CN211360582U - Crystallizer and vertical hollow round billet continuous casting machine - Google Patents
Crystallizer and vertical hollow round billet continuous casting machine Download PDFInfo
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- CN211360582U CN211360582U CN201921886439.3U CN201921886439U CN211360582U CN 211360582 U CN211360582 U CN 211360582U CN 201921886439 U CN201921886439 U CN 201921886439U CN 211360582 U CN211360582 U CN 211360582U
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- continuous casting
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- round billet
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- 238000009749 continuous casting Methods 0.000 title claims description 31
- 238000005266 casting Methods 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 235000019484 Rapeseed oil Nutrition 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims description 46
- 239000002893 slag Substances 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000003517 fume Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 235000019198 oils Nutrition 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model provides a crystallizer and vertical hollow round billet conticaster, including outer crystallizer and interior crystallizer, outer crystallizer has and holds the cavity, and interior crystallizer is cylindric structure, and interior crystallizer cover is established in outer crystallizer, and interior crystallizer can rotate for outer crystallizer, and the lateral wall upper end of interior crystallizer is provided with the lubricating-oil hole that is used for letting in rapeseed oil in order to play heat transfer and lubrication action. The beneficial effects of the utility model are that, pour into rapeseed oil through the lubricating oil hole on the interior crystallizer into, can make rapeseed oil carbonize under the hot base effect, fill the air gap between blank shell and interior crystallizer, play heat transfer and lubrication action, interior crystallizer has rotation function simultaneously, combines very to do benefit to drawing of patterns and cooling with the carbon layer that rapeseed oil formed to can prevent effectively that hollow casting blank locking interior crystallizer.
Description
Technical Field
The utility model relates to a continuous casting field, concretely relates to crystallizer and vertical hollow round billet conticaster.
Background
With the development of the iron and steel industry, iron and steel enterprises pay more and more attention to energy conservation and consumption reduction, and the near-net-shape continuous casting technology can save energy and reduce the investment and production cost of the subsequent process, wherein the hollow round billet continuous casting technology is one of the technologies. At present, seamless steel tube manufacturers mainly adopt a method of solid round billet → perforation → oblique rolling pierced billet → continuous rolling tube → reduction and sizing to produce seamless steel tubes, if the blanks are made into hollow round billets, the perforation procedure can be omitted, the investment of tube-penetrating equipment and the production cost are reduced, and the method has great economic benefits for iron and steel enterprises.
At present, a plurality of enterprises for producing hollow round billets and steel pipes by direct continuous casting technology are researched, but no report of industrial production is provided. The continuous casting production of the hollow round billet has the following problems that the falling is difficult due to the fact that the crystallizer is tightly held by the solidification and shrinkage of the molten steel, the molten steel contacted with the inner crystallizer is easy to leak in the crystallization process, the steel leakage meets secondary cooling water, explosion accidents are easy to occur, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a crystallizer and vertical hollow round billet conticaster to solve the problem of crystallizer copper pipe locking in the casting blank heap.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a crystallizer, includes outer crystallizer and interior crystallizer, and outer crystallizer has and holds the cavity, and interior crystallizer is cylindric structure, and interior crystallizer cover is established in outer crystallizer, and interior crystallizer can rotate for outer crystallizer, and the lateral wall upper end of interior crystallizer is provided with the lubricated oil hole that is used for letting in rapeseed oil in order to play heat transfer and lubrication action.
Further, the outer diameter of the inner mold is gradually reduced in a direction in which the molten steel flows through the inner mold.
Furthermore, the length of the inner crystallizer is 700 mm-900 mm, and the taper of the inner crystallizer is 0.5%/m-0.8%/m.
The utility model also provides a vertical hollow round billet conticaster, including foretell crystallizer, vertical hollow round billet conticaster still includes the pans, sets up in crystallizer upper reaches position, and the pans pass through the immersion nozzle and are connected with the crystallizer.
Furthermore, the number of the submerged nozzles is at least two, and the submerged nozzles are symmetrically arranged on two opposite sides of the crystallizer.
Further, the vertical hollow round billet continuous casting machine further comprises: the outer pipe secondary cold spray cooling system is arranged at the downstream position of the outer crystallizer and can cool the outer surface of the casting blank; and the inner pipe cooling system is arranged at the downstream position of the inner crystallizer and can cool the inner surface of the casting blank.
Further, the vertical hollow round billet continuous casting machine further comprises a pinch roll, the pinch roll is arranged at the downstream direction of the outer pipe secondary cooling spray cooling system, and the pinch roll can be matched with the outer surface of the casting billet to clamp the casting billet to move.
Furthermore, the vertical hollow round billet continuous casting machine also comprises a vertical fire cutting machine which is arranged at the downstream direction of the pinch roll and can cut a casting blank; the water retaining and cutting slag collecting device is arranged below the vertical flame cutting machine, and is obliquely arranged with the horizontal plane; and the cutting slag box is arranged below the water retaining and cutting slag collecting device and is used for receiving cooling water and slag, and a drain hole is formed in the bottom of the cutting slag box.
Further, the vertical hollow round billet continuous casting machine also comprises a steam and cutting flue gas collecting device which is arranged at the downstream direction of the pinch roll and is positioned at the opposite side of the vertical flame cutting machine.
Furthermore, the vertical hollow round billet continuous casting machine also comprises a casting blank clamping and lifting device which is arranged at the downstream direction of the vertical flame cutting machine, and the casting blank cut off by the vertical flame cutting machine is clamped to the discharging inclined pull trolley through the casting blank clamping and lifting device.
The beneficial effects of the utility model are that, pour into rapeseed oil through the lubricating oil hole on the interior crystallizer into, can make rapeseed oil carbonize under the hot base effect, fill the air gap between blank shell and interior crystallizer, play heat transfer and lubrication action, interior crystallizer has rotation function simultaneously, combines very to do benefit to drawing of patterns and cooling with the carbon layer that rapeseed oil formed to can prevent effectively that hollow casting blank locking interior crystallizer.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a distribution diagram of the crystallizer and the submerged entry nozzle 2 in FIG. 1.
Reference numbers in the figures: 1. an intermediate tank; 2. an immersion nozzle; 3. a crystallizer; 4. a crystallizer vibration device; 5. an inner tube cooling system; 6. an outer pipe secondary cooling spray cooling system; 8. a pinch roll; 9. a vertical flame cutter; 10. a steam and cutting fume collection device; 11. a water retaining and cutting slag collecting device; 12. cutting a slag box; 13. a casting blank clamping and lifting device; 14. and (4) a knockout cable-stayed trolley.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The embodiment of the utility model provides a crystallizer 3, including outer crystallizer and interior crystallizer, outer crystallizer has and holds the cavity, and interior crystallizer is cylindric structure, and interior crystallizer cover is established in outer crystallizer, and interior crystallizer can rotate for outer crystallizer, and the lateral wall upper end circumference of interior crystallizer is provided with and is used for letting in rapeseed oil in order to play the lubricating oil hole of heat transfer and lubrication action.
Rapeseed oil is injected through a lubricating oil hole in the inner crystallizer, the rapeseed oil can be carbonized under the action of a hot blank, an air gap between a blank shell and the inner crystallizer is filled, the heat transfer and lubricating effects are achieved, meanwhile, the inner crystallizer has a rotating function, and the inner crystallizer is combined with a carbon layer formed by the rapeseed oil to be beneficial to demolding and cooling, so that the inner crystallizer can be effectively prevented from being locked by a hollow casting blank.
The outer diameter of the inner mold is gradually reduced in the direction in which the molten steel flows through the inner mold. Specifically, the length of the inner crystallizer is 700 mm-900 mm, and the taper of the inner crystallizer is 0.5%/m-0.8%/m. The inner crystallizer is arranged to be of an inverted cone structure, so that a casting blank can be conveniently demoulded, and the inner crystallizer is not easily locked by the casting blank.
As shown in fig. 1 and 2, the utility model also provides a vertical hollow round billet continuous casting machine, including foretell crystallizer 3, vertical hollow round billet continuous casting machine still includes tundish 1, sets up the upstream position at crystallizer 3, and tundish 1 passes through immersion nozzle 2 and is connected with crystallizer 3. Wherein, the number of the submerged nozzles 2 is at least two, and the submerged nozzles 2 are symmetrically arranged at two opposite sides of the crystallizer 3.
Specifically, molten steel flows into the tundish 1 through a ladle and then enters the crystallizer 3 through the submerged nozzle 2, the submerged nozzle 2 is provided with two submerged nozzles which are respectively distributed on the left side and the right side of the crystallizer 3, as shown in the attached drawing 2, the holes of the submerged nozzle 2 are holes with one side, the molten steel forms anticlockwise circulation after coming out from the two submerged nozzles 2, slag inclusion and bubbles in the molten steel can float upwards through circulation motion, the temperature of the molten steel is uniform, the slag inclusion, air holes and microcracks on the surface of the continuous casting billet are reduced, the quality of the continuous casting billet is improved, the electromagnetic stirring effect is similar to that of the continuous casting billet, and the crystallizer does not need electricity.
As shown in fig. 1, the vertical hollow round billet continuous casting machine further comprises a mold oscillating device 4 disposed outside the mold 3 and capable of oscillating the mold 3. The crystallizer vibration device 4 can make the crystallizer 3 do the arc-like motion along the radius of the continuous casting machine according to the given amplitude, frequency and waveform deflection characteristics, so that the demolding is easier.
The embodiment of the utility model provides an in vertical hollow round billet conticaster still include two cold spray cooling systems 6 of outer tube and inner tube cooling system 5. The outer pipe secondary cooling spray cooling system 6 is arranged at the downstream position of the outer crystallizer, and the outer pipe secondary cooling spray cooling system 6 can cool the outer surface of the casting blank. An inner pipe cooling system 5 is provided at a downstream position of the inner mold, and the inner pipe cooling system 5 can cool the inner surface of the cast slab.
An outer pipe secondary cooling spray cooling system 6 is arranged at the casting blank position of the outer pipe after the solidified casting blank exits the outer crystallizer, the cooling configuration of the outer pipe secondary cooling spray cooling system 6 is consistent with that of the conventional round blank, and aerial fog cooling is adopted. An inner pipe cooling system 5 is arranged at the casting blank position of the inner pipe after the solidified casting blank is discharged from the inner crystallizer to cool the inner pipe of the casting blank, so that the situation that the return temperature of the casting blank is too high to cause steel leakage is prevented. The cooling medium of the inner pipe cooling system 5 is cooled by high-temperature steam without water, so that the molten steel is prevented from contacting with water and exploding after steel leakage.
The vertical hollow round billet continuous casting machine further comprises a pinch roll 8 which is arranged in the downstream direction of the outer pipe secondary cooling spray cooling system 6, and the pinch roll 8 can be matched with the outer surface of a casting billet to clamp the casting billet to move. In the embodiment, after the hollow casting blank has certain strength and thickness, the casting blank runs downwards through the clamping traction of the pinch roll 8.
Preferably, the vertical hollow round billet continuous casting machine further comprises a vertical flame cutter 9 arranged downstream of the pinch roll 8, and the vertical flame cutter 9 is capable of cutting the cast billet. After the cast slab reaches the set length, the cast slab is cut by the vertical flame cutter 9 to be divided into cast slab segments of the set length.
Further, the vertical hollow round billet continuous casting machine also comprises a water retaining and cutting slag collecting device 11 and a cutting slag box 12. The water retaining and cutting slag collecting device 11 is arranged below the vertical fire cutting machine 9, and the water retaining and cutting slag collecting device 11 is obliquely arranged with the horizontal plane. The cutting slag box 12 is arranged below the water retaining and cutting slag collecting device 11 and used for receiving cooling water and material slag, and a drain hole is formed in the bottom of the cutting slag box 12.
A water retaining and cutting slag collecting device 11 is arranged below a cutting gun of the vertical fire cutting machine 9, cutting slag and secondary cold water enter a cutting slag box 12 through the water retaining and cutting slag collecting device 11, a drain hole is formed in the bottom of the cutting slag box 12, and the drain water is collected and discharged through a submersible pump.
The vertical hollow round billet continuous casting machine also comprises a steam and cutting flue gas collecting device 10 which is arranged at the downstream direction of the pinch roll 8 and is positioned at the opposite side of the vertical flame cutting machine 9. The steam and cutting smoke collecting device 10 is used for collecting steam sprayed by the inner pipe cooling system 5 and smoke generated by cutting a casting blank by the vertical flame cutting machine 9.
The vertical hollow round billet continuous casting machine further comprises a casting blank clamping and lifting device 13 which is arranged at the downstream direction of the vertical flame cutting machine 9, and the casting blank cut off by the vertical flame cutting machine 9 is clamped to the discharging inclined pull trolley 14 through the casting blank clamping and lifting device 13.
The casting blank clamping and lifting device 13 clamps the casting blank before the vertical flame cutting machine 9 cuts the casting blank, the casting blank is moved downwards after the vertical flame cutting machine 9 cuts the casting blank, the casting blank is conveyed to the ejection diagonal trolley 14, the ejection diagonal trolley 14 conveys the casting blank to the horizontal position, and the casting blank is taken off the line through a conveying roller way or a crown block, so that the production of the casting blank is realized.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the production of hollow round billets is realized, the locking of the casting blank to the inner crystallizer copper pipe can be effectively avoided, and meanwhile, the rotation of the casting blank in the crystallizer is realized through the single-side hole opening of the double water ports, so that the quality of the casting blank is improved, and energy is saved.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and the technical scheme, all can the independent assortment use between technical scheme and the technical scheme.
Claims (10)
1. The utility model provides a crystallizer, its characterized in that, includes outer crystallizer and interior crystallizer, outer crystallizer has the holding cavity, interior crystallizer is cylindric structure, interior crystallizer cover is established in the outer crystallizer, interior crystallizer can for outer crystallizer rotates, just the lateral wall upper end of interior crystallizer is provided with and is used for letting in rapeseed oil in order to play the lubricated oil hole of heat transfer and lubrication action.
2. The mold according to claim 1, wherein an outer diameter of the inner mold is gradually reduced in a direction in which the molten steel flows through the inner mold.
3. The crystallizer of claim 2, wherein the length of the inner crystallizer is 700mm to 900mm, and the taper of the inner crystallizer is 0.5%/m to 0.8%/m.
4. A vertical hollow round billet continuous casting machine comprising the mold according to any one of claims 1 to 3, characterized in that it further comprises a tundish (1) disposed at a position upstream of the mold, the tundish (1) being connected to the mold through a submerged entry nozzle (2).
5. The vertical hollow round billet continuous casting machine according to claim 4, characterized in that the submerged entry nozzle (2) is at least two, and at least two submerged entry nozzles (2) are symmetrically arranged at two opposite sides of the mold.
6. The vertical hollow round billet continuous casting machine according to claim 4, further comprising:
the outer pipe secondary cold spray cooling system (6) is arranged at the downstream position of the outer crystallizer, and the outer pipe secondary cold spray cooling system (6) can cool the outer surface of the casting blank;
and the inner pipe cooling system (5) is arranged at the downstream position of the inner crystallizer, and the inner pipe cooling system (5) can cool the inner surface of the casting blank.
7. The vertical hollow round billet continuous casting machine according to claim 6, characterized by further comprising pinch rolls (8) arranged downstream of the outer pipe secondary cooling spray cooling system (6), wherein the pinch rolls (8) can cooperate with the outer surface of the cast billet to clamp the cast billet to move.
8. The vertical hollow round billet continuous casting machine according to claim 7, further comprising:
a vertical flame cutter (9) arranged downstream of the pinch roll (8), the vertical flame cutter (9) being capable of cutting the cast slab;
the water retaining and cutting slag collecting device (11) is arranged below the vertical flame cutting machine (9), and the water retaining and cutting slag collecting device (11) is obliquely arranged with the horizontal plane;
the cutting slag box (12) is arranged below the water retaining and cutting slag collecting device (11) and used for receiving cooling water and material slag, and a drain hole is formed in the bottom of the cutting slag box (12).
9. Vertical hollow round billet continuous casting machine according to claim 8, characterized in that it further comprises a steam and cutting fume collecting device (10) arranged downstream of the pinch rolls (8) and on the opposite side of the vertical flame cutter (9).
10. The vertical hollow round billet continuous casting machine according to claim 8, further comprising a billet holding lifter (13) provided downstream of the vertical flame cutter (9), wherein the billet cut by the vertical flame cutter (9) is held by the billet holding lifter (13) to a billet discharge stay trolley (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921886439.3U CN211360582U (en) | 2019-11-04 | 2019-11-04 | Crystallizer and vertical hollow round billet continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921886439.3U CN211360582U (en) | 2019-11-04 | 2019-11-04 | Crystallizer and vertical hollow round billet continuous casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN211360582U true CN211360582U (en) | 2020-08-28 |
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| CN201921886439.3U Active CN211360582U (en) | 2019-11-04 | 2019-11-04 | Crystallizer and vertical hollow round billet continuous casting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666115A (en) * | 2019-11-04 | 2020-01-10 | 中冶京诚工程技术有限公司 | Crystallizer and vertical hollow round billet continuous casting machine |
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- 2019-11-04 CN CN201921886439.3U patent/CN211360582U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666115A (en) * | 2019-11-04 | 2020-01-10 | 中冶京诚工程技术有限公司 | Crystallizer and vertical hollow round billet continuous casting machine |
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