CN201186344Y - Flow-distributing device with compressed wall surface for continuous casting thin belt - Google Patents
Flow-distributing device with compressed wall surface for continuous casting thin belt Download PDFInfo
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- CN201186344Y CN201186344Y CNU2008200577714U CN200820057771U CN201186344Y CN 201186344 Y CN201186344 Y CN 201186344Y CN U2008200577714 U CNU2008200577714 U CN U2008200577714U CN 200820057771 U CN200820057771 U CN 200820057771U CN 201186344 Y CN201186344 Y CN 201186344Y
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Abstract
The utility model relates to a wall surface compression type stream distributing device which is used in thin strip continuous casting, is connected with a bakie, and comprises a water gap with a straight cylindrical shape and a turbulence repressing slot which is connected with the lower end of the water gap and is a box structure, wherein a connecting through hole which is communicated with the water gap is arranged on an upper end plate and a plurality of emerging holes for overflow are arranged on the upper end plate along the length direction, the wall surface compression type stream distributing device also comprises a stream distributer which is a box with an opening on the upper end and is provided with spitting holes or slits which are used for liquid steel to flow out on two sides of the lower portion, wherein the turbulence repressing slot is inserted in the box structure of the stream distributer and keeps a certain gap with the inner wall of the stream distributer, which enables the liquid steel which is overflowed from the turbulence repressing slot to enter the stream distributer. The wall surface compression type stream distributing device realizes that molten steel streams are stably distributed into a molten bath, changes a bottom steel-taping mode of the stream distributer, reduces chances that the subsequent rolling process forms the defects such as split cracks and the like, realizes that the temperature in the molten bath is evenly and rationally distributed, reduces the chances that molten steel produces cold steel on the current distributer, a side dam and other positions, also can reduce transitional bag mechanisms, reduces the consumption of refractory materials, and thereby reducing the production cost.
Description
Technical field
The utility model relates to the twin-roll thin strip continuous casting field, and particularly thin strap continuous casting is with wall compressing type flow distribution device.
Background technology
Twin-roll thin strip continuous casting is that the casting rolls that rotates with two rightabouts is a crystallizer, and liquid metal is directly produced the growth technique of thickness less than 10mm strip steel.Compare with traditional strip production technology, this technology has shortened process, energy savings, reduces production costs and improves advantages such as made-up belt mechanical property, so this technology is considered to one of the most promising near net shape continuous casting technology of 21 century.
Strip casting process is one and not only had been related but also distinguishing strip casting process with traditional continuous casting.Its main technique is after molten steel is injected into tundish, by the mouth of a river molten steel is assigned in the current distribution device, be injected in the bath that two water-cooled crystallization rollers and side seal board surround by current distribution device again, molten steel solidifies gradually on the surface of two crystallization rollers and forms the base shell, after solidifying fully near two crystallization roller lines, rolling effect takes place in the backward rotation by two rollers, forms the compact metal band with certain thickness and width.
Reasonably the cloth streaming system has very important significance for twin-roll thin strip continuous casting.This is because the cloth streaming system directly has influence on the quality of strip product, and according to the literature, bath liquid fluctuating amplitude surpasses ± and during 2mm, longitudinal crack will appear in made-up belt; But bath liquid level fluid mass is too tranquil, is unfavorable for the renewal of bath top molten steel again, causes the liquid level crust easily, and therefore how keeping the balance between the two is to water the precondition that outpours qualified strip.
Disclosed distributors such as No. the 6073680th, 5857514,6125917,6012508, United States Patent (USP), it is positioned at the below of tundish, shape such as little tundish.The molten steel that is flowed into by tundish flow in the current distribution device of below by a narrow slit of the other end, and the end of this current distribution device is square, and the end does not have the cloth discharge orifice.
Such current distribution device form has following deficiency:
1. structure is more, has increased the extra transit link of equipment;
2. the increase of middle transition bag will increase its installation difficulty, need be equipped with other mechanism when landing;
3. because molten steel directly drops in the current distribution device of below by narrow slit, and the fluctuation of the current distribution device inside that excessive drop causes is also bigger, put down the effect of rapids;
Japan Patent JP1317658 has announced a kind of current distribution device, at porous refractory plate of the bottom of current distribution device tiling, after molten steel flows out by the mouth of a river of tundish, at first arrive on the porous refractory plate, the porous material plate has flat preferably rapids effect, then molten steel flows into the current distribution device bottom by aperture, flows out in the molten steel bath by aperture.
The main deficiency of this patent is:
Although 1 porous refractory plate has well flat rapids effect, under the pouring condition of big flow, high pulling rate, current distribution device takes place excessive because the steel-passing amount of refractory plate is limited easily;
2, the porous refractory plate is carried molten steel by micropore, runs into the molecule field trash in the molten steel, will form obstruction, influences the throughput of molten steel gradually;
3, can the porous refractory plate suitable passes through the molten steel checking of still needing.
Summary of the invention
The purpose of this utility model is to design a kind of thin strap continuous casting with wall compressing type flow distribution device, realize that molten steel stream can be distributed in two baths between the crystallization roller stably, change the bottom tapping mode of current distribution device simultaneously, make follow-up rolling process form the chance minimizing of defectives such as lobe; Realize the evenly distribution rationally of temperature in the bath, reduce molten steel in the cold steel chance of the knot of positions such as current distribution device and side seal board.Adopt novel cloth stream scheme also will reduce the transition turn-up mechanism, links such as the transportation of minimizing equipment and preparation are for the installation of current distribution device provides bigger leeway; New current distribution device system also will reduce the consumption of refractory material, thereby reduce production costs.
For achieving the above object, the technical solution of the utility model is,
Thin strap continuous casting connects tundish with wall compressing type flow distribution device; It comprises, the mouth of a river, and it is shaped as straight barrel type; Press down rapid groove, be connected in lower end, the mouth of a river, it is a body structure, and upper head plate has the connecting through hole that is communicated with the mouth of a river, and upper head plate has some emitting of overflow of confession along its length and portals; Current distribution device, it is the casing of a upper end open, and the both sides, bottom have spue hole or the slit that flows out for molten steel, and but described rapid groove is inserted in the current distribution device body structure, press down rapid groove and current distribution device inwall and keep certain interval, make from pressing down rapid groove overflow molten steel and enter current distribution device.
Again, but described rapid groove inner chamber lower sides is the inclined-plane.
In addition, the place, the corresponding mouth of a river of rapid groove intracavity bottom that presses down described in the utility model establishes buffer stopper.
Press down in rapid groove is enclosed in order to the high speed metal liquid stream that the mouth of a river is flowed out, only go out by the upper head plate orifice flow of emerging; Leave certain clearance with current distribution device around pressing down rapid groove, in order to pass through molten steel, current distribution device is inserted into certain distance in the molten steel bath, keep certain width simultaneously between current distribution device and the crystallization roller, so that molten steel can upgrade in bath smoothly, counter-rotation between the crystallization roller, the rolling molten steel that solidifies forms strip.
In actual mechanical process, molten steel in the tundish is injected into by the mouth of a river and presses down in the rapid groove, after molten steel mixes fully in pressing down rapid groove, go out by the orifice flow of emerging between the upper head plate, molten steel is along pressing down space between rapid groove and the current distribution device to dirty then, the back goes out from the orifice flow that spues of current distribution device bottom arriving, and forms the metal bath; Because the molten metal flow of inside, the mouth of a river is very big, so the flow when overflowing from the rising head that presses down rapid groove is also very big, and the space that presses down between rapid groove and the current distribution device inner chamber remains on certain width, molten steel is at a large amount of mouths of gushing out like this, to form liquid level in the inside of current distribution device, and this liquid level also will cover the whole rapid groove that presses down, so far, make the turbulence of molten steel only carry out pressing down rapid groove top, very little to the spue influence in hole of bottom current distribution device.
The beneficial effects of the utility model
(1) mechanism is simple, has saved the link of transition bag, has saved operation and refractory material;
(2) because molten steel has carried out sufficient mixing and has been full of in pressing down rapid groove, avoided the segregation of temperature and molten steel component;
(3) since the turbulence major part of molten steel all carry out pressing down rapid groove inside, the molten steel kinetic energy that flows out from rising head reduces greatly, the slit that presses down between rapid groove and the current distribution device inner chamber is limited in addition, molten steel will form higher liquid level in that current distribution device is inner, and the spue influence in hole will be very little so the turbulence effect on top is to the bottom current distribution device;
(4) press down the rapid groove and the mouth of a river and be fixed together, step is simple in actual mechanical process, and is easy for installation;
(5) press down the landing simultaneously of the rapid groove and the mouth of a river, make that the interior melting steel amount of current distribution device is adjustable, increased the flexibility of mechanism.
Description of drawings
Fig. 1 is the stereogram of the utility model one embodiment;
Fig. 2 is the structural representation of the utility model one embodiment;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the A-A profile of Fig. 3;
Fig. 5 is the B-B profile of Fig. 3;
Fig. 6 presses down the stereogram of rapid groove for the utility model.
The specific embodiment
Referring to Fig. 1～Fig. 6, the utility model thin strap continuous casting connects tundish with wall compressing type flow distribution device; It comprises, the mouth of a river 1, and it is shaped as straight barrel type; Press down rapid groove 2, be connected in 1 lower end, the mouth of a river, it is a body structure, upper head plate 21 has the connecting through hole 211 that is communicated with the mouth of a river 1, upper head plate 21 has some emitting of overflow of confession along its length and portals 212, and pressing down rapid groove 2 inner chamber lower sides 22 is the inclined-plane, and place, the 23 corresponding mouths of a river, bottom establishes buffer stopper 231; Current distribution device 3, it is the casing of a upper end open, and the both sides, bottom have spue hole 31 or the slit that flows out for molten steel, and but described rapid groove 2 is inserted in current distribution device 3 body structures, press down rapid groove 2 and keep certain interval, make from pressing down rapid groove 2 overflow molten steel and enter current distribution device 3 with current distribution device 3 inwalls.
Molten steel enters tundish by ladle, and pass through the mouth of a river 1 inflow and press down rapid groove 2, molten steel portals and 211 overflows from pressing down emitting of rapid groove 2 upper head plates 21 again, enter current distribution device 3, current distribution device 3 is inserted into certain distance in the molten steel bath 4, keeps certain width simultaneously between current distribution device 3 and the crystallization roller 5, so that molten steel can upgrade in bath smoothly, counter-rotation between the crystallization roller 5, the rolling molten steel that solidifies forms strip.
Claims (3)
1. thin strap continuous casting connects tundish with wall compressing type flow distribution device; It is characterized in that, comprise,
The mouth of a river, it is shaped as straight barrel type;
Press down rapid groove, be connected in lower end, the mouth of a river, it is a body structure, and upper head plate has the connecting through hole that is communicated with the mouth of a river, and upper head plate has some emitting of overflow of confession along its length and portals;
Current distribution device, it is the casing of a upper end open, and the both sides, bottom have spue hole or the slit that flows out for molten steel, and but described rapid groove is inserted in the current distribution device body structure, press down rapid groove and current distribution device inwall and keep certain interval, make from pressing down rapid groove overflow molten steel and enter current distribution device.
2. thin strap continuous casting as claimed in claim 1 is characterized in that with wall compressing type flow distribution device but described rapid groove inner chamber lower sides is the inclined-plane.
3. thin strap continuous casting as claimed in claim 1 or 2 is characterized in that with wall compressing type flow distribution device the described place, the corresponding mouth of a river of rapid groove intracavity bottom that presses down establishes buffer stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200577714U CN201186344Y (en) | 2008-04-25 | 2008-04-25 | Flow-distributing device with compressed wall surface for continuous casting thin belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200577714U CN201186344Y (en) | 2008-04-25 | 2008-04-25 | Flow-distributing device with compressed wall surface for continuous casting thin belt |
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| Publication Number | Publication Date |
|---|---|
| CN201186344Y true CN201186344Y (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200577714U Expired - Lifetime CN201186344Y (en) | 2008-04-25 | 2008-04-25 | Flow-distributing device with compressed wall surface for continuous casting thin belt |
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| CN (1) | CN201186344Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704071B (en) * | 2009-11-03 | 2011-10-26 | 上海大学 | Direct impact flow stabilizing and distributing device for continuously casting thin strip |
| CN110976791A (en) * | 2019-12-28 | 2020-04-10 | 西南铝业（集团）有限责任公司 | Self-spinning shunting bag and aluminum alloy casting method |
-
2008
- 2008-04-25 CN CNU2008200577714U patent/CN201186344Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704071B (en) * | 2009-11-03 | 2011-10-26 | 上海大学 | Direct impact flow stabilizing and distributing device for continuously casting thin strip |
| CN110976791A (en) * | 2019-12-28 | 2020-04-10 | 西南铝业（集团）有限责任公司 | Self-spinning shunting bag and aluminum alloy casting method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |
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| CX01 | Expiry of patent term |