CN2650907Y - Crystallizer for continuous casting billets without vibratory defects - Google Patents
Crystallizer for continuous casting billets without vibratory defects Download PDFInfo
- Publication number
- CN2650907Y CN2650907Y CN 03279682 CN03279682U CN2650907Y CN 2650907 Y CN2650907 Y CN 2650907Y CN 03279682 CN03279682 CN 03279682 CN 03279682 U CN03279682 U CN 03279682U CN 2650907 Y CN2650907 Y CN 2650907Y
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- cooling
- nail
- continuous casting
- mold
- cast mold
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Abstract
The utility model belongs to the technical field for the manufacturing of continuous casting equipment, which can be best applied for mold in manufacturing of square billet, slab billet, round billet without vibration mark. The mold device is characterized in that: a cooling nail is distributed on a cooling section at the upper section of the internal wall of the mold for continuous casting according to the design; the height of the cooling nail is 2-15mm; the space between cooling nails are no less than 5mm; the upper section of the cooling section is 50-150mm from the upper section of the mold; the lower section of the cooling section is not less than 200mm from the lower section of the mold; the cooling nail can be arranged with uneven distribution and different height according to the design requirements. Compared with existing art, the utility model has the advantages of simple and feasible structure, little investment on the innovation of mold and continuous improvement of continuous casting billet products.
Description
Affiliated field
The utility model device belongs to the manufacturing field of continuous casting installation for casting.Be particularly useful for making the continuous casting installation for casting crystallizer of no oscillation mark square billet, slab, circle base.
Background technology
In the prior art, the copper pipe of continuous casting installation for casting crystallizer or copper coin normally are designed to straight shape or arc, because the initial solidification shell that forms in the meniscus place when molten steel solidifies in crystallizer, part surface at continuous casting billet produces defective easily, as oscillation mark, pore, subcutaneous slag inclusion etc. and some internal flaws, the inner phenomenons such as rolling up slag that forms of product, the problems referred to above all easily occur in meniscus surface area.In order to control the stability of continuous casting casting liquid level, developed country is also at the electromagnetic brake technology of Devoting Major Efforts To Developing continuous cast mold at present; By utilizing the hot top of crystallizer technology to reduce the degree of depth of oscillation mark; Increase equiaxial crystal ratio and reduce component segregation with the employing electromagnetic agitating technology.All these is in order to remedy the deficiency of present mold structure, but adopts the result of these technology can not only increase production cost, and the result of use in actual production is also not bery desirable.
Goal of the invention and content
The purpose of the utility model device is that proposition is a kind of simple and reasonable for structure, and manufacturing expense is few, and can improve the mould assembly of properties of product and the no oscillation mark continuous casting billet of production effectively.
The continuous casting crystallizer device that proposes according to the utility model, the scheme of existing problem is in its operation principle and the solution prior art, meniscus surface area is designed with several cooling nails in crystallizer, and they and crystallizer link for whole, has increased like this film-cooled heat of crystallizer; Because acceleration condensation, the forming core crystallization to liquation in crystallizer of cooling nail arranged, make liquation stream form initial liquid-solid phase along slit between the cooling nail, their heights differ, crystallization direction is disorderly and unsystematic, but combine as a whole again in a flash at certain, when mold oscillation, because the base shell produces relative motion with cooling nail, so that initial scull that should the zone and crystal torn up and become numerous small crystals and be free in the liquation, again dissolved or become nucleus; Along with the frequent vibration of crystallizer, meniscus cools off the nail zone and is difficult for forming initial scull, by the degree of superheat of reduction liquation, can effectively provide a large amount of free nucleus, provides the cold-peace crystallization condition for the regional lower edge of cooling nail forms initial scull; This accelerated solidification pattern makes the initial solidification shell result from band lower edge, cooling nail zone, avoided thus traditional sickle shaped meniscus so that continuous casting billet produces the phenomenon of oscillation mark, and because the existence of a large amount of nucleus, equiaxial crystal ratio will improve, and be conducive to improve internal defect and the component segregation of continuous casting billet.Introduction according to above content, we can describe the concrete structure of this continuous cast mold 1 device with reference to the accompanying drawings in detail, it is that cooling nail 2 is arranged on continuous cast mold 1 internal face with the composition of mould assembly that the utility model production does not have the oscillation mark continuous casting billet, cooling section 3 places that it is characterized in that continuous cast mold 1 internal face top are distributed with cooling nail 2 by designing requirement, the height of cooling nail 2 is 2-15mm, spacing 〉=5mm between each cooling nail 2, the last end distance continuous cast mold 1 upper end spacing of cooling section 3 is 50-150mm, and the following end distance continuous cast mold 1 lower end spacing of cooling section 3 is answered 〉=200mm.Other features of this device also have the cooling nail 2 of the cooling section 3 places design on continuous cast mold 1 internal face for evenly distributing.The height of the cooling section 3 places design cooling nail 2 on continuous cast mold 1 internal face is all identical.In order to make continuous cast mold 1 be more suitable for the use of specific (special) requirements, also the nail of the cooling on continuous cast mold 1 internal face 2 can be designed to different height.Be uneven distribution with the cooling at cooling section 3 places on continuous cast mold 1 internal face nail 2 according to designing requirement.Narrate with reference to the accompanying drawings below the course of work of the utility model device, from accompanying drawing, can see, when liquation self-thermo furnace packet flow enters continuous cast mold 1 when interior, on 3 of the cooling sections at continuous cast mold 1 inwall place, cooling nail 2 plays the effect of important fast solidifying cooling, because cooling nail 2 has lower temperature and the effect of fast cooling, therefore generate partly scull or the crystallization of liquation at cooling section 3 places, along with liquation stream constantly injects, wash away the vibration continuous with continuous cast mold 1, be easy to rush initial scull or crystalline solid broken and be free in the liquation, because this broken grain 4 has very strong uniform decrease in temperature effect, make liquation by cooling section 3 and after 2 effects of cooling nail, just very strong mistake cold energy and recrystallization accumulated energy have been gathered, therefore when molten metal bath installs by the utility model continuous cast mold 1, continuous shaking through cooling section 3 interior cooling nail 2 fast solidifying coolings and this crystallizer 1, the equiaxial crystal ratio that forms in the continuous casting billet is significantly improved, and also avoid producing continuous casting billet oscillation mark phenomenon, be beneficial to the internal defect and the component segregation that improve continuous casting billet.In addition also can be according to the serviceability requirement of production continuous casting billet, cooling nail 2 in this continuous cast mold 1 device in the cooling section 3, can also be designed to the cooling nail 2 of not equal altitude and difformity, quantity, so not only can satisfy the preparation of the continuous casting billet of inhomogeneity shape, and can also effectively control the throughput rate of continuous casting billet and dwindle the liquid-solid-phase changeable district of motlten metal, this is very important to continuous casting technology.
Adopt the utility model continuous casting crystallizer device compared with prior art, have simple and reasonable for structurely, crystallizer investment for trnasforming urban land is few and improve characteristics such as continuous casting billet product defects effectively.The utility model device can also improve the cooling velocity in the continuous casting crystallining in process of production in addition, increase and solidify nucleation rate, eliminate the degree of superheat of initial solidification part, can effectively improve equiaxial crystal ratio, eliminate oscillation mark on CC strand surface, reduce component segregation and simple to operate.
Description of drawings
The utility model device accompanying drawing is used the partial structure work schematic diagram of crystallizer for producing no oscillation mark continuous casting billet; In the accompanying drawings: 1 is continuous cast mold 1; 2 cooling nails; 3 is cooling section; 4 is broken grain.
Claims (5)
1, a kind of production does not have oscillation mark continuous casting billet mould assembly, the composition of this device is that cooling nail (2) is arranged on continuous cast mold (1) internal face, the cooling section (3) that it is characterized in that continuous cast mold (1) internal face top is located to be distributed with cooling nail (2) by designing requirement, the height of cooling nail (2) is 2-15mm, spacing 〉=5mm between each cooling nail (2), last end distance continuous cast mold (1) the upper end spacing of cooling section (3) is 50-150mm, and following end distance continuous cast mold (1) the lower end spacing of cooling section (3) is answered 〉=200mm.
2, described production does not have oscillation mark continuous casting billet crystallization apparatus according to claim 1, and its feature also has the cooling nail (2) of cooling section (3) the place design on continuous cast mold (1) internal face for evenly distributing.
3, described production does not have oscillation mark continuous casting billet crystallization apparatus according to claim 1, it is characterized in that the height of cooling section (3) the place design cooling nail (2) on continuous cast mold (1) internal face is all identical.
4, described production does not have oscillation mark continuous casting billet crystallization apparatus according to claim 1, it is characterized in that the cooling nail (2) that the cooling section (3) on continuous cast mold (1) internal face is located is a uneven distribution according to designing requirement.
5, described production does not have oscillation mark continuous casting billet crystallization apparatus according to claim 1, it is characterized in that the cooling nail (2) on continuous cast mold (1) internal face is designed to different height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279682 CN2650907Y (en) | 2003-09-16 | 2003-09-16 | Crystallizer for continuous casting billets without vibratory defects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279682 CN2650907Y (en) | 2003-09-16 | 2003-09-16 | Crystallizer for continuous casting billets without vibratory defects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650907Y true CN2650907Y (en) | 2004-10-27 |
Family
ID=34332370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03279682 Expired - Fee Related CN2650907Y (en) | 2003-09-16 | 2003-09-16 | Crystallizer for continuous casting billets without vibratory defects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650907Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252879A (en) * | 2017-06-13 | 2017-10-17 | 东北大学 | Improve the method for continuous casting slab quality using the nailing for carrying nucleating agent secretly |
| CN110116193A (en) * | 2019-05-06 | 2019-08-13 | 中南大学 | A kind of round mold and continuous casting installation for casting, continuous cast round billets oscillation mark suppressing method |
| CN110125346A (en) * | 2019-05-06 | 2019-08-16 | 江西理工大学 | A kind of plate slab crystallizer and continuous casting installation for casting, continuous casting steel billet oscillation mark suppressing method |
-
2003
- 2003-09-16 CN CN 03279682 patent/CN2650907Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252879A (en) * | 2017-06-13 | 2017-10-17 | 东北大学 | Improve the method for continuous casting slab quality using the nailing for carrying nucleating agent secretly |
| CN110116193A (en) * | 2019-05-06 | 2019-08-13 | 中南大学 | A kind of round mold and continuous casting installation for casting, continuous cast round billets oscillation mark suppressing method |
| CN110125346A (en) * | 2019-05-06 | 2019-08-16 | 江西理工大学 | A kind of plate slab crystallizer and continuous casting installation for casting, continuous casting steel billet oscillation mark suppressing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |