CN110586883B - Magnetic suspension type horizontal caterpillar continuous casting crystallizer - Google Patents
Magnetic suspension type horizontal caterpillar continuous casting crystallizer Download PDFInfo
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- CN110586883B CN110586883B CN201910882754.7A CN201910882754A CN110586883B CN 110586883 B CN110586883 B CN 110586883B CN 201910882754 A CN201910882754 A CN 201910882754A CN 110586883 B CN110586883 B CN 110586883B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
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Abstract
The invention relates to a magnetic suspension type horizontal crawler belt continuous casting crystallizer which comprises a machine base, a melting tank group, a crawler belt group, a water spraying group and a guide roller group. The track group comprises a motor, a driving roller, a supporting roller, a closed-loop track and magnetic blocks. The closed-loop crawler belt is composed of a pin shaft group and a connecting rod group which are connected with a copper plate group in series. The driving roller and the supporting roller respectively drive and support the closed-loop crawler belt, and the magnetic blocks are located on the inner side of the closed-loop crawler belt. The double wide caterpillar bands and the double narrow caterpillar bands enclose a rectangular column cavity of the continuous casting crystallizer. During continuous casting, molten steel is injected into a cavity of the crystallizer, the driving roller drives the double-wide and narrow tracks to move circularly, magnetic suspension force is generated by the magnetic blocks, the water spraying group cools the copper track plate group, the molten steel in the cavity forms a casting blank, the casting blank is supported by the guide roller group to move forwards, the molten steel, the casting blank and the crystallizer can be continuously cast in a non-contact mode, surface vibration marks of the continuous casting blank are eliminated, the quality of the casting blank is greatly improved, the later-stage surface treatment amount is avoided, and the continuous casting yield is remarkably improved.
Description
Technical Field
The invention belongs to the technical field of continuous casting, and relates to a magnetic suspension type horizontal caterpillar band continuous casting crystallizer suitable for steel metal.
Background
The continuous casting process of metals such as steel and the like is to inject molten metal into a crystallizer and obtain a continuous casting billet through cooling and forming. In order to avoid the adhesion of molten metal and the wall of the crystallizer, the crystallizer is driven by a transmission device to reciprocate up and down, so that the wall of the crystallizer and the continuous casting slab move relatively. This enables the slab to be drawn out of the mold smoothly. However, the mold adopts a reciprocating mode, so that oscillation marks are formed on the surface of the continuous casting billet, which has a great negative effect on the quality of the continuous casting billet. Transverse cracks on the surface of the cast slab often occur at the root of the chatter marks. In addition, inclusions, bubbles, and the like are liable to gather at the root of the chatter mark. Therefore, some continuous casting billets of high-quality steel grades can be rolled only after being subjected to the peeling treatment. The rejection rate of the rolled stock is high. In addition, due to the reciprocating vibration mode of the vibration type crystallizer, the problem that the lower half part gap between the continuous casting billet and the crystallizer is not filled sufficiently by the covering slag exists, so that the defects of uneven heat transfer between the continuous casting billet and the crystallizer, longitudinal cracks of the casting billet and the like are easily caused. In patent CN 107790653A, the wide wall and the narrow wall of the crystallizer are both made of wear-resistant and corrosion-resistant steel strips. Patent CN 102049478A stainless steel composite plate blank solid-liquid phase continuous compounding device, which is used for continuously producing stainless steel composite plate blanks.
The current suspension technology mainly comprises magnetic suspension, optical suspension, acoustic suspension, air flow suspension, electric suspension, particle beam suspension and the like, wherein the magnetic suspension technology is mature. Magnetic levitation technology has many implementation forms, and can be mainly divided into passive levitation in which the system is self-stable, active levitation in which the system is not self-stable, and the like. At present, magnetic levitation technology is successfully used for magnetic levitation trains. The novel vehicle consists of a non-contact magnetic bearing, a magnetic guide and a linear driving system. The magnetic suspension technology supports molten steel and casting blanks moving in the continuous casting process through non-contact magnetic force, and the improvement of the continuous casting yield is the development direction of continuous casting equipment in the future.
Disclosure of Invention
The invention aims to provide a magnetic suspension type horizontal caterpillar band continuous casting crystallizer in a continuous casting process. By utilizing the magnetic suspension thrust, the contact between molten steel and a casting blank and a horizontal crawler belt in the continuous casting process is avoided, the vibration marks on the surface of the continuous casting blank are eliminated, and the quality of the casting blank is greatly improved. Thereby reducing the surface treatment amount and obviously improving the continuous casting yield.
The invention provides a magnetic suspension type horizontal crawler belt continuous casting crystallizer, which comprises a machine base, a crawler belt group, a molten pool group, a water spraying group and a guide roller group, wherein the crawler belt group comprises a double-wide crawler belt group and a double-narrow crawler belt group, the double-wide crawler belt group and the double-narrow crawler belt group form a rectangular column cavity of the continuous casting crystallizer in a surrounding manner, and a fixed gap is kept between a metal liquid and the inner side wall of the cavity when the metal liquid flows through the cavity; the double-wide crawler group and the double-narrow crawler group respectively comprise a motor, a driving roller, a supporting roller, a closed-loop crawler and a magnetic block, the magnetic block is fixedly connected with the base and positioned on the inner side of the closed-loop crawler, the magnetic block is connected with a control circuit to generate a stable magnetic field to enable molten metal to be suspended, the motor is fixedly connected with the base, the driving roller and the supporting roller are rotatably connected with the base, and a driving shaft of the motor is coaxially connected with the driving roller; the closed-loop crawler comprises a pin shaft group, a connecting rod group and a copper plate group, wherein the pin shaft group and the connecting rod group are connected with the copper plate group in series to form the closed-loop crawler, and two ends of the closed-loop crawler are respectively connected with the supporting roller and the driving roller through chain transmission; the machine base is fixedly connected with the water spraying group, the water spraying group is longitudinally arranged at equal intervals along the outer sides of the double-wide crawler group and the double-narrow crawler group, the molten pool group is fixedly connected with the left end of the machine base and comprises a left magnetic block and a tapping water pipe stop block, and the left magnetic block is connected with the left end face of the cavity of the crystallizer through the tapping water pipe stop block for sealing.
Preferably, the adjusting assembly is fixedly connected with the machine base, the guide roller group is rotationally connected with the adjusting assembly, and the guide roller group is parallel to the driving roller to support the casting blank to move forwards.
Preferably, the adjusting assembly comprises a ball screw, a guide rod, an adjusting plate and a locking device, the guide roller group is fixed on the adjusting plate, the two adjusting plates are connected through the ball screw and the guide rod, the axes of the two adjusting plates are parallel to each other, and the locking device is arranged on the side face of the adjusting assembly.
Preferably, the water spraying groups are correspondingly provided with water circulation components, and the hot water after cooling the copper plate group can be collected, recycled and circulated.
Preferably, the tapping pipe stopper is rectangular.
The invention has the following beneficial effects:
(1) the magnetic suspension force is utilized to realize the non-contact continuous casting of the molten steel and the casting blank with the crystallizer, eliminate the surface vibration marks of the continuous casting blank, greatly improve the quality of the casting blank, avoid the later surface treatment amount and obviously improve the yield of the continuous casting;
(2) the whole equipment of horizontal continuous casting is compact, and the required factory building is lifted a height and is little, and need not straightening equipment:
(3) avoiding the use of complex crystallizer vibration devices.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a front view of the present invention.
Fig. 2 is a cross-sectional view at a-a of the present invention.
Fig. 3 is a cross-sectional view at B-B of the present invention.
Reference numerals:
the device comprises a base 1, a melting tank group 2, a water spraying group 3, a guide roller group 4, a casting blank 5, a motor 6, a driving roller 7, a supporting roller 8, a closed-loop crawler belt 9, a magnet 10, a pin shaft group 11, a connecting rod group 12, a copper plate group 13, a tapping water pipe stop block 14, a left magnet 15 and an adjusting component 16.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains. For the reader's understanding, the device is described in terms of its orientation in fig. 1.
As shown in figures 1-3, a magnetic suspension type horizontal caterpillar band continuous casting crystallizer is different from a traditional continuous casting machine in that molten metal is cooled in the vertical direction, a casting blank is changed into a horizontal state by a bending roller, and straightening and stress release are performed by a straightening machine. The magnetic suspension type horizontal crawler continuous casting crystallizer mainly comprises a machine base 1, a crawler group, a molten pool group 2, a water spraying group 3 and a guide roller group 4, wherein a cooling copper plate can continuously operate through the crawler group, an installation space is provided for magnetic blocks 10 inside a crawler, the number and the arrangement mode of the crawler group are not limited in figure 2, the crawler group comprises a double-wide crawler group and a double-narrow crawler group, the two wide crawler groups are oppositely arranged, the two narrow crawler groups are oppositely arranged, the wide crawler group and the narrow crawler groups are arranged at intervals, the crawler groups are connected end to form a rectangular column cavity of the continuous casting crystallizer, molten metal flows in from one end of the cavity of the crystallizer and is suspended to keep a fixed gap with the inner side wall of the cavity when flowing through the cavity, and the contact between the molten metal and the continuous casting crystallizer in the continuous casting process is avoided, so that the vibration marks on the surface of the continuous casting.
As shown in fig. 3, each of the double wide track groups and the double narrow track groups includes a motor 6, a driving roller 7, a supporting roller 8, a closed-loop track 9 and a magnetic block 10, the motor 6 is fixedly connected with the base 1, the driving roller 7 and the supporting roller 8 are rotatably connected with the base 1, a driving shaft of the motor 6 can be directly connected with the driving roller 7 coaxially, or connected with the driving roller 7 after being connected with a speed reducer in series, a rotating direction of the driving roller 7 determines a rotating direction of the closed-loop track 9, and preferably, moving directions of the two closed-loop tracks 9 arranged oppositely are opposite to each other, so as to ensure symmetry of cooling effects of the metal liquid on the same vertical section, and as shown in fig. 1, rotating directions of the upper closed-loop track 9 and the driving roller 7 are opposite to rotating directions of. The magnetic blocks 10 are fixedly connected with the base 1 and located on the inner side of the closed-loop crawler belt 9, connectors are arranged on the back of the magnetic blocks 10 and connected with a control circuit, and the control circuit adjusts the energizing rules of the four magnetic blocks 10 by collecting parameters such as the flow rate and the section size of the molten metal, the rotating speed of the driving roller 7, the cooling strength and the continuous casting speed so as to generate a stable magnetic field to enable the molten metal to be in a suspended state.
The closed-loop crawler 9 comprises a pin shaft group 11, a connecting rod group 12 and a copper plate group 13, wherein the pin shaft group 11 and the connecting rod group 12 are connected with the copper plate group 13 in series to form the closed-loop crawler 9, and two ends of the closed-loop crawler 9 are respectively connected with the supporting roller 8 and the driving roller 7 through chain transmission. The water spraying groups 3 are fixedly connected with the base 1 and are longitudinally arranged at equal intervals along the outer sides of the double-wide crawler groups and the double-narrow crawler groups, flowing cooling water is sprayed out of the water spraying groups 3 to rapidly cool the copper plate groups 13, the cooling water absorbs heat energy, each water spraying group 3 is correspondingly provided with a water circulation assembly, each water circulation assembly comprises a water collecting pipeline, a heat energy consumption part and a recirculation structure, and hot water after cooling the copper plate groups 13 can be uniformly collected and recycled and then circulated for the next time.
Molten pool group 2 and frame 1 left end solid link to each other, molten pool group 2 includes left magnetic path 15 and tapping water pipe dog 14, and left magnetic path 15 also links to each other with control circuit to adjust the circular telegram law, tapping water pipe dog 14 links to each other with the cavity left end face of crystallizer, in order to avoid the molten metal to leak, and left magnetic path 15 links to each other through tapping water pipe dog 14 with the cavity left end face of crystallizer, and tapping water pipe dog 14 is the rectangle.
The using process of the invention is as follows:
the two wide crawler belt groups and the two narrow crawler belt groups are oppositely arranged and connected end to form a rectangular column cavity of the continuous casting crystallizer, magnetic blocks 10 are arranged inside a closed-loop crawler belt 9 of each crawler belt group, a left magnetic block 15 is arranged between a molten pool group 2 and the continuous casting crystallizer, each magnetic block 10 is connected with a control circuit to enable the generated magnetic field intensity to be controllable, water spraying groups 3 are longitudinally arranged on the outer side of the closed-loop crawler belt 9 at equal intervals, the water spraying groups 3 continuously spray cooling water to the copper plate group 13, and the water spraying groups 3 are also connected with the control circuit; the cooling intensity is controllable, the front end of the continuous casting crystallizer is connected with the molten pool group 2, and the rear end of the continuous casting crystallizer is connected with the guide roller group 4.
Firstly, an adjusting component 16 is arranged according to the thickness requirement of the casting blank 5, namely, the rotation angle of a motor is set by combining the lead parameters of a ball screw, and an adjusting plate is driven to move to a set position. Meanwhile, the continuous casting speed is set according to the capacity requirement of the equipment, and then parameters such as the flow rate of molten metal, the magnetic field intensity, the rotating speed of the driving roller 7, the cooling intensity and the like are adjusted.
Then, the magnetic block 10 and the left magnetic block 15 are electrified, so that molten metal flows into a cavity of the crystallizer from the molten pool group 2, a steel tapping water pipe stop block 14 ensures the sealing effect between the molten pool group 2 and the continuous casting crystallizer, the molten metal is influenced by a magnetic field when flowing through the cavity, and the molten metal is suspended to keep a fixed gap with the inner side wall of the cavity, so that the contact between the molten metal and the continuous casting crystallizer in the continuous casting process is avoided, and the surface vibration marks of a continuous casting blank are eliminated; the water spray group 3 continuously sprays cooling water to the copper plate group 13 to cool the copper plate group 13 outside the continuously moving closed-loop crawler 9, heat is transferred between the molten metal and the copper plate group 13, the outside of the molten metal firstly releases heat and becomes solid, and then the molten metal is rolled by the guide roller group 4.
And finally, the cooling water absorbs heat energy and then enters the water circulation assembly through the water collecting pipeline, the heat energy is utilized at other equipment, and the cooling water then enters the recirculation structure again for next circulation.
The continuous casting crystallizer has compact overall equipment, small lifting frame height of a required factory building and can be directly connected into the production line of the existing factory; by utilizing the magnetic suspension force, the non-contact continuous casting of molten steel and a casting blank and a crystallizer is realized, the surface vibration marks of the continuous casting blank are eliminated, the quality of the casting blank is greatly improved, the later-stage surface treatment amount is avoided, and the continuous casting yield is obviously improved; the water circulation assembly can improve the energy utilization rate of the equipment, and the adjusting assembly 16 can realize the processing of metal plates with various specifications.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a magnetic levitation formula horizontal track continuous casting crystallizer, its includes track group, frame, molten bath group, water spray group and guide roller group, its characterized in that:
the crawler belt group comprises a double-wide crawler belt group and a double-narrow crawler belt group, the double-wide crawler belt group and the double-narrow crawler belt group enclose a rectangular column cavity of the continuous casting crystallizer, and a fixed gap is kept between molten metal and the inner side wall of the cavity when the molten metal flows through the cavity;
the double-wide crawler group and the double-narrow crawler group respectively comprise a motor, a driving roller, a supporting roller, a closed-loop crawler and a magnetic block, the magnetic block is fixedly connected with the base and positioned on the inner side of the closed-loop crawler, the magnetic block is connected with a control circuit to generate a stable magnetic field to enable molten metal to be suspended, the motor is fixedly connected with the base, the driving roller and the supporting roller are rotatably connected with the base, and a driving shaft of the motor is coaxially connected with the driving roller;
the closed-loop crawler comprises a pin shaft group, a connecting rod group and a copper plate group, wherein the pin shaft group and the connecting rod group are connected with the copper plate group in series to form the closed-loop crawler, and two ends of the closed-loop crawler are respectively connected with the supporting roller and the driving roller through chain transmission;
the machine base is fixedly connected with the water spraying group, the water spraying group is longitudinally arranged at equal intervals along the outer sides of the double-wide crawler group and the double-narrow crawler group, the molten pool group is fixedly connected with the left end of the machine base and comprises a left magnetic block and a tapping water pipe stop block, and the left magnetic block is connected with the left end face of the cavity of the crystallizer through the tapping water pipe stop block for sealing.
2. The magnetic levitation type horizontal caterpillar continuous casting mold according to claim 1, wherein: the adjusting assembly is fixedly connected with the machine base, the guide roller group is rotationally connected with the adjusting assembly, and the guide roller group is parallel to the driving roller to support the casting blank to move forwards.
3. The magnetic levitation type horizontal caterpillar continuous casting mold according to claim 2, wherein: the adjusting assembly comprises a ball screw, a guide rod, an adjusting plate and a locking device, the guide roller set is fixed on the adjusting plate, the two adjusting plates are connected through the ball screw and the guide rod, the axes of the two adjusting plates are parallel to each other, and the locking device is arranged on the side face of the adjusting assembly.
4. The magnetic levitation type horizontal caterpillar continuous casting mold according to claim 1, wherein: the water spraying groups are correspondingly provided with water circulation components, and hot water after the copper plate group is cooled can be collected, secondarily utilized and circulated.
5. The magnetic levitation type horizontal caterpillar continuous casting mold according to claim 1, wherein: the steel tapping water pipe stop block is rectangular.
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| CN201910882754.7A CN110586883B (en) | 2019-09-18 | 2019-09-18 | Magnetic suspension type horizontal caterpillar continuous casting crystallizer |
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| CN201910882754.7A CN110586883B (en) | 2019-09-18 | 2019-09-18 | Magnetic suspension type horizontal caterpillar continuous casting crystallizer |
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| CN110586883A CN110586883A (en) | 2019-12-20 |
| CN110586883B true CN110586883B (en) | 2020-09-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706734A (en) * | 1985-02-21 | 1987-11-17 | Gus Sevastakis | Continuous casting of strips or bars |
| CN1020074C (en) * | 1989-11-30 | 1993-03-17 | 昭和电线电缆株式会社 | Electromagnetic levitation type continuous metal casting apparatus |
| CN1161662A (en) * | 1994-09-20 | 1997-10-08 | 美国铝公司 | Apparatus and method for the vertical casting of a metal bar |
| CN1392008A (en) * | 2002-08-02 | 2003-01-22 | 黄国兴 | Electromagnetic casting method for aluminium-1% silicon fine wire masterbatch for integrated circuit linkage |
| CN101181739A (en) * | 2007-10-26 | 2008-05-21 | 上海大学 | Method for composite electromagnetic continuous-casting high-oriented ultra-fine grained materials |
| CN105081248A (en) * | 2015-09-18 | 2015-11-25 | 成都智齐科技有限公司 | High-speed mechanical stirring power-up magnetic suspension continuous casting device |
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