DE1558260A1 - Process for the continuous casting of metal - Google Patents

Description

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A 1O 4-54- TELEPHONE 242761/2

March 31, 1967
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INSTITUT DB RECHERGHBS BE IA SIDERURGIE PHANQAISE

185, rue Preeident Roosevelt SAINT GERMAIN-en-MYE (Yvelines), France

Process for the continuous casting of metal

The invention concerns © in Yerf & hren for the continuous casting of liquid metal ia © in © Siaesform with foeweg-

eiai aeltoa ¥ © rri © iitisiig © a äi © s © r species known - ₁ "with which ia Hi®ss £ © si! © 3 sit b @ ii®glieli © a Biaiere or KetasiiaggfllgaQsa © lmg © l © it © t tfircL S @ i this Torl © ti © r Jltetssicl sifi © eli @ a sw @ i © iaander opposite- VMMäm & f © §tg @ l © gt ₀ © o iaas look! at eiaer on the ümm% έ &% β,% τ % ®®. Mdtallss giirüskimfilteeiiden Yolumen-

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reduction of the wall of the Gieeefora and the metal surface forms a gap. Decreased the double room Due to its low thermal conductivity, the Netallee cools down considerably. Sometimes it was even a reawakening dee (kieebloolcea featgeetellt, deeeen Qussrinde is eo thin that Durohbrüohe this Einde un- ■ eldlioh and

Tuck parts should be used in a (^ reading device of the aforementioned Art «in which the metal ages into a glass mold rectangular cross-section «svei endless through over Bollen Binder formed walls (A) and vertically arranged walls (B) flows, according to the invention are avoided in that the two winches B of the Qiessform one the distance between the two circumferential bands exceeding width) and one of the width of these bands substantially from each other have entepreohenden distance »that the circumferential belts perpendicular to and swisohen the walls B and are in contact with them along a line, such that they slide along these sideways and the two endless

^ Bands on the solidifying metal under Brück issue

2J The device can also be used in conjunction with the ° mentioned features or the following features individually or in combination with each other!

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a) The two walls B of the casting mold are arranged feet?

b) The two walls B are made by thin endless ones, at the same speed as that of the walls A forming bands are formed circumferential bands;

o) The means for pressing the tapes are formed by movable frames that the tapes as Have system serving pulleys and the belts in contact with the metal holding organs exhibit;

d) The means for pressing the tapes are formed by independent rollers, of which each having organs each holding a band in contact with the metal;

e) The organs maintaining contact with the metal according to c and d are formed by springs;

f "QiP organs maintaining contact according to c and d are formed by hydraul :, ε before or pneumatic K ^ jLinder?

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g) The surface of the pulleys over which the belts in contact with the metal are guided has a multitude of wedge-shaped elevations

"Endless belt" is to be understood as meaning a belt whose ends are connected to one another or fused together, for example in the manner of a transmission drive belt.

Because the bands A can slide on the walls B, the bands can move under the action of the pressure medium continuously and with its entire surface to the Mein 11-ocer surface put on and stay in contact. When the metal solidifies and consequently contracts, eo the pressure means cause the ligaments to solidify Metal profile, despite its shrinkage, follow exactly, which is one of the aims and advantageous features of the invention O

° The inventive design of Oiessvorrichtung j £ with the result that the metal is cooling rapidly stares ER ^ and therefore a much larger Gieesgesohwindlgkeit it allows ice it in the known devices the case - 1st *. This results in a significant increase in the output in the case of using a device according to the invention. Another advantage is that the cooling is equal to

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progresses moderately, reducing the risk of blea formation in the out · is avoided.

The device according to the invention can be in a form Bit longitudinal, vertical, horizontal or vertical Symmetry axis exist "

Next · Torteile laaaen eich the description in the Drawing in an example of execution rather represented remove. Show it

JIg. 1 is a side view of a first exemplary embodiment }

FIG. 2 shows a section along the line a-b of FIG. 1;

Fig. 3 is a side view of a second embodiment of the invention;

4 shows a horizontal section along the cutting line G-ä of Fig. 3? and

5 shows a vertical section along the section line e-f the FIg-. 3.

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They oieesfor * extending in the rertical direction according to the TIg. 1 and 2, there are two strips 1 and 1 opposite each other, forming the wind · A, "made of flexible sheet metal, as well as two firmly arranged copper blocks 2 and 2a, which are cooled in them by channels 3 and 3a circularly shaped waeeers." Blocks 2 and 2a form the walls B of the casting mold. The liquid metal 4 flows out of a container 5 and its flow rate is regulated in a known manner, for example by keeping the metal level constant in the container 5.

The endless ribbons rereohewn at their ends 1 and 1a are about the guide roles 7 and 8, bsw. 7a and 6a guided.

) The circulation of the two belts is perfectly symmetrical, as are the organs that cause this circulation, symmetrical or symmetrical. The guide rollers 7 and 8, bsw. 7a and 8a are each mounted in a rigid frame 9 and 9a. The frames 9 and 9a each carry a swivel-mounted tracks 1o and 1oa ujb the Aohsen 11 and 11a, each of which with small pressure rollers 12, 13, 14 bsw. 12a, 13a, 14a and a deflection and pressure roller 15 BSW. 15a is provided. Pneumatic pressure cylinders 16 and 16a press the balls 12, 13, U or 12a, 13a, 14a and the roller 15 via the frame parts 1o and 1oa

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or 15a against the bands 1 bsw. 1a _v which are pressed in this way against the solidified metal 17, which enables the strips 1 and 1a to follow the metal while it is being reduced in volume, resting against the broad sides of the shaped block. The small rollers of the device, which are in contact with the cooling metal via the belts 1 and 1a, have rigid, conical or wedge-shaped elevations 16 offset against each other, the outer ends of which form a type of cylindrical brush on which the belts revolve « Nozzles 19 cool the belts 1 and la by means of water jets sprayed out by them. “As a result of the conical elevations of the pressure rollers, which cover only a very small part of the surface of the belts, the belts are also located on the surfaces between the belts and the rollers hit by the cold jet of water *

Take-off rollers 21, which are driven by motors not shown in the drawing, pull out the solidified block the Giessfornu

They Figo 3, 4 and 5 are illustrations of an apparatus in which the mold is formed by four endless belts or _c at which the strips forming walls A

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be pressed against the solidified metal by means of independent, spring-loaded rollers.

Piping figures have in other elements of the bit in the Figs. 1 and 2 elements shown übereinetinmen {f they are also denoted by the same reference numerals.

In the embodiment shown in FIGS. 3, 4 and 5 belts 1 and 1a run over rollers 7 * 6 and 7a, 8a, which are stored in parts 22 and 22a. Arms 23t 24 »25 or · 23a, 24a and 25a, which are anchored in the frames 22 and 22a, carry the outer ends of the axles of small pressure rollers 26, 27, 28 and 26a, 27a and 28aj are these roles against the bands 1 and 1a by means of individual springs 29, 3o, 31 or 29a, 3oa and 31a pressed on. In the same way, the axes of the guide or deflection rollers 32 and 32a of arms and 33a, which are anchored in racks 22 and 22a. They rollers 32 and 32a are under the action of springs 34 and 34a against the bands 1 and 1a and thus have at the same time the effect of pressure rollers. The individual contact pressure of this Rolling on the strips 1 and 1a has the particular advantage that the strips also have non-uniform shrinkage of the metal can follow, with uniform shrinkage is here the transition of the river blockee into a pyramid-like shape Understood.

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You walls B are formed by endless belts 35 and 35a, which, as can be seen from Fig. 5, are guided over guide rollers 36, 37 * 36 and 36a, 37a and 36a. These rollers are mounted in frames 39 and 39a in which arms 4o, 41, 42 and 4oa _t 41a, 42a are anchored, the bearings for the ends of the axles of the small lumps 43, 44, 45 and 43a, 44a and 45, respectively "Wear" the continuous contact of the straps 35 and 35 "ensure with the straps 1 and la". For this purpose, the width of the straps 35 and 35a is greater than the distance between the straps 1 and 1a.

The belts 35 and 35a are also cooled by water jets 46, which are sprayed by nozzles 47 «

The initiation of the procedure takes place with the two in the above Embodiments described in the following way

One leads into the Siessform after the side walls and pressing devices “A test specimen made of steel was specified, the external dimensions of which were a little smaller than the Bwi8ch.es the existing distances between walls A and B are »Man then unblocks the pressing devices, whereupon irobeder Eat the rest of the way from the trigger rolls

Device is detected, held by the (measuring device

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will. Han then covered the test specimen with a bit of a layer made of asbestos and steel grit, and lets the metal flow into the upper part of the mold, where it gradually makes contact ■ it the wall surfaces and the poured onto the test specimen cold parts solidified. The drive motor for the take-off rollers is then set in motion. Bas metal gradually fills up the mold from which the test specimen is centered on the take-off rollers is pulled out. At the same time, the downward movement of the Test specimen and then the solidified metal set in motion, which in turn τοη recorded the take-off rollers and after is promoted below.

In the two exemplary embodiments described above, the circumferential, endless strips resting on the solidified metal lie against the broad surfaces of the solidified body, because such an arrangement is the most favorable from a thermal point of view against the solidified cast body resting strips against its narrow sides. Of course, the invention is in no way limited to the casting of steel, but rather extends to the casting of all metals and alloys «

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BATH ORIGINAL

Claims (7)

A 1o 454 -M- March 31, 1967 - wa ti A V 8 P R U-G H S 1 «Device for continuous iron metal casting, in which the metal flows into a casting mold with a rectangular cross-section, which has two opposing walls A formed by endless circumferential belts and two walls B arranged perpendicular to them» characterized by g β ₉ . that the width of the two walls B of the Gleesform is greater than the distance between the two bands forming the walls A and a distance from one another which essentially corresponds to the width of these bands, these bands being perpendicular to the wall surfaces B and with them are in lateral sliding contact, the circumferential binders (1, 1a) being pressed against the solidifying metal by means of pressure devices which ensure permanent contact between the strips and the shrinking solidifying metal "" BADORlQiNAL 00981 2/0710 A 1o 454 March 31, 1967 - wa 2. Apparatus according to claim 1, characterized because the two walls B of the casting device are fixedly arranged. 3. Apparatus according to claim 1, characterized that the two walls B by thin, endless, old same speed how the bands (1, 1a) surrounding bands (35, 35a) forming the walls A are formed 4. Device according to claim 1, characterized that the belts (1, 1a) pressing device parts by movable frames (1o, 1oa, 22, 22a) are formed on which pressure rollers (12, 13, H, 12a, 13a, 14a, 26, 27, 28, 26a, 27a, 28a) are mounted, which under the action of resilience, the contact of the strips with the metal is maintained Organs (16, 16a) stand. 5 · Device according to claim 1, characterized in that the bands * against the metal pressing device parts by independently mounted pressure rollers (26, 27, 28, 2i> a, 27a, 28a) are formed individually under the Effect of resilient, the contact of the ligaments with the 009812/0710 A 1o 454 March 31, 1967 * \\ - va ⁿ tall sustaining elements {29 * 3o, 31, 29a, 3oa, 31a). 6, device according to one or more of claims 1 hie 5 »characterized by dasB the pressing members are formed by helical gears will. 7. Device according to claims 4 and 5, characterized in that the pressing members by hydraulically or pneumatically operated pressure pistons to be formed 8. Device according to claim 1, characterized in that the surface of the studs (12, 13, H _9, 26, 27, 28) pressing the strips against the metal are formed by a large number of bumps (18). QQ9812 / Ö710