CN102000789A - Continuous casting machine and small square billet soft reduction device - Google Patents
Continuous casting machine and small square billet soft reduction device Download PDFInfo
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- CN102000789A CN102000789A CN201010578251XA CN201010578251A CN102000789A CN 102000789 A CN102000789 A CN 102000789A CN 201010578251X A CN201010578251X A CN 201010578251XA CN 201010578251 A CN201010578251 A CN 201010578251A CN 102000789 A CN102000789 A CN 102000789A
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- square billet
- little square
- screwdown gear
- roller
- depress
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Abstract
The invention relates to a small square billet continuous casting machine comprising a crystallizer, a strand support roller bed, a soft reduction device and a tension leveler, wherein the soft reduction device is arranged in a solidification tail end area of casting blanks and comprises at least one group of reduction units; each group of reduction units is a reduction system consisting of two pairs of upper compression rollers and lower compression rollers; the size of a roller gap formed between the upper compression roller and the lower compression rollers corresponds to the specification of the small square billets; and the length of the reducable interval of the soft reduction device is matched with the length of the solidification tail end area of the small square billets. The invention also relates to the soft reduction device of the small square billet continuous casting machine. The invention can improve the density inside the square billets, so that the phenomena of center porosity and center segregation of the small square billets can be effectively controlled.
Description
Technical field
The present invention relates to the metallurgical continuous casting field, particularly relate to a kind of conticaster and be applied to the light screwdown gear of little square billet of this conticaster.
Background technology
In field of iron and steel smelting, conticaster is used for molten steel is cast as solid shape.Referring to Fig. 1, existing conticaster is shown, comprise crystallizer 11, roller-way 12, light pressure device 13 and straightening machine 14.The pouring molten steel of converter or electric furnace is in crystallizer 11, and crystallizer 11 is cast as it strands 15 such as slab or square billet, by the dummy bar (not shown) strand 15 is drawn to cooling forming on the roller-way 12.
But the last pressure roller 131 of existing light screwdown gear 13 is installed in respectively on the different frame (not shown)s with lower compression roller 132, be subjected to the restriction of rack construction, the roller spacing is bigger, but the pressure range of Xing Chenging is also bigger like this, and little square billet section is little, the pulling rate range is bigger, but little square billet enters the pressure range of light screwdown gear 13, but cause pressure range and little square billet seriously do not match, depress in the process in enforcement, cause problems such as little square billet center segregation, center porosity, central pipe easily, have a strong impact on the quality of little square billet.
Summary of the invention
Technical problem to be solved by this invention provides a kind of conticaster, and this conticaster can improve the density of little square billet inside, and the center porosity of little square billet and center segregation are effectively controlled.
A kind of billet caster of the present invention, comprise crystallizer, casting stream depressing table, light screwdown gear and straightening machine, light screwdown gear is arranged on the casting blank solidification end zone, light screwdown gear comprises that at least one group is depressed the unit, depress the press down system that the unit is made up of two pairs of last pressure rollers and lower compression roller for every group, the roll gap size that forms between last pressure roller and the lower compression roller is corresponding with little square billet specification, but the pressure range of light screwdown gear size adapts with little square billet solidification end zone length.
Preferably, described light screwdown gear is implemented to depress in the interval of little square billet solidification end zone length 1.0-2.5m.
Preferably, described light screwdown gear overall reduction is 5-18mm.
Preferably, the frame upper end is provided with sensor and oil cylinder, and sensor detects the gap values between rollers of pressure roller and lower compression roller not in the error range that setting value allows, and the opening degree of pressure roller and lower compression roller in the adjustment is moved in the position of control oil cylinder.
Preferably, at least two of described screwdown gear pairs of depress rollers concentrate in the frame.
Preferably, the driven roller of described straightening machine and screwdown gear is used to control the casting speed of little square billet, and in little square billet solidification end two-phase section scope, at least two pairs of depress rollers are implemented to depress to little square billet.
Preferably, the described roller footpath scope that goes up pressure roller and lower compression roller is diameter 420-500mm.
The present invention also provides a kind of light screwdown gear, and this light screwdown gear can improve the density of little square billet inside, and the center porosity of little square billet and center segregation are effectively controlled.
The light screwdown gear of a kind of conticaster of the present invention comprises that at least two groups gently depress the unit, gently depresses the unit for every group and goes up pressure roller and lower compression roller is formed by a pair of, and the roll gap the depressed interval size and the little square billet specification that form between last pressure roller and the lower compression roller adapt.
Preferably, at least two of described screwdown gear groups are depressed the unit and are concentrated in the frame.
Preferably, the driven roller of described straightening machine and screwdown gear is used to control the casting speed of little square billet, and in little square billet solidification end two-phase section scope, at least two groups are gently depressed the unit little square billet is implemented to depress.
Compared with prior art, the present invention has the following advantages:
But the pressure range of the light screwdown gear of conticaster of the present invention size adapts with little square billet, can improve and depress efficient, avoids cracking on little square billet surface.The roller footpath of the last pressure roller of the light screwdown gear of cause and lower compression roller is bigger, can effectively overcome little square billet corner resistance when depressing, and effectively enforcement is gently depressed.
It is densely arranged that each group of the present invention is gently depressed the unit, by control strand pulling rate, can in little square billet solidification end two-phase section scope, guarantee that at least two groups are gently pressed the unit that little square billet is implemented to depress, improve the density of little square billet inside, the center porosity of little square billet and center segregation are effectively controlled.
The light screwdown gear of the present invention is implemented to depress in the interval that little square billet solidifies latter end zone 1.0-2.5m, and overall reduction is at 5-18mm.Depress by effective enforcement, the solidification shrinkage that little square billet solidification end is produced is compensated, and reduces or has stoped liquid molten steel flow, makes the center segregation of little square billet and loose to elimination or alleviate.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use among prior art and the embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is existing conticaster structure cutaway view;
Fig. 2 is a conticaster structure cutaway view of the present invention;
Fig. 3 is the rack construction cutaway view of light screwdown gear;
Fig. 4 is the light screwdown gear first example structure cutaway view of the present invention;
Fig. 5 is the light screwdown gear second example structure cutaway view of the present invention;
Fig. 6 is light screwdown gear the 3rd example structure cutaway view of the present invention.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Referring to Fig. 2, conticaster of the present invention is shown, comprise crystallizer 11, roller-way 12, light screwdown gear 23 and straightening machine 14.It is terminal that light screwdown gear 23 is arranged on casting stream, comprises that six groups are gently depressed the unit, gently depresses the unit for every group and be made up of the last pressure roller 231 and the lower compression roller 232 that are arranged on the frame (not shown).Last pressure roller 231 and lower compression roller 232 are arranged on the frame, can be on the frame for movement so that the roller spacing of pressure roller 231 and lower compression roller 232 is less on every group, and the roller of last pressure roller 231 and lower compression roller 232 footpath is bigger, diameter 420-500mm, like this, but relative less in the pressure range of last pressure roller 231 and lower compression roller 232 formation, be fit to little square billet compacting.
When little square billet is drawn out in crystallizer 11, little square billet is in the outside and solidifies, inner liquefaction, after roller-way 12 moves a period of times, but enter in the pressure range of light screwdown gear 23, but should the pressure range size adapt, can improve and depress efficient, avoid cracking on little square billet surface with little square billet.Bigger because of the roller footpath of last pressure roller 231 and lower compression roller 232, when depressing, can effectively overcome little square billet corner resistance, effectively enforcement is gently depressed.
The light unit of pressing of each group of the present invention is densely arranged, pulling rate by control straightening machine 14, can be in little square billet solidification end two-phase section scope, at least guarantee that two groups are gently pressed the unit that little square billet is implemented to depress, improve the density of little square billet inside, the center porosity of little square billet and center segregation are effectively controlled.
Referring to Fig. 3, the rack construction of light pressure device 23 is shown.Frame 33 upper ends are provided with oil cylinder 32 and sensor 31, and driven roller 34 is installed in the middle of the frame 33, and driven roller connects motor 35 and reductor 36, and frame 33 belows are equipped with pressure roller 231 and lower compression roller 232.
Referring to Fig. 4, Fig. 5 and Fig. 6, the present invention can one depresses the unit and is arranged in the frame 33, also can depress the unit or a plurality of unit of depressing is arranged in the frame 33 with two.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. billet caster, comprise crystallizer, casting stream depressing table, light screwdown gear and straightening machine, light screwdown gear is arranged on the casting blank solidification end zone, it is characterized in that, light screwdown gear comprises that at least one group is depressed the unit, depress the unit for every group and go up the press down system that pressure roller and lower compression roller are formed by two pairs, the roll gap that forms between last pressure roller and lower compression roller size is corresponding with little square billet specification, but gently big or small the and little square billet solidification end zone length of the pressure range of screwdown gear adapts.
2. conticaster as claimed in claim 1 is characterized in that, described light screwdown gear is implemented to depress in the interval of little square billet solidification end zone length 1.0-2.5m.
3. conticaster as claimed in claim 1 is characterized in that, described light screwdown gear overall reduction is 5-18mm.
4. conticaster as claimed in claim 1, it is characterized in that the frame upper end is provided with sensor and oil cylinder, sensor detects the gap values between rollers of pressure roller and lower compression roller not in the error range that setting value allows, the opening degree of pressure roller and lower compression roller in the adjustment is moved in the position of control oil cylinder.
5. conticaster as claimed in claim 1 is characterized in that, at least two pairs of depress rollers of described screwdown gear concentrate in the frame.
6. conticaster as claimed in claim 1 is characterized in that, the driven roller of described straightening machine and screwdown gear is used to control the casting speed of little square billet, and in little square billet solidification end two-phase section scope, at least two pairs of depress rollers are implemented to depress to little square billet.
7. conticaster as claimed in claim 1 is characterized in that, the described roller footpath scope that goes up pressure roller and lower compression roller is diameter 420-500mm.
8. the light screwdown gear of a conticaster, it is characterized in that, comprise that at least two groups gently depress the unit, gently depress the unit for every group and go up pressure roller and lower compression roller is formed that the roll gap the depressed interval size and the little square billet specification that form between last pressure roller and the lower compression roller adapt by a pair of.
9. light screwdown gear as claimed in claim 8 is characterized in that, at least two groups of described screwdown gear are depressed the unit and concentrated in the frame.
10. light pressure device as claimed in claim 8 is characterized in that, the driven roller of described straightening machine and screwdown gear is used to control the casting speed of little square billet, and in little square billet solidification end two-phase section scope, at least two groups are gently depressed the unit little square billet is implemented to depress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010578251 CN102000789B (en) | 2010-12-08 | 2010-12-08 | Continuous casting machine and small square billet soft reduction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010578251 CN102000789B (en) | 2010-12-08 | 2010-12-08 | Continuous casting machine and small square billet soft reduction device |
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| CN102000789A true CN102000789A (en) | 2011-04-06 |
| CN102000789B CN102000789B (en) | 2013-01-30 |
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| CN 201010578251 Active CN102000789B (en) | 2010-12-08 | 2010-12-08 | Continuous casting machine and small square billet soft reduction device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303102A (en) * | 2011-09-30 | 2012-01-04 | 中冶南方工程技术有限公司 | Continuous casting process and continuous casting machine for extra-thick plate blank |
| CN103128237A (en) * | 2011-12-02 | 2013-06-05 | 中冶赛迪工程技术股份有限公司 | Extremely-thick slab caster and method for producing extremely-thick slabs thereof |
| CN103506586A (en) * | 2012-06-20 | 2014-01-15 | 鞍钢股份有限公司 | Continuous casting method for improving central shrinkage cavity of small high-carbon steel square billet |
| CN104001891A (en) * | 2014-06-17 | 2014-08-27 | 中冶连铸技术工程有限责任公司 | Online control method for continuous casting of small square billet through dynamic soft press and heavy press |
| CN104148604A (en) * | 2014-08-22 | 2014-11-19 | 中冶连铸技术工程有限责任公司 | Co-stand-column integral small-roller-space dynamic pressing-down tension leveler |
| CN104722731A (en) * | 2015-04-17 | 2015-06-24 | 中冶赛迪工程技术股份有限公司 | Method for eliminating central looseness of casting blank and improving density of casting blank |
| CN105344957A (en) * | 2015-11-10 | 2016-02-24 | 中冶京诚工程技术有限公司 | Fan-shaped section type withdrawal and straightening device and withdrawal and straightening equipment |
| CN109261920A (en) * | 2018-10-26 | 2019-01-25 | 中冶连铸技术工程有限责任公司 | Continuous small-billet casting list roller reduction method and equipment |
| CN109732049A (en) * | 2019-02-21 | 2019-05-10 | 东北大学 | A kind of vertical throwing conticaster of small billet and soft reduction process device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2456868Y (en) * | 2000-09-21 | 2001-10-31 | 中国冶金建设集团包头钢铁设计研究总院 | Continuous casting light press down device |
| US20020189783A1 (en) * | 2001-06-19 | 2002-12-19 | Michael Poran | Continuous casting apparatus with soft reduction |
| CN1393308A (en) * | 2001-06-29 | 2003-01-29 | 中国冶金建设集团包头钢铁设计研究总院 | Light pressing method and apparatus for conticast |
| CN2579561Y (en) * | 2002-11-27 | 2003-10-15 | 钢铁研究总院 | Continuous blank withdrawal straightening device with light pressing function |
| DE10236367A1 (en) * | 2002-08-08 | 2004-02-19 | Sms Demag Ag | Dynamic control of a casting strand made from steel on both sides of roll segments used in a continuous casting installation comprises using the roll segments in a cold strand, hot strand and/or soft reduction region |
| CN2799126Y (en) * | 2005-06-24 | 2006-07-26 | 西安重型机械研究所 | Hydraulic soft-reduction segment |
| CN101554650A (en) * | 2009-05-22 | 2009-10-14 | 东北大学 | Method for controlling online calibration of pulling-straightening roller gap under light pressure of bloom caster |
-
2010
- 2010-12-08 CN CN 201010578251 patent/CN102000789B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2456868Y (en) * | 2000-09-21 | 2001-10-31 | 中国冶金建设集团包头钢铁设计研究总院 | Continuous casting light press down device |
| US20020189783A1 (en) * | 2001-06-19 | 2002-12-19 | Michael Poran | Continuous casting apparatus with soft reduction |
| CN1393308A (en) * | 2001-06-29 | 2003-01-29 | 中国冶金建设集团包头钢铁设计研究总院 | Light pressing method and apparatus for conticast |
| DE10236367A1 (en) * | 2002-08-08 | 2004-02-19 | Sms Demag Ag | Dynamic control of a casting strand made from steel on both sides of roll segments used in a continuous casting installation comprises using the roll segments in a cold strand, hot strand and/or soft reduction region |
| CN2579561Y (en) * | 2002-11-27 | 2003-10-15 | 钢铁研究总院 | Continuous blank withdrawal straightening device with light pressing function |
| CN2799126Y (en) * | 2005-06-24 | 2006-07-26 | 西安重型机械研究所 | Hydraulic soft-reduction segment |
| CN101554650A (en) * | 2009-05-22 | 2009-10-14 | 东北大学 | Method for controlling online calibration of pulling-straightening roller gap under light pressure of bloom caster |
Non-Patent Citations (2)
| Title |
|---|
| 《钢铁》 20091231 谢长川 动态轻压下技术的研发及运用 第44卷, 第12期 * |
| 谢长川: "动态轻压下技术的研发及运用", 《钢铁》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303102A (en) * | 2011-09-30 | 2012-01-04 | 中冶南方工程技术有限公司 | Continuous casting process and continuous casting machine for extra-thick plate blank |
| CN103128237A (en) * | 2011-12-02 | 2013-06-05 | 中冶赛迪工程技术股份有限公司 | Extremely-thick slab caster and method for producing extremely-thick slabs thereof |
| CN103128237B (en) * | 2011-12-02 | 2014-08-06 | 中冶赛迪工程技术股份有限公司 | Extremely-thick slab caster and method for producing extremely-thick slabs thereof |
| CN103506586B (en) * | 2012-06-20 | 2016-01-20 | 鞍钢股份有限公司 | A kind of continuous cast method improving high carbon steel billet central pipe |
| CN103506586A (en) * | 2012-06-20 | 2014-01-15 | 鞍钢股份有限公司 | Continuous casting method for improving central shrinkage cavity of small high-carbon steel square billet |
| CN104001891A (en) * | 2014-06-17 | 2014-08-27 | 中冶连铸技术工程有限责任公司 | Online control method for continuous casting of small square billet through dynamic soft press and heavy press |
| CN104001891B (en) * | 2014-06-17 | 2016-08-31 | 中冶连铸技术工程有限责任公司 | On-Line Control Method under a kind of continuous small-billet casting dynamic soft-reduction and weight |
| CN104148604B (en) * | 2014-08-22 | 2016-04-06 | 中冶连铸技术工程有限责任公司 | Column integration pony roll spacing dynamic draught withdrawal straightening machine altogether |
| CN104148604A (en) * | 2014-08-22 | 2014-11-19 | 中冶连铸技术工程有限责任公司 | Co-stand-column integral small-roller-space dynamic pressing-down tension leveler |
| CN104722731A (en) * | 2015-04-17 | 2015-06-24 | 中冶赛迪工程技术股份有限公司 | Method for eliminating central looseness of casting blank and improving density of casting blank |
| CN105344957A (en) * | 2015-11-10 | 2016-02-24 | 中冶京诚工程技术有限公司 | Fan-shaped section type withdrawal and straightening device and withdrawal and straightening equipment |
| CN105344957B (en) * | 2015-11-10 | 2018-02-09 | 中冶京诚工程技术有限公司 | A kind of fan-shaped segment type straightening device and pulling-straightening equipment |
| CN109261920A (en) * | 2018-10-26 | 2019-01-25 | 中冶连铸技术工程有限责任公司 | Continuous small-billet casting list roller reduction method and equipment |
| CN109732049A (en) * | 2019-02-21 | 2019-05-10 | 东北大学 | A kind of vertical throwing conticaster of small billet and soft reduction process device |
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