CN201677013U - Continuous slab casting mold - Google Patents
Continuous slab casting mold Download PDFInfo
- Publication number
- CN201677013U CN201677013U CN201020201234XU CN201020201234U CN201677013U CN 201677013 U CN201677013 U CN 201677013U CN 201020201234X U CN201020201234X U CN 201020201234XU CN 201020201234 U CN201020201234 U CN 201020201234U CN 201677013 U CN201677013 U CN 201677013U
- Authority
- CN
- China
- Prior art keywords
- copper plates
- narrow copper
- narrow
- plate
- continuous casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model relates to a continuous slab casting mold, which belongs to the field of the metallurgic continuous steel casting equipment. The continuous slab casting mold is formed by assembling two opposite wide copper plates (6) and two opposite narrow copper plates (1). The continuous slab casting mold is characterized in that the transition from the inner surfaces of the narrow copper plates (1) to the inner surfaces of the wide copper plates (6) adopts a circular curve surface (3), the two ends of the narrow copper plates (1) are respectively provided with a platform (4), the platforms (4) of the narrow copper plates and the wide copper plates (6) form 90-degree included angles, the radius of chamfers in the connection positions of the circular curve surface (3) and the planes (2) and the platforms (4) of the narrow copper plates is 2-6mm, and the included angle alpha between the axial line of a cooling water seam (5) on the back face of the circular curve surface (3) and horizontal plane is 50-80 degrees. The utility model can reduce horizontal cracks on the corners of the surface of the continuously cast slab, cracks on the edge of the hot-rolled steel plate and vertical 'black lines' on the hot rolled coil, thereby improving the yield of steel plates.
Description
Technical field
The utility model relates to a kind of continuous casting crystallizer for plate billet, belongs to metallurgy industry continuous casting equipment field.
Background technology
At present employed crystallizer is to fit together institute by two wide copper coins respect to one another and two narrow copper plates respect to one another to constitute in the sheet billet continuous casting process, and the angle of wide copper coin and narrow copper plate is the right angle.The bight was owing to be Two-Dimensional Heat when molten steel solidified in this crystallizer, so morning, often and form air gap between copper plate of crystallizer is solidified soon, shrinks at this position, caused the bight solidified shell thinner, was easy to generate crack defect.Main is that this right angle continuous casting steel billet owing to corner portion cooling velocity causes the continuous casting billet surface solidification inhomogeneous soon, is easy to occur the transverse corner crack line in two cold-zones.Such continuous casting billet has to carry out the corner cut processing, in order to avoid crack defective in follow-up rolling steel plate limit portion, the corner cut of continuous casting billet is handled has then increased production cost widely, reduced production efficiency.In addition, the corner angle of right angle continuous casting steel billet cause longitudinally " black line " defective easily on hot-rolled sheet coil, cause the increase of production cost.
The plate slab crystallizer that it is fillet surface that Chinese patent 200720089029.7 discloses four angles of a kind of rectangular inner cavity cross section, the arc radius of the described fillet surface of this patent is 4-150mm, this curved surface and wide copper coin contact-making surface chamfer radius are 2-10mm.There are the hidden danger that causes the bleed-out accident in the casting process in this design narrow copper plate and wide copper coin contact portion angle less than 90 °, and do not optimize accordingly at chamfer site copper plate thickness increase back part water seam.
The plate slab crystallizer that it is the arc transition face that Chinese patent 200720175143.1 discloses four angles of a kind of rectangular inner cavity cross section, the described arc transition face of this patent two ends are tangent with narrow copper plate with wide respectively.There is the defective of narrow copper plate two ends easy deformation in this design, and does not optimize accordingly at chamfer site copper plate thickness increase back part water seam.
Chinese patent 200720067413.7 discloses a kind of plate slab crystallizer, and the described narrow copper plate indent of this patent is circular arc.This design does not have the size of clear and definite key position, has the defective of narrow copper plate two ends easy deformation, and does not optimize accordingly at chamfer site copper plate thickness increase back part water seam.
Chinese patent 200520089594.4 discloses the plate slab crystallizer of band convex edge, four angles of a kind of rectangular inner cavity cross section, and convex edge and wide and narrow copper plate angle are 45 °, and the convex edge length of straight flange is 1-15mm.This design chamfer site size is less than normal, and is limited to improving continuous casting billet transverse corner crack line effect, and do not optimize accordingly at chamfer site copper plate thickness increase back part water seam.
The plate slab crystallizer that it is the arc transition face that Chinese patent 200920035404.9 discloses four angles of a kind of rectangular inner cavity cross section, the described arc transition face of this patent two ends respectively with wide and narrow copper plate rounding off.Thereby this design exists narrow copper plate two ends easy deformation to cause taking place in the casting process defective of bleed-out accident.
Design of present plate slab crystallizer and the present situation of using: at present the cross section that generally adopts be rectangle, bight be the crystallizer at right angle can't avoid continuous casting steel billet particularly in carbon niobium-containing steel continuous casting steel billet transverse corner crack, depart from the problems such as transverse crack in bight.And for the plate slab crystallizer that has used band fillet surface or inner concave shape narrow copper plate or band convex edge, owing to all do not take into full account the heat transfer problem at narrow copper plate two ends during design, and fillet surface or convex edge spot size are less than normal, cause practical application effect bad, continuous casting billet corner crack defective is not controlled effectively.
Summary of the invention
The utility model purpose provides a kind of continuous casting crystallizer for plate billet that can effectively avoid continuous casting steel billet corner crack defective.The crack defect of continuous casting billet Surface Edge angular position can be hereditary on the steel plate after the hot rolling, and the defective that is caused thus on the steel plate mainly is positioned at corner portion, causes breaking of steel plate limit portion sometimes.
For achieving the above object, the technical solution adopted in the utility model is as follows.
A kind of continuous casting crystallizer for plate billet, fit together by two wide relatively relative narrow copper plates of copper coin and to constitute with two, wherein the narrow copper plate inner surface is a circular arc camber to the transition of wide copper coin inner surface, the narrow copper plate two ends have platform, narrow copper plate end face platform and wide copper coin angle are 90 °, circular arc camber and narrow copper plate plane, platform intersection chamfer radius 2-6mm, the back side cooling water of circular arc camber stitches axially and horizontal plane angle α is 50-80 °.
Narrow copper plate two ends berm width is 2-5mm.The arc radius of circular arc camber is 40-200mm, the corresponding chord length 25-50mm of circular arc.The water seam degree of depth is 25-45mm, water seam width 4-10mm.
The utlity model has following advantage:
(1) surface blending between wide copper coin of crystallizer and narrow copper plate, make crystallizer interior base shell bight cooling become approximate one dimension cooling by the two dimension cooling, shell thickness is more even around the crystallizer cross section like this, also smaller in the continuous casting billet bight, two cold-zones and the center temperature difference, thus continuous casting billet transverse corner crack line defective avoided.
(2) narrow copper plate two ends berm width is set at 2-5mm, both can guarantee that superheating phenomenon does not appear in the narrow copper plate end, thereby guarantees the chamfer site continuous casting billet quality, can guarantee the safety in utilization of crystallizer again, avoids the end perk and the bleed-out accident occurs.
(3) design of leptoprosopy arc transition curved surface back side cooling water seam can increase the intensity of cooling of this position base shell, has compensated the increase of this position copper plate thickness, and it is even to avoid this position base shell high temperature dot and leptoprosopy and wide inhomogeneous cooling to occur.
(4) bight, continuous casting billet surface transverse crack alleviates, and hot-rolled steel edges of boards portion's crack defect and hot-rolled sheet coil vertically " black line " defective reduce, and yield of steel plate is improved.
Description of drawings
Fig. 1 is the leptoprosopy copper plate of crystallizer;
Fig. 2 is wide, leptoprosopy copper plate of crystallizer assembling bight, back vertical view
Among the figure: 1 is the leptoprosopy copper plate of crystallizer, and 2 is the narrow copper plate planar section, and 3 is the narrow copper plate circular arc camber, and 4 is the narrow copper plate cuddy board, and 5 is narrow copper plate circular arc camber back side water seam, and 6 is wide copper coin.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is described in detail.
Certain steel mill carbon in conticaster is cast 250mm * 2000mm has used the utility model crystallizer when containing Nb steel continuous casting steel billet, the angle of crystallizer narrow copper plate 1 two ends and wide copper coin 6 formation is 90 °, platform 4 width in two ends are 3mm, the arc radius of circular arc camber 3 is 180mm between wide and leptoprosopy, the corresponding chord length 40mm of circular arc, circular arc camber 3 is 2mm with narrow copper plate plane 2, platform 4 intersection chamfer radius, leptoprosopy circular arc camber 3 back side water seams 5 axially become 80 ° of angles with horizontal plane, it is 32mm that water stitches 5 degree of depth, and water stitches 5 width 4mm.The continuous casting billet corner crack ratio of defects of casting is reduced to below 1.5%, and rolling 20-60mm surface of steel plate does not have the limit to split defective.
Certain steel mill has used the utility model crystallizer when conticaster is cast 320mm * 2400mm medium carbon low alloy steel continuous casting steel billet, the angle of crystallizer narrow copper plate 1 two ends and wide copper coin 6 formation is 90 °, platform 4 width in two ends are 2mm, the arc radius of transition arc curved surface 3 is 200mm between wide and leptoprosopy, 3 corresponding chord length 45mm of circular arc camber, circular arc camber 3 is 3mm with narrow copper plate plane 2, platform 4 intersection chamfer radius, leptoprosopy circular arc camber 3 back side water seams 5 axially become 75 ° of angles with horizontal plane, it is 36mm that water stitches 5 degree of depth, and water stitches 5 width 4mm.The continuous casting billet bight of casting does not have crackle, and institute rolling 40-80mm steel plate surface does not have the limit to split defective.
Certain steel mill has used the utility model crystallizer when conticaster is cast 230mm * 1600mm pipe line steel continuous casting steel billet, the angle of crystallizer narrow copper plate 1 two ends and wide copper coin 6 formation is 90 °, platform 4 width in two ends are 2mm, the arc radius of circular arc camber 3 is 160mm between wide and leptoprosopy, the corresponding chord length 30mm of circular arc, circular arc camber 3 is 3mm with narrow copper plate plane 2, platform 4 intersection chamfer radius, leptoprosopy circular arc camber 3 back side water seams 5 axially become 75 ° of angles with horizontal plane, it is 30mm that water stitches 5 degree of depth, and water stitches 5 width 4mm.The continuous casting billet bight of casting does not have crack defect, and rolling 12-18mm surface of steel plate limit portion of institute vertically " black line " defective is effectively removed.
Claims (4)
1. continuous casting crystallizer for plate billet, fit together formation by the relative narrow copper plates of two wide relatively copper coins (6) (1) with two, it is characterized in that: narrow copper plate (1) inner surface is circular arc camber (3) to the transition of wide copper coin (6) inner surface, narrow copper plate (1) two ends have platform (4), narrow copper plate end face platform (4) is 90 ° with wide copper coin (6) angle, circular arc camber (3) and narrow copper plate plane (2), platform (4) intersection chamfer radius 2-6mm, the back side cooling water seam (5) of circular arc camber (3) axially and horizontal plane angle α between 50-80 °.
2. according to the described continuous casting crystallizer for plate billet of claim 1, it is characterized in that: narrow copper plate two ends platforms (4) width is 2-5mm.
3. according to the described continuous casting crystallizer for plate billet of claim 1, it is characterized in that: the arc radius of circular arc camber (3) is 40-200mm, the corresponding chord length 25-50mm of circular arc.
4. according to claim 1 and 3 described continuous casting crystallizer for plate billet, it is characterized in that: water seam (5) degree of depth is 25-45mm, water seam (5) width 4-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020201234XU CN201677013U (en) | 2010-05-19 | 2010-05-19 | Continuous slab casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020201234XU CN201677013U (en) | 2010-05-19 | 2010-05-19 | Continuous slab casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201677013U true CN201677013U (en) | 2010-12-22 |
Family
ID=43342073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020201234XU Ceased CN201677013U (en) | 2010-05-19 | 2010-05-19 | Continuous slab casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201677013U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328037A (en) * | 2011-09-21 | 2012-01-25 | 首钢总公司 | Chamfered crystallizer with taper continuous casting plate blank |
| CN102909331A (en) * | 2012-10-16 | 2013-02-06 | 首钢总公司 | Dummy bar head special for chamfered mold for continuous casting slabs |
| CN104209484A (en) * | 2014-09-15 | 2014-12-17 | 首钢总公司 | Narrow-face copper plate for chamfer crystallizer |
| CN104741560A (en) * | 2015-04-03 | 2015-07-01 | 首钢总公司 | Method of reducing cross cracks at niobium-containing steel angle part |
| CN106536085A (en) * | 2014-07-24 | 2017-03-22 | 杰富意钢铁株式会社 | Method for continuous casting of steel |
| CN106925733A (en) * | 2017-04-28 | 2017-07-07 | 华南理工大学 | A kind of axial direction amorphous crystallizer copper sleeve cooling structure heterogeneous |
-
2010
- 2010-05-19 CN CN201020201234XU patent/CN201677013U/en not_active Ceased
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328037A (en) * | 2011-09-21 | 2012-01-25 | 首钢总公司 | Chamfered crystallizer with taper continuous casting plate blank |
| CN102909331A (en) * | 2012-10-16 | 2013-02-06 | 首钢总公司 | Dummy bar head special for chamfered mold for continuous casting slabs |
| CN102909331B (en) * | 2012-10-16 | 2014-07-23 | 首钢总公司 | Dummy bar head special for chamfered mold for continuous casting slabs |
| 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 |
| CN104209484A (en) * | 2014-09-15 | 2014-12-17 | 首钢总公司 | Narrow-face copper plate for chamfer crystallizer |
| CN104741560A (en) * | 2015-04-03 | 2015-07-01 | 首钢总公司 | Method of reducing cross cracks at niobium-containing steel angle part |
| CN106925733A (en) * | 2017-04-28 | 2017-07-07 | 华南理工大学 | A kind of axial direction amorphous crystallizer copper sleeve cooling structure heterogeneous |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201677013U (en) | Continuous slab casting mold | |
| CN102328037A (en) | Chamfered crystallizer with taper continuous casting plate blank | |
| CN102642000A (en) | Slab continuous casting chamfer crystallizer narrow-face copper plate capable of effectively controlling longitudinal cracks of corners | |
| US9089894B2 (en) | Chamfered narrow side copper plate for mould with funnel-shaped curved surface | |
| CN102274934B (en) | Narrow copper plate with funnel-shaped curved surface and chamfered crystallizer | |
| CN102728795A (en) | Combined plate blank continuous casting chamfering crystallizer narrow-surface copper plate | |
| CN103831412B (en) | Production method for controlling straight crack defect of surface edge of medium-thick plate | |
| KR20140005374A (en) | Pre-control method of head and tail shapes of continuous casting slab for reducing the removed amount from the head and tail of hot-rolled intermediate slab | |
| KR20110113195A (en) | Hot-rolled titanium slab melted by electronbeam melting furnace, method of melting and method of hot-rolling titan slab | |
| CN106735031B (en) | A kind of hot width adjusting method of continuous cast mold | |
| CN103464708A (en) | Secondary cooling nozzle arranging method for silicon steel slab continuous casting | |
| CN104209484A (en) | Narrow-face copper plate for chamfer crystallizer | |
| CN201380275Y (en) | Plate blank continuous casting crystallizer | |
| CN202239532U (en) | Cooling and fixing device for narrow-edge copper plate of crystallizer with chamfer angle | |
| CN204108259U (en) | A kind of multidimensional fillet surface narrow face copper plate of crystallizer | |
| CN201132207Y (en) | Slab crystallizer | |
| CN202199741U (en) | Novel foot roller for supporting continuously cast bloom with chamfer | |
| CN112846116A (en) | Crystallizer for reducing black lines on edge of steel plate and using method | |
| CN105312842A (en) | Manufacturing method of super-thick steel plate with excellent Z-direction performance | |
| CN201913217U (en) | Supporting foot roller suitable for continuous casting billet equipped with chamfer | |
| CN112077252A (en) | Forging die for near-net-shape titanium strip plate blank and free forging processing method | |
| CN204685980U (en) | One laterally with longitudinally becomes convexity continuous casting crystallizer copper plate | |
| CN102909331B (en) | Dummy bar head special for chamfered mold for continuous casting slabs | |
| CN101733619A (en) | Production technology of large round steel | |
| CN214349470U (en) | Crystallizer for reducing black lines on edge of steel plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20131210 Decision number of declaring invalidation: 21716 Granted publication date: 20101222 |