Mould and method of continuous vertical casting of steel band

专利摘要:
The invention relates to ferrous metallurgy and can be used for continuous casting of steel tapes in molds. The purpose of the invention is to increase the reliability of the mold and the quality of continuously cast tape. The mold is made conical in the upper part with an inclination of less than 10 ° C. and contains wide 1 and 2 and narrow 3 and 4 side walls, for cooling of which cavities with pipes for supplying 6 and draining 7 of water are provided. The narrow walls 3 and 4 are intermixed between wide 1 and 2 with the help of spindles 8. The wide 1 and 2 side walls at the ends are parallel with the width of these sections equal to the thickness of the tape obtained. The cast tape is pulled at a speed of 3-6 m / min, and at the end of the conical part of the mold, the thickness of the hardened crust is supported not more than 6 mm. 2 sec. and 7 3. p. f-ly, 5 ill. i CO p p 00 with O) 4 CO cm
公开号:SU1336943A3
申请号:SU843817606
申请日:1984-12-03
公开日:1987-09-07
发明作者:Колаковски Манфред；Штройбель Ханс
申请人:Смс Шлемман-Зимаг Аг (Фирма)；
IPC主号:

专利说明:

11336943
The invention relates to ferrous metallurgy, and more specifically to the continuous casting of steel tapes.
The purpose of the invention is to increase the reliability of the operation of the mold and the quality of continuous tape.
FIG. shows a continuous casting mold for the manufacture of steel tapes, top view; in d of fig. 2 - the same, side view; in fig. 3 - the same, longitudinal section; in fig. 4 - the edge of the tape hardened in the form of a trapezium; in fig. 5 - the crystallizer mold serves steel with a temperature of 560 ° C, the belt drawing speed is 4 m / min, the cooling intensity in the mold is set at the top of 1500 kcal / m x X h hail., in the lower part - 1000 kcal / m h - hail., the temperature of the surface of the tape at the exit of the mold support 1300 ° C. The thickness of the crust in the cone of the upper conical part is 5 mm, and at the exit from the mold - 7.5 mm.
The invention allows to increase
20
The reliability of the crystallizer and ka ribbon operation in the form of a chrome rectangle.
Crystallization ator for continuous casting contains two opposite wide walls 1 and 2 and two narrow side walls 3 and 4 located between the parallel parts of the wide sides 1 and 2 and forming the working cavity. In order to cool the wide side walls 1 and 2, cavities 5 are provided in them, to which pipelines are connected 25 for supplying 6 and discharging 7 coolant. The narrow walls 3 and 4 cooled in the same way are moved between the wide side walls 1 and 2 with the help of spindles - 30 - l 8.
To the middle, the wide side walls 1 and 2 form a funnel-shaped zone 9, into which pipe 10 enters, through which the liquid steel 11 is fed. ), due to which it is possible to overcome the shortcomings of the ribbon edge sticking in the form of a trapezoid (Fig. 4). The swing device is indicated by the arrow 13.
to obtain steel tape with good quality of the structure and surface due to the exclusion of the trapezoid solidification of the crust in the zone of the inclined wide walls of the mold and its wedging between the parallel sections of the side walls.

权利要求:
Claims (9)
[1]
1. A continuous vertical casting mold for a steel strip containing cooled wide and narrow side walls, the wide side walls of which in the upper part are made with an angle of inclination to the vertical of less than 10 °, tapered down to the size of the resulting tape, and form a working cavity of conical shape, characterized in that with. the purpose
35 to increase the reliability of the mold and the quality of continuously cast tape, the ends of the wide side walls are made parallel, and their width is at least equal to the thickness of the resulting tape.
[2]
2. A crystallizer according to claim 1, characterized in that the wide side walls of the conical part
the crystallizer is made arcuate-Korochka 12, freezing in the zone of the 45th.
40
when stretched and contracted, it deforms into a strip of thickness d. In order to maintain the minimum bending deformation resulting from the hardening crust I2, it is necessary that all the angles of the pouring area affecting the deformation be less than 10 °.
Example. Cristallizer for steel casting is made with a length of 1000mm and a width of 1000mm, its conic part has a length of 550 mm, an inclination angle of 8, a maximum width of 205 mm, a width of the parallel part of wide side walls is 50 mm.
Steel with a temperature of 560 ° C is fed to the mold, the belt drawing speed is 4 m / min, and the cooling intensity in the mold is set at the top of 1500 kcal / m x X h. hail., in the lower part - 1000 kcal / m h - hail., the temperature of the surface of the tape at the exit of the mold support 1300 ° C. The thickness of the crust in the cone of the upper conical part is 5 mm, and at the exit from the mold - 7.5 mm.
The invention allows to increase
[3]
3. The mold under item 1,
about t
the fact that the side walls of the mold in the upper part are made of a material with lower thermal conductivity and greater heat resistance than the material of the lower part.
[4]
4. The crystallizer according to claim 1, characterized in that
55 side walls are made with a thermal conductivity of not more than 50% of the thermal conductivity of copper.
[5]
5. The crystallizer according to claim 1, characterized in that
313
the narrow side walls are adapted to move in the zone of parallel portions of the wide walls.
[6]
6. A crystallizer according to claim I, characterized in that it further comprises a drive and a swing guide.
[7]
7. A method of continuous vertical casting of steel tape, predominantly less than 60 mm thick, in a mold with a conical shape of the upper part of its working cavity, including the supply of liquid steel to the mold, cooling, forming a hardened crust of the workpiece and pulling it out of the mold, characterized in .
in order to increase the reliability of the mold and the quality of the continuous casting tape, stretching the crust of the preform formed at the end of the conical part of the mold up to 6 mm thick is carried out at a speed of at least 3-6 m / min,
[8]
8. A method according to claim 7, characterized in that lubricants are supplied in the zone of parallel portions of the wide walls.
[9]
9. The way rion. 7, characterized in that in the zone of parallel sections of the wide walls, the melt meniscus is heated.
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Compiled by L. Dymshits Editor G. Volkova Tehred L. Serdyukova Proofreader A. Zimokosov
4057/59
Circulation 740 Subscription
VNIIPI USSR State Committee
for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
Production and printing company, Uzhgorod, st. Design,
fig 5

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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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DE3400220A|DE3400220C2|1984-01-05|1984-01-05|

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