2012-07-13 | 2012-10-10 | 上海东震冶金工程技术有限公司 | Automatic continuous casting billet flame cleaning device and operation method thereof |
| CN105436449A (en) * | 2015-12-25 | 2016-03-30 | 长沙凯瑞重工机械有限公司 | Off-line flame chamfering device for continuous cast slab |
| CN106424623A (en) * | 2016-10-21 | 2017-02-22 | 东北大学 | Device and method for cleaning continuous casting slab through lateral-frontal sweeping |
| CN206153523U (en) * | 2016-11-08 | 2017-05-10 | 武汉钢铁股份有限公司 | Continuous casting billet flame cleaning machine ignition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015245B (en) * | 2017-12-27 | 2019-08-06 | 鞍钢股份有限公司 | Hot blank corner crack online cleaning device and method |
| CN208595542U (en) * | 2018-03-31 | 2019-03-12 | 上海东震冶金工程技术有限公司 | Burner is cleared up in continuous casting billet corner |
-
2021
- 2021-11-08 CN CN202111310849.5A patent/CN113967727B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081324A (en) * | 1994-06-21 | 1996-01-09 | Nippon Supingu Kk | Nozzle for removing fused slag |
| JP2011036880A (en) * | 2009-08-10 | 2011-02-24 | Nippon Steel Corp | Scarfing device |
| CN102717169A (en) * | 2012-07-13 | 2012-10-10 | 上海东震冶金工程技术有限公司 | Automatic continuous casting billet flame cleaning device and operation method thereof |
| CN105436449A (en) * | 2015-12-25 | 2016-03-30 | 长沙凯瑞重工机械有限公司 | Off-line flame chamfering device for continuous cast slab |
| CN106424623A (en) * | 2016-10-21 | 2017-02-22 | 东北大学 | Device and method for cleaning continuous casting slab through lateral-frontal sweeping |
| CN206153523U (en) * | 2016-11-08 | 2017-05-10 | 武汉钢铁股份有限公司 | Continuous casting billet flame cleaning machine ignition |
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| CN113967727A (en) | 2022-01-25 |
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