Method of continuous casting by lower continuous casting machine with oscillating horizontal or incl

专利摘要:
Casting method and immersed teeming nozzle for a continuous casting machine of a reduced height with a horizontal or almost horizontal oscillatory crystallizer (16), whereby an immersed teeming nozzle (11) teems molten metal into the crystallizer (16) below the meniscus, regulation of the flow being obtained with regulation means (14), a pressure being kept within a tube portion (15) of the teeming nozzle (11) at least transiently which is correlated with the pressure surrounding the teeming nozzle (11) itself and with the pressure acting on the meniscus (17) of the molten metal in the crystallizer (16), the pressure within the tube portion (15) of the teeming nozzle (11) being such as will at least hinder the migration of gas from the exterior of the nozzle (11) to the inside of the bore of the tube portion (15).
公开号:SU1722217A3
申请号:SU884356545
申请日:1988-09-06
公开日:1992-03-23
发明作者:Тозини Риккардо；Баззарутти Альфредо
申请人:Даниэли Энд К.Оффичине Мекканике С.П.А. (Фирма)；
IPC主号:

专利说明:

The invention relates to the field of metallurgy, more specifically to a method for casting a liquid metal on a continuous casting machine of reduced height, and also relates to a device with a submerged outlet cup for supplying liquid metal to the inside of a mold of a machine.
The purpose of the invention is to improve the quality of molded products.
FIG. 1 shows a mold for a low-height continuous casting machine with the mold being almost horizontal; 2 and 3 show two possible discharge nozzles for metal casting; 4 is an outlet nozzle consisting of two portions; 5-7 are variants of the device for implementing the proposed method; 8 shows an embodiment of the process of degassing a molten metal.
The device contains a tundish 1 with an immersion glass
CJ
2 for casting a metal that connects the internal cavity 3 of the tundish 1 with the internal cavity of the mold 4.
Submersible glass 2 interacts with the device 5 in the form of a stopper, which regulates the flow of metal, and supplies the molten metal under the meniscus 6.
The stopper, when in position 5a, completely blocks the flow of molten metal from the internal cavity 3 of the tundish 1 to the internal cavity 7 of the tubular part of the glass 2.
The maximum movement of the adjusting device 5 in this example is indicated by the letter R.
The glass 2 has an opening in its tubular part with a diameter d and one outlet 8 with a diameter D. There can be several such openings.
The distance between the closed position of the stopper 5 and the meniscus 6 is indicated by the letter h.
The velocity V of the flow of molten metal through the outlet 8 must comply with the following inequality
V
K-Y2ghs in Figures 2 and 3 show two glasses 2, one of which is straight with an inclined inlet 8, and the other has a curvature coaxially with the outlet 8.
The density of the material from which the cup 2 is made may vary in the direction from the outer wall to the inner wall, or it may include concentric thicknesses of variable density or it may be uniform. In addition, the density of the material may also vary along the entire length of the outlet cup 2.
Figure 4 shows a cup 2, consisting of two parts 9 and 10, in order to provide the possibility of replacing the part that is most worn out.
The lower part 10 in this example consists of a lower zone 11, having a density and material composition different from that which is in the upper zone, this lower zone 11 interacts with a liquid bath in the crystallizer 4.
The two parts 9 and 10 are connected together by a connection 12, for which an appropriate locking mechanism must be provided.
The outlet 8 consists of a calibrated nozzle 13, which is in this at, -.




the measure must be replaced and fixed with the help of locking screws 14.
FIG. 5-7 a variant is shown in which the intermediate ladle 1 delivers the molten metal to the mold 4 through the cup 2, which interacts with the meniscus 6 of the molten metal in the mold 4. Camera 15 interacts with glass 2 and is formed by container 16, which
10 is attached to the bottom of the tundish 1, with this method the effect of negative pressure in the chamber 15 also spreads through the connecting lines 17 and the porous surrounding material.
15 Next, the container 16 is fixed in position 18 on the glass 2. Such a fastener 18 can be obtained by the interaction of taper elements 19 or cylindrical elements 20.
20 The sealing engagement of the clamping device 18 can be enhanced by using cement or other means.
It is possible to dismantle
25 container 16 in two or more parts.
The container 16 has an opening 21, which cooperates with the pump 22, which is necessary to create the desired level of vacuum. This pump is 22 of the type that
30 creates a negative pressure of the required level, and the heat exchanger 23, which performs the functions of cooling, as well as the dust separator 24 can be placed between the pump 22 and the chamber 15.
35 The vacuum created by the pump 22 in the chamber 15 should be at least such as to balance the vacuum created inside the opening of the tubular part of the cup 2.
40 Container 16 may be at least partially cooled.
In accordance with another embodiment, container 16 is at least a partial skin.
45 cups 2, it is installed with it in the slot 25, provided in the tundish 1.
7 shows another chamber 26 which has been provided for this
50 and which connects with the main chamber 15 through the channels 27.
Several cameras 15, one independent of the other, may be used and one of them may have performance characteristics, i.e. 55 The value of pressure or vacuum is different from these values in other chambers.
By changing the vacuum level in chamber 15 and affecting
thus, on the porosity of glass 2, one can obtain the effect of degassing or evacuating the gas dissolved in the molten metal, thereby purifying the liquid metal entering the crystallizer from a significant part of this gas.
Fig. 8 shows a cup 2 consisting of two separate parts in order to create one or more coupling rings between the hole in the tubular part of the cup 2 and the inner cavity of the chamber 15.
Instead of using these bonding rings, it is possible to provide bonding holes or a ring having a significantly reduced density, and a more elongated channel in the tubular portion of the cup, matched with holes or a ring having a significantly reduced density.
The use of the proposed outlet cup will improve the quality of the molded products by degassing the molten metal passing through it.

权利要求:
Claims (15)
[1]
Claim 1. The method of continuous casting on a machine of continuous casting of reduced height with oscillating horizontally or inclined located crystallizer, including the supply of liquid metal in the crystallizer under the meniscus through a submersible outlet cup and controlling the flow rate of liquid metal through its channel by means of a stopper, characterized in that in order to improve the quality of molded products, a pressure is established inside the channel of the submersible outlet glass that prevents gas migration from outside oh glass surface, and the velocity v of the liquid expiration metal- la at the outlet of the immersion nozzle is controlled in accordance with the following mathematical relationship:
V to
T2gh
Ј P
m / s
where K is an experimental coefficient equal to 0.75 ... 0.85, depending on the physical properties of the steel and the physical and geometric characteristics of the immersion cup and the shape of its internal channel;
h — distance between the lower end of the stopper and the level of the meniscus in the mold, m;
p is the difference between the pressure on the meniscus of the liquid metal in the mold and the pressure in the tundish;
p is the density of the liquid metal, kgf / m.
[2]
2. A method according to claim 1, characterized in that a pressure is established inside the channel of the immersion nozzle, which exceeds the pressure on its outer surface.
[3]
3. A device for feeding metal in a continuous casting machine of reduced height with an oscillating horizontal or inclined crystallizer, which is installed in the bottom
An intermediate pouring ladle, an immersion nozzle with an outlet nozzle and a stopper, characterized in that, in order to improve the quality of the molded products, it contains a means for eliminating the migration of gas from the outer surface of the immersion nozzle into its internal cavity.
[4]
4. The device according to p. 3, of which is that the submersible glass is made straight with a beveled output end.
[5]
5. The device according to p. 3, characterized in that the longitudinal axis of the submersible tumbler has a curved shape.
[6]
6. The device according to Section 3, which differs from the fact that the immersion glass is made of
two interconnected parts
[7]
7. The device according to item 3, is distinguished by the fact that a removable calibrated nozzle is installed in the output part of the submersible glass.
[8]
8. The device according to claim 3, characterized in that the means for avoiding gas migration is made in the form of a chamber installed around the immersion cup connected to a vacuum pump.
[9]
9. The device according to claim 8, characterized in that the chamber is installed with a hollow in the bottom of the tundish.
[10]
10. The device according to claim 8, characterized in that the chamber is made at least
least partially cooled.
[11]
11. The device according to Clause 3, with the fact that the means for eliminating the migration of gas is made in the form of several chambers connected around each other.
[12]
12. The device according to claim 11, which is such that the chambers are independent.
[13]
13. The device according to claim 8, characterized in that a heat exchanger is installed between the vacuum pump and the chamber.
[14]
14. The device according to claim 8, characterized in that between the vacuum pump and
The camera has a dust separator installed.
[15]
15. The device according to Clause 3, characterized in that the immersion nozzle is sealed.
16, The device according to pts and 15, that is, with the fact that the material with the increased density is used as the material of the glass.
17, the device according to p. 3 and 15, excluding the fact that the glass is fitted with a plating,
18, a device according to claim 17, wherein the skin is covered with insulating varnish.
19, A device according to claim 17, characterized in that the skin is connected to a glass,
Priority points: 07/29/88 pop. 2-7; 11/05/87 pop.1; 07.09.87 popp. 8-19.
J
FIG. 2
M
FIG 4
18
ngo
FIG. 6
FIG. five
FIG. 7
FIG. 9

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引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US2734241A|1956-02-14|Vacuum pouring apparatus |

---

BE521284A|

---

FR808711A|1935-08-17|1937-02-13|Dortmund Hoerder Hu Ttenver Ag|Process for deoxidizing steels during casting and preventing air from coming into contact with the casting jet|

---

DE843137C|1942-04-14|1952-07-07|Wieland Werke Ag|Pipe feed for the molten material for the continuous casting of metals|

---

US2379401A|1942-04-16|1945-06-26|American Steel Foundries|Method and apparatus for casting metal|

---

DE872634C|1942-06-05|1953-04-02|Wieland Werke Ag|Pipe feed for the molten material for the continuous casting of metals|

---

US2544598A|1948-02-28|1951-03-06|Wetherill Engineering Company|Metal casting mold|

---

CH403172A|1963-07-05|1965-11-30|Moossche Eisenwerke Ag|Device for continuous casting of metal|

---

GB1157818A|1965-09-23|1969-07-09|United States Steel Corp|Nozzle Extension for Continuous Casting|

---

GB1166334A|1967-01-24|1969-10-08|Ural Zd Tyazhelogo Mash Im S O|Continuous Casting Method.|

---

LU56211A1|1968-06-05|1970-01-14|

---

SU396166A1|1971-05-17|1973-08-29|изобретени В. А. Салаутин, В. И. Сарамутин, А. Б. Вайнштейн, Е. С. лин, В. П. Горшков, С. В. Колпаков, Н. Д. Карпов, Н. Т. Никокошев, В. К. Бобокин , Б. И. Пономарев|GLASS FOR CONTINUOUS STEEL RATING|

---

GB1379236A|1972-07-27|1975-01-02|Singer A R E|Nozzles for molten metals|

---

CH570217A5|1974-08-15|1975-10-31|Koenig Peter|Continuous casting mould pouring tube - having slotted end after restricting refractory ring for better gas, metal mixing|

---

FR2333599B1|1975-12-02|1979-01-19|Daussan Henri|

---

CA1130983A|1979-07-18|1982-09-07|Her Majesty In Right Of Canada As Represented By The Minister Of Energy, Mines And Resources|Method and apparatus for continuouslycasting molten metal|

---

SU884844A1|1980-02-18|1981-11-30|Всесоюзный Научно-Исследовательский Институт Автоматизации Черной Металлургии|Method of automatic regulating of metal level in continuous casting machine mould|

---

FR2480156B2|1980-04-15|1982-04-23|Creusot Loire|

---

EP0059805B1|1981-03-11|1985-02-13|Junichi Ato|Porous nozzle for molten metal vessel|

---

FR2541915A2|1982-02-15|1984-09-07|Poncet Pierre|Device for supplying metal into continuous-casting ingot moulds|

---

FR2521462B1|1982-02-15|1984-06-01|Poncet Pierre|

---

SU1097439A1|1982-06-21|1984-06-15|Центральный Научно-Исследовательский Институт Черной Металлургии Им.Бардина И.П.|Device for protecting metal jets in continuous casting|

---

DE3331575C2|1983-09-01|1986-07-31|Mannesmann AG, 4000 Düsseldorf|Process for continuous arc casting of metal, in particular steel|

---

US4588112A|1984-02-06|1986-05-13|Akechi Ceramics Kabushiki Kaisha|Nozzle for continuous casting|

---

SU1282954A1|1984-07-27|1987-01-15|Краматорский Научно-Исследовательский И Проектно-Технологический Институт Машиностроения|Method of feeding molten metal to the mould of continuous casting machine|

---

JPS6167548A|1984-09-10|1986-04-07|Harima Refract Co Ltd|Immersion nozzle for continuous casting|

---

IT1181219B|1984-09-17|1987-09-23|Danieli Off Mecc|CONTINUOUS CASTING WITH MULTI-PURPOSE AGITATORS|

---

IT1187604B|1985-12-23|1987-12-23|Danieli Off Mecc|REFINEMENTS FOR CRYSTALLIZERS FOR CONTINUOUS SUB-HORIZONTAL CASTING AND CRYSTALLIZERS SO PERFECTED|US4972900A|1989-10-24|1990-11-27|Hazelett Strip-Casting Corporation|Permeable nozzle method and apparatus for closed feeding of molten metal into twin-belt continuous casting machines|

---

FR2666258A1|1990-08-31|1992-03-06|Siderurgie Fse Inst Rech|Liquid metal supply nozzle for a continuous casting ingot mould|

---

DE4034652A1|1990-10-31|1992-05-07|Didier Werke Ag|CONNECTION BETWEEN SPOUT AND PIPE PIPE ON METALLURGICAL VESSELS|

---

FR2695848B1|1992-09-21|1994-12-09|Lorraine Laminage|Metal casting nozzle and methods of manufacturing this nozzle.|

---

US8527026B2|1997-03-04|2013-09-03|Dexcom, Inc.|Device and method for determining analyte levels|

---

DE19711116C2|1997-03-05|1999-05-12|Mannesmann Ag|Method and device for casting thin strands|

---

AU2251699A|1998-07-31|2000-02-24|Ltv Steel Company, Inc.|Preventing pencil pipe defects in steel|

---

AU6831601A|2000-06-23|2002-01-08|Vesuvius Crucible Co|Continuous casting nozzle with pressure modulator|

---

KR20030054769A|2001-12-26|2003-07-02|주식회사 포스코|A continuously casting method for low air inclusions in slab|

---

JP6154708B2|2013-09-27|2017-06-28|日新製鋼株式会社|Continuous casting method|

---

CN103537483B|2013-10-16|2016-02-03|河南科技大学|A kind of preparation method of Copper-Aluminum compound strip and complex plate strip casting apparatus|

---

DE102015215187A1|2015-08-10|2017-02-16|Sms Group Gmbh|Melt metallurgical plant comprising a mold|

---

CN112317693A|2020-11-13|2021-02-05|四川共享铸造有限公司|Casting system|

法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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IT8345287A|IT1214218B|1987-09-07|1987-09-07|Teeming nozzle for low height casting machine|

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IT8348887A|IT1221721B|1987-11-05|1987-11-05|Teeming nozzle for low height casting machine|

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IT8346388A|IT1227125B|1988-07-29|1988-07-29|Teeming nozzle for low height casting machine|

---