CN1887478A - Continuous steel billet casting process and apparatus - Google Patents
Continuous steel billet casting process and apparatus Download PDFInfo
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- CN1887478A CN1887478A CN 200610086050 CN200610086050A CN1887478A CN 1887478 A CN1887478 A CN 1887478A CN 200610086050 CN200610086050 CN 200610086050 CN 200610086050 A CN200610086050 A CN 200610086050A CN 1887478 A CN1887478 A CN 1887478A
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- crystallizer
- tundish
- sheet billet
- casting apparatus
- fuse
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Abstract
The present invention discloses continuous steel billet casting method and apparatus. The method is setting inert gas protected area with certain inert gas pressure maintained between the pouring basket and the crystallizer of the continuous casting apparatus. The continuous steel billet casting apparatus includes a pouring basket, a crystallizer, a vibration mechanism, a secondary cooling area, a withdraw unit, a bending unit, an curved track and a straightener. Between the pouring basket and the crystallizer, is set one inert gas protecting cover with cylindrical cover, sliding sleeve and gas inlet. The present invention can raise the quality of the thin steel billet and avoid the blocking of the inlet of the crystallizer cause by molten steel.
Description
Technical field
The continuous casting of the sheet billet of the casting apparatus that the present invention relates to a kind of continuous cast method of sheet billet and be used for this method, especially small dimension.
Background technology
The sheet billet of present small dimension has following deficiency in the process of continuous casting:
1, the sheet billet of small dimension is in the process of continuous casting; generally do not protect cast; can cause the secondary oxidation of molten steel like this; sometimes also can adopt long nozzle covering slag protection cast; but form nonmetal oxide inclusion with long nozzle and the molten steel that refractory material is made, improper if the while covering slag is selected for use, also can produce new nonmetallic inclusion thing in the molten steel; these nonmetallic inclusion things can damage the quality of sheet billet, in addition the price comparison costliness of covering slag.
2, in the process of pouring molten steel, the flow phenomenon that looses can appear in molten steel, and the molten steel of endoporus both sides, plane makes progress fast, solidifies to the inside on the crystallizer of present small dimension continuous-casting sheet billet, until with the endoporus shutoff, pouring molten steel can't be carried out.
3, present crystallizer generally adopts lubricating oil to be lubricated, but because the oil circuit fuel feeding is inhomogeneous, the time easily causes in cast and is stained with stickingly between base shell and the crystallizer vestibule, causes bleedout stopping production accident.
4, now general centering is adopted the club method for centering, this method is fairly simple, but this centering method low precision, can cause that liquid heart shell thickness is inhomogeneous in the crystallizer, increase the resistance of throwing, influence pulling rate and output, bleedout appears in serious meeting, cause stopping production, can influence the inherent quality of sheet billet simultaneously, cause microstructure segregation and component segregation.
Summary of the invention
The casting apparatus that the invention provides the continuous cast method of sheet billet and be used for this method, it can improve the quality of sheet billet, prevents the shutoff of molten steel to the crystallizer inlet.
The present invention has adopted following technical scheme: a kind of continuous cast method of sheet billet, between the tundish of casting apparatus and crystallizer, be provided with the inert gas shielding district, and inert gas maintains pressure in the protection zone.
It is unimpeded that the endoporus of the up-hole plate of described crystallizer keeps, and during crystallizer work, keeps lubricated between its inner chamber and the molten steel base shell.The center, the mouth of a river of described tundish and the lumen centers of crystallizer should be on same axis.
The present invention also provides a kind of casting apparatus of sheet billet; it comprises tundish, crystallizer, vibrating mechanism, secondary cooling zone; Blank drawing machine, bending machine, arc-shaped guide rail and straightener; it is characterized in that being provided with between described tundish and the crystallizer inert gas shielding cover; it is provided with cylindrical cover; upper end in cylindrical cover is provided with sliding sleeve, and the top of cylindrical cover side is provided with suction nozzle, and sliding sleeve matches with the slideway of both sides, the mouth of a river, tundish bottom.
The rear portion of described straightener is provided with sheet billet water-cooled cutting torch.The plane is provided with sealing ring on the described sliding sleeve.Described cylindrical cover is a multi-layer refractory fibre cloth, and its interlayer and surfaces externally and internally scribble fire-resistant enhancing coating.
The both sides that endoporus is close on the last plane of described crystallizer up-hole plate are provided with the triangle member, the coverage when its length is loose stream greater than molten steel.Crystallizer is provided with lubricant passage way, lubricant passage way is provided with the oil-feed screwed hole, the oil-feed screwed hole is arranged on the up-hole plate, the oil-feed screwed hole communicates with the oil groove of up-hole plate lower plane, plane between the peripheral oil groove of the rectangle endoporus of last plate hole and oil circuit is higher than the lower plane of up-hole plate, forms annular slot between the plane on the lower plane inner ring oil groove of up-hole plate and the crystallizer.
Be provided with centralising device in the mouth of a river of described tundish and the inner chamber of crystallizer, the center, the mouth of a river of centralising device and tundish and the lumen centers of crystallizer are on same axis, centralising device comprises handle, cone, fuse, vertical line and plumb bob, cone matches with the conical bore at brick cup center, tundish bottom when centering, fixedly connected with handle in the upper end of cone, the lower end is connected with fuse, the external diameter of fuse is less than the base diameter of the conical bore at brick cup center, tundish bottom, cone and handle, fuse is on same axis, the side of fuse along fuse radially, along the orthogonal narrow groove of axis, the upper end of described vertical line is connected with the center at cone top, and the lower end is connected with plumb bob.
The present invention has following beneficial effect: be provided with the inert gas shielding district between tundish and crystallizer, be provided with the inert gas shielding cover between tundish and the crystallizer, can prevent molten steel oxidation like this, realize molten steel protection cast, improve the quality of sheet billet.Unimpeded for the endoporus molten steel of realizing the crystallizer up-hole plate, the crystallizer up-hole plate endoporus both sides of casting apparatus of the present invention are provided with the triangle member, can make the molten steel of the stream that looses flow into crystallizer along horn mouth like this, keep endoporus unimpeded of crystallizer up-hole plate.The lower plane of crystallizer up-hole plate is provided with lubricant passage way, and oil circuit can make between crystallizer and the sheet billet evenly lubricated, prevents to be stained with between " the liquid heart " base shell and the crystallizer vestibule sticking, suppresses the generation of bleedout stopping production accident effectively.The present invention is provided with centralising device, and centralising device can carry out centering easily and fast, guarantees that effectively middle water containing opening and crystallizer are coaxial, makes liquid heart shell thickness even, reduces the resistance of throwing, improves pulling rate and output, prevents bleedout generation stopping production accident.Be provided with the water-cooled cutting torch between straightener and the sheet billet, it can carry out sheet billet fixed length cooling cutting, also can carry out hot continuous rolling or hot de-scaling.
Description of drawings
Fig. 1 is the structural representation of casting apparatus of the present invention
Fig. 2 is the structural representation of inert gas shielding cover of the present invention
Fig. 3 is the structural representation of crystallizer triangle member of the present invention
Fig. 4 is the structural representation of crystallizer up-hole plate lubricant passage way of the present invention
Fig. 5 is the structural representation of centralising device of the present invention
The specific embodiment
The invention provides a kind of continuous cast method of sheet billet, it is to be provided with the inert gas shielding district between the tundish 2 of casting apparatus and crystallizer 3, and the inert gas in the inert gas shielding district maintains certain pressure, can realize molten steel protection cast.It is unimpeded that the endoporus of the up-hole plate 17 of crystallizer 3 keeps, during crystallizer 3 work, keep lubricated between its inner chamber and the molten steel base shell, especially big facet is evenly lubricated, must not be stained with sticking, the center, the mouth of a river of tundish 2 and the lumen centers of crystallizer 3 should must guarantee that liquid heart sheet billet shell thickness is even on same axis.
According to Fig. 1; Fig. 2; Fig. 3; Fig. 4 and Fig. 5; the invention provides a kind of casting apparatus of sheet billet; it comprises tundish 2; crystallizer 3; vibrating mechanism 13; secondary cooling zone 4; Blank drawing machine 5; bending machine 6; arc-shaped guide rail 7 and straightener 11; the rear portion of straightener 11 is provided with sheet billet water-cooled cutting torch 10; it can carry out sheet billet fixed length cooling cutting; also can carry out hot continuous rolling or hot de-scaling; between tundish 2 and crystallizer 3, be provided with inert gas shielding cover 14; it is provided with cylindrical cover 29; cylindrical cover 29 is a multi-layer refractory fibre cloth; its interlayer and surfaces externally and internally scribble fire-resistant enhancing coating, are provided with sliding sleeve 31 in the upper end of cylindrical cover 29, and the plane is provided with sealing ring 32 on the sliding sleeve 31; sliding sleeve 31 matches with the slideway of both sides, the mouth of a river, tundish 2 bottom, and the top of cylindrical cover 29 sides is provided with suction nozzle 30.The both sides that endoporus is close on the last plane of crystallizer 3 up-hole plates are provided with triangle member 15, and triangle member 15 can be common refractory, also can be metal material, its length be molten steel when loosing stream coverage (1.5-2) doubly.On crystallizer 3, be provided with lubricant passage way, lubricant passage way is provided with oil-feed screwed hole 22, oil-feed screwed hole 22 is arranged on the up-hole plate 17, oil-feed screwed hole 22 communicates with the oil groove 23 of up-hole plate 17 lower planes 21, plane between the peripheral oil groove of the rectangle endoporus of last plate hole 17 and oil circuit is higher than the lower plane of up-hole plate 17, form annular slot between the plane on the lower plane inner ring oil groove of up-hole plate 17 and the crystallizer 3, lubricating oil will be from this annulus endlessly to the rectangular inner cavity direction trickling of crystallizer 3, the lubricating oil at high temperature carbon granule behind the burning carbonate will adhere to the outer surface of sheet billet, make between the big facet of sheet billet and the crystallizer 3 and remain good lubricating status.In the inner chamber of the mouth of a river of tundish 2 and crystallizer 3, be provided with centralising device, the center, the mouth of a river of centralising device and tundish 2 and the lumen centers of crystallizer 3 are on same axis, centralising device comprises handle 28, cone 27, fuse 26, vertical line 25 and plumb bob 24, cone 27 matches with the conical bore at brick cup center, tundish 2 bottom when centering, fixedly connected with handle 28 in the upper end of cone 27, lower end and fuse 26 are rotationally connected, the external diameter of fuse 26 is less than the base diameter of the conical bore at brick cup center, tundish bottom, cone 27 and handle 28, fuse 26 is on same axis, the side of fuse 26 along fuse 26 radially, along the orthogonal narrow groove of axis, the upper end of vertical line 25 is connected with the center at cone 27 tops, and the lower end is connected with plumb bob 24.
Centering is the important step that embodies continuous casting process, centralising device is the important means of the company's of assurance accuracy of alignment, the plumb bob 24 that will have vertical line 25 is put into crystallizer 3 inner chamber certain depths by the conical bore at brick cup center, tundish 2 bottom, hand-held handle 28 makes cone 27 match with conical bore, at first rotate fuse 26, make its two vertical narrow grooves aim at the vertical and horizontal of crystallizer 3 up-hole plates 17 rectangle endoporus respectively, adjust the adjusting screw(rod) of four jiaos of tundish 2 bases then, make vertical line 25 in two narrow grooves of fuse 26, all be in the center, regulate the position of tundish at last, make vertical line 25 all be in the center of crystallizer 3 at vertical and horizontal at support plate.
Claims (10)
1, a kind of continuous cast method of sheet billet is characterized in that being provided with the inert gas shielding district between the tundish of casting apparatus and crystallizer, and inert gas maintains pressure in the gas shield district.
2, the continuous cast method of sheet billet according to claim 1 is characterized in that the endoporus of the up-hole plate of described crystallizer keeps unimpeded, during crystallizer work, keeps lubricated between its inner chamber and the molten steel base shell.
3,, it is characterized in that the lumen centers of the center, the mouth of a river of described tundish and crystallizer should be on same axis according to the continuous cast method of the described sheet billet of claim 1-2.
4, a kind of casting apparatus of sheet billet; it comprises tundish (2), crystallizer (3), vibrating mechanism (13), secondary cooling zone (4), Blank drawing machine (5), bending machine (6), arc-shaped guide rail (7) and straightener (11); it is characterized in that being provided with inert gas shielding cover (14) between described tundish (2) and the crystallizer (3); it is provided with cylindrical cover (29); be provided with sliding sleeve (31) in the upper end of cylindrical cover (29); the top of cylindrical cover (29) side is provided with suction nozzle (30), and sliding sleeve (31) matches with the slideway of both sides, the mouth of a river, tundish (2) bottom.
5, the casting apparatus of sheet billet according to claim 1 is characterized in that the rear portion of described straightener is provided with sheet billet water-cooled cutting torch.
6, the casting apparatus of sheet billet according to claim 1 is characterized in that described sliding sleeve (31) upward is provided with sealing ring (32) in the plane.
7, the casting apparatus of sheet billet according to claim 1 is characterized in that described cylindrical cover (29) is multi-layer refractory fibre cloth, and its interlayer and surfaces externally and internally scribble fire-resistant enhancing coating.
8, according to the casting apparatus of the described sheet billet of claim 1-4, the both sides that endoporus is close on the last plane that it is characterized in that described crystallizer (3) up-hole plate (17) are provided with triangle member (15), the coverage when its length is loose stream greater than molten steel.
9, according to the casting apparatus of the described sheet billet of claim 1-4, it is characterized in that crystallizer (3) is provided with lubricant passage way, lubricant passage way is provided with oil-feed screwed hole (22), oil-feed screwed hole (22) is arranged on the up-hole plate (17), oil-feed screwed hole (22) communicates with the oil groove (23) of up-hole plate (17) lower plane, plane between the peripheral oil groove of the rectangle endoporus of last plate hole and oil circuit is higher than the lower plane (21) of up-hole plate (17), and lower plane (21) the inner ring oil groove of up-hole plate (17) and crystallizer (3) are gone up between the plane and formed annular slot.
10, casting apparatus according to the described sheet billet of claim 1-4, it is characterized in that being provided with centralising device in the inner chamber of the mouth of a river of described tundish (2) and crystallizer (3), the lumen centers of the center, the mouth of a river of centralising device and tundish (2) and crystallizer (3) is on same axis, centralising device comprises handle (28), cone (27), fuse (26), vertical line (25) and plumb bob (24), cone when centering (27) matches with the conical bore at brick cup center, tundish (2) bottom, fixedly connected with handle (28) in the upper end of cone (27), the lower end is connected with fuse (26), the external diameter of fuse (26) is less than the base diameter of the conical bore at brick cup center, tundish (2) bottom, cone (27) and handle (28), fuse (26) is on same axis, the side of fuse (26) along fuse (26) radially, along the orthogonal narrow groove of axis, the upper end of described vertical line (25) is connected with the center at cone (27) top, and the lower end is connected with plumb bob (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100860501A CN100434207C (en) | 2006-07-21 | 2006-07-21 | Continuous steel billet casting process and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100860501A CN100434207C (en) | 2006-07-21 | 2006-07-21 | Continuous steel billet casting process and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1887478A true CN1887478A (en) | 2007-01-03 |
| CN100434207C CN100434207C (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100860501A Expired - Fee Related CN100434207C (en) | 2006-07-21 | 2006-07-21 | Continuous steel billet casting process and apparatus |
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| Country | Link |
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| CN (1) | CN100434207C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878348A (en) * | 2014-03-24 | 2014-06-25 | 中国重型机械研究院股份公司 | Magnesium alloy sheet belt continuous production device and technology |
| CN109093084A (en) * | 2018-09-29 | 2018-12-28 | 东北大学 | A kind of production method of continuous-casting sheet billet |
| CN111590041A (en) * | 2020-06-29 | 2020-08-28 | 上海大学 | Production device and heat treatment method of aluminum-lithium alloy plate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2727338A1 (en) * | 1994-11-30 | 1996-05-31 | Usinor Sacilor | CONTINUOUS CASTING DEVICE BETWEEN INHERENT COVER CYLINDERS |
| CN2341736Y (en) * | 1998-09-08 | 1999-10-06 | 重庆钢铁(集团)有限责任公司 | Gas protector for smelting pond of continuous casting machine |
| CH692184A5 (en) * | 2000-12-30 | 2002-03-15 | Main Man Inspiration Ag | Process for operating a strip casting machine comprises introducing a controlled amount of gas during casting into an inerting chamber so that the heat transition from the strip |
| JP2002361378A (en) * | 2001-06-12 | 2002-12-17 | Nippon Steel Corp | Continuous casting method for casting little in bubble defect |
| JP3802822B2 (en) * | 2002-03-04 | 2006-07-26 | 新日本製鐵株式会社 | Continuous casting method of cast slab with few bubble defects and steel material processed from the slab |
| JP2004009110A (en) * | 2002-06-07 | 2004-01-15 | Sumitomo Metal Ind Ltd | Method of continuously casting magnesium alloy |
| CN2928313Y (en) * | 2006-07-21 | 2007-08-01 | 江苏兴利来特钢有限公司 | Continuous casting device for thin plate blank |
-
2006
- 2006-07-21 CN CNB2006100860501A patent/CN100434207C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878348A (en) * | 2014-03-24 | 2014-06-25 | 中国重型机械研究院股份公司 | Magnesium alloy sheet belt continuous production device and technology |
| CN103878348B (en) * | 2014-03-24 | 2015-08-19 | 中国重型机械研究院股份公司 | A kind of magnesium alloy board continuous producing apparatus and technique |
| CN109093084A (en) * | 2018-09-29 | 2018-12-28 | 东北大学 | A kind of production method of continuous-casting sheet billet |
| CN111590041A (en) * | 2020-06-29 | 2020-08-28 | 上海大学 | Production device and heat treatment method of aluminum-lithium alloy plate |
| CN111590041B (en) * | 2020-06-29 | 2021-10-12 | 上海大学 | Heat treatment method of production device using aluminum-lithium alloy plate |
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| Publication number | Publication date |
|---|---|
| CN100434207C (en) | 2008-11-19 |
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Granted publication date: 20081119 Termination date: 20110721 |