DE1508786A1 - Method and device for the continuous casting of steel - Google Patents

Description

V / Gd 14 522

Oct 24, 1966

Lawyer file no. 14 522

Biuro Projektßw Przemysiu Hutniozego ⁿ BIPROHÜT ^H QLIfIOS / Poland.

"Method and Apparatus on Strangleaeen of Steel. ¹¹

The invention relates to a method and a device for continuous casting of steel.

The method of continuous casting according to the invention exists in the fact that the steel from a pouring pan · in a closed Qefäes, in which an over »

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pressure prevails, and through a funnel made of fire-resistant material immersed in the steel into a crystallizer is printed, the strand being pulled out of the crystallizer after solidification and, if necessary, in sections appropriate length is cut. In the process according to the invention, the crystallizer takes a horizontal one or almost horizontal position.

The previously known methods consist in pouring the metal into the crystallizer from above in an open manner below Action of gravity, the crystallizer having a vertical or inclined position and the pouring opening is arranged above the crystallizer

Pouring the metal into a crystallizer through the atmosphere, in particular, has the defects that the metal oxidized and since the system is arranged vertically, deep wells are required, which results in high investment costs.

These disadvantages are alleviated by the method according to the invention eliminated.

The method of the invention is characterized in that • a pouring ladle with liquid metal is introduced into a tight, separable container "" so that the metal located in the ladle under the action of the

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BATH ORIGINAL

Container generated overpressure by being immersed in the metal ceramic end piece into a siphon tube and then through a funnel to a graphite crystallizer and further to a copper crystallizer cooled with water

flows, and from which the already partially solidified strand is passed through a zone of secondary cooling that then the strand is pulled out by means of a displacement device and on a removal table with a cutting torch or with another cutting device into individual strands, if desired Length is separated, and that a hydraulic lifter raises the ladle so far when it is emptied that the The end piece always remains immersed in the metal bath.

Another object of the invention is a device for carrying out the method, which is characterized by the fact that a separable container is provided, in the lower part of which there is a platform which can preferably be raised by a hydraulic lifter and accommodates a pouring ladle (

is arranged, and its cover can be connected to the lower part by a seal and lock dloht, that the cover has a ball joint through which a siphon tube provided with an end piece is guided, wherein the other end of the siphon pipe leads into a sprue which connects the siphon pipe with a graphite crystal that the graphite crystallizer is followed by a water-cooled copper crystallizer in front of j ...; t ..

6/0207 ** ß original

that a device for secondary cooling is arranged with support rollers on which the strand is transported, wherein this device has water nozzles of known construction, and that a device for transporting of the strand on a Abnähmetiach with a cutting device arranged to separate the strands into individual partial lengths is.

The method sum continuous casting of steel and the device for performing the method according to the invention are explained in more detail with reference to the accompanying drawing.

Fig »! Seigt a longitudinal section of the device. The reference symbols used in the ^{1st year} "have the following 3edeufraßg 2 Soiiaiaötteauekleid 1 of the lower part of the container", "oak" to cast the metal from the Giessij & ö: iiifae & !? l ± oh istj lifter 2, which isoii Iömi? ^ Jaen cylinder 21 is actuated with "- · - ■■ liquid metal-filled ladle; ■. '*:..? 38pfanne 3y supply pipe 4 for inert''. \ ^ _1' eiift feile the container connecting ^r - Abdichtungj lower part 6 of the container \ 1 eirigetauciitee ceramic end piece T screen 8f lid "dee container 1Oj j.yaonro'ars 12? Sprue 13 of the metal? 'ν' Uj copper crystal ator 15 with water-22i style. «roll I6j housing 18

BAD ORiG'.MAL

the secondary cooling and cooling nozzles 17; Feed drive mechanism 19 and cutting mechanism 20 for the strand and take-off table for strands 25. In addition, the device has a look * opening 9 on, ■

The 'method for continuous casting according to the invention exists in that the pouring ladle 3 is introduced with the liquid metal in the lower part of the container 6 and on the Plate 2 of the hydraulic jack 21 is set up. Then the container is covered with the lid 10 and the lock 5 locked, the end piece 7 of the siphon tube 12 being immersed in the liquid metal and through the feed nozzle 4 inert gas or air to create an appropriate overpressure is fed.

Under the influence of the pressure difference in the container 6 and in the surrounding atmosphere, the metal becomes the sprue 13 and the sprue through the end piece 7 and the siphon pipe 12 Graphite crystallizer 14 pressed} then this arrives Metal after partial solidification to with through nozzle 23 and 22 running water-cooled copper crystallizer 15. Then the strand resting on the support rollers becomes a subjected to further cooling in the chamber 18 for secondary cooling to a direct water jet. Then the strand transported by the device 19 of known construction to the removal table, where it is in a known manner by means of a

909846/0207

BATH ORIGINAL * ⁶ "

Cutting torch 20 or another cutting device is separated into individual strands of appropriate length.

To the same extent as the metal mirror in the pouring ladle 3 sinks, the hydraulic cylinder 21 lifts the ladle 3 so that the end piece 7 of the siphon pipe 12 is always in the metal bath remains immersed

Patent claims:

909846/0207 BAD

Claims (1)

Pa'tent.ans ρ r ü ehe: 1. A method for the continuous casting of steel, characterized in that a pouring ladle (3) with liquid metal in a tight separable container (6) and (10) is introduced that the metal in the pouring ladle under the action of the generated in the container Overpressure through a ceramic end piece (7) immersed in the metal into a siphon pipe (12) and then through a funnel (13) to a graphite crystallizer (14) and further to a water-cooled copper crystallizer (15) and from which the already partially The solidified strand is passed through a zone (18) of secondary cooling so that the strand is then pulled out by means of a shifting device (19) and separated into individual strands of the desired length on a removal table (24) with a cutting torch (20) or with another cutting device , and that a hydraulic Haber (21) raises the ladle (3) when it is emptied so that the end piece (7) is always in the metal bath - eiEga * · dives stays. . ' . . 2 * device for carrying out the method according to claim. 1> characterized in that a separable Bo «holder is provided, in the lower part of which {6} - a platform (2) that can be raised by a hygienic lifter (21) to hold a G-pan (?) Aageordriit iit _? BATH ORIGINAL 909846/020 7 and its cover (10) can be tightly connected to the lower part by a seal and lock (5) that the cover (10) has a ball joint (.11) through which a siphon tube provided with an end piece (7) is guided, wherein the other end of the siphon pipe leads into a sprue (13), which connects the siphon pipe (12) with a graphite crystallizer (14) that a graphite crystallizer downstream water-cooled copper crystallizer (15) is provided that a device for secondary cooling (18) is arranged with support rollers (16) on which the strand is transported, this device being water nozzles (17) of known construction, and that a device (19) for transporting the strand to a removal table (25) with a separating device (20) for separating the strands (25) into individual partial lengths is. 909846/0207 BATH