CN2858124Y - Long-life mould - Google Patents
Long-life mould Download PDFInfo
- Publication number
- CN2858124Y CN2858124Y CN 200520115195 CN200520115195U CN2858124Y CN 2858124 Y CN2858124 Y CN 2858124Y CN 200520115195 CN200520115195 CN 200520115195 CN 200520115195 U CN200520115195 U CN 200520115195U CN 2858124 Y CN2858124 Y CN 2858124Y
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- China
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- crystallizer
- copper pipe
- primary area
- curve
- copper tube
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Abstract
The present utility model relates to a caster crystallizer used for casting rectangle slabs. The four side faces in the inner walls of the crystallizer copper tube are divided into a primary area 1 and an angle area 2. In the primary area, the longitudinal section curve of the inner walls of the crystallizer copper consists of an up beeline segment and a down quasi parabola curve segment, wherein two curve segments osculate each other, the taper angle of the copper tube primary area decreases continuously, and the shape of the inner room changes to fit the shrinkage of slab housings, to improve the distribution of the extrusion stress between inner walls of the copper tube and the slab housings, and then to reduce the peak value or the extrusion stress. In the angle area, the taper angle value of the copper tube is smaller than that in the primary area in a corresponding height to decrease the extrusion stress between inner walls of the copper tube corner part and the slab housings, and then to depress the abrasion between the casting slabs at lower temperature and the copper tube corner part. In any cross section in the angle area height range of the inner walls of the copper tube, a transition curve is adopted to sleekly connected the beeline segment in the primary area to the circular arc of said corner part, with a continuously increasing curvature from the beeline segment in the primary area to the transition curve and then to the circular arc of said corner part, to prevent the caster crystallizer inner wall being firstly frayed where the curvature changes suddenly.
Description
Affiliated technical field
The utility model relates to the crystallizer in the continuous casting steel machine of cast rectangular base.Each side of this crystallizer copper inside pipe wall is divided into primary area and angular region, the vertical section curve in primary area is made up of last straightway and the following parabolic segment of intending, two contact of a curve, the copper pipe inner chamber has continuous tapering, and the variation of cavity shape adapts to the contraction of solidified shell, and the angular region is connected with the primary area is smooth, the tapering of angular region is less than the tapering at primary area respective heights place, to reduce the peak value of the extrusion stress between copper pipe inwall and base shell, improve the wear condition of copper pipe inwall, improve the service life of copper pipe.
Background technology
The crystallizer of continuous casting steel machine is finished the task with the preliminary solidification forming of liquid molten steel.After liquid molten steel injects crystallizer,,, the base shell increases gradually along with constantly moving downward thickness owing to be subjected to the very fast base shell that forms weakness at the meniscus place of the strong cooling of crystallizer copper pipe.The crystallizer copper pipe of cast rectangular base, change of shape according to inner chamber, it can be divided three classes: the first kind is to have tapering (comprising single tapering, many taperings, the continuous tapering of parabola, the continuous tapering of double-paraboloid line etc.) on the longitudinal profile of copper pipe inner chamber, and the cross section of copper pipe inner chamber all is the ordinary mould of the rectangle (comprising square) that has fillet; Second class is not only to have tapering on the longitudinal profile of copper pipe inner chamber, and the special crystallizer that the shape of cross section of copper pipe inner chamber also changes is as the convex crystallizer; The 3rd class is compared with the first kind, and difference is to begin end opening place to crystallizer copper pipe from a certain height of crystallizer copper pipe, and the tapering in copper pipe inner chamber bight is less than the tapering at its middle part, as the diamond crystallizer.Ordinary mould, because the design tapering curve of copper pipe originally is a defectiveness, again because copper pipe certain error can occur in processing and making process, thereby the actual tapering of copper pipe can not adapt to the variation of casting steel grade and operating condition fully, be difficult to guarantee that the actual taper value of crystallizer is exactly that the base shell shrinks needed ideal taper value in crystallizer, make the serious skewness of extrusion stress between copper pipe inwall and base shell, especially near copper pipe end opening bight, there is very big extrusion stress peak value, wear and tear comparatively fast near causing copper pipe end opening bight, wearing and tearing are principal modes that the ordinary mould copper pipe is scrapped near the end opening bight.The convex crystallizer, the top, four sides of copper pipe inwall is to evagination, transition is the plane gradually downwards, the base shell is subjected to the extruding of copper pipe in the process that moves downward, air gap thickness between copper pipe inwall and base shell is reduced, heat transfer efficiency increases, but the extrusion stress of this crystallizer copper pipe at the end opening place is similar with abrasion condition to the ordinary mould copper pipe, and wearing and tearing also are the principal modes that the convex crystallizer copper pipe is scrapped near the end opening bight.The diamond crystallizer, begin end opening place from a certain height of crystallizer copper pipe to crystallizer copper pipe, the tapering in copper pipe inner chamber bight, couples together straight line and bight circular arc with transition arc on the cross section of crystallizer copper inside pipe wall less than the tapering at its middle part, improved heat transfer efficiency, improved the distribution situation of extrusion stress between copper pipe inwall and base shell, but at the tie point place of transition arc and straight line, curvature is undergone mutation, it is still very fast to wear and tear, and is the principal mode that causes copper pipe to be scrapped.
Summary of the invention
The purpose of this utility model provides a kind of long-life crystallizer, to solve the problem that inner wall abrasion is seriously uneven, excessive concentrated wear causes whole copper pipe to be scrapped that existing crystallizer copper pipe exists, this crystallizer copper pipe can reduce the peak value of extrusion stress between copper pipe inwall and base shell, improve the wear condition of crystallizer copper pipe, improve the service life of crystallizer.
The technical scheme that its technical problem that solves the utility model adopts is:
1. wide of the crystallizer copper inside pipe wall of cast rectangular continuous casting billet and leptoprosopy all are divided into the primary area 1. with the angular region 2., primary area vertical section curve 1. can adapt to the contraction of base shell, to reduce the peak value of extrusion stress between copper pipe inwall and base shell, the vertical section curve in wide primary area is by last straightway, and its equation is
With the following parabolic segment of intending, its equation is
Form.Last straightway and following plan parabolic segment are tangent at the X=c+d place.
The vertical section curve in leptoprosopy primary area is by last straightway, and its equation is
With the following parabolic segment of intending, its equation is
Form.Last straightway and following plan parabolic segment are tangent at the X=c+d place.
2. 2. the height l in the angular region
3In, the taper value in crystallizer copper pipe bight is less than the 1. taper value at respective heights place of primary area, to alleviate the wearing and tearing of the lower strand bight of temperature to the copper pipe bight.
3. at height l
3On interior arbitrary cross section, use easement curve y=Ax
nThe straightway p that the primary area is 1. interior
2P and radius are that the bight circular arc of r couples together glossily, from straight line p
2P is to transition curve y=Ax
n, be the bight circular arc of r to radius again, curvature changes continuously, at first is worn at the curvature mutation place to avoid the crystallizer inwall.
More than various in, a is a rectangle crystallizer copper pipe width suitable for reading, b is a rectangle crystallizer copper pipe height suitable for reading, ε
vBe the shrinkage factor of solidified shell, k is the coagulation factor of molten steel in the crystallizer copper pipe, and c is the crystallizer distance to liquid steel level suitable for reading, d is supreme straightway of liquid steel level and the distance of intending the parabolic segment points of tangency down, and v is a casting speed, and X is an ordinate, Y is an abscissa, and H is the height of crystallizer.
The effect that the utility model is useful is: can improve the distribution of extrusion stress between crystallizer copper inside pipe wall and base shell and reduce the peak value of extrusion stress, improve the casting speed of conticaster and the service life of crystallizer, reduce the production cost of continuous casting billet.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples
Fig. 1 is the vertical section schematic diagram of wide of this long-life crystallizer
Fig. 2 is the vertical view of this crystallizer copper pipe
Fig. 3 is the partial enlarged drawing of copper pipe inner chamber lower corner among Fig. 2
Fig. 4 is the front view of a side of copper pipe inner chamber among Fig. 2
Fig. 5 is the stereogram of half side among Fig. 4
1. crystallizer liquid steel levels among the figure, 2. crystallizer copper pipe, 3. air gap, 4. solidified shell.
The specific embodiment
Long-life crystallizer copper tube cavity has tapering from suitable for reading to end opening, wide of the copper pipe inwall and leptoprosopy be divided into the primary area 1. with the angular region 2., in the primary area 1., the vertical section curve of copper pipe inwall is made up of last straightway and the following parabolic segment of intending, the two sections curve is tangent at the X=c+d place, and copper pipe primary area tapering is 1. reduced continuously, and the change of shape of inner chamber adapts to the contraction of base shell, distribute with the extrusion stress of improving between copper pipe inwall and base shell, reduce the peak value of extrusion stress.The angular region 2. in, taper value is slightly less than the 1. taper value in the respective heights of primary area, to reduce the extrusion stress between copper pipe bight inwall and base shell, alleviates the wearing and tearing of the lower strand bight of temperature to the copper pipe bight.At the angular region of copper pipe inwall height l
3On interior arbitrary cross section, use easement curve y=Ax
nThe straightway p that the primary area is 1. interior
2P and radius are that the bight circular arc of r couples together glossily, from straight line p
2P is to transition curve y=Ax
n, be the bight circular arc of r to radius again, curvature increases continuously, at first is worn at its curvature mutation place to avoid the crystallizer inwall.
Claims (4)
1. long-life crystallizer, on the longitudinal profile of crystallizer copper tube cavity, has tapering, on the lateral cross section of copper pipe inner chamber, have fillet, it is characterized in that: with each side of copper pipe (2) inwall be divided into the primary area 1. with the angular region 2., primary area vertical section curve 1. is made of last straightway and the following parabolic segment of intending, and angular region tapering 2. is less than primary area tapering 1..
2. long-life crystallizer according to claim 1 is characterized in that: wide primary area of copper pipe (2) inwall vertical section curve 1. is respectively by last straightway
With the following parabolic segment of intending
Form, last straightway and following plan parabolic segment are tangent at the X=c+d place.
3. long-life crystallizer according to claim 1 is characterized in that: copper pipe (2) inwall leptoprosopy primary area vertical section curve 1. is respectively by last straightway
With the following parabolic segment of intending
Last straightway and following plan parabolic segment are tangent.
4. long-life crystallizer according to claim 1 is characterized in that: at copper pipe inwall angular region height l
3On interior arbitrary copper pipe cross section, use easement curve y=Ax
nThe straightway p that the primary area is 1. interior
2P and radius are that the bight circular arc of r couples together glossily, from straight line p
2P is to transition curve y=Ax
n, the bight circular arc that arrives again, curvature changes continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115195 CN2858124Y (en) | 2005-07-13 | 2005-07-13 | Long-life mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115195 CN2858124Y (en) | 2005-07-13 | 2005-07-13 | Long-life mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2858124Y true CN2858124Y (en) | 2007-01-17 |
Family
ID=37610983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520115195 Expired - Fee Related CN2858124Y (en) | 2005-07-13 | 2005-07-13 | Long-life mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2858124Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745136A (en) * | 2020-07-08 | 2020-10-09 | 中冶赛迪工程技术股份有限公司 | Crystallizer |
-
2005
- 2005-07-13 CN CN 200520115195 patent/CN2858124Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745136A (en) * | 2020-07-08 | 2020-10-09 | 中冶赛迪工程技术股份有限公司 | Crystallizer |
| CN111745136B (en) * | 2020-07-08 | 2022-06-10 | 中冶赛迪工程技术股份有限公司 | Crystallizer |
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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 |