CN201871696U - Narrow face copper plate of crystallizer with curved structure - Google Patents
Narrow face copper plate of crystallizer with curved structure Download PDFInfo
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- CN201871696U CN201871696U CN2010205869415U CN201020586941U CN201871696U CN 201871696 U CN201871696 U CN 201871696U CN 2010205869415 U CN2010205869415 U CN 2010205869415U CN 201020586941 U CN201020586941 U CN 201020586941U CN 201871696 U CN201871696 U CN 201871696U
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- copper plate
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- copper coin
- water channel
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Abstract
The utility model relates to the field of continuous casting of metals, in particular to a narrow face copper plate of a crystallizer with a curved structure. The narrow face copper plate comprises a plane area (2) and a curved area (3), wherein circular tube type cooling water channels (6) and/or rectangular cooling water channels (7) are uniformly distributed in the copper plate; the thickness of the edge and corner of the narrow face copper plate (1) is the maximum and more 10mm to 100mm than the thickness of the plane area (2) in the middle; and the curved area (3) and the plane area (2) are smoothly connected in a tangential way. The narrow face of the casting slab of the copper plate is raised outwards, so as to be beneficial to avoiding the cracking occurrence at the edge and corner of the casting billet to improve the surface quality of the hot-rolled sheet steel, and contribute to the prolonging of the service life of the copper plate.
Description
Technical field
The utility model relates to metal freezing and continuous casting field, specially refers to a kind of crystallizer narrow copper plate with curved-surface structure.
Background technology
In order to improve the market competitiveness, the many iron and steel enterprises of China all continually develop the variety steel of high added value on its slab or sheet blank continuous casting production line, especially produce the microalloying steel grade that contains elements such as niobium, vanadium, titanium.When casting this class steel grade, the mould at narrow copper coin generally adopts planar structure, the usually rectangular shape in strand bight.In the production process because copper coin surface, narrow limit exists wearing and tearing to a certain degree inevitably; in order to prevent casting billet surface generation longitudinal crack; narrow limit copper coin must have enough back draughts in operating process; adopt the strand leptoprosopy of this technology casting to concave down usually; make strand bight even be acute angle shape; the cooling that the bight is subjected to is stronger; its temperature is lower relatively; bending section or aligning section at secondary cooling zone; the brittle zone scope that the surface temperature of strand in the bight very easily enters micro alloyed steel; thereby cause the generation of transverse corner crack, limited the large-scale production of micro alloyed steel.
In order to solve the corner portion transverse crack problem of micro alloyed steel, the major measure of metallargist's employing at present comprises raising steel quality, optimization and stable covering slag performance, optimizes the process for cooling of secondary cooling zone etc.Minority iron and steel enterprise has adopted the chamfering crystallizer technology, and the target of this technology is to make the original right angle of strand change two obtuse angles into, concentrates in order to the stress of eliminating the strand bight, reaches the purpose that improves the bight temperature simultaneously.
China utility model patent No.02214026.3 (notification number: CN 2547438Y, title " the narrow limit of continuous casting crystallizer for plate billet copper coin ") has proposed a kind of crystallizer narrow copper plate with the side chamfering, and its chamfer dimesion is 6～10mm, and angle is 45 degree.
China utility model patent No.200720089029.7 (publication number: CN 201132207Y, title " a kind of plate slab crystallizer ") a kind of narrow copper plate that has fillet surface has been proposed, curved surface is an arc surface, the radius of circular arc chamfering is 2～10mm, so its chamfering quantity not sufficient 10mm, the bight cooling realizes that by copper coin self heat conduction the shortcoming of this patent is that the chamfering amount is little, and the lifting amplitude of strand bight temperature is limited.
China's document " coupled thermal mechanical of bloom in the continuous cast mold " (literature reference: Chen Yong, Luo Xin, Shen Houfa. iron and steel .2008,43 (3), p33～37) to the narrow copper plate of crystallizer band side chamfering in bloom continuous casting production diabatic process and the stress distribution of base shell analyze, the result shows: if the narrow copper plate of band side chamfering adopts bigger chamfering such as 25mm, angle is 45 degree, the strand heat transfer condition variation of crystallizer medial surface chamfering place correspondence, bight solidified shell temperature raises, the shell thickness attenuate, and cause the corner crack of strand thus; When the crystallizer chamfering diminished to 12mm, angle was 45 degree, can improve the heat transfer condition in strand bight, reduced solidified shell bight temperature, increased thickness of solidified slab shell in secondary, helped alleviating and prevented the strand corner crack.
The problem of chamfering crystallizer existence at present is that the strand of casting is all rough mild in the transition of chamfered area, in the casting process, the thermal stress that strand leptoprosopy chamfered area is subjected to, bending stress and aligning stress are relatively poor in the uniformity that makes progress in week, the strand bight inevitably can exist on the top of secondary cooling zone and spreads in addition, make the strand bight trend towards the right angle thus by the obtuse angle, the transverse crack of strand corner portion is difficult to eliminate, and has reduced the technique effect of chamfering crystallizer.For this reason, the utility model proposes a kind of crystallizer narrow copper plate with curved-surface structure.
Summary of the invention
The purpose of this utility model provides a kind of crystallizer narrow copper plate with curved-surface structure, can farthest optimize the leptoprosopy shape of strand, eliminates the corner portion crack defect of microalloying steel grade.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of crystallizer narrow copper plate with curved-surface structure, comprise plane domain 2 and curved surface area 3, copper coin inside is evenly distributed with tubular type and/or rectangle cooling water channel, the plane domain 2 of copper coin is positioned at the middle part, copper coin corner portion thickness maximum, than the big 10～100mm of copper plate thickness of middle part plane domain 2, curved surface area 3 is connected so that tangent mode is smooth on cross-sectional direction with plane domain 2.
The curve 4 of described curved surface area on cross-sectional direction is following a kind of in several: 1. combined by 1 broken line and 1 camber line; 2. be made up of 1 or 2 camber line, wherein, described camber line is a kind of in circular arc line, hyperbola or the parabola.
The overall width of described copper coin is 120～480mm, and the width of plane domain 2 is 0～95% of a copper coin overall width, and the working face of narrow copper plate 1 can all be a curved-surface structure.
Described copper coin is a line of symmetry with the centre of surface line on width, is symmetrical distribution; On short transverse, its working face is a kind of in single tapering, double tapered or the many taperings.
The curve 4 of described copper coin curved surface area on cross section is 15 °～60 ° with the angle α that side forms.
Inner tubular type cooling water channel 6 and/or the rectangle cooling water channel 7 that connects on the equally distributed short transverse that adopt of described copper coin, wherein limit, the side portion curved surface area of narrow copper plate is a tubular type cooling water channel 6, central region is tubular type cooling water channel 6 or rectangle cooling water channel 7, first water channel of limit portion is 8～10mm apart from the minor distance of W of copper coin side, space D between the adjacent water channel is 15～25mm, the root of whole water channels of arranging in the copper coin is consistent apart from S apart from working face, is 12～35mm.
Described copper coin has one of following feature at least:
I) on plane domain 2 working faces and curved surface area 3 working faces nickel coating, ferronickel coating or nickel cobalt coating are arranged;
II) material of whole copper coin is a kind of in silver-bearing copper, chromium zirconium copper, phosphor-copper, the beryllium copper.
Compared with prior art, the slab leptoprosopy that the utility model adopts copper coin to cast presents the shape to outer lug, this helps being avoided the generation of strand corner portion crackle, thereby promotes the raising of the surface quality of hot rolled steel plate, and helps to prolong the service life of this copper coin.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the present utility model, and this figure right side is its A-A longitudinal section schematic diagram;
Fig. 2 is the structural representation of the utility model second embodiment;
Fig. 3 is the cross-sectional structure schematic diagram of the utility model first embodiment;
Fig. 4 is the cross-sectional structure schematic diagram of the utility model the 3rd embodiment;
Fig. 5 is the cross-sectional structure schematic diagram of the utility model the 4th embodiment.
Reference numeral
1 crystallizer narrow copper plate
The plane domain of 2 narrow copper plate working faces
The curved surface area of 3 narrow copper plate working faces
The curve of 4 curved surface areas on cross section
The chamfered region on 5 copper coin tops
6 tubular type cooling water channels
7 rectangle cooling water channels
α; The curve of curved surface area on cross-sectional direction and the angle of side formation
First water channel of W limit portion is apart from the minimum range of copper coin side
Spacing between the D water channel
S water channel root is apart from the minimum range of copper plate working surface
The specific embodiment
The utility model is described in further detail with reference to the accompanying drawings below.
The narrow copper plate 1 that the utility model proposes is mainly used in the continuous casting production that thickness is 120～480mm strand, and conticaster is a straight arc or upright curved, and crystallizer is vertical structure on short transverse.This narrow copper plate 1 can be the plate slab crystallizer of (120～480) mm * (1000～2150) mm strand to form the production section by combination, the structure of wide copper coin of plate slab crystallizer is same as the prior art, also can be in order to by being combined to form bloom or the rectangular bloom crystallizer that the length of side is 200～480mm, this narrow copper plate 1 working face is a kind of in single tapering, double tapered or the many taperings.
Accompanying drawing 2 has provided the narrow copper plate of another embodiment, shown in the narrow copper plate working face be the vertical structure of single tapering, promptly it is rectangular on vertical longitudinal section.
Accompanying drawing 3～5 has provided the cooling structure of narrow copper plate 1 inside and the chamfering α of side.The principle that this narrow copper plate 1 internal water channel is arranged is to guarantee the uniformity of conducting heat between base shell and the copper wall, will guarantee that especially the strand bight has enough coolings.The narrow copper plate chamfer dimesion is 10-100mm, curve and the side angle α that form of curved surface area on cross-sectional direction is controlled at 15 °～60 °, correspondingly the bight of strand increases to 120 °～165 ° by original 90 ° of right angles, can weaken like this and conduct heat and raising strand corner portion temperature, and the tension of eliminating strand bight in the bending straightening process is easily concentrated, and reaches the purpose of pilot angle transverse fissure.
Except the chamfering place adopted tubular type cooling water channel 6, all the other plane domains 2 of narrow copper plate 1 can adopt tubular type cooling water channel 6 to cool off, and also can adopt rectangle cooling water channel 7 to cool off.
Figure 3 shows that the cross-sectional structure schematic diagram of the narrow copper plate that has plane domain and curved surface area, copper coin inside has the equally distributed tubular type cooling water channel that connects on the short transverse, Fig. 4 is for only having the cross-sectional structure schematic diagram of the narrow copper plate of curved surface area, copper coin inside has the equally distributed tubular type cooling water channel that connects on the short transverse, Fig. 5 is the cross-sectional structure schematic diagram that has the narrow copper plate of plane domain and curved surface area, the copper coin inside of limit portion curved surface area correspondence has the equally distributed tubular type cooling water channel that connects on the short transverse, and plane domain copper coin inside, middle part has the equally distributed rectangle cooling water channel that connects on the short transverse.
Claims (8)
1. crystallizer narrow copper plate with curved-surface structure, comprise plane domain (2) and curved surface area (3), it is characterized in that: copper coin inside is evenly distributed with tubular type and/or rectangle cooling water channel, the plane domain of copper coin (2) is positioned at the middle part, copper coin corner portion thickness maximum, than the big 10～100mm of copper plate thickness of middle part plane domain (2), curved surface area (3) is connected so that tangent mode is smooth on cross-sectional direction with plane domain (2).
2. narrow copper plate as claimed in claim 1 is characterized in that: the curve (4) of described curved surface area on cross-sectional direction is following a kind of in several:
I) combine by 1 broken line and 1 camber line;
II) form by 1 or 2 camber line,
Wherein, described camber line is a kind of in circular arc line, hyperbola or the parabola.
3. narrow copper plate as claimed in claim 1 (1) is characterized in that: the overall width of described copper coin is 120～480mm, and the width of plane domain (2) is 0～95% of a copper coin overall width, and the working face of narrow copper plate (1) can all be a curved-surface structure.
4. narrow copper plate as claimed in claim 1 (1) is characterized in that: described copper coin is a line of symmetry with the centre of surface line on width, is symmetrical distribution.
5. narrow copper plate as claimed in claim 1 (1) is characterized in that: described copper coin is on short transverse, and its working face is a kind of in single tapering, double tapered or the many taperings.
6. narrow copper plate as claimed in claim 1 (1) is characterized in that: the curve (4) of described copper coin curved surface area on cross section is 15 °～60 ° with the angle α that side forms.
7. as the described narrow copper plate of arbitrary claim 1～6 (1), it is characterized in that: inner tubular type cooling water channel (6) and/or the rectangle cooling water channel (7) that connects on the equally distributed short transverse that adopt of described copper coin, wherein limit, the side portion curved surface area of narrow copper plate is tubular type cooling water channel (6), central region is tubular type cooling water channel (6) or rectangle cooling water channel (7), first water channel of limit portion is 8～10mm apart from the minor distance of W of copper coin side, space D between the adjacent water channel is 15～25mm, the root of whole water channels of arranging in the copper coin is consistent apart from S apart from working face, is 12～35mm.
8. as the described narrow copper plate of arbitrary claim 7 (1), it is characterized in that: described copper coin has one of following feature at least:
I) on plane domain (2) working face and curved surface area (3) working face nickel coating, ferronickel coating or nickel cobalt coating are arranged;
II) material of whole copper coin is a kind of in silver-bearing copper, chromium zirconium copper, phosphor-copper, the beryllium copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205869415U CN201871696U (en) | 2010-10-27 | 2010-10-27 | Narrow face copper plate of crystallizer with curved structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205869415U CN201871696U (en) | 2010-10-27 | 2010-10-27 | Narrow face copper plate of crystallizer with curved structure |
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| Publication Number | Publication Date |
|---|---|
| CN201871696U true CN201871696U (en) | 2011-06-22 |
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| CN2010205869415U Expired - Lifetime CN201871696U (en) | 2010-10-27 | 2010-10-27 | Narrow face copper plate of crystallizer with curved structure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102274934A (en) * | 2011-08-15 | 2011-12-14 | 钢铁研究总院 | Narrow copper plate with funnel-shaped curved surface and chamfered crystallizer |
| CN102328037A (en) * | 2011-09-21 | 2012-01-25 | 首钢总公司 | Chamfered crystallizer with taper continuous casting plate blank |
| CN102642000A (en) * | 2012-05-08 | 2012-08-22 | 首钢总公司 | Slab continuous casting chamfer crystallizer narrow-face copper plate capable of effectively controlling longitudinal cracks of corners |
| CN103317107A (en) * | 2013-06-27 | 2013-09-25 | 钢铁研究总院 | Method for producing octagonal continuous casting blank |
| US8776862B2 (en) | 2011-05-03 | 2014-07-15 | Central Iron And Steel Research Institute | Chamfered narrow side copper plate for mould with funnel-shaped curved surface |
| CN104209484A (en) * | 2014-09-15 | 2014-12-17 | 首钢总公司 | Narrow-face copper plate for chamfer crystallizer |
| DE202015005350U1 (en) | 2014-08-18 | 2015-08-12 | Central Iron And Steel Research Institute | Narrow-sided copper plate for mold for controlling the depression of the chamfer of a chamfered slab |
| CN104874754A (en) * | 2015-06-19 | 2015-09-02 | 东北大学 | Slab narrow-face inwards-convex curved-surface crystallizer and design method thereof |
| CN105057613A (en) * | 2015-09-15 | 2015-11-18 | 西峡龙成特种材料有限公司 | Chamfered crystallizer narrow-face copper plate for slab continuous casting |
| CN105195692A (en) * | 2015-10-23 | 2015-12-30 | 河南行知专利服务有限公司 | Chamfered crystallizer narrow-surface copper plate |
| CN106536085A (en) * | 2014-07-24 | 2017-03-22 | 杰富意钢铁株式会社 | Method for continuous casting of steel |
| CN108356240A (en) * | 2018-04-13 | 2018-08-03 | 东北大学 | A kind of corner efficient heat transfer sheet billet leptoprosopy curved surface crystallizer and its design method |
| CN108356242A (en) * | 2018-04-13 | 2018-08-03 | 东北大学 | A kind of micro alloyed steel sheet billet Corner Crackss control equipment and technique |
| CN108405818A (en) * | 2018-04-13 | 2018-08-17 | 东北大学 | A kind of equipment and technique improving micro alloyed steel sheet billet corner tissue plasticity |
-
2010
- 2010-10-27 CN CN2010205869415U patent/CN201871696U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9089894B2 (en) | 2011-05-03 | 2015-07-28 | Central Iron And Steel Research Institute | Chamfered narrow side copper plate for mould with funnel-shaped curved surface |
| US8776862B2 (en) | 2011-05-03 | 2014-07-15 | Central Iron And Steel Research Institute | Chamfered narrow side copper plate for mould with funnel-shaped curved surface |
| CN102274934B (en) * | 2011-08-15 | 2013-04-24 | 钢铁研究总院 | Narrow copper plate with funnel-shaped curved surface and chamfered crystallizer |
| CN102274934A (en) * | 2011-08-15 | 2011-12-14 | 钢铁研究总院 | Narrow copper plate with funnel-shaped curved surface and chamfered crystallizer |
| CN102328037A (en) * | 2011-09-21 | 2012-01-25 | 首钢总公司 | Chamfered crystallizer with taper continuous casting plate blank |
| CN102642000A (en) * | 2012-05-08 | 2012-08-22 | 首钢总公司 | Slab continuous casting chamfer crystallizer narrow-face copper plate capable of effectively controlling longitudinal cracks of corners |
| CN103317107A (en) * | 2013-06-27 | 2013-09-25 | 钢铁研究总院 | Method for producing octagonal continuous casting blank |
| CN106536085A (en) * | 2014-07-24 | 2017-03-22 | 杰富意钢铁株式会社 | Method for continuous casting of steel |
| CN106536085B (en) * | 2014-07-24 | 2019-04-19 | 杰富意钢铁株式会社 | The continuous casing of steel |
| DE202015005350U1 (en) | 2014-08-18 | 2015-08-12 | Central Iron And Steel Research Institute | Narrow-sided copper plate for mold for controlling the depression of the chamfer of a chamfered slab |
| CN104209484A (en) * | 2014-09-15 | 2014-12-17 | 首钢总公司 | Narrow-face copper plate for chamfer crystallizer |
| CN104874754A (en) * | 2015-06-19 | 2015-09-02 | 东北大学 | Slab narrow-face inwards-convex curved-surface crystallizer and design method thereof |
| CN105057613A (en) * | 2015-09-15 | 2015-11-18 | 西峡龙成特种材料有限公司 | Chamfered crystallizer narrow-face copper plate for slab continuous casting |
| CN105057613B (en) * | 2015-09-15 | 2018-07-06 | 西峡龙成特种材料有限公司 | A kind of sheet billet continuous casting chamber crystallizer narrow-surface copper |
| CN105195692A (en) * | 2015-10-23 | 2015-12-30 | 河南行知专利服务有限公司 | Chamfered crystallizer narrow-surface copper plate |
| CN108356240A (en) * | 2018-04-13 | 2018-08-03 | 东北大学 | A kind of corner efficient heat transfer sheet billet leptoprosopy curved surface crystallizer and its design method |
| CN108356242A (en) * | 2018-04-13 | 2018-08-03 | 东北大学 | A kind of micro alloyed steel sheet billet Corner Crackss control equipment and technique |
| CN108405818A (en) * | 2018-04-13 | 2018-08-17 | 东北大学 | A kind of equipment and technique improving micro alloyed steel sheet billet corner tissue plasticity |
| CN108405818B (en) * | 2018-04-13 | 2020-01-14 | 东北大学 | Device and process for improving corner structure plasticity of microalloyed steel sheet billet |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |