CN104209484A - Narrow-face copper plate for chamfer crystallizer - Google Patents
Narrow-face copper plate for chamfer crystallizer Download PDFInfo
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- CN104209484A CN104209484A CN201410469991.8A CN201410469991A CN104209484A CN 104209484 A CN104209484 A CN 104209484A CN 201410469991 A CN201410469991 A CN 201410469991A CN 104209484 A CN104209484 A CN 104209484A
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Abstract
The invention discloses a narrow-face copper plate for a chamfer crystallizer. A working face of the narrow-face copper plate for the chamfer crystallizer comprises a first part and a second part; the first part is a sunken curved surface; the first part is a part on the working face in a range of 200mm to 400mm apart from an upper port of the crystallizer. The first part comprises a first curved surface region, two second curved surface regions and two transition curved surface regions, wherein the first curved surface region is a second degree parabola region; the two second curved surface regions are curved surfaces of which the crown heights are 1mm to 3mm; the two transition curved surface regions are curved surfaces with radii of 5mm to 35mm; the two transition curved surface regions are respectively connected with two opposite sides of the first curved surface region and the two second curved surface regions. The second part is connected with the first curved surface region, the two second curved surface regions and the two transition curved surface regions; the second part is a linear conical surface. The narrow-face copper plate for the chamfer crystallizer is also provided with a cooling waterway for cooling the working face; the distance between the cooling waterway and the edge, which is far away from the transition curved surface regions, on each second curved surface region is 20mm to 40mm; the distance between the cooling waterway and each transition curved surface region is 10mm to 30mm.
Description
Technical field
The present invention relates to the parts on the crystallizer in metallurgy industry continuous casting equipment field, relate in particular to a kind of chamber crystallizer narrow-surface copper.
Background technology
Along with the development of continuous casting technology, sheet billet continuous casting product line is continually developed the steel grade of high-quality, and the elements such as niobium, boron, vanadium that contain of casting progressively increase.Because slab bight is that 2 dimensions are conducted heat, solidify comparatively fast at this position, shrink larger, easily strand bight produce air gap, cause bight solidified structure bad, simultaneously owing to containing the elements such as niobium, boron, vanadium in molten steel, this dvielement has been widened steel grade the 3rd brittle zone, and at two cold bending section and straightening sections, strand bight temperature is easy to enter the brittle zone scope of this class steel grade, while containing the element steel grades such as niobium, boron, vanadium by the casting of right angle crystallizer, be easy to produce strand transverse corner crack line.In addition, the strand bight that right angle crystallizer is produced is very fast because 2 dimension heat transfer temperatures reduce, and causes strand broad ways non-uniform temperature, and strand broad ways temperature inequality causes the generation of the longitudinal black line of hot-rolled sheet coil, has reduced the lumber recovery of product.
In order to solve strand transverse corner crack line problem, metallargist except taking to adjust molten steel composition, control in molten steel the elements such as Alt, N, optimize secondary cooling zone process for cooling, an important technique measure of taking is exactly the crystallizer adopting with chamfering.
Chamfer crystallizer of the prior art adopts a kind of narrow copper plate with fillet surface, and curved surface is arc surface, and the radius of circular arc chamfering is 2～10mm, its chamfering quantity not sufficient 10mm, and bight is cooling realizes by copper coin self heat conduction.
Because the circular arc chamfering amount of the fillet surface of chamfer crystallizer of the prior art is little, thereby make strand bight temperature increase limited, fail fully to solve heat transfer problem, cause strand to produce many lobes, even there is steel leakage accident, cause the crystallizer practical application effect of chamfering poor.
Summary of the invention
The application provides a kind of chamber crystallizer narrow-surface copper, the circular arc chamfering amount due to fillet surface that solved in prior art is little, thereby make strand bight temperature increase limited, fail fully to solve heat transfer problem, cause strand to produce many lobes, even there is steel leakage accident, cause the poor technical problem of crystallizer practical application effect of chamfering.
The application provides a kind of chamber crystallizer narrow-surface copper, the working face of described chamber crystallizer narrow-surface copper comprises Part I and Part II, described Part I is the curved surface that is depression, and described Part I is the part in the scope of 200 millimeters～400 millimeters suitable for reading of distance crystallizer on working face.Described Part I comprises: first surface region is second-degree parabola region; Two the second curved surface areas, for crown height suitable for reading is the curved surface of 1 millimeter～3 millimeters; Two fillet surface regions, for radius is the curved surface of 5 millimeters～35 millimeters, described two fillet surface regions connect respectively relative both sides and described two second curved surface areas in described first surface region.Described Part II and described first surface region, two the second curved surface areas and two fillet surface joint areas, described Part II is the linear conical surface.On described chamber crystallizer narrow-surface copper, also offer the cooling water channel for cooling described working face, distance away from the edge in described fillet surface region on described cooling water channel and described the second curved surface area is 20 millimeters～40 millimeters, with the distance in described fillet surface region be 10 millimeters～30 millimeters.
Preferably, the second-degree parabola equation in described first surface region is y=ax
2+ b, described x is length of mould, described a is 5.5 × e
-6～3.5 × e
-5, described b is for comprising shrinkage factor strand size.
Preferably, described cooling water channel is that cross section is the water channel of triangle water distribution, and the distance away from the edge in described fillet surface region on described cooling water channel and described the second curved surface area is specially: on the outer side edges of the water channel of described triangle water distribution and described the second curved surface area away from the beeline at the edge in described fillet surface region.
Preferably, the inclination angle of the outer side edges of described triangle water channel is 60～90 degree.
Preferably, the extended line of the outer side edges of described triangle water channel is crossing away from the edge in described fillet surface region with on described the second curved surface area.
Preferably, described Part I is the part in the scope of 350 millimeters suitable for reading of distance crystallizer on described working face, and the crown height suitable for reading of described two the second curved surface areas is 1.5 millimeters～2.5 millimeters, and the second-degree parabola equation in described first surface region is y=ax
2+ 1613.4, described a is 5.0 × e
-6～3.5 × e
-5the radius in described two fillet surface regions is 10 millimeters, described cooling water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region on corresponding described the second curved surface area, and the inclination angle of the outer side edges of described cooling water channel is 70 degree～80 degree.
Preferably, described Part I is the part in the scope of 250 millimeters～300 millimeters suitable for reading of distance crystallizer on described working face, the crown height suitable for reading of described two the second curved surface areas is 1 millimeter～2 millimeters, the radius in described two fillet surface regions is 15 millimeters, described cooling water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region on corresponding the second curved surface area, and the inclination angle of the outer side edges of described cooling water channel is 70 degree～85 degree.
Preferably, described Part I is the part in the scope of 250 millimeters～350 millimeters suitable for reading of distance crystallizer on described working face, the crown height suitable for reading of described two the second curved surface areas is 1.5 millimeters～2.5 millimeters, the radius in described two fillet surface regions is 10 millimeters, described cooling water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region on corresponding the second curved surface area, and the inclination angle of the outer side edges of described cooling water channel is 65 degree～75 degree.
Preferably, described cooling water channel is that cross section is the cooling water channel of triangle water distribution, described cooling water channel is rectangle water channel, circular course, and run through the pass water channel of crystallizer leptoprosopy, and the number of described cooling water channel is multiple, described multiple cooling water channels can be rectangle water channel, circular course, and run through pass water channel or above two kinds or the two or more combinations of crystallizer leptoprosopy.
Preferably, on described working face, there are ferronickel coating or nickel cobalt coating.
The application's beneficial effect is as follows:
It is that two second curved surface areas of 1 millimeter～3 millimeters and radius are two fillet surface regions compositions of 5 millimeters～35 millimeters that above-mentioned chamber crystallizer narrow-surface copper is set to the first surface region of second-degree parabola, crown height suitable for reading by the part in the scope of 200 millimeters～400 millimeters suitable for reading of distance crystallizer on working face, thereby effectively make up the contraction of fillet surface, strengthen the uniformity of solidifying of fillet surface place base shell, in addition, distance away from the edge in described fillet surface region on cooling water channel and described the second curved surface area is set to 20 millimeters～40 millimeters, be set to 10 millimeters～30 millimeters with the distance in described fillet surface region, make that on described the second curved surface area, marginal portion and the described fillet surface region away from described fillet surface region can be by effectively cooling, thereby effectively control strand corner defect, the circular arc chamfering amount due to fillet surface that solved in prior art is little, thereby make strand bight temperature increase limited, fail fully to solve heat transfer problem, cause strand to produce many lobes, even there is steel leakage accident, cause the poor technical problem of crystallizer practical application effect of chamfering.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, the accompanying drawing in the following describes is only some embodiments of the present invention.
Fig. 1 is the top view of the application's one preferred embodiments chamber crystallizer narrow-surface copper;
Fig. 2 is that the K-K of chamber crystallizer narrow-surface copper in Fig. 1 is to generalized section;
Fig. 3 is that the J-J of chamber crystallizer narrow-surface copper in Fig. 1 is to generalized section.
Detailed description of the invention
In order better to understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.
Embodiment mono-
Fig. 1 is the top view of the application's one preferred embodiments chamber crystallizer narrow-surface copper.As shown in Figure 1, described chamber crystallizer narrow-surface copper 100 comprises working face 10, consults Fig. 2 and Fig. 3 simultaneously, and described working face 10 is for being the curved surface of depression, and described working face 10 comprises Part I 11 and Part II 12.Wherein, Part I 11 is the part in the scope of 200 millimeters～400 millimeters suitable for reading of distance crystallizer on working face 10, and described Part II 12 is the extraneous part of 200 millimeters～400 millimeters suitable for reading of distance crystallizer on working face 10.
Described Part I 11 comprises first surface region 111, two the second curved surface area 112, two fillet surface regions 113.
Described first surface region 111 is second-degree parabola region.Preferably, in the present embodiment, the second-degree parabola equation in described first surface region 111 is y=ax
2+ b, described x is length of mould, described a is 5.5 × e
-6～3.5 × e
-5, described b is for comprising shrinkage factor strand size.
Described two the second curved surface areas 112 are that crown height suitable for reading is the curved surface of 1 millimeter～3 millimeters.Described crown height suitable for reading is specially line between two end points on a camber line and the ultimate range between this camber line.
Described two fillet surface regions 113 for radius be the curved surface of 5 millimeters～35 millimeters, described two fillet surface regions 113 connect respectively relative both sides and described two second curved surface areas 112 in described first surface region 111.
Described Part II 12 is connected away from described crystallizer one end suitable for reading with on described Part I 11,, be connected with described first surface region 111, described two the second curved surface areas 112 and described two fillet surface regions 113, described Part II 112 is the linear conical surface.As described in Part I 11 while being the part in the scope of 300 millimeters suitable for reading of distance crystallizer on working face 10, described Part II 12 is the extraneous part of 300 millimeters suitable for reading of distance crystallizer on working face; Again, when part in described Part I 11 is the scope of 350 millimeters suitable for reading of distance crystallizer on working face 10, described Part II 12 is the extraneous part of 350 millimeters suitable for reading of distance crystallizer on working face.
On described chamber crystallizer narrow-surface copper 100, also offer the cooling water channel 20 for cooling described working face, distance away from the edge in described fillet surface region 113 on described cooling water channel 20 and described the second curved surface area 112 is 20 millimeters～40 millimeters, with the distance in described fillet surface region 113 be 10 millimeters～30 millimeters.
Particularly, described cooling water channel 20 can be the water channel 21 of triangle water distribution.Distance away from the edge in described fillet surface region 113 on described triangle water channel 21 and described the second curved surface area 112 is specially: on the outer side edges 211 of the water channel 21 of described triangle water distribution and described the second curved surface area 112 away from the beeline at the edge in described fillet surface region 113.Described outer side edges 211 is specially outermost limit on described triangle water channel 21.Particularly, the inclination angle a of the outer side edges 211 of described triangle water channel 21 is 60～90 degree.Further, in order to improve heat-conducting effect, make heat-conducting effect can reach optimum, the extended line of the outer side edges 211 of described triangle water channel 21 is crossing away from the edge in described fillet surface region 113 with on described the second curved surface area 112,, on a cross section of described chamber crystallizer narrow-surface copper 100, on described outer side edges 211 and described the second curved surface area 112 away from the edge in described fillet surface region 113 for point be located along the same line.
In the present embodiment, described cooling water channel 20 be specially for cross section be leg-of-mutton water channel, in other embodiments, described cooling water channel 20 can be rectangle water channel, circular course, and run through the pass water channel of crystallizer leptoprosopy, the number of described cooling water channel is multiple, described multiple cooling water channel can be rectangle water channel, circular course, and run through pass water channel or above two kinds or the two or more combinations of crystallizer leptoprosopy.
Above-mentioned chamber crystallizer narrow-surface copper 100 is not only applicable to curved mould, is applicable to straight mo(u)ld yet, and it is suitable for 100 millimeters～400 millimeters of the thickness of casting strand, 700 millimeters～2500 millimeters of the width of casting strand.The material of described chamber crystallizer narrow-surface copper 100 is the one in silver-bearing copper, chromium zirconium copper, phosphor-copper, beryllium copper, in order to improve the shelf life of crystallizer, has ferronickel coating or nickel cobalt coating on described working face 10.
Particularly, in the time of 230 millimeters of continuous castings × 1600 millimeters of medium carbon alloy steel continuous casting billets, Part I 11 is the part in the scope of 350 millimeters suitable for reading of distance crystallizer on working face 10, the crown height suitable for reading of described two the second curved surface areas 112 is 1.5 millimeters～2.5 millimeters, and the second-degree parabola equation in described first surface region 111 is y=ax
2+ 1613.4, described a is 5.0 × e
-6～3.5 × e
-5, the radius in described two fillet surface regions 113 is 10 millimeters.The number of described cooling water channel 20 is multiple, and the width of each water channel is the rectangle water channel of 6 millimeters, and two water channels in outside are the longest, and length is 40 millimeters～50 millimeters.The longest water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region 113 on corresponding the second curved surface area 112, the inclination angle a of the outer side edges of long water channel is 70 degree～80 degree, the strand of applying the casting of this crystallizer does not check out slab surface crack, and the coiled sheet of institute's rolling is not found the generation of limit portion fine rule.
Again, in the time of 230 millimeters of continuous castings × 1800 millimeters of pipeline steel continuous casting blanks, Part I 11 is the part in the scope of 250 millimeters～300 millimeters suitable for reading of distance crystallizer on working face 10, the crown height suitable for reading of described two the second curved surface areas 112 is 1 millimeter～2 millimeters, and the radius in described two fillet surface regions 113 is 15 millimeters.The number of described cooling water channel 20 is multiple, and the width of each water channel is the rectangle water channel of 6 millimeters, and two water channels in outside are the longest, and length is 40 millimeters～50 millimeters.The longest water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region 113 on corresponding the second curved surface area 112, the inclination angle a of the outer side edges of long water channel is 70 degree～85 degree, the strand of applying the casting of this crystallizer does not check out slab surface crack, and the coiled sheet of institute's rolling is not found the generation of limit portion fine rule.
Again, in the time that 230 millimeters × 1400 millimeters peritectoids of continuous casting contain niobium steel continuous casting billet, Part I 11 is the part in the scope of 250 millimeters～350 millimeters suitable for reading of distance crystallizer on working face 10, the crown height suitable for reading of described two the second curved surface areas 112 is 1.5 millimeters～2.5 millimeters, and the radius in described two fillet surface regions 113 is 10 millimeters.The number of described cooling water channel 20 is multiple, and the width of each water channel is the rectangle water channel of 5 millimeters, and two water channels in outside are the longest, and length is 35 millimeters～50 millimeters.The longest water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region 113 on corresponding the second curved surface area 112, the inclination angle a of the outer side edges of long water channel is 65 degree～75 degree, the strand of applying the casting of this crystallizer does not check out slab surface crack, and the coiled sheet of institute's rolling is not found the generation of limit portion fine rule.
It is that two second curved surface areas of 1 millimeter～3 millimeters and radius are two fillet surface regions compositions of 5 millimeters～35 millimeters that above-mentioned chamber crystallizer narrow-surface copper 100 is set to the first surface region of second-degree parabola, crown height suitable for reading by the part in the scope of 200 millimeters～400 millimeters suitable for reading of distance crystallizer on working face, thereby effectively make up the contraction of fillet surface, strengthen the uniformity of solidifying of fillet surface place base shell, in addition, distance away from the edge in described fillet surface region on cooling water channel and described the second curved surface area is set to 20 millimeters～40 millimeters, be set to 10 millimeters～30 millimeters with the distance in described fillet surface region, make that on described the second curved surface area, marginal portion and the described fillet surface region away from described fillet surface region can be by effectively cooling, thereby effectively control strand corner defect, the circular arc chamfering amount due to fillet surface that solved in prior art is little, thereby make strand bight temperature increase limited, fail fully to solve heat transfer problem, cause strand to produce many lobes, even there is steel leakage accident, cause the poor technical problem of crystallizer practical application effect of chamfering.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a chamber crystallizer narrow-surface copper, is characterized in that, the working face of described chamber crystallizer narrow-surface copper comprises:
Part I, is the curved surface of depression, and described Part I is the part in the scope of 200 millimeters～400 millimeters suitable for reading of distance crystallizer on working face, and described Part I comprises:
First surface region is second-degree parabola region;
Two the second curved surface areas, for crown height suitable for reading is the curved surface of 1 millimeter～3 millimeters;
Two fillet surface regions, for radius is the curved surface of 5 millimeters～35 millimeters, described two fillet surface regions connect respectively relative both sides and described two second curved surface areas in described first surface region;
Part II, with described first surface region, two the second curved surface areas and two fillet surface joint areas, described Part II is the linear conical surface;
On described chamber crystallizer narrow-surface copper, also offer the cooling water channel for cooling described working face, distance away from the edge in described fillet surface region on described cooling water channel and described the second curved surface area is 20 millimeters～40 millimeters, with the distance in described fillet surface region be 10 millimeters～30 millimeters.
2. chamber crystallizer narrow-surface copper as claimed in claim 1, is characterized in that, the second-degree parabola equation in described first surface region is y=ax
2+ b, described x is length of mould, described a is 5.5 × e
-6～3.5 × e
-5, described b is for comprising shrinkage factor strand size.
3. chamber crystallizer narrow-surface copper as claimed in claim 1 or 2, it is characterized in that, described cooling water channel is that cross section is the water channel of triangle water distribution, and the distance away from the edge in described fillet surface region on described cooling water channel and described the second curved surface area is specially: on the outer side edges of the water channel of described triangle water distribution and described the second curved surface area away from the beeline at the edge in described fillet surface region.
4. chamber crystallizer narrow-surface copper as claimed in claim 3, is characterized in that, the inclination angle of the outer side edges of described triangle water channel is 60～90 degree.
5. chamber crystallizer narrow-surface copper as claimed in claim 4, is characterized in that, the extended line of the outer side edges of described triangle water channel is crossing away from the edge in described fillet surface region with on described the second curved surface area.
6. chamber crystallizer narrow-surface copper as claimed in claim 1, it is characterized in that, described Part I is the part in the scope of 350 millimeters suitable for reading of distance crystallizer on described working face, the crown height suitable for reading of described two the second curved surface areas is 1.5 millimeters～2.5 millimeters, and the second-degree parabola equation in described first surface region is y=ax
2+ 1613.4, described a is 5.0 × e
-6～3.5 × e
-5the radius in described two fillet surface regions is 10 millimeters, described cooling water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region on corresponding described the second curved surface area, and the inclination angle of the outer side edges of described cooling water channel is 70 degree～80 degree.
7. chamber crystallizer narrow-surface copper as claimed in claim 1, it is characterized in that, described Part I is the part in the scope of 250 millimeters～300 millimeters suitable for reading of distance crystallizer on described working face, the crown height suitable for reading of described two the second curved surface areas is 1 millimeter～2 millimeters, the radius in described two fillet surface regions is 15 millimeters, described cooling water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region on corresponding the second curved surface area, and the inclination angle of the outer side edges of described cooling water channel is 70 degree～85 degree.
8. chamber crystallizer narrow-surface copper as claimed in claim 1, it is characterized in that, described Part I is the part in the scope of 250 millimeters～350 millimeters suitable for reading of distance crystallizer on described working face, the crown height suitable for reading of described two the second curved surface areas is 1.5 millimeters～2.5 millimeters, the radius in described two fillet surface regions is 10 millimeters, described cooling water channel is 20 millimeters～30 millimeters with the distance away from the edge in described fillet surface region on corresponding the second curved surface area, and the inclination angle of the outer side edges of described cooling water channel is 65 degree～75 degree.
9. chamber crystallizer narrow-surface copper as claimed in claim 1, it is characterized in that, described cooling water channel is that cross section is the cooling water channel of triangle water distribution, described cooling water channel is rectangle water channel, circular course, and run through the pass water channel of crystallizer leptoprosopy, the number of described cooling water channel is multiple, described multiple cooling water channel can be rectangle water channel, circular course, and run through pass water channel or above two kinds or the two or more combinations of crystallizer leptoprosopy.
10. chamber crystallizer narrow-surface copper as claimed in claim 1, is characterized in that, has ferronickel coating or nickel cobalt coating on described working face.
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| 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 |
| 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 |
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| CN109158557A (en) * | 2018-09-30 | 2019-01-08 | 邯郸钢铁集团有限责任公司 | A kind of method that chamfer crystallizer conticaster produces antiacid anti-corrosion pipeline plate slab |
| CN109570461A (en) * | 2017-09-28 | 2019-04-05 | 上海梅山钢铁股份有限公司 | A kind of device of full bow type continuous casting machine manufacture chamfering slab |
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| CN104874754A (en) * | 2015-06-19 | 2015-09-02 | 东北大学 | Slab narrow-face inwards-convex curved-surface crystallizer and design method thereof |
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| CN105964958A (en) * | 2016-07-22 | 2016-09-28 | 东北大学 | Gradient curvature slanting length chamfering crystallizer and design method thereof |
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| CN109158557A (en) * | 2018-09-30 | 2019-01-08 | 邯郸钢铁集团有限责任公司 | A kind of method that chamfer crystallizer conticaster produces antiacid anti-corrosion pipeline plate slab |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |