CN203725727U - Support roller device for deforming corners of chamfered continuous castings - Google Patents
Support roller device for deforming corners of chamfered continuous castings Download PDFInfo
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- CN203725727U CN203725727U CN201420113000.8U CN201420113000U CN203725727U CN 203725727 U CN203725727 U CN 203725727U CN 201420113000 U CN201420113000 U CN 201420113000U CN 203725727 U CN203725727 U CN 203725727U
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- plane
- chamfering
- continuous casting
- casting billet
- roller device
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 61
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- 238000006073 displacement reaction Methods 0.000 claims description 4
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- 238000005096 rolling process Methods 0.000 description 10
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- 238000004519 manufacturing process Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
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- 238000005457 optimization Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model relates to the field of metal solidification and continuous casting, in particular to a support roller device for deforming corners of chamfered continuous castings. The support roller device comprises support rollers (1) each having an alpha-angle slope, movable bearing blocks (2), bearing block moving rails (3), bearing block motion control mechanisms (4), and an inner arc or outer arc frame (5) of a casting machine. The support rollers (1) are arranged on the inner arc and/or outer arc frame (5) in the horizontal segment of the casting machine. The support faces of the support rollers (1) contact and squeeze with small blunt corners (7), in contact with an inner/outer arc large surface, of a chamfered continuous casting (6), so that each small blunt corner (7) is squeezed into two large blunt corners (8-1) and (8-2). The support roller device has the advantages that on the premise of fully controlling and eliminating transverse cracks in corners, the shape of the corners of the castings is optimized and straight cracks in the edges of plates are eliminated.
Description
Technical field
The utility model relates to metal freezing and continuous casting field, particularly a kind of to carry out the support roller device of bight distortion with chamfering continuous casting billet.
Background technology
Along with development and the modern continuous casting technology of world's metallurgical technology are constantly progressive, the steel grade of can casting constantly expands, and some high alloys, high-quality, high crack sensitivity steel grade are constantly produced in the continuous casting production procedure of large-scale iron and steel enterprise.But in the production of Strip, the vertical crack of hot rolled plate strip side portion or stick up skin defect be always puzzlement modern metallargist a general character difficult problem.
Especially in the recent period along with the development of continuously casting and continuously rolling technology, due to the mode that has adopted strand hot charging directly to enter heating furnace, saved widely the energy, so continuously casting and continuously rolling technology is widely used in the production of smelter.But the adverse effect that the application of strand continuously casting and continuously rolling technology brings is exactly: because strand cannot carry out off-line cleaning, all blemish (comprising: transverse corner crack line, longitudinal crack etc.) of strand all will inevitably directly reflect on final rolled strip surface.This has also just caused development and application with the crystallizer technology of chamfering.
Employing is with the crystallizer technology of chamfering, and it makes original each right angle of strand become two obtuse angles, to eliminate stress crooked and aligning process, concentrate, thus the generation that has fundamentally solved continuous casting billet transverse corner crack line.But, because the continuous casting billet corner shape of producing with chamfer crystallizer is restricted, as the angle of chamfering strand is generally 25 °～45 °, fillet surface length, be 30～85mm, the chamfer angle excessive (as being greater than 45 °) of the strand that employing is produced with the crystallizer of chamfering, can bring two defects: the one, with the crystallizer of chamfering, significantly decline service life; The 2nd, increased the risk of strand longitudinal corner crack bleed-out.Therefore, in prior art, the angle of chamfer crystallizer is all less than 45 °.
Although adopt the problem that can effectively solve strand transverse corner crack line with the crystallizer technology of chamfering,, a large amount of production practices results show: the limit portion that adopts the chamfer crystallizer technology of above-mentioned parameter can not eliminate Strip completely is directly split.
For this reason, abroad some metallargists have developed the method that the bight of strand is rolled, to obtain more reasonably continuous casting billet of corner shape.
In Japan Patent P2001-18040A, name is called " production method of continuous casting steel billet ", proposed a kind of under crystallizer four bights of strand the device of pressure rolling backing roll is set, it will go out the quadricorn rectangular casting blank pressure rolling of crystallizer tool and become to have the casting blank shape at eight angles.To avoid strand to occur corner defect in the operation of rolling subsequently.In actual production, below crystallizer exit, thinner base shell, the strand that is full of molten steel are rolled, make the bight distortion of strand, a right angle is offseted, make it become two obtuse angles that are greater than 90 °, this is completely infeasible, is also very dangerous.
For fear of the Dui Pike bight, bottom in crystallizer exit, be rolled brought bleed-out risk, in the clear 63-215352 of Japan Patent, name is called " casting apparatus ", has proposed, on the Blank drawing machine in Roller Apron Line, roll is set, to being rolled of strand bight.Although the bleed-out risk that the method can avoid the rolling of strand bight to bring, but in modern slab caster, Blank drawing machine is all arranged in the fan-shaped section of casting machine, and the structural design of compact cannot be settled roll and the drive unit that four jiaos of strands is carried out to heavy reduction rolling at all.In addition, because strand inevitably can produce transverse corner crack line, this milling method can make the transverse crack in strand bight become the defect on stocking surface, and cannot clear up, and can only clear up by cutting edge.Thereby also just significantly reduced lumber recovery.
In the flat 6-320204 of Japan Patent, name is called " chamfering method of milling train and continuous casting billet corner for chamfered edge ", it is at the rear portion of conticaster, a special-purpose milling train is set, continuous casting billet to rectangle is rolled, make the bight of the continuous casting billet of rectangle become the shape of large chamfering, to eliminate in the rolling process of rear portion, the limit portion linearity crackle that sheet material edge occurs.The method has two large shortcomings: the one, and owing to will the bight of strand being produced to larger distortion, so equipment investment is large; The 2nd, said strand inevitably can produce transverse corner crack line above, and this milling method can make the transverse crack in strand bight become the defect on stocking surface, thereby has also just significantly reduced lumber recovery.
Summary of the invention
For the defect existing in above-mentioned technology and deficiency, it is a kind of to carry out the support roller device of bight distortion with chamfering continuous casting billet that the purpose of this utility model is to provide, can be in the situation that controlling and eliminate transverse corner crack line completely, optimization strand corner shape, elimination sheet material edge directly split.
In order to achieve the above object, the utility model provides following technical scheme:
To carry out a support roller device for bight distortion with chamfering continuous casting billet, this band chamfering continuous casting billet has 2 to 4 original chamfering inclined-planes 11, and there is an obtuse angle 7 on this original chamfering inclined-plane 11 at the wide face of continuous casting billet, wherein,
This support roller device comprises with the backing roll 1 on inclined-plane, α angle, movable axle bearing 2, bearing block moving track 3, the handle sturcture 4 of bearing block motion, inner arc or the outer arc frame 5 of casting machine;
The inner arc of the horizontal segment of casting machine and/or outside be provided with the backing roll 1 with inclined-plane, α angle on arc frame 5, this supporting surface with the backing roll 1 on inclined-plane, α angle with chamfering continuous casting billet 6, contact and push with the obtuse angle 7 that the large face of inside/outside arc joins, make this obtuse angle 7 be extruded into two larger obtuse angle 8-1 and 8-2.
The bight that described support roller device extruding continuous casting billet completes is deformed into: make each original chamfering inclined-plane 11 be extruded into two chamfering inclined-plane 12-1 and 12-2, and the length on the two chamfering inclined-planes that obtain after extruding and the length S that L1+L2 is greater than original chamfering inclined-plane 11.
The supporting surface of the described backing roll 1 with inclined-plane, α angle and horizontal plane (or the wide face of strand) angulation α is 15 °～30 °.
The described slab thickness with chamfering continuous casting billet 6 is 130～450mm, and original chamfer angle beta is 25 °～45 °, and original chamfering chamfer length S is 30～85mm; The chamfering inclined-plane 12-2 length L 2 that described extruding forms is 10～50mm, and height H is 3～25mm.
The supporting surface of the described backing roll 1 with inclined-plane, α angle is be selected from following several situations a kind of:
A. inclined-plane; B. cambered surface; C. inclined-plane adds plane; D. cambered surface adds plane;
In the situation of c, d, wherein, the planar section 10 of supporting surface is consistent to the height of strand supporting plane with inner arc or the outer arc of Roller Apron Line.
Described is structures of hydraulic drive piston bar for controlling the handle sturcture 4 with the bearing block motion of moving shaft holder, or the motorized motions leading screw structure of rotating.
In the handle sturcture 4 of described moving shaft holder, be provided with mensuration with the displacement transducer of the operating position of the backing roll 1 on inclined-plane, α angle.
The described bearing block moving track 3 for mobile movable axle bearing 2 is square or swallow-tail form.
The described backing roll 1 with inclined-plane, α angle is placed on the position of last backing roll of last horizontal segment of casting machine, or hangs on the exit of horizontal segment, or is placed on the position of arbitrary backing roll of other horizontal segment.
The beneficial effects of the utility model are:
The continuous casting billet of producing with the crystallizer technology of chamfering, can eliminate stress crooked and aligning process and concentrate, thus the generation that has fundamentally solved continuous casting billet transverse corner crack line.On this basis, adopt a kind of backing roll with inclined-plane to support with large the chamfering being connected up and down the continuous casting billet with chamfering, and in the process supporting, the squeezed generation in bight of strand is out of shape naturally, although be very little deflection, it makes original less obtuse angle become two larger obtuse angles, effectively raise the bight temperature in the operation of rolling, so just can, in the situation that controlling and eliminate transverse corner crack line completely, reach optimization strand corner shape, eliminate the object that sheet material edge directly splits.
Device of the present utility model compared with prior art, is first that bight deflection is little, is secondly the defect that does not have strand transverse corner crack line.Therefore reliable, the advantage such as processing is simple, weight of equipment is light that possesses skills, does not produce any negative effect to the production of conticaster.
Accompanying drawing explanation
Fig. 1 is a kind of to carry out the support roller device schematic diagram of bight distortion with chamfering continuous casting billet;
Local enlarged diagram before Fig. 2 a is out of shape with chamfering continuous casting billet bight;
Local enlarged diagram after Fig. 2 b is out of shape with chamfering continuous casting billet bight;
Fig. 3 is to carrying out the local enlarged diagram of bight distortion with chamfering continuous casting billet;
The backing roll on inclined-plane, Fig. 4 band α angle is only arranged on the schematic diagram of the inner arc of casting machine;
The backing roll on inclined-plane, Fig. 5 band α angle is only arranged on the schematic diagram of the outer arc of casting machine;
Fig. 6 a is the schematic diagram on inclined-plane with the supporting surface of the backing roll on inclined-plane, α angle;
Fig. 6 b is the schematic diagram of cambered surface with the supporting surface of the backing roll on inclined-plane, α angle;
Fig. 6 c is the schematic diagram that inclined-plane adds plane with the supporting surface of the backing roll on inclined-plane, α angle;
Fig. 6 d is the schematic diagram that cambered surface adds plane with the supporting surface of the backing roll on inclined-plane, α angle;
The moving track of Fig. 7 a bearing block is square schematic diagram;
The moving track of Fig. 7 b bearing block is the schematic diagram of swallow-tail form;
The backing roll on inclined-plane, Fig. 8 band α angle hangs on the schematic diagram in horizontal segment exit.
[primary clustering symbol description]
1 backing roll with inclined-plane, α angle
2 movable axle bearings
3 bearing block moving tracks
The handle sturcture of 4 bearing block motions
The inner arc of 5 casting machine horizontal segments or outer arc frame
6 band chamfering continuous casting billets
The 7 less obtuse angles that join with chamfering continuous casting billet and the large face of inside/outside arc
Two larger obtuse angles that the obtuse angle that 8-1,8-2 are less is extruded into naturally
The conventional backing roll of 9 casting machine horizontal segments
The planar section of the 10 backing roll supporting surfaces with inclined-plane, α angle
11 original chamfering inclined-planes
Two chamfering inclined-planes that obtain after 12-1,12-2 are extruded into
α is with supporting surface and the horizontal plane angulation of the backing roll 1 on inclined-plane, α angle
β is with the original angle of chamfering continuous casting billet
S is with the original chamfering chamfer length of chamfering continuous casting billet
L1, the L2 chamfering chamfer length after with the extruding of chamfering continuous casting billet
H is with the bevel altitude being squeezed into of chamfering continuous casting billet
The specific embodiment
Further illustrate with reference to the accompanying drawings the specific embodiment of the present utility model below.
As shown in Figure 1, for of the present utility model a kind of to carry out the support roller device of bight distortion with chamfering continuous casting billet, this support roller device mainly comprises handle sturcture 4, casting machine inner arc or the outer arc frame 5 with the backing roll 1 on inclined-plane, α angle, movable axle bearing 2, bearing block moving track 3, bearing block motion.Wherein, backing roll 1 symmetry with inclined-plane, α angle of described a pair of symmetry is arranged in movable axle bearing 2, movable axle bearing 2 has bearing block moving track 3, this bearing block moving track 3 is arranged on the inner arc or outer arc frame 5 of casting machine horizontal segment, the handle sturcture 4 of bearing block motion is connected with movable axle bearing 2, and realizes the movement of movable axle bearing 2 and location by bearing block motion handle sturcture 4.
Wherein, the supporting surface of the described backing roll 1 with inclined-plane, α angle and horizontal plane angulation α are 15 °～30 °.This supporting surface contact with the less obtuse angle 7 joining with inner arc or the large face of outer arc with chamfering continuous casting billet with chamfering continuous casting billet 6 and push described in less obtuse angle 7, make the less obtuse angle 7 that the large face of this and inner arc or outer arc joins be extruded into two larger obtuse angle 8-1,8-2, the described chamfer length L2 being squeezed into is 10～50mm, height H is 3～25mm, as shown in Figure 3, for to carry out the local enlarged diagram of bight distortion with chamfering continuous casting billet.
This supporting surface with the backing roll 1 on inclined-plane, α angle can be inclined-plane, sees Fig. 6 a; Can be cambered surface, see Fig. 6 b; Can also be that inclined-plane combines with facing directly, see Fig. 6 c; Also can be that cambered surface combines with facing directly, see Fig. 6 d.Wherein, in the situation of Fig. 6 c and 6d, with planar section 10 and inner arc or the outer arc of Roller Apron Line of the backing roll supporting surface on inclined-plane, α angle, the height of strand supporting plane is consistent.
The described backing roll 1 with inclined-plane, α angle can be arranged on inner arc and the outer arc of casting machine simultaneously, also can only be arranged on inner arc or the outer arc of casting machine.Respectively as shown in Figure 4 and Figure 5, for the backing roll with inclined-plane, α angle is only arranged on the schematic diagram of the inner arc of casting machine, with the backing roll on inclined-plane, α angle, be only arranged on the schematic diagram of the outer arc of casting machine.
The handle sturcture 4 of described bearing block motion is for controlling and moving shaft holder, and it can be the structure of hydraulic drive piston bar, can be also the structure that motorized motions leading screw rotates.
Bearing block moving track 3 for mobile movable axle bearing 2 can be square, as shown in Figure 7a; Also can be swallow-tail form, as shown in Figure 7b.
The described backing roll 1 with inclined-plane, α angle can be placed on the position of last backing roll of last horizontal segment of casting machine, as shown in Figure 1; Also can hang on as shown in Figure 8 the exit of horizontal segment; Still can be placed on the position of arbitrary backing roll of other horizontal segment, be used in combination with the conventional backing roll 9 of casting machine horizontal segment.
Described to carry out the support roller device of bight distortion with chamfering continuous casting billet, wherein, the described slab thickness with chamfering continuous casting billet is 130～450mm, and original chamfer angle beta is 25 °～45 °, and original chamfering chamfer length S is 30～85mm.
In use, the inner arc of casting machine horizontal segment and/or outer arc frame 5 are provided with the backing roll 1 with inclined-plane, α angle.In the handle sturcture 4 of moving shaft holder, be provided with displacement transducer, this displacement transducer can be measured the operating position of the described backing roll 1 with inclined-plane, α angle.According to the casting blank section width of institute's continuous casting, the handle sturcture 4 moving by bearing block regulates the position of movable axle bearing 2, and then the position of the backing roll 1 on inclined-plane, accommodation zone α angle, the inclined-plane of backing roll is just in time supported on the bight at four less obtuse angles 7 that join with chamfering continuous casting billet 6 and the large face of interior outer arc
Along with the carrying out of process of billet withdrawal, less obtuse angle 7 is extruded into two larger obtuse angle 8-1 and 8-2 naturally like this.As shown in Figure 2 a, be with the local enlarged diagram before the distortion of chamfering continuous casting billet bight, Fig. 2 b is depicted as this local enlarged diagram after with the distortion of chamfering continuous casting billet bight.The continuous casting billet of this corner shape can, in the situation that controlling and eliminate transverse corner crack line completely, reach optimization strand corner shape, eliminate the object that sheet material edge directly splits.
Claims (9)
1. to carry out a support roller device for bight distortion with chamfering continuous casting billet, this band chamfering continuous casting billet has 2 to 4 original chamfering inclined-planes (11), and there is an obtuse angle (7) on this original chamfering inclined-plane (11) at the wide face of continuous casting billet, it is characterized in that:
This support roller device comprises with the backing roll on inclined-plane, α angle (1), movable axle bearing (2), bearing block moving track (3), the handle sturcture (4) of bearing block motion, inner arc or the outer arc frame (5) of casting machine;
The inner arc of the horizontal segment of casting machine and/or outside be provided with the backing roll (1) with inclined-plane, α angle on arc frame (5), the supporting surface of this backing roll with inclined-plane, α angle (1) contacts and pushes with the obtuse angle (7) that joins with the large face of inside/outside arc of band chamfering continuous casting billet (6), makes this obtuse angle (7) be extruded into two larger obtuse angles (8-1) and (8-2).
2. as claimed in claim 1 to carry out the support roller device of bight distortion with chamfering continuous casting billet, the bight that described support roller device extruding continuous casting billet completes is deformed into: make each original chamfering inclined-plane (11) be extruded into two chamfering inclined-planes (12-1) and (12-2) and the length on the two chamfering inclined-planes that obtain after pushing and the length S that L1+L2 is greater than original chamfering inclined-plane (11).
3. as claimed in claim 1 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: the supporting surface of the described backing roll with inclined-plane, α angle (1) and horizontal plane (or the wide face of strand) angulation α is 15 °～30 °.
4. as claimed in claim 1 or 2 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: the slab thickness of described band chamfering continuous casting billet (6) is 130～450mm, original chamfer angle beta is 25 °～45 °, and original chamfering chamfer length S is 30～85mm; Chamfering inclined-plane (12-2) length L 2 that described extruding forms is 10～50mm, and height H is 3～25mm.
5. as claimed in claim 1 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: the supporting surface of the described backing roll with inclined-plane, α angle (1) is be selected from following several situations a kind of:
A. inclined-plane; B. cambered surface; C. inclined-plane adds plane; D. cambered surface adds plane;
In the situation of c, d, wherein, the planar section of supporting surface (10) is consistent to the height of strand supporting plane with inner arc or the outer arc of Roller Apron Line.
6. as claimed in claim 1 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: described for controlling the handle sturcture (4) with the bearing block motion of moving shaft holder, the structure of hydraulic drive piston bar, or the structure of motorized motions leading screw rotation.
7. as claimed in claim 1 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: in the handle sturcture of described moving shaft holder (4), be provided with mensuration with the displacement transducer of the operating position of the backing roll (1) on inclined-plane, α angle.
8. as claimed in claim 1 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: the described bearing block moving track (3) for mobile movable axle bearing (2) is square or swallow-tail form.
9. as claimed in claim 1 or 2 to carry out the support roller device of bight distortion with chamfering continuous casting billet, it is characterized in that: the described backing roll with inclined-plane, α angle (1) is placed on the position of last backing roll of last horizontal segment of casting machine, or hang on the exit of horizontal segment, or be placed on the position of arbitrary backing roll of other horizontal segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113000.8U CN203725727U (en) | 2014-03-13 | 2014-03-13 | Support roller device for deforming corners of chamfered continuous castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113000.8U CN203725727U (en) | 2014-03-13 | 2014-03-13 | Support roller device for deforming corners of chamfered continuous castings |
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| Publication Number | Publication Date |
|---|---|
| CN203725727U true CN203725727U (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113000.8U Expired - Lifetime CN203725727U (en) | 2014-03-13 | 2014-03-13 | Support roller device for deforming corners of chamfered continuous castings |
Country Status (1)
| Country | Link |
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| CN (1) | CN203725727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831413A (en) * | 2014-03-13 | 2014-06-04 | 钢铁研究总院 | Back-up roll device and method for conducting chamfer deformation on continuous casting billet with chamfer |
| CN105983668A (en) * | 2015-02-27 | 2016-10-05 | 新日铁住金工程技术株式会社 | Soft reduction roller, soft reduction device with same and manufacturing method of casting blank |
| AT16115U1 (en) * | 2016-08-22 | 2019-02-15 | Zhong Da National Engineering And Research Center Of Continuous Casting Tech Co Ltd | Two-roll continuous casting table corner rolling mill with inclined rolls |
-
2014
- 2014-03-13 CN CN201420113000.8U patent/CN203725727U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831413A (en) * | 2014-03-13 | 2014-06-04 | 钢铁研究总院 | Back-up roll device and method for conducting chamfer deformation on continuous casting billet with chamfer |
| US9643242B2 (en) | 2014-03-13 | 2017-05-09 | Central Iron And Steel Research Institute | Back-up roll device and method for conducting corner deformation on chamfered continuous casting slab |
| CN105983668A (en) * | 2015-02-27 | 2016-10-05 | 新日铁住金工程技术株式会社 | Soft reduction roller, soft reduction device with same and manufacturing method of casting blank |
| AT16115U1 (en) * | 2016-08-22 | 2019-02-15 | Zhong Da National Engineering And Research Center Of Continuous Casting Tech Co Ltd | Two-roll continuous casting table corner rolling mill with inclined rolls |
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Granted publication date: 20140723 |
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