CN2346524Y - Continuous casting crystallizer - Google Patents
Continuous casting crystallizer Download PDFInfo
- Publication number
- CN2346524Y CN2346524Y CN 98203438 CN98203438U CN2346524Y CN 2346524 Y CN2346524 Y CN 2346524Y CN 98203438 CN98203438 CN 98203438 CN 98203438 U CN98203438 U CN 98203438U CN 2346524 Y CN2346524 Y CN 2346524Y
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- crystallizer
- sided
- tapering
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Abstract
The utility model relates to a continuous casting crystallizer, wherein, an inner surface is divided into an upper part and a lower part. The design of the absolute conicity value of one sides of the face centers of an upper part and a lower part of the crystallizer is according to the gap generated by the shrinkage of a casting blank and the deformation generated by the solidifying blank shell of the face region of the crystallizer. Meanwhile, the size of a corner conicity of the crystallizer is changed with the difference of the positions of the lower part and the upper part of the crystallizer and the cooling strength is stronger than the existing continuous casting crystallizer. The thickness of an outlet blank shell is uniform when the casting blank is in the high pulling speed. The inner surface shape of the crystallizer has good contacting performance and wear resistance with the casting blank to be helpful for increasing the service life of the crystallizer.
Description
The utility model relates to a kind of continuous casting high-efficiency mould.
Single linear tapering, multistage linear taper or parabola taper are mainly adopted in the design of tradition continuous cast mold, and on the whole cross section, all identical knot of tapering everywhere, the size of tapering is mainly determined according to the contraction of strand.For single linear tapering crystallizer, if tapering is excessive, then frictional resistance increases in the crystallizer, causes crystallizer wearing and tearing aggravation, and breakout ratio rises.And tapering is too small, is not enough to compensate the contraction of strand, and intensity of cooling is little, is unfavorable for improving pulling rate.Crystallizer for multistage linear taper or parabola taper, though the reacting condition of tapering casting blank solidification shrink the trend of rule, intensity of cooling is higher than the crystallizer of traditional single linear tapering, also help improving the pulling rate of strand to a certain extent, because the tapering of its folding corner region is identical with the tapering of facial zone, and the strand bight is different with facial heat transfer condition, so this class crystallizer also cannot say for sure to demonstrate,prove strand under higher pulling rate condition, the base shell both thickened fast, again growth equably.The mold shape of this tapering is owing to reason service life of also being unfavorable for improving crystallizer of wearing and tearing in addition.
The purpose of this utility model is that a kind of high efficiency continuous casting crystallizer will be provided, has the big advantage of intensity of cooling, strand is under high pulling rate, can thicken fast, can grow equably again, the negative camber shape of crystallizer guarantees that it has better wear resistance, helps improving the service life of crystallizer simultaneously.
The purpose of the utility model continuous cast mold is achieved in that the continuous cast mold inner surface divides upper and lower two parts, and center of face one-sided absolute taper value Y (X) in crystallizer upper and lower part designs by equation group (A); On crystallizer top, the tapering in crystallizer bight is more than or equal to the tapering of crystallizer center of face; In the crystallizer bottom, the tapering in crystallizer bight is less than the tapering or the disappearance of crystallizer center of face.
Wherein: X: apart from crystallizer distance suitable for reading (mm) Y (x): absolute taper value (mm) δ that crystallizer centre, x place is one-sided
2(x): gap (mm) δ that bad solidification shrinkage of the one-sided casting in x place produces
3(x): the deflection (mm) that the just one-sided under external force solidified shell in x place produces
δ
m(x, T): the maximum deformation quantity (mm) that the solidified shell at x place can bear under temperature T (under the design pulling rate, the temperature at shell thickness 2/3rds places)
The one-sided absolute tapering of the utility model continuous cast mold center of face by equation group (A) with the parabolic curve match or with the match of multistage linearity curve.
The gap delta that crystallizer expands and produces has been considered in the design of the absolute taper value Y (A) that the utility model continuous cast mold upper and lower part center of face is one-sided
1(x).
The intensity of cooling of the utility model continuous cast mold is greater than existing continuous cast mold, and strand is under high pulling rate, and the outlet shell thickness is even, and the inner surface configuration of crystallizer and strand have better contact and wearability, help improving the service life of crystallizer.
The utility model is described in more detail below in conjunction with accompanying drawing:
Fig. 1 is the continuous cast mold side cutaway view;
Fig. 2 is the continuous cast mold elevation cross-sectional view;
Fig. 3 is a continuous cast mold A section top plan view;
Fig. 4 is a continuous cast mold B section top plan view;
Fig. 5 is a continuous cast mold C section top plan view;
Fig. 6 is a continuous cast mold L section top plan view.
1 (referring to the Lx section) of the utility model high efficiency continuous casting internal surface of crystallizer branch top, bottom 3 two parts, the one-sided absolute taper value Y (x) in facial 6 centers, crystallizer top is by equation group (A) design, and (A) is as follows for equation group:
Wherein:
X: apart from crystallizer distance suitable for reading (mm)
Y (x): the absolute taper value (mm) that crystallizer centre, x place is one-sided
δ
2(x): the one-sided casting blank solidification in x place shrinks the gap (mm) that produces
δ
3(x): the deflection (mm) that the x place makes one-sided solidified shell produce under external force
δ
m(x, T): the maximum deformation quantity (mm) that the solidified shell at x place can bear under temperature T (under the design pulling rate, the temperature at shell thickness 2/3rds places) had both considered that strand shrank the gap delta that produces
2(x), in order further to improve intensity of cooling, guarantee the uniformity of solidified shell simultaneously, also consider to make the solidified shell of crystallizer facial zone to produce certain deformation amount δ
3(x).Because strand bight 2 is different with facial 6 heat transfer condition, on crystallizer top, the tapering in 2 zones, crystallizer bight is more than or equal to the tapering at facial 6 centers of crystallizer, and bight 2 can adopt straight line or alternate manner to be connected with taper design between the center 6, as shown in Figure 3, Figure 4.The bight tapering is in order to allow bight base shell preferred growth, to remedy in the crystallizer bottom greater than the center tapering because the slow growth that the contraction of bight base shell causes, thereby guarantee to export shell thickness evenly.The one-sided absolute taper value in facial 5 centers, crystallizer bottom still designs by equation group (A), for reducing the frictional resistance of strand in crystallizer, the tapering in crystallizer bight 4 disappears or the only increase of trace, and the increase of trace can be satisfied the demoulding needs of crystallizer copper pipe in process.Can adopt alternate manners such as circular arc, parabola or multistage linearity curve to be connected in the bight 4 of crystallizer bottom 3 with taper design between the center 5, as Fig. 5, shown in Figure 6.
In practical operation, because crystallizer copper pipe (or copper coin) expanded by heating, the design of the utility model high efficiency continuous casting conical degree of crystallizer it is also conceivable that the gap delta that crystallizer copper pipe (or copper coin) expanded by heating produces
1(x), consider that casting blank solidification shrinks the gap delta that produces simultaneously again
2(x) and the deflection δ that one-sided solidified shell is produced
3(x), center of face one-sided absolute tapering in crystallizer upper and lower part designs by equation group (B).(B) is as follows for equation group:
Wherein:
X: apart from crystallizer distance suitable for reading (mm)
Y (x): the absolute taper value (mm) that crystallizer centre, x place is one-sided
δ
1(x): the gap (mm) that crystallizer copper pipe one-sided expanded by heating in x place produces
δ
2(x): the one-sided casting blank solidification in x place shrinks the gap (mm) that produces
δ
3(x): the deflection (mm) that the x place makes one-sided solidified shell produce under external force
δ
m(x, T): the maximum deformation quantity (mm) that the solidified shell at x place can bear under temperature T (under the design pulling rate, the temperature at shell thickness 2/3rds places)
For common continuous casting steel grade, δ
1(x), δ
2(x), δ
3(x) and the span of the length L x on length of mould L and crystallizer top be:
0≤δ
1(x)≤0.7 0≤δ
2(x)≤1.2 0≤δ
3(x)≤1.7
L=600～1100mm Lx=200～700mm Lx/L=0.18～0.7
The concrete parameter of the high efficiency continuous casting crystallizer that uses at the Shoudu Iron and Steel Co second steel mill 5# casting machine is as follows: length of mould L=800mm, Lx=370mm, the cross dimensions of strand is 140 * 140mm, the design pulling rate of strand is 2.8～3.5m/min, the absolute taper value (Y (x)=δ that the crystallizer centre is one-sided
1(x)+δ
2(x)+δ
3(x)) span is 0≤Y (x)≤2.0, and in actual production, the average pull rate of the little square billet casting machine of 140mm reaches about 3.0m/min, improves more than 40%.
Conical degree of crystallizer is by equation group (A) design, and the intensity of cooling that can guarantee the utility model high efficiency continuous casting crystallizer is greater than traditional crystallizer; The taper design of crystallizer folding corner region can guarantee strand under high pulling rate, the uniformity of outlet shell thickness.The shape and the strand of the utility model high efficiency continuous casting crystallizer have better contact and wearability, help improving the service life of crystallizer.
Claims (3)
1, a kind of casting mold for continuous casting is made of copper pipe or four copper coins, it is characterized in that: internal surface of crystallizer divides goes up (1), following (3) two parts, and center of face one-sided absolute taper value Y (x) in crystallizer upper and lower part designs by equation group (A); In crystallizer top (1), the tapering of crystallizer bight (2) is more than or equal to the tapering at crystallizer face (6) center; In crystallizer bottom (3), the tapering of crystallizer bight (4) is less than the tapering or the disappearance at crystallizer face (5) center.
Wherein:
X: apart from crystallizer distance suitable for reading (mm)
Y (x): the absolute taper value (mm) that crystallizer centre, x place is one-sided
δ
2(x): the one-sided casting blank solidification in x place shrinks the gap (mm) that produces
δ
3(x): the deflection (mm) that the x place makes one-sided solidified shell produce under external force
δ
m(x, T): the maximum deformation quantity (mm) that the solidified shell at x place can bear under temperature T (under the design pulling rate, the temperature at shell thickness 2/3rds places)
2, continuous cast mold according to claim 1 is characterized in that: the design of conical degree of crystallizer by equation group (A) with the parabolic curve match or with the match of multistage linearity curve.
3, continuous cast mold according to claim 1 is characterized in that: the gap delta that crystallizer expands and produces has been considered in the design of the absolute taper value Y (x) that crystallizer upper and lower part center of face is one-sided
1(x).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203438 CN2346524Y (en) | 1998-04-15 | 1998-04-15 | Continuous casting crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98203438 CN2346524Y (en) | 1998-04-15 | 1998-04-15 | Continuous casting crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2346524Y true CN2346524Y (en) | 1999-11-03 |
Family
ID=33960269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98203438 Expired - Lifetime CN2346524Y (en) | 1998-04-15 | 1998-04-15 | Continuous casting crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2346524Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907121A (en) * | 2018-09-20 | 2018-11-30 | 中冶赛迪工程技术股份有限公司 | power function crystallizer copper pipe |
| CN113857444A (en) * | 2021-10-10 | 2021-12-31 | 秦皇岛瀚丰长白结晶器有限责任公司 | High-pulling-speed crystallizer suitable for producing plain carbon steel |
| CN115338379A (en) * | 2022-08-19 | 2022-11-15 | 日照钢铁控股集团有限公司 | Narrow-face copper plate taper compensation method, device, medium and equipment |
-
1998
- 1998-04-15 CN CN 98203438 patent/CN2346524Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907121A (en) * | 2018-09-20 | 2018-11-30 | 中冶赛迪工程技术股份有限公司 | power function crystallizer copper pipe |
| CN108907121B (en) * | 2018-09-20 | 2024-03-01 | 中冶赛迪工程技术股份有限公司 | Copper pipe of power function crystallizer |
| CN113857444A (en) * | 2021-10-10 | 2021-12-31 | 秦皇岛瀚丰长白结晶器有限责任公司 | High-pulling-speed crystallizer suitable for producing plain carbon steel |
| CN115338379A (en) * | 2022-08-19 | 2022-11-15 | 日照钢铁控股集团有限公司 | Narrow-face copper plate taper compensation method, device, medium and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Shougang Co., Ltd. Assignor: Capital Iron & Steel General Company Contract fulfillment period: In April 15, 2008, 6 years, the patent expires Contract record no.: 200210042 Denomination of utility model: Continuous casting mold Granted publication date: 19991103 License type: Pai Ta Record date: 2002.6.3 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.15, 6 YEARS, EXPIRATION OF PATENT RIGHT Name of requester: BEIJING SHOUDU STEEL CO., LTD. Effective date: 20020603 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |