CN202316942U - On-line heating device for continuously-cast large round blank - Google Patents
On-line heating device for continuously-cast large round blank Download PDFInfo
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- CN202316942U CN202316942U CN2011204223689U CN201120422368U CN202316942U CN 202316942 U CN202316942 U CN 202316942U CN 2011204223689 U CN2011204223689 U CN 2011204223689U CN 201120422368 U CN201120422368 U CN 201120422368U CN 202316942 U CN202316942 U CN 202316942U
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- large round
- continuous casting
- round billet
- casting large
- iron core
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Abstract
The utility model discloses an on-line heating device for a continuously-cast large round blank. The device comprises heating modules arranged on the continuously-cast large round blank, wherein each heating module comprises an arc-shaped iron core, an induction coil wound on the iron core and an alternating current power supply connected with two ends of the induction coil; and the iron core is close to the continuously-cast large round blank from an inner arc side and encircles the inner arc side above the continuously-cast large round blank. According to the device, an induction heating mode is adopted; eddy current is generated in the cast blank; and the inner arc side of the large round blank is heated on line through Joule heat produced by the eddy current, and heat is not transmitted from outside to inside. Therefore, the utility model has the advantages that: the heating efficiency is high, and the temperature raising speed is high; the on-line heating device is easy to control, and a continuous or intermittent heating mode can be adopted according to requirements; the heating intensity can be controlled by changing the current magnitude; the device is free from smoke-dust pollution; and a power frequency power supply is adopted without frequency conversion treatment, so the investment cost is low.
Description
Technical field
The utility model relates to technical field of steel production, the equipment that uses in particularly a kind of continuous casting large round billet aligning operation.
Background technology
The mechanical behavior under high temperature of steel and the crackle of continuous casting billet have direct relation.As can beappreciated from fig. 1, when temperature was lower than 900 ℃, the plasticity of steel obviously descended.Therefore in continuous casting was produced, the general casting blank surface temperature in aligning district that requires must be greater than 900 ℃, to avoid the generation of crackle.
In the large round billet continuous casting is produced, because pulling rate is lower, the strand overstand; Cause strand low excessively in the surface temperature in aligning district, strand is easy to generate crackle, and prior art is to be employed between fan-shaped section and the straightening machine of continuous casting large round billet stay-warm case is set; But effect is still undesirable, continuous casting large round billet surface temperature distribution figure when Fig. 2 is incubated for adopting stay-warm case, as can be seen from the figure; Diameter be the large round billet of 700mm when casting speed is 0.2m/s, the surface temperature in its aligning district is starkly lower than 900 ℃ between 700 ℃-800 ℃; Because the inner arc side surface will produce extensional in the aligning process, so face crack appears in inner arc side easily.
Therefore, need to explore a kind of in the aligning district device of rising continuous casting large round billet inner arc side temperature, to reduce strand cracks defective in the aligning process risk.
The utility model content
In view of this, the utility model provides a kind of continuous casting large round billet online heater, and this device passes through eddy-current heating; Reach and improve aligning district continuous casting large round billet inner arc side temperature; Reduce the purpose that cracks the defective risk, simultaneously, also have the high advantage of the efficiency of heating surface.
The online heater of continuous casting large round billet of the utility model; Comprise the heating module that is arranged on the continuous casting large round billet; Said heating module comprises arc-shaped iron core, is wound in induction coil and the AC power that is connected with the induction coil two ends on the iron core, said iron core from the inner arc side near the continuous casting large round billet and the inner arc side of surrounding continuous casting large round billet the preceding paragraph.
Further, the wire harness of said induction coil is wound on the iron core with the helix tube winding configuration;
Further, on the intrados of said iron core convexity is set, the wire harness of said induction coil turns to the back-shaped spiral of cambered surface around intrados protruding and that be close to iron core;
Further, the wire harness of said induction coil is a hollow copper pipe;
Further, the cross section of said copper pipe is a rectangle;
Further, also comprise the arc heat shield, said heat shield is between induction coil and continuous casting large round billet;
Further, said heat shield is the austenitic stainless steel thin plate that thickness is not more than 5mm;
Further, said AC power is a power frequency supply;
Further, said iron core is processed by the silicon steel sheet of mutually insulated is superimposed;
Further, said heating module is a plurality of, a plurality of heating modules be arranged between the straightening machine that is used to align the continuous casting large round billet respectively and/or be positioned at the straightening machine before continuous casting large round billet fan-shaped section.
The beneficial effect of the utility model: the online heater of continuous casting large round billet of the utility model; Comprise the heating module that is arranged on the continuous casting large round billet, said heating module comprises arc-shaped iron core, is wound in induction coil and the AC power that is connected with the induction coil two ends on the iron core, said iron core from the inner arc side near the continuous casting large round billet and the inner arc side of surrounding continuous casting large round billet the preceding paragraph; Adopt induction heating mode; Evoke eddy current in strand inside, rely on eddy current to produce Joule heat large round billet inner arc side is carried out online heating, rather than heat is transmitted from outside to inside; Have efficiency of heating surface height, programming rate is fast; Control is simple, can adopt continous way or batch (-type) mode of heating as required; Can be through changing size of current control heating intensity; No smoke contamination; Advantages such as the employing power frequency supply need not frequency-conversion processing, and cost of investment is low.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described;
Fig. 1 is the high temperature ductility of steel and the graph of a relation of temperature;
Fig. 2 is continuous casting large round billet surface temperature distribution figure;
Fig. 3 is the typical scheme of installation of the utility model on the large round billet conticaster;
Fig. 4 is the I place partial enlarged drawing of Fig. 3;
Fig. 5 representes the A-A cutaway view of Fig. 4 when induction coil is the helix tube winding configuration;
Fig. 6 is the B-B cutaway view of Fig. 5;
Fig. 7 representes the A-A cutaway view of Fig. 4 when induction coil is the back-shaped spiral winding configuration of cambered surface;
Fig. 8 is the C-C cutaway view of Fig. 7;
Fig. 9 is the back-shaped spiral winding configuration of the cambered surface of an induction coil sketch map.
The specific embodiment
Below will combine accompanying drawing that the utility model is elaborated: the online heater of continuous casting large round billet of present embodiment; Comprise the heating module 2 that is arranged on the continuous casting large round billet 1; Said heating module 2 comprises arc-shaped iron core 3, is wound in induction coil 4 and the AC power 5 that is connected with induction coil 4 two ends on the iron core 3, and near the continuous casting large round billet 1 and the inner arc side of surrounding continuous casting large round billet 1 the preceding paragraph, promptly arc-shaped iron core is " C " font to said iron core 3 from the inner arc side; The openend of " C " font is enclosed in the inner arc side of continuous casting large round billet 1; " near " show between induction coil and the continuous casting large round billet and do not contact, utilize the inner arc side heating of magnetic field induction, for this device to large round billet; Also can realize the control of mode of heating and heating intensity through each heating module of controller control.
The wire harness of said induction coil 4 is wound on the iron core 3 with the helix tube winding configuration, and the helix tube winding is convenient to make; In addition; Coiling also can be adopted following form: protruding 3a is set on the intrados of said iron core 3; The wire harness of said induction coil 4 turns to the back-shaped spiral of cambered surface around protruding 3a and the intrados of being close to iron core 3; This winding mode can make induction coil more near the continuous casting large round billet, improves the efficiency of heating surface.
Further improvement as technique scheme; The wire harness of said induction coil 4 is a hollow copper pipe, because induction coil is near heated continuous casting large round billet, operating ambient temperature is higher; Can cool off through in copper pipe, feeding cooling water, avoid induction coil because high temperature and impaired.
As the further improvement of technique scheme, the cross section of said copper pipe is a rectangle.Compare with circular copper pipe, the every circle of rectangle copper pipe can be coupled more magnetic flux to strand, and the efficiency of heating surface is higher.
Further improvement as technique scheme also comprises arc heat shield 6, and said heat shield 6 is between induction coil 4 and continuous casting large round billet 1; Curved baffle is selected the low and resistant to elevated temperatures material of magnetic conductivity for use; Stop radiant heat, reduce heat loss, protect heating module simultaneously from the high temperature strand.
As the further improvement of technique scheme, said heat shield 6 is not more than the austenitic stainless steel thin plate of 5mm for thickness, and this material has lower magnetic conductivity and good high-temperature stability; Simultaneously; The thinner thickness of plate can make the as close as possible strand of coil, improves the efficiency of heating surface.
As the further improvement of technique scheme, said AC power 5 is a power frequency supply, need not frequency-conversion processing, can practice thrift equipment investment, reduces manufacturing cost.
As the further improvement of technique scheme, said iron core 3 is processed by the silicon steel sheet of mutually insulated is superimposed, can increase the inductance value of induction coil, makes through the magnetic field of strand byer force, improves the efficiency of heating surface.
As the further improvement of technique scheme, said heating module is a plurality of, a plurality of heating modules be arranged between the straightening machine 7 that is used to align the continuous casting large round billet respectively and/or be positioned at straightening machine 7 before continuous casting large round billet fan-shaped section.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (10)
1. online heater of continuous casting large round billet; Comprise the heating module (2) that is arranged on the continuous casting large round billet (1); It is characterized in that: said heating module (2) comprises arc-shaped iron core (3), is wound in induction coil (4) and the AC power (5) that is connected with induction coil (4) two ends on the iron core (3), said iron core (3) from the inner arc side near the continuous casting large round billet (1) and the inner arc side of surrounding continuous casting large round billet (1) the preceding paragraph.
2. the online heater of continuous casting large round billet according to claim 1 is characterized in that: the wire harness of said induction coil (4) is wound on the iron core (3) with the helix tube winding configuration.
3. the online heater of continuous casting large round billet according to claim 1; It is characterized in that: convexity (3a) is set on the intrados of said iron core (3), and the wire harness of said induction coil (4) turns to the back-shaped spiral of cambered surface around protruding (3a) and the intrados of being close to iron core (3).
4. according to claim 2 or the online heater of 3 described continuous casting large round billet, it is characterized in that: the wire harness of said induction coil (4) is a hollow copper pipe.
5. the online heater of continuous casting large round billet according to claim 4 is characterized in that: the cross section of said copper pipe is a rectangle.
6. the online heater of continuous casting large round billet according to claim 5 is characterized in that: also comprise arc heat shield (6), said heat shield (6) is positioned between induction coil (4) and the continuous casting large round billet (1).
7. the online heater of continuous casting large round billet according to claim 6 is characterized in that: said heat shield (6) is not more than the austenitic stainless steel thin plate of 5mm for thickness.
8. the online heater of continuous casting large round billet according to claim 7 is characterized in that: said AC power (5) is a power frequency supply.
9. the online heater of continuous casting large round billet according to claim 8 is characterized in that: said iron core (3) is processed by the silicon steel sheet of mutually insulated is superimposed.
10. the online heater of continuous casting large round billet according to claim 9; It is characterized in that: said heating module (2) is for a plurality of, and a plurality of heating modules (2) are arranged between the straightening machine (7) that is used to align continuous casting large round billet (1) respectively and/or are positioned at the preceding continuous casting large round billet fan-shaped section of straightening machine (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204223689U CN202316942U (en) | 2011-10-31 | 2011-10-31 | On-line heating device for continuously-cast large round blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204223689U CN202316942U (en) | 2011-10-31 | 2011-10-31 | On-line heating device for continuously-cast large round blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202316942U true CN202316942U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204223689U Expired - Fee Related CN202316942U (en) | 2011-10-31 | 2011-10-31 | On-line heating device for continuously-cast large round blank |
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| CN (1) | CN202316942U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350488A (en) * | 2011-10-31 | 2012-02-15 | 中冶赛迪工程技术股份有限公司 | Online heating device for continuous casting round bloom |
| CN103196412A (en) * | 2013-02-26 | 2013-07-10 | 中冶南方工程技术有限公司 | Monitor system for round casting blank surface indentation and non-circularity |
| CN104525886A (en) * | 2015-01-27 | 2015-04-22 | 上海东震冶金工程技术有限公司 | Method for improving crack defects of edges and corners of casting blank |
| CN106475539A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | Device and method for reducing corner cracks of casting blank |
| CN106475540A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | Device for reducing corner crack of casting blank by flame heating and crack reducing method |
| CN106938324A (en) * | 2016-01-05 | 2017-07-11 | 鞍钢股份有限公司 | Device and method for reducing corner cracks of microalloyed slab |
| CN108723316A (en) * | 2018-08-30 | 2018-11-02 | 湖南中科电气股份有限公司 | A kind of continuous casting end has the electromagnetic stirring system of heating function |
| CN109338223A (en) * | 2018-11-09 | 2019-02-15 | 鞍钢股份有限公司 | Process method for improving surface quality and performance of silicon steel product |
| CN111940690A (en) * | 2020-07-27 | 2020-11-17 | 辽宁科技大学 | Electromagnetic feeding control method for large-section casting blank continuous casting process |
-
2011
- 2011-10-31 CN CN2011204223689U patent/CN202316942U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350488A (en) * | 2011-10-31 | 2012-02-15 | 中冶赛迪工程技术股份有限公司 | Online heating device for continuous casting round bloom |
| CN103196412A (en) * | 2013-02-26 | 2013-07-10 | 中冶南方工程技术有限公司 | Monitor system for round casting blank surface indentation and non-circularity |
| CN103196412B (en) * | 2013-02-26 | 2016-03-30 | 中冶南方工程技术有限公司 | A kind of circle casting billet surface impression and out-of-roundness monitoring system |
| CN104525886A (en) * | 2015-01-27 | 2015-04-22 | 上海东震冶金工程技术有限公司 | Method for improving crack defects of edges and corners of casting blank |
| CN106475539A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | Device and method for reducing corner cracks of casting blank |
| CN106475540A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | Device for reducing corner crack of casting blank by flame heating and crack reducing method |
| CN106938324A (en) * | 2016-01-05 | 2017-07-11 | 鞍钢股份有限公司 | Device and method for reducing corner cracks of microalloyed slab |
| CN106938324B (en) * | 2016-01-05 | 2019-02-26 | 鞍钢股份有限公司 | Device and method for reducing corner cracks of microalloyed slab |
| CN108723316A (en) * | 2018-08-30 | 2018-11-02 | 湖南中科电气股份有限公司 | A kind of continuous casting end has the electromagnetic stirring system of heating function |
| CN108723316B (en) * | 2018-08-30 | 2024-01-30 | 湖南中科电气股份有限公司 | Electromagnetic stirring system with heating function at continuous casting tail end |
| CN109338223A (en) * | 2018-11-09 | 2019-02-15 | 鞍钢股份有限公司 | Process method for improving surface quality and performance of silicon steel product |
| CN109338223B (en) * | 2018-11-09 | 2021-04-02 | 鞍钢股份有限公司 | Process method for improving surface quality and performance of silicon steel product |
| CN111940690A (en) * | 2020-07-27 | 2020-11-17 | 辽宁科技大学 | Electromagnetic feeding control method for large-section casting blank continuous casting process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141031 |
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| EXPY | Termination of patent right or utility model |