CN2724883Y - Internal and external compound cooling high effect continuous casting mould - Google Patents
Internal and external compound cooling high effect continuous casting mould Download PDFInfo
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- CN2724883Y CN2724883Y CN 200420016771 CN200420016771U CN2724883Y CN 2724883 Y CN2724883 Y CN 2724883Y CN 200420016771 CN200420016771 CN 200420016771 CN 200420016771 U CN200420016771 U CN 200420016771U CN 2724883 Y CN2724883 Y CN 2724883Y
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Abstract
The utility model provides an internal and external compound cooling high effect continuous casting mould, and the utility model relates to a continuous casting mould. The solidification is provided, the air gap can be necessarily formed. The form of the air gap makes the thermal conduction of the mould reduced obviously. The air gap in existence is an indispensable condition that a casting blank can be favourably pulled out of the mould again. How to solve the contradictory that the heat transmission resistance of the air gap is reduced (approximately occupies 80% total thermal resistance), but the air gap is not admitted to kill off again becomes the difficult problem of the field. Aiming at the existing problem in the prior art, the utility model provides an internal and external compound cooling high effect continuous casting mould. Namely an internal cooling device is provided in the existing mould. The utility model circles the air gap, and the utility model leads out the heat of the liquid steel. Not only the utility model increases the heat transmission efficiency of the mould, but also the utility model has the advantages that the utility model refines the central tissue of the casting blank, and the utility model increases the equiax crystal rate of the casting blank centre, and the utility model improves the quality of the casting blank, etc.
Description
Technical field
The utility model relates to continuous casting of metal equipment, particularly a kind of high efficiency continuous casting crystallizer.
Background technology
The pilot development that the continuous casting steel machine technology has experienced the forties in 20th century, the fifties industrial production, the sixties circular-arc type continuous casting machine appearance, the great development of the seventies, the eighties, technology reached its maturity and the course of the new change nineties.The high-efficient continuous casting technology that the middle and later periods eighties 20th century grows up is to be core with high pulling rate, based on high-quality, the production of high temperature zero defect base, realize high connect water, the continuous casting system technology of high operating rate, be the developing direction that contemporary continuous casting is produced.Crystallizer is high efficiency continuous casting machine " heart ".Molten steel was derived heat by crystallizer wall after injecting crystallizer, began immediately to solidify.The base shell and the crystallizer wall that just congeal into have good the contact, base shell progressive additive, and, base shell and crystallizer wall are broken away from temperature reduction and contraction gradually, form air gap.The formation of air gap obviously descends the heat conduction of crystallizer.How reducing the air gap that produces owing to the molten steel solidification contraction in the crystallizer is to improve the most key technology of heat transfer efficiency.
" have and solidify the formation that just must have air gap ", and the existence of air gap is the necessary condition that strand can be pulled out crystallizer smoothly.How to solve " both reduced the heat transmission resistance (account for entire thermal resistance 80%) of air gap, but do not allowed an air gap to eliminate fully " this sharp-pointed contradiction, become the technical barrier of this area.
In the prior art, people pursue simply and reduce the air gap that produces owing to the molten steel solidification contraction in the crystallizer, improve heat transfer efficiency, realize the target of high efficiency continuous casting.Relevant research comprises:
(1) De Make company parabola taper crystallizer
The good fit of crystallizer internal cavity shape and casting blank outer cover shape can reduce even avoid air gap, to reach best heat-transfer effect.In order to adapt to shrinking naturally of strand, crystallizer internal cavity is designed to parabolic shape.Moral mark company has carried out the test of parabola taper crystallizer.
(2) CCT of Comcast company crystallizer
Switzerland CONCAST company has developed a kind of convex crystallizer (CCT), and formed strand nonreentrant surface shrinks the nature change directly because of cooling in the convex crystallizer, and the contradiction between convergent force and the ferrostatic pressure is because of the change Lock-out of mold shape.The change of convex crystallizer peripheric geometric shapes reduces the air gap between base shell and crystallizer, and pyroconductivity increases.
(3) DANAM of Danieli Off Mecc crystallizer
Italy DANIELI company has developed a kind of self adaptation crystallizer (being called for short DANAM), the core of technology is that so-called back draught can be regulated crystallizer, can make its initial back draught adapt to the contraction of base shell in the liquid steel process of setting by the hydraulic pressure of regulating in the crystallizer water seam, thereby can adapt to different solidification materials, make from meniscus to the air gap minimum between crystallizer wall the crystallizer end opening and base shell.
At present, what China extensively adopted is tube type mold, generally by outer cover, and compositions such as inner water sleeve, copper pipe, outer water jacket, feed pipe, drainpipe, sufficient roller.At the outside of copper pipe suit steel inner water sleeve, make it to form cooling-water duct (water seam), utilize dividing plate and outer water jacket to link, and form two hydroeciums up and down, utilizing up and down, two flanges compress copper pipe.Cooling water enters lower header from feed pipe, and the water of flowing through seam passage enters upper tank, discharges from drainpipe.
The content of utility model
The purpose of this utility model is the problem at the existence of prior art, a kind of inside and outside compound cooling high efficiency continuous casting crystallizer is provided, it is based on compound cooling principle inside and outside a kind of brand-new, molten steel in mold, walking around air gap derives the heat of molten steel, is to improve the effective high efficiency continuous casting crystallizer of heat transfer efficiency.
To achieve these goals, the utility model has been taked following technical scheme:
A kind of inside and outside compound cooling high efficiency continuous casting crystallizer, comprising: water jacket, Cu crystallizer is characterized in that being provided with in the Cu crystallizer intercooler.
The intercooler that is provided with in the crystallizer is a kind of heat-resistant tube that passes to cooling circulation liquid that is deep into from the Cu crystallizer top the molten steel.
A kind of heat-resistant tube that passes to cooling circulation liquid that is deep into the molten steel from the Cu crystallizer top is a kind of U-shaped heat-resistant tube, also can be a kind of W shape heat-resistant tube, can also be the heat-resistant tube of other shape.
The utility model compared with prior art has the following advantages and beneficial effect:
1) owing in original crystallizer, be provided with the tubular type intercooler that passes to cooling circulation liquid, can walk around air gap the heat of molten steel is derived, improve heat transfer efficiency.Therefore, changed people and pursued the air gap that produces owing to the molten steel solidification contraction in the minimizing crystallizer simply, improved the traditional thinking mode of heat transfer efficiency, provide a kind of inside and outside compound cooling principle completely newly for realizing high efficiency continuous casting.Compound cooler crystallizer inside and outside a kind of molten steel of high heat transfer efficient is provided for iron and steel metallurgy enterprise.
2). people improve the center equiaxial crystal ratio, but can bring new oxide into by feeding iron wire, adding iron sand refinement continuous casting billet structure at present.The utility model utilizes the solid phase of solidifying around the intercooler following washing away strongly of follow-up pouring liquid metal according to " theory of raining " in the casting process crystallization theory, enters crystallizer with the pouring liquid metal, becomes optimal external crystallization nuclei.As long as because liquid metal has one and is less than or equal to dynamics degree of supercooling (being generally about 0.1 ℃), process of setting just can begin, so interior cooling crystallizer helps the raising of center equiaxial crystal ratio, strand center equiaxial crystal ratio improves in refinement central tissue.
3) can walk around the air gap that accounts for 80% thermal resistance based on intercooler, quicken the reason of diabatic process and quickening crystallization process, intercooler certainly will increase the setting rate of continuous casting billet, can improve casting speed, realizes high efficiency continuous casting; Under the constant condition of casting speed, the increase of solidified layer thickness can reduce the bleedout rate.
4) intercooler hinders the impact depth of liquid metal, plays the effect of electromagnetic braking, helps the come-up of impurity, bubble, improves the quality of strand.
Description of drawings
Fig. 1 is a kind of inside and outside compound cooling high efficiency continuous casting structure of mould schematic diagram (front view) that is used for billet continuous casting " U " shape intercooler;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is a kind of inside and outside compound cooling high efficiency continuous casting structure of mould schematic diagram (front view) that is used for sheet billet continuous casting " U " shape intercooler;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the inside and outside compound cooling high efficiency continuous casting structure of mould schematic diagram (front view) of a kind of " W " shape intercooler;
Fig. 6 is the vertical view of Fig. 5.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present utility model is further described by embodiment:
As shown in Figure 1, 2, a kind of inside and outside compound cooling high efficiency continuous casting crystallizer, comprise: water jacket 1, cooling water seam 2, Cu crystallizer 3, the intercooler 4 that is provided with in its Cu crystallizer 3 is a kind of U-shaped heat-resistant tubes that pass to cooling circulation liquid that are deep into from the Cu crystallizer top the molten steel 5.
A kind of U-shaped heat-resistant tube that passes to cooling circulation liquid can be provided with 2 symmetrically.
The U-shaped pipe can be a kind of thick-wall red copper pipe, also can be titanium pipe, Ti-Ni alloy pipe, goes back other metal tube.
Shown in Fig. 3,4, a kind of inside and outside compound cooling high efficiency continuous casting crystallizer, comprise: water jacket 1, cooling-water duct 2, Cu crystallizer 3, the intercooler 4 that is provided with in its Cu crystallizer 3 is a kind of U-shaped heat-resistant tubes that pass to cooling circulation liquid that are deep into from the Cu crystallizer top the molten steel 5.
A kind of U-shaped heat-resistant tube that passes to cooling circulation liquid is provided with 2 at least symmetrically.
The U-shaped pipe can be a kind of thick-wall red copper pipe, also can be titanium pipe, Ti-Ni alloy pipe, goes back other metal tube.
Shown in Fig. 5,6, a kind of inside and outside compound cooling high efficiency continuous casting crystallizer, comprise: water jacket 1, cooling-water duct 2, Cu crystallizer 3, the intercooler 4 that is provided with in its Cu crystallizer 3 is a kind of W shape heat-resistant tubes that pass to cooling circulation liquid that are deep into from the Cu crystallizer top the molten steel 5.
A kind of W shape heat-resistant tube that passes to cooling circulation liquid is provided with 2 at least symmetrically.
W shape pipe can be a kind of thick-wall red copper pipe, also can be titanium pipe, Ti-Ni alloy pipe, goes back other metal tube.
Claims (4)
1, a kind of inside and outside compound cooling high efficiency continuous casting crystallizer comprises: water jacket (1), cooling water seam (2), Cu crystallizer (3) is characterized in that being provided with in the Cu crystallizer (3) intercooler (4).
2, according to the described inside and outside compound cooling high efficiency continuous casting crystallizer of claim 1, it is characterized in that the intercooler (4) of setting in the Cu crystallizer (3), be a kind of heat-resistant tube that passes to cooling circulation liquid that is deep into from the Cu crystallizer top the molten steel (5).
3, according to the described inside and outside compound cooling high efficiency continuous casting crystallizer of claim 2, it is characterized in that a kind of heat-resistant tube that passes to cooling circulation liquid that is deep into the molten steel (5) from Cu crystallizer (3) top is a kind of U-shaped heat-resistant tube.
4, according to the described inside and outside compound cooling high efficiency continuous casting crystallizer of claim 2, it is characterized in that a kind of heat-resistant tube that passes to cooling circulation liquid that is deep into the molten steel (5) from Cu crystallizer (3) top is a kind of W shape heat-resistant tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016771 CN2724883Y (en) | 2004-09-07 | 2004-09-07 | Internal and external compound cooling high effect continuous casting mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016771 CN2724883Y (en) | 2004-09-07 | 2004-09-07 | Internal and external compound cooling high effect continuous casting mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2724883Y true CN2724883Y (en) | 2005-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420016771 Expired - Fee Related CN2724883Y (en) | 2004-09-07 | 2004-09-07 | Internal and external compound cooling high effect continuous casting mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2724883Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430732A (en) * | 2011-11-29 | 2012-05-02 | 东北大学 | Device and process for internal and external cooling continuous casting of magnesium alloy and aluminum alloy ingot blanks |
| CN106180604A (en) * | 2016-08-31 | 2016-12-07 | 山东钢铁股份有限公司 | A kind of mold structure, chiller and the cooling means within crystallizer |
| CN115821091A (en) * | 2022-12-14 | 2023-03-21 | 四川越创铝业有限公司 | Aluminum alloy preparation method and aluminum alloy casting device |
-
2004
- 2004-09-07 CN CN 200420016771 patent/CN2724883Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430732A (en) * | 2011-11-29 | 2012-05-02 | 东北大学 | Device and process for internal and external cooling continuous casting of magnesium alloy and aluminum alloy ingot blanks |
| CN102430732B (en) * | 2011-11-29 | 2013-09-11 | 东北大学 | Device and process for internal and external cooling continuous casting of magnesium alloy and aluminum alloy ingot blanks |
| CN106180604A (en) * | 2016-08-31 | 2016-12-07 | 山东钢铁股份有限公司 | A kind of mold structure, chiller and the cooling means within crystallizer |
| CN115821091A (en) * | 2022-12-14 | 2023-03-21 | 四川越创铝业有限公司 | Aluminum alloy preparation method and aluminum alloy casting device |
| CN115821091B (en) * | 2022-12-14 | 2024-02-06 | 四川越创铝业有限公司 | Aluminum alloy preparation method and aluminum alloy casting device |
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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 |