CN1689729A - Low-stress sheet metal blank crystallizer - Google Patents
Low-stress sheet metal blank crystallizer Download PDFInfo
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- CN1689729A CN1689729A CN 200410010231 CN200410010231A CN1689729A CN 1689729 A CN1689729 A CN 1689729A CN 200410010231 CN200410010231 CN 200410010231 CN 200410010231 A CN200410010231 A CN 200410010231A CN 1689729 A CN1689729 A CN 1689729A
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- crystallizer
- wide
- copper plates
- sheet metal
- working face
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Abstract
The low pressure metal sheet blank crystallizer consists of two opposite wide water cooled copper plates and two narrow copper plates defining the width of the sheet blank. The wide copper plates have top sprue in continuous curve shape and form cavity with arced work surface and large smooth work chamber. The wide copper plates are provided with circulating water cooling channels in the outer surfaces and have homogeneous cooling and high heat conducting of the crystallizer for continuous operation. Using the crystallizer can eliminate concentrated stress in the steel blank knee point, avoid crack, and reach high production efficiency, high product quality and long service life of the crystallizer.
Description
Technical field:
The invention belongs to casting technology field, is a kind of low stress sheet metal billet crystallizer for sheet-metal blank continuous casting use.
Background technology:
In technique known, used straight-curved mould is to be converted into vertically wide outside expansion by reasonable curved surface, the big space that made being inserted with of the intrusive mood mouth of a river, and created condition for distortion rationally in all even throwing of heat conduction.But, then cause different cold and hot surface product moments because wide the difference in thickness with leptoprosopy is too big; And between straight line and the arc flex point is arranged, and will cause the base shell inequality of being heated, the excessive throwing stress that caused of distortion of corner part makes the base shell phenomenon occur tearing, thereby cracks simultaneously, and sheet metal is vertically interrupted easily.Like this, not only significantly reduce the service life of crystallizer, and had a strong impact on production and product quality again.
The purpose of this invention is to provide a kind of low stress sheet metal billet crystallizer that reduces throwing stress, avoids the slab crackle.
Summary of the invention:
Realize that the technical scheme that purpose of the present invention is taked is: this crystallizer is made up of the narrow copper plate of wide copper coin of two water-cooleds respect to one another and two ends decision width of plate slab, wide copper coin top casting gate is the full curve shape, the inner surface of its molding cavity is the outside curved working face of broadening gradually from bottom to top, formed and had smooth surface and bigger casting chamber, junction at wide copper coin and narrow copper plate is provided with the casting knuckle, the outer surface of wide copper coin is provided with recirculated water cooling groove, the bottom land of cooling bath is arranged to the profiling cambered surface identical with the inner chamber curved working face, its cross section each point equates with inner chamber curved working face distance, even with the cooling of guaranteeing crystallizer, and make the heat-conductive characteristic of crystallizer good, can work continuously.
The low stress sheet metal billet crystallizer of making according to such scheme, can be in the sheet-metal blank continuous casting, effectively solve steel billet flex point problem of stress concentration, because this crystallizer is heated evenly, stress disperses, and makes the deformation drag of solidifying steel billet littler, not only can solve the vertical disruption of strand effectively, and can avoid sheet-metal blank to crack, enhance productivity, guarantee product quality, increase the crystallizer purpose in service life thereby reach.
Utilize accompanying drawing to further describe embodiments of the invention below.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A profile of Fig. 1.
The specific embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3, low stress sheet metal billet crystallizer of the present invention, narrow copper plate 2 by wide copper coin 1 of two water-cooleds respect to one another and two ends decision width of plate slab is formed, the top casting gate of wide copper coin 1 is the full curve shape, full curve in this case is to adopt the computing formula of following " second order differentiate " to draw each point, and the full curve that forms, its formula is:
X＝-475～475
Y＝0～900
Z＝(K
5Y
5-K
6Y
4+K
7Y
3)*(K
4-K
9)*(K
1X
6-K
2X
4+K
3X
2-K
8)
K wherein
1～K
9Be constant
Calculate the point that is obtained by above-mentioned equation and form the curve of casting gate continuously, and constitute continuous casting curved surface thus.
Junction at wide copper coin 1 and narrow copper plate 2 is provided with the casting knuckle, the inner surface of its molding cavity is the outside curved working face 1-2 of broadening gradually from bottom to top, formed and had smooth surface and bigger casting chamber, because casting area whole wide face in crystallizer top is smooth curved surface, therefore, avoided slab in motion deformation and contraction process, to produce local stress concentration.Like this, in process of production, can guarantee that any point in crystallizer place suitable for reading moves to exit corresponding points track and is straight line, (being that the strand infinitesimal is a linear running along the throwing direction), complex bend stress and compression have been avoided, and do not have excessive turbulent flow or wash away sidewall when making the molten metal discharging, make it to have bigger flow and higher output.Casting blank shell alternating thermal stress and mechanical stress have also been strengthened simultaneously.Outer surface at wide copper coin 1 is provided with recirculated water cooling groove 3, the bottom land of cooling bath 3 is arranged to the profiling cambered surface 3-1 identical with the inner chamber curved working face, its cross section each point equates with inner chamber curved working face distance, even with the cooling of guaranteeing crystallizer, make the crystallizer heat-conductive characteristic good, can work continuously.Because this crystallizer is heated evenly, stress disperses, and can make the deformation drag of solidifying steel billet littler, thereby solve the vertical disruption of strand effectively.
Claims (2)
1, a kind of low stress sheet metal billet crystallizer, narrow copper plate [2] by wide copper coins of two water-cooleds respect to one another [1] and two ends decision width of plate slab is formed, it is characterized in that: the top casting gate of wide copper coin [1] is the full curve shape, the inner surface of its molding cavity is the outside curved working face [1-2] of broadening gradually from bottom to top, junction at wide copper coin [1] and narrow copper plate [2] is provided with the casting knuckle, and the outer surface of wide copper coin [1] is provided with recirculated water cooling groove [3].
2, low stress sheet metal billet crystallizer according to claim 1.It is characterized in that: the bottom land of cooling bath [3] is arranged to the profiling cambered surface [3-1] identical with the inner chamber curved working face, and its cross section each point equates with inner chamber curved working face distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010231 CN1689729A (en) | 2004-04-24 | 2004-04-24 | Low-stress sheet metal blank crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010231 CN1689729A (en) | 2004-04-24 | 2004-04-24 | Low-stress sheet metal blank crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1689729A true CN1689729A (en) | 2005-11-02 |
Family
ID=35345656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410010231 Pending CN1689729A (en) | 2004-04-24 | 2004-04-24 | Low-stress sheet metal blank crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1689729A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012019515A1 (en) * | 2010-08-09 | 2012-02-16 | 河北文丰钢铁有限公司 | Rectangular billet casting mold |
| CN103264147A (en) * | 2013-06-13 | 2013-08-28 | 钢铁研究总院 | Method for inhibiting surface longitudinal cracks of continuous casting sheet billet and crystallizer |
-
2004
- 2004-04-24 CN CN 200410010231 patent/CN1689729A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012019515A1 (en) * | 2010-08-09 | 2012-02-16 | 河北文丰钢铁有限公司 | Rectangular billet casting mold |
| CN103264147A (en) * | 2013-06-13 | 2013-08-28 | 钢铁研究总院 | Method for inhibiting surface longitudinal cracks of continuous casting sheet billet and crystallizer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |