CN203556822U - Crystallizer for continuous casting - Google Patents
Crystallizer for continuous casting Download PDFInfo
- Publication number
- CN203556822U CN203556822U CN201320728527.7U CN201320728527U CN203556822U CN 203556822 U CN203556822 U CN 203556822U CN 201320728527 U CN201320728527 U CN 201320728527U CN 203556822 U CN203556822 U CN 203556822U
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- Prior art keywords
- copper coin
- circular arc
- wide
- crystallizer
- narrow
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Abstract
The utility model discloses a crystallizer for continuous casting. The crystallizer is formed by assembling two wide copper plates and two narrow copper plates together, the wide copper plates are opposite to the narrow copper plates, the inner surfaces of the narrow copper plates are in circular arc curved surface transition with the inner surfaces of the wide copper plates, the two ends of the narrow copper plates are provided with platforms, included angles between the end face platforms of the narrow copper plates and the wide copper plates are 90 degrees, the included angle alpha between a cooling water seam in the back side of the circular arc curved surface and the horizontal plane in the axial direction ranges from 81 degrees to 89 degrees, the platforms at the two ends of the narrow copper plates are 1-2 mm wide, the circular arc radius of the circular arc curved surface ranges from 120 mm to 160 mm, the chord length corresponding to the circular arc ranges from 18 mm to 21 mm, and the water seam is 25 mm-45 mm deep and 4 mm-10 mm wide. According to the arrangement, performance of the crystallizer for continuous casting is optimized.
Description
Technical field
The utility model relates to field of iron and steel smelting, is specifically related to the crystallizer in a kind of casting process.
Background technology
Crystallizer is the very important parts of conticaster.Molten steel is the cooling strand profile that is tentatively frozen into certain shell thickness in crystallizer, and from crystallizer end opening, is pulled out continuously, enters two cold-zones.The effect of crystallizer is: under certain pulling rate, guarantee that it is the base shell that forms adequate thickness that strand goes out crystallizer, make going on of casting process safety, and determined the production capacity of conticaster, simultaneously the molten steel in crystallizer by the conduction of heat balance to copper coin, periphery shell thickness can be grown uniformly, guarantee cc billet surface quality.Therefore continuous cast mold directly affects the quality of continuous casting billet and follow-up heat processing technique thereof.
Existing steel-making continuous casting crystallizer is comprised of four copper plate of crystallizer, wherein two broadsides, two narrow limits.The back side of copper plate of crystallizer is processed with tank, is used for leading to cooling water.Copper plate of crystallizer front is coated with the alloy layers such as chromium, nickel, dilval, nickel cobalt (alloy) and cobalt-nickel alloy.Four copper plate of crystallizer have formed the rectangle work inner chamber of crystallizer, and the thickness in rectangular inner cavity cross section is generally 50～250mm, and width is 500～2500mm.
The Si Ge angle, work inner chamber square-section of existing continuous cast mold is right angle, affects continuous casting billet quality and follow-up hot rolling processing characteristics, has following problem:
1. the heat transfer of crystallizer right angle portion is two dimension, starts to solidify the fastest, shrinks the earliest, forms the earliest air gap, and therefore folding corner region base shell is the thinnest, and therefore continuous casting billet bight is to produce corner crack and the weak link of bleed-out occurs.
2. slab goes out after continuous cast mold, enters secondary cooling zone, and when secondary intensity of cooling is excessive, bight cooling velocity is fast, can cause stress, strain to concentrate, and also easily causes corner crack.
3. the continuous casting covering slag at place, crystallizer bight is not enough to flowing between copper coin and base shell, and lubricant effect is poor, therefore easily causes surface quality of continuously cast slab defect and bleed-out.
4. the rectangular slab that cross section four limits are right angle is when Vertical Rolling is adjusted wide rolling, owing to adjusting wide drafts to seem very little compared with width of plate slab, distortion can not be penetrated into the central part of width of plate slab, only produce the areal deformation of slab side, make roughing intermediate blank limit portion that more sharp-pointed projection (dog bone shape section) occur, boss is under the impact of cooling water, temperature sharply declines, enter high temperature inductile district, when flat rolling subsequently, part occurs and tear, what show as hot rolling edges of boards portion surface sticks up skin defect.
Utility model content
The purpose of this utility model is to propose a kind of continuous cast mold;
For reaching this object, the utility model by the following technical solutions:
A kind of continuous cast mold, by two relatively wide copper coins narrow copper coin relative to two, fit together and form, narrow copper coin inner surface is circular arc camber to the transition of wide copper coin inner surface, narrow copper coin two ends are with platform, narrow copper coin end face platform and wide copper coin angle are 90 °, the back side cooling water seam of circular arc camber axially and horizontal plane angle α be 81-89 °; Narrow copper coin two ends berm width is 1-2mm; The arc radius of circular arc camber is 120-160mm, the corresponding chord length 18-21mm of circular arc; The water seam degree of depth is 25-45mm, water seam width 4-10mm; At each described wide copper coin back side, ultrasonic wave guided wave bar is installed respectively, described ultrasonic wave guided wave bar is connected with transducer, transducer is connected with ultrasonic power by cable, wide copper coin and narrow copper coin surrounding at described crystallizer are provided with cooling water tank, and described ultrasonic wave guided wave bar is connected with copper plate of crystallizer is vertical through cooling water tank.
As preferably, the material of described ultrasonic wave guided wave bar is almag or titanium alloy.
As preferably, the length of described ultrasonic wave guided wave bar is the integral multiple of ultrasonic wave wavelength or the integral multiple of half-wavelength adopting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model continuous cast mold;
Wherein: 1 is narrow copper plate of crystallizer, 2 is narrow copper coin planar section, and 3 is narrow copper coin circular arc camber, and 4 is narrow copper coin cuddy board, and 5 is narrow copper coin circular arc camber back side water seam.
The specific embodiment
A kind of continuous cast mold, by two relatively wide copper coins narrow copper coin relative to two, fit together and form, narrow copper coin inner surface is circular arc camber to the transition of wide copper coin inner surface, narrow copper coin two ends are with platform, narrow copper coin end face platform and wide copper coin angle are 90 °, the back side cooling water seam of circular arc camber axially and horizontal plane angle α be 88 °; Narrow copper coin two ends berm width is 1-2mm; The arc radius of circular arc camber is 126mm, the corresponding chord length 19mm of circular arc; The water seam degree of depth is 28mm, water seam width 8mm; At each described wide copper coin back side, ultrasonic wave guided wave bar is installed respectively, described ultrasonic wave guided wave bar is connected with transducer, transducer is connected with ultrasonic power by cable, wide copper coin and narrow copper coin surrounding at described crystallizer are provided with cooling water tank, and described ultrasonic wave guided wave bar is connected with copper plate of crystallizer is vertical through cooling water tank.The material of described ultrasonic wave guided wave bar is almag or titanium alloy.The length of described ultrasonic wave guided wave bar is the integral multiple of ultrasonic wave wavelength or the integral multiple of half-wavelength adopting.
Claims (3)
1. a continuous cast mold, by two relatively wide copper coins narrow copper coin relative to two, fit together and form, it is characterized in that: narrow copper coin inner surface is circular arc camber to the transition of wide copper coin inner surface, narrow copper coin two ends are with platform, narrow copper coin end face platform and wide copper coin angle are 90 °, the back side cooling water seam of circular arc camber axially and horizontal plane angle α be 81-89 °; Narrow copper coin two ends berm width is 1-2mm; The arc radius of circular arc camber is 120-160mm, the corresponding chord length 18-21mm of circular arc; The water seam degree of depth is 25-45mm, water seam width 4-10mm; At each described wide copper coin back side, ultrasonic wave guided wave bar is installed respectively, described ultrasonic wave guided wave bar is connected with transducer, transducer is connected with ultrasonic power by cable, wide copper coin and narrow copper coin surrounding at described crystallizer are provided with cooling water tank, and described ultrasonic wave guided wave bar is connected with copper plate of crystallizer is vertical through cooling water tank.
2. continuous cast mold according to claim 1, is characterized in that, the material of described ultrasonic wave guided wave bar is almag or titanium alloy.
3. continuous cast mold according to claim 1, is characterized in that, the length of described ultrasonic wave guided wave bar is the integral multiple of ultrasonic wave wavelength or the integral multiple of half-wavelength adopting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728527.7U CN203556822U (en) | 2013-11-18 | 2013-11-18 | Crystallizer for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728527.7U CN203556822U (en) | 2013-11-18 | 2013-11-18 | Crystallizer for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203556822U true CN203556822U (en) | 2014-04-23 |
Family
ID=50506573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320728527.7U Expired - Fee Related CN203556822U (en) | 2013-11-18 | 2013-11-18 | Crystallizer for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203556822U (en) |
-
2013
- 2013-11-18 CN CN201320728527.7U patent/CN203556822U/en not_active Expired - Fee Related
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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: 20140423 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |