CN203030848U - Non-vibrating demolding crystallizer - Google Patents
Non-vibrating demolding crystallizer Download PDFInfo
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- CN203030848U CN203030848U CN 201320043451 CN201320043451U CN203030848U CN 203030848 U CN203030848 U CN 203030848U CN 201320043451 CN201320043451 CN 201320043451 CN 201320043451 U CN201320043451 U CN 201320043451U CN 203030848 U CN203030848 U CN 203030848U
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- 238000005266 casting Methods 0.000 claims abstract description 60
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 20
- 239000010959 steel Substances 0.000 abstract description 20
- 238000001816 cooling Methods 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 4
- 238000005204 segregation Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 10
- 238000009749 continuous casting Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
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Abstract
The utility model relates to a crystallizer of non-vibrating drawing of patterns, wherein, the crystallizer of non-vibrating drawing of patterns has an outer crystallizer, outer crystallizer comprises the outer crystallizer block that the polylith is adjacent to be set up, and trapezoidal wedge block is personally submitted in every outer crystallizer block transversal, each outer crystallizer block closely arranges to can be along radial sideslip, and each be equipped with the cooling water passageway in the outer crystallizer block. The utility model discloses an outer crystallizer block can be independently along radial removal, and its inside leads to water cooling. Compared with the prior art, the utility model has small demoulding force and easier demoulding; because the contact time of the molten steel in the crystallizer and the wall of the crystallizer is long, the solidification speed is high, the component segregation in the formed casting blank is small, and the crystal grains are fine; the crystallizer of the non-vibrating demoulding can obviously improve the surface and the internal quality of the tube blank, and avoid the defects of cracks, slag inclusion and the like.
Description
Technical Field
The utility model relates to a crystallizer for continuous casting, in particular to a non-vibration type demoulding crystallizer which is different from a known demoulding mode that the whole crystallizer needs to vibrate up and down for a plurality of times.
Background
Continuous casting is an important production method in the modern smelting production process, and the adoption of the continuous casting method can greatly improve the smelting production efficiency, reduce the labor intensity of workers and simultaneously reduce the production cost. In the modern continuous casting production process, the crystallizer is called as the heart of a continuous casting machine, and has the function of forcibly cooling high-temperature molten steel continuously injected into a cavity of the crystallizer through a cooling wall to guide out the heat of the high-temperature molten steel, so that the molten steel is solidified into a blank shell with a required section shape and a certain thickness in the crystallizer, and a casting blank with a liquid core part is continuously pulled out from the lower part of the crystallizer and enters a secondary cooling zone.
At present, in order to prevent the cast slab from adhering to the inner wall of the mold during solidification, and to enable the cast slab forming the slab shell to be smoothly pulled out of the mold, a known demolding method is to adopt an integral vibration mode of the mold, that is: and molten steel is injected into the crystallizer, the wall of the crystallizer is separated from the primary blank shell through multiple up-and-down vibration of the crystallizer, then the blank shell with the liquid core is sent out of the crystallizer, and the liquid core is continuously solidified in a secondary cooling zone to form a final product, namely a casting blank. The production mode of vibration can form cracks, deep vibration marks, slag inclusions, pits and heavy skin on the surface of a casting blank; because the vibration demoulding action of the crystallizer is frequent, the contact time of the blank shell and the wall of the crystallizer is short, and the casting blank exchanges heat with the crystallizer through an air gap in most of time, the cooling speed is low, and the segregation of the internal components of the casting blank is large; the brittle liquid-cored cast strand exiting the crystallizer is also subjected to a bending-straightening process, which is prone to internal cracking.
In addition, the traditional crystallizer can not produce hollow casting blanks, and solid casting blanks are required to be used for preparing hollow tube blanks by adopting a perforation method, the process limits the length of the tube blanks, and certain special steel types can not be realized.
In view of the above-mentioned drawbacks of the prior art, the present invention provides a mold for non-vibrating type mold release, which is developed based on the experience of production design in the field and related fields for many years, and can produce hollow and solid casting blanks to overcome the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a continuous casting is with crystallizer of non-vibrating drawing of patterns, compare well-known drawing of patterns method and crystallizer, its cooling effect is good, casting blank surface and inside high quality can produce hollow casting blank and solid casting blank.
Therefore, the utility model provides a crystallizer of non-vibrating drawing of patterns has an outer crystallizer, outer crystallizer comprises the outer crystallizer block that the polylith is adjacent to be set up, and every outer crystallizer block is transversal to personally submit trapezoidal wedge block, each outer crystallizer block closely arranges, forms the casting chamber, every outer crystallizer block homoenergetic is along radially outside sideslip, and each the internal cooling water passageway that all is equipped with of outer crystallizer block.
The mold for non-vibration demolding, which is described above, wherein an inner mold is arranged in the outer mold, a casting cavity is formed between the outer mold and the inner mold, and a hollow casting blank is cast; the inner crystallizer is composed of a plurality of inner crystallizer blocks, and the cross section of each inner crystallizer block is in a trapezoidal wedge shape; and a cooling water channel is arranged in each internal crystallizer block.
The mold according to the above, wherein the inner mold blocks are in clearance fit with each other, and each inner mold block can move radially inward; and each inner crystallizer block body is internally provided with a cooling water channel.
The non-vibrating demolding mold as set forth above, wherein the outer mold blocks, the inner mold blocks, are capable of being traversed in the radial direction simultaneously or independently.
The utility model discloses a characteristics and the advantage of crystallizer of non-vibrating drawing of patterns are:
the inner crystallizer block and the outer crystallizer block which form the crystallizer of the utility model can move independently, compared with the prior art, the utility model has small demoulding force and easier demoulding; the defect that the casting blank with the liquid core in most time actually exchanges heat with the crystallizer through the air gap and the heat exchange efficiency is low due to the fact that multiple times of vibration and demoulding are needed in the prior art is overcome. By adopting the non-vibrating demoulding crystallizer of the utility model, because the casting blank with the liquid core is always contacted with the crystallizer before the inner and outer crystallizers move transversely (before demoulding), the heat exchange efficiency is higher, the solidification speed is high, the component segregation in the formed casting blank is small, and the crystal grains are fine; adopt the utility model discloses a surface and the inside quality of improvement pipe that the crystallizer of non-vibrating drawing of patterns can be obvious, avoided the defect such as crackle and clamp sediment.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
FIG. 1 is a schematic view of the structure of one embodiment of the non-vibrating demolded mold of the present invention (producing a solid cast slab);
FIG. 2 is a schematic view of the mold according to another embodiment of the present invention (producing a hollow cast slab);
FIG. 3 is a schematic view of the outer and inner crystallizer blocks forming the inner and outer crystallizers;
FIG. 4 is a schematic, enlarged view of a portion of an embodiment of the internal crystallizer of the present invention;
FIG. 5 is a schematic, enlarged view of a portion of one embodiment of the internal crystallizer of the present invention;
FIG. 6 is a hydraulic driving diagram of one of the driving modes of the inner and outer crystallizer wedges;
the reference numbers illustrate:
1. outer crystallizer 10, outer crystallizer block 2, inner crystallizer 20, inner crystallizer block 201, first moving block 202, second moving block 2011, lap part 2021, socket part 3, hollow casting blank 4, solid casting blank
Detailed Description
The utility model provides a crystallizer of non-vibrating drawing of patterns, it has an outer crystallizer, outer crystallizer comprises the outer crystallizer block that the polylith is adjacent to be set up, and every outer crystallizer block is transversal personally submits trapezoidal wedge cubic, each the outer crystallizer block closely arranges and forms the casting chamber, casts solid casting blank. Each outer crystallizer block body can move transversely outwards along the radial direction, and a cooling water channel is arranged in each outer crystallizer block body.
In addition, an inner crystallizer can be arranged in the outer crystallizer, a casting cavity is formed between the outer crystallizer and the inner crystallizer, and a hollow casting blank is cast; the inner crystallizer is composed of a plurality of inner crystallizer blocks, and the cross section of each inner crystallizer block is in a trapezoidal wedge shape; the inner crystallizer blocks are in clearance fit, the size of the clearance is based on the condition that the inner crystallizer blocks can be separated from the casting blank, the inner crystallizer blocks in each inner crystallizer block can move inwards in the radial direction, and cooling water channels are arranged in the inner crystallizer blocks.
The utility model discloses a crystallizer of non-vibrating drawing of patterns is owing to no matter be outer crystallizer or interior crystallizer constitute by the transversal crystallizer block who personally submits trapezoidal wedge form of polylith, and every outer crystallizer block, interior crystallizer block can both be simultaneously or independently along radial sideslip, make the crystallizer and the casting blank (the primary blank shell) separation of formation, thereby the utility model discloses a structure and well-known technique are compared and are reduced the primary blank shell that forms in the crystallizer and the drawing of patterns power of crystallizer, have obviously improved casting blank surface and inside quality, can effectively avoid the crackle of casting blank and defect such as clamp slag.
In order to clearly understand the technical features, objects and effects of the present invention, the following detailed description of the embodiments, structures, features and functions of the mold for non-vibrating type mold release of the mold for continuous casting according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In addition, through the description of the embodiments, the technical means and effects of the present invention adopted to achieve the predetermined purpose can be more deeply and specifically understood, however, the attached drawings are only provided for reference and description, and are not used for limiting the present invention.
As shown in fig. 1 and 3, the utility model provides a crystallizer of non-vibrating drawing of patterns has an outer crystallizer 1, and this outer crystallizer 1 comprises the outer crystallizer block 10 that the polylith was adjacent to be set up, and every outer crystallizer block 10 is transversal personally submits trapezoidal wedge block-shaped, and each outer crystallizer block 10 closely arranges and forms a column outer crystallizer wholly, forms the casting chamber in it, can be used to cast solid casting blank 4. And each outer crystallizer block 10 can move laterally outwards in a radial direction, and in addition, each outer crystallizer block 10 is provided with a cooling water channel (not shown in the figure).
Referring to fig. 2, in another embodiment, an inner mold 2 is disposed in an outer mold 1, and a casting cavity is formed between the outer mold 1 and the inner mold 2 for casting a hollow casting blank 3; the inner crystallizer 2 is composed of a plurality of inner crystallizer blocks 20, and the cross section of each inner crystallizer block 20 is in a trapezoidal wedge shape; and a cooling water channel is arranged in each inner crystallizer block body 20.
In a possible solution, as shown in fig. 4, the inner blocks 20 are in clearance fit with each other, the size of the clearance being such as to allow the inner blocks 20 to be out of contact with the cast strand, and the inner blocks 20 of each inner block can be moved radially inwards simultaneously or independently.
As shown in fig. 5, in another possible technical solution, in order to prevent the molten steel from leaking during the casting process, the inner mold blocks 20 are spaced apart by a first moving block 201 and a second moving block 202, and the front end of the first moving block 201 facing the casting cavity side is overlapped with the front end of the second moving block 202 to prevent the molten steel from leaking. For example, the front end of the first movement block 201 may be formed as a bridge 2011 protruding to both sides, and the front end of the second movement block 202 may be formed as a receiving portion 2021 to be fitted with the bridge 2011. In one embodiment as shown in fig. 5, the mating surface of the bridging portion 2011 is formed as an inclined surface inclined outward on both sides, and both sides of the receiving portion 2021 are formed as inclined surfaces inclined inward,
after the green compact is formed, the second movable block 202 moves in a direction away from the shell of the green compact before the first movable block 201, and after the second movable block 202 is separated from the casting blank, the first movable block 201 moves in a direction away from the shell of the green compact, thereby completing the demolding step.
The utility model discloses a non-vibration drawing of patterns method of crystallizer for continuous casting is, utilizes as above the crystallizer of non-vibration drawing of patterns, to each let in cooling water in the crystallizer block, when getting into when the molten steel surface cooling in the crystallizer forms the primary blank shell, the crystallizer block is to keeping away from the direction removal of primary blank shell realizes the drawing of patterns.
When a solid casting blank is produced, a casting cavity is formed in the outer crystallizer 1, so that the solid casting blank can be formed; the outer crystallizer blocks 10 with trapezoidal wedge blocks in the cross section are closely arranged and can move transversely along the radial direction to the outside far away from the primary blank shell, so that demoulding is realized. The utility model discloses when casting hollow casting blank be equipped with an interior crystallizer 2 in the outer crystallizer 1, form the casting chamber between this outer crystallizer 1 and the interior crystallizer 2. The outer crystallizer 1 and the inner crystallizer 2 are both composed of a plurality of outer crystallizer blocks 10 or inner crystallizer blocks 20, and the cross section of each outer crystallizer block 10 or inner crystallizer block 20 is in a trapezoidal wedge shape.
Wherein, the inner mold blocks 20 have a slight clearance H therebetween to form a clearance fit, each inner mold block 20 can be moved inward in the radial direction simultaneously or independently, and when moving to eliminate the clearance between two adjacent inner mold blocks 20, the inner wall of the inner mold 2 is separated from the primary shell. The utility model discloses in, the big or small numerical value of clearance H between the interior crystallizer block 20 is not injectd, and interior crystallizer block 20 is to removing the back, and the interior wall of interior crystallizer 2 can break away from the contact with the casting blank for accurate.
In order to prevent the molten steel from leaking in the casting process, the superheat degree of the molten steel is reduced as much as possible before casting, the cooling strength of two adjacent crystallizer blocks is increased, and the time for forming a primary blank shell on the surface of the molten steel is shortened. Since a small gap exists between two adjacent inner mold blocks 20, in order to prevent the molten steel from intruding into the gap H between two adjacent inner mold blocks 20, one of the methods employed is to refer to fig. 4, which is based on the principle of reducing the superheat of the molten steel as much as possible before casting, increasing the cooling strength of two adjacent inner mold blocks 20, and shortening the time for forming a primary shell on the surface of the molten steel. As soon as the molten steel contacts the inner mold blocks 20, it is immediately solidified into a primary shell which prevents the molten steel from further penetrating into the gap H between two adjacent inner mold blocks 20.
In another possible solution, referring to fig. 5, the inner mold blocks may also be joined end to prevent the leakage of molten steel, and during the demoulding, the second moving block 202 moves inwards to be out of contact with the hollow cast slab 3, and then the first moving block 201 moves inwards to be out of contact with the hollow cast slab 3. There are many ways to prevent the molten steel from intruding into the gap H between two adjacent inner mold blocks 20, which are not described herein.
In addition, there are many ways to drive the inner and outer mold blocks 20, 10 to move, such as driving by a parallel four-bar linkage mechanism, driving by a cam-slider mechanism, etc., and fig. 6 shows a schematic structural diagram of hydraulically driving the mold blocks to move, where C is the hydraulic unit driven by the inner mold block 20 and D is the hydraulic unit driven by the outer mold block 10.
The utility model discloses a theory of operation is: the utility model provides a crystallizer of non-vibrating drawing of patterns, production hollow casting blank or solid casting blank in the mainly used continuous casting production. Casting a hollow casting blank, namely, when molten steel is injected into a cavity formed by an outer crystallizer 1 and an inner crystallizer 2 to be cooled and solidified into a hollow casting blank 3, then moving each independent outer crystallizer block 10 forming the outer crystallizer 1 outwards along a radial direction F to separate the outer crystallizer 1 from the hollow casting blank 3, and moving each independent inner crystallizer block 20 forming the inner crystallizer 2 inwards along a radial direction M to separate the inner crystallizer 2 from the hollow casting blank 3, namely, when the surface of the molten steel entering the crystallizer is cooled to form a primary blank shell, the blocks forming the crystallizer move away from the primary blank shell to realize demoulding. Then the casting blank is pulled out of the crystallizer of the non-vibration demoulding of the utility model.
The utility model is characterized in that the crystallizer is separated from the casting blank in a non-vibration mode, the demoulding is easy, the contact time of the casting blank and the wall of the crystallizer is long, the cooling effect is good, and the surface and the internal quality of the casting blank are high; in particular, the crystallizer can cast hollow tube blanks and has strong practicability.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned integral application, and various technical features described in the present invention can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention of the present invention.
Claims (4)
1. The non-vibration demoulding crystallizer is characterized by comprising an outer crystallizer, wherein the outer crystallizer consists of a plurality of outer crystallizer blocks which are adjacently arranged, the cross section of each outer crystallizer block is in a trapezoidal wedge shape, the outer crystallizer blocks are closely arranged to form a casting cavity, each outer crystallizer block can move transversely outwards along the radial direction, and a cooling water channel is arranged in each outer crystallizer block.
2. The non-vibrating mold-stripping mold according to claim 1, wherein an inner mold is provided in the outer mold, and a casting cavity is formed between the outer mold and the inner mold for casting a hollow strand; the inner crystallizer is composed of a plurality of inner crystallizer blocks, and the cross section of each inner crystallizer block is in a trapezoidal wedge shape; and a cooling water channel is arranged in each internal crystallizer block.
3. The non-vibrating demolding mold as set forth in claim 2, wherein each of said inner mold blocks is in clearance fit with each other, each of said inner mold blocks being capable of radially inwardly traversing; and each inner crystallizer block body is internally provided with a cooling water channel.
4. The non-vibrating demolding mold according to claim 3, wherein the outer mold block and the inner mold block are capable of simultaneous or independent radial traverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043451 CN203030848U (en) | 2013-01-25 | 2013-01-25 | Non-vibrating demolding crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043451 CN203030848U (en) | 2013-01-25 | 2013-01-25 | Non-vibrating demolding crystallizer |
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| Publication Number | Publication Date |
|---|---|
| CN203030848U true CN203030848U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320043451 Expired - Lifetime CN203030848U (en) | 2013-01-25 | 2013-01-25 | Non-vibrating demolding crystallizer |
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| Country | Link |
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| CN (1) | CN203030848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084551A (en) * | 2013-01-25 | 2013-05-08 | 中冶京诚工程技术有限公司 | Non-vibration type demoulding method of crystallizer for continuous casting and crystallizer |
-
2013
- 2013-01-25 CN CN 201320043451 patent/CN203030848U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084551A (en) * | 2013-01-25 | 2013-05-08 | 中冶京诚工程技术有限公司 | Non-vibration type demoulding method of crystallizer for continuous casting and crystallizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130703 Effective date of abandoning: 20150429 |