DE1083023B - Protective device against the effects of stopper runners or ladle breakouts during the continuous casting of iron and steel and of non-ferrous metals - Google Patents

Description

The use of stopper ladles as a means of transport for liquid non-ferrous metals and ferrous materials in the operation of centrifugal casting and especially in continuous casting systems for vertical and Oblique casting requires an arrangement at a relatively great height above the hut floor. With these Experience has shown that the occasional occurrence of stopper runners must be expected in pans, i. H., the stopper located in the bottom of the pan only closes insufficiently or not at all more. In many cases, the systems mentioned are not able to absorb the unregulated outflowing metal, and the risk to the operating team from overflowing and / or splashing Metal is particularly given that on the mostly small working platforms of such systems over There are only a small number of alternative options in the hut corridor. Also the possibility of damage the system itself requires the arrangement of special protective measures against such occurrences, which of course not only appear as plug runner in stopper pouring ladles, but can also occur as breakthroughs in tilting pans or the like. They are below at Hand described by stopper pouring pans, because the stopper runner is probably the most common type of this type Incidents. They consist in the arrangement of one with a simple crane or cat travel the ladle reachable and lined with refractory material in a known manner, one end of which is as close as possible to the casting machine, with the emergency casting channel has a length such that the discharge of the metal flowing out of the area of the actual casting machine and its discharge in remote and / or lower arranged emergency casting containers and / or molds is guaranteed. All the more so as the working platform's load-bearing capacity is usually not sufficient, to accommodate emergency casting containers and / or molds of the appropriate size.

It has already been proposed to arrange collecting containers within a casting machine, but that only for taking up relatively small amounts of liquid material after the casting or partial casting has been completed should serve. Under certain circumstances, these containers should also be capable of the ones used in continuous casting of iron and steel in a large number of molds in the event of malfunctions for a mold or a pair of dies to take up a certain amount of material. For absorbing large amounts of liquid Material, such as the occurrence of stopper runners or pan breakthroughs, however, they are pure not suitable in terms of size and also in terms of their arrangement within the area of the casting machine.

Protection device against the effects of plug runners

or pan breakthroughs

in the continuous casting of iron and steel

and of non-ferrous metals

Applicant:

Mannesmann Aktiengesellschaft, Düsseldorf, Mannesmannufer 1 b

Dr.-Ing. Karl Georg Speith

and Dr.-Ing. Adolf Bungeroth, Duisburg-Huckingen, have been named as the inventor

According to the invention, the Notgußrinne itself should already be equipped so that it can be used as a collecting device can serve. You should have a lateral protection against splashing metal, according to the invention consists in relatively high side walls with an overhang on the upper side edges, which themselves should run horizontally so as not to be an obstacle when moving the pan, while the with refractory material lined sole has the necessary slope. The invention also proposes before, the emergency casting channel or the emergency casting units as high as possible above the work floor or work platform, but at least at the same height as the pouring device to provide a low drop height which reduces the splashing of the metal. In such a case, the bottom of the pan acts as a splash guard additionally effective, and metal splashes are caught or ricochet off it.

The Notgußrinne can also divert the material into standing sack molds, which are individually or closed several are placed close together and provided with short overflow channels and the metal flow after filling the first mold, transfer to the next mold, which is advantageously located on a lower level. Such an arrangement initially offers the advantage of only placing the pan on the highest one To move the mold, as the liquid metal then successively cascades the individual block forms will fill while the multitude of ingot molds the

009 529/116

Offers the possibility to also accommodate large melts in an emergency. Instead of the cascading Sack molds can of course also be provided, but they themselves are below Circumstances expire and therefore require additional protection when placed on a work platform, which consists in placing them again in a pan lined with refractory material will. While with the use of sack molds in the manner described probably always Wreck castings are incurred in the arrangement of emergency casting molds, experience has shown in many Cases still receive a usable material.

Since, as I said, the working platform and possibly the auxiliary platforms are usually not able to to include the emergency units described, to which, if necessary, the weight of a complete When the melt comes, one gets the according to the invention with the help of the emergency casting channel from the area of the casting machine Collect the derived material on the hallway below the stage or elsewhere must ensure that splashing is avoided with certainty.

In this case, the invention proposes the arrangement of a collecting pit with a sole on the Hütten-Hur as close as possible to the respective system. The collecting pit is walled with a protective wall Surrounded by refractory material. In the case of the arrangement of the pit below the hut hallway, the Pit advantageously lined with refractory material, but in this case the protective wall ring come to an end. In both cases, however, the path of the possibly freely falling beam should be be surrounded by splash guards (shaft), while the emergency pouring channel described above is on the stage is arranged to enable the material to be diverted over the edge of the stage. Instead of of the shaft can also be provided with a correspondingly lined downpipe that is enlarged in the shape of a funnel at the top be, which is optionally also arranged at an angle.

It is of course possible to combine the individual proposals of the invention accordingly, if the circumstances in the respective company so require.

In the drawings, exemplary embodiments are shown on the basis of a continuous casting plant.

Fig. 1 shows the arrangement of the emergency casting channel in connection with an emergency casting container on the casting platform in view and a section through the emergency pouring channel;

FIG. 2 shows the emergency casting channel and the step-like arrangement of the sack molds with short overflow channels;

Fig. 3 shows the arrangement of an emergency casting mold combination with a protective trough and an emergency casting channel. It is but more advantageous - if there is the possibility - to pour directly into the funnel, as indicated;

Fig. 4 shows the arrangement of the Notgußrinne with emergency casting container on the hut floor and with the partial Splash guard lined with refractory material;

Fig. 5 shows the emergency casting channel and the arrangement of the emergency casting container below the hallway with a funnel shape trained splash guard (downpipe), which optionally - as indicated - also as a whole can be conical;

Fig. 6 shows the arrangement of the collecting container below the hallway with an inclined emergency pouring channel or steel drain channel.

Claims (9)

Patent claims: 1. Protection device against the effects of plug runners or pan breakthroughs in Continuous casting of iron and steel and of non-ferrous metals using stopper ladles for continuous casting plants of a relatively great height above the smelter floor, characterized by the Arrangement of one which can be achieved with a simple crane travel of the pan and is known per se Way with fire-resistant material lined emergency pouring channel, one end of which is in the largest possible Located near the casting machine, the Notgußrinne having a length such that the derivation of the flowing metal from the area of the actual casting machine and its Discharge in remote and / or lower arranged emergency casting containers and / or molds is guaranteed. 2. Protection device according to claim 1, characterized in that the side wall upper edges the emergency pouring channel run horizontally and equipped with an inwardly directed overhang are, with the side walls being relatively high. 3. Device according to claims 1 and 2, characterized in that the casting channel in horizontal position is arranged and its base or the refractory lining the required Has inclination. 4. Device according to claims 1 to 3, characterized by the arrangement of Notgußkokillengespannen, in which is poured from the ladle with the help of the pouring channel, while the skins themselves again in a refractory Material lined tub are placed. 5. Device according to claims 1 to 4, characterized by emergency casting containers in the form of sack molds, which are arranged like steps and with relatively short overflow channels are connected to each other. 6. Device according to claims 1 to 3, characterized in that for receiving the The pan contents flowing out of the emergency casting channel are on or below the emergency casting container Hut hallways are arranged, with the freely falling pouring stream from a shaft-like splash guard is surrounded, which is optionally completely or partially lined with refractory material. 7. Apparatus according to claim 6, characterized in that that the shaft-like splash guard expanded at the top in a funnel shape or a total of one Has a conical shape and is optionally arranged obliquely as a steel drain channel. 8. Device according to claims 1 to 7, characterized in that its pouring height largely coincides with the height of the pouring device of the continuous caster. 9. Device according to claims 1 to 8, characterized by their arrangement in parallel or at right angles to the crane or trolley travel of the respective casting crane. Considered publications:
German Patent No. 909 142. 1 sheet of drawings ©. 009 529 / fl? 5.60