PROCEDURE AND DEVICE FOR COATING WITH A PQ VQ OF COLD MOLDS AND / OR NUCLEARS pg CO ADA DESCRIPTION OF THE INVENTION The present invention relates to a method for coating powder with a mold for realizing castings and / or cores made of a fire-resistant component especially sand and preferably a liquid binder component to form a barrier between the mold or the core and the casting material, against the penetrating gases in the casting body being solidified. The invention further relates to a device for carrying out the process with a container of to a for the mold or casting molds and / or casting cores and a mixture made of a granulated base substance and a powder. In the industry of the casting works with molds and nuclei that must fulfill a series of technological requirements to be able to resist the casting material consisting of iron or liquid metal. Casting molds or cores consisting of a fire resistant component with an adjustable core eg quartz, zireonium, chromite sand, etc., and at least one liquid bonding component that chemically causes the mechanical strength of the molded form or of the nucleus by hardening. Modern binders are manufactured based on synthetic resins. Its hardening is carried out with the help of a suitable hardener, usually organic, when the mold is filled with a metal melt. The hydrocarbons of the binding polymer fixed in the metal-mold limit, or metal-core, are partially decomposed, which is produced in gases, these gases they should not remain in the metal casting body, because in that way they would spoil. Other sources of gas exist in the mold or core as solvent and / or water condensed alcohols. It is therefore known to try to prevent the penetration of such gases into the casting body by the laying of layers or coatings on the contact surfaces of the casting mold or core with respect to the metal casting body. Furthermore, it is known from the German patent specification 27 24 705 shapes and cores that are covered by applying a powder that forms a protective layer. Here all the problem is to get a good grip, so that simultaneously a sub-pressure must be achieved in the mold or core so that the dust is sucked into the mold or core, this represents an important effort that is also difficult and hardly It is possible to establish a sub-pressure of this type in the mold or in the core, so that a rubbed powder is sucked uniformly towards the inside. European patent document 00 24 067 is known for coating substrates which come into contact during use with a liquid melt metal, charging the particles triboelectrically, placing the substrate on the ground and then the charged particles bringing them into contact with the the substrate grounded. For such a coating, charged particles are required and therefore a corresponding electrotechnical expenditure must be used. Therefore, the object of creating a method and also a previously mentioned device is presented, whereby a powder can be fixedly and permanently applied on the mold or the core to form a barrier between the mold or the core and the material. of laundry. Without the parts to be coated with dust, it must be subjected to a sub-pressure or the particles to be coated must be charged triboelectrically. To achieve this objective, the method according to the invention is characterized in that the powder is mixed with a granulated mineral material or sand and because the mold and / or the core for the casting is sprayed for coating with the powder of this mixture made of the substance. dry granulated mineral and powder. This does not simply powder or rub a powder on the parts to be coated, but a surprising mixture of that powder is applied with a preferably sand-like substance., and with this the parts to be coated are sprayed, this leads to the powder adhering to the grains or cores of the basic mixture of grains being intensively transmitted to the casting mold or the core and penetrating its surface, so that the pores of the surface are closed and also greatly diminishes the roughness of those parts. By closing the surface pores, the penetration of the gas from the mold or core is prevented in the casting process in the first stage of sodification or hardening. The cores of sand or base material belonging to the mixture do not remain stuck in the mold or in the core because they are dry, so that they serve in a certain way as carriers for the powder on the one hand and also as auxiliaries for the application. It is especially suitable for the purpose pursued in the process of spraying the mold or the core that the mixture of basic material and powder in the zone of the mold and / or the core or cores of casting is disintegrated in the form of a mass capable of flow. It is known that masses of dust and / or grain or materials of this type can disintegrate since they have a similar behavior in their flow to a liquid. It is especially favorable if a mixture of basic material-powder or a sand-powder mixture is disintegrated by means of vibration or sound or of a carrier medium, especially pressurized air or a combination of the above. Within the field of the mixture of the basic substance-powder where the cores or the molds are found, it will be sprinkled by means of that breaking up of the mixture, so that the dust is at least partly added to the surface of the form or The core and this can be floated and supported by the grain constituent parts of the basic substance, in this way the desired durable coating with the powder is produced, without the molds or the cores having to undergo a sub-pressure, which must act in its surface inwards to stop the dust on the surface. It is particularly suitable to transmit the powder covering the grains of the sand basic material in the mixture by friction or rubbing to the surface of the casting mold or the casting core and especially to penetrate the pores of the surface. This leads simultaneously to an aiizamiento of the surface. so that even the structure of the mold or core can be improved and the accuracy of the casting increased. By this elaboration with penetration of the constituent parts of the powder into the pores of the cores or casting molds, the barrier sought for the detached gases is produced. First of all, by a step of the described procedure or by the combination of several steps, a production process with good use of the working space, energy saving and technologically favorable for the surface treatment of casting molds and cores is thus produced. which has the capacity to replace the usual treatment of layers or powder application without any loss of quality. In fact, the powder can penetrate into the pores of the surface so that they are sufficiently closed, thus forming a good barrier against the gases that are released at least during the first phase of casting and solidification, where the surface roughness decreases simultaneously. of the mold or core and with this the quality of the casting part can also be improved. The spraying of the mold or the core with the mixture made of synthetic material or of the powder and sand can take place without any problem, for example in the form of a flowing bed. It is especially economically favorable that the mixture consisting of basic material or sand-powder is used multiple times and this mixture will be mixed again from time to time. The procedure described above gradually the basic substance or sand is giving the powder adhered to the mold or the core so Slowly decrease. The basic substance or the sand remains unchanged and with this it is necessary to mix new powder into the mixture from time to time in order to cover other cores and molds. The device already mentioned at the beginning to perform this procedure is mainly characterized in that vibrators and / or sound sources and / or a pressurized air system are connected to the container belonging to it to disintegrate the basic material mixture powder found in the container. jointly rum one or more molds and / or cores and in this way make the mixture flow, so just put in a container corresponding molds <; _ > The cores are mixed together in the basic substance mixture, and then disintegrated with the vibrating sound sources and / or pressure air that are located next to the container, so that this mixture almost flows around the parts to be coated, so that the constituent parts of powder belonging to that mixture so that they penetrate in the manner described on the surface of the molds or cores. The take-out container may have a floor on which the mixture is directly supported and on which the casting mold has been placed, and the casting mold produces an especially simple container, where spray can take place. molds or cores with the mixture basic substance-powder. An alternative embodiment may be to dispose in the intake vessel a gas permeable plate, a net or something similar * above the floor to stop the mold or the core or to arrange a support device for the molds or cores on the floor of intake container. In this way the molds and / or cores can be mounted inside the container but somewhat above the floor, so that a better spray with the powder is possible and with this a more perfect coating is achieved. In the application of pressurized air to the intake vessel, a pressurized air dryer and, optionally, a pressure reducer may be provided. With this it is achieved that the pressurized air which serves to fluidize or to create a bed of fluidity inside the container maintains the necessary dryness so that the basic substance-powder mixture does not have difficulties to swirl or disintegrate due to humidity. In the following, embodiments of a device for carrying out the method according to the invention and also the workable procedure will be described in more detail with reference to the drawings. It shows in a schematic representation: Figure i: a longitudinal section of a device for coating molds or cores with a powder, with a receptacle for this purpose and for a mixture made of granulated basic substance or powder next to the container are vibrator connectors, sonic sources and a high pressure system to disintegrate the mixture containing the powder, with the previous one in the starting position. Figure 2: the longitudinal section according to Figure 1 during the treatment of the molds or cores with the mixture basic substance-powder. Figure 3: an alternative embodiment, in which a gas-permeable plate is placed inside the container to place the molds and / or the cores of a first receiving container plate in the starting position again. Figure 4: the container according to figure 3 during the treatment of casting molds or cores with the powder basic substance mixture. Figure 5: in a schematic representation and enlarged the surface of a mold or casting core made of the basic components of the sand. of the core or the mold with the linking components which are intermediate before the treatment with the basic substance-powder mixture. Figure 6: a representation corresponding to figure 5 after coating with the powder. In the following description, the matching parts of the different devices have received equal reference figures even when they vary in their function or in their conformation. The device shown in FIGS. 1 to 4 first of all has a receptacle container 1 in which the molds or pouring cores 2 can be placed together with a mixture 3 consisting of basic substance or powder. The basic substance can basically be sand. The receiving container 1 has vibrators 4 and / or sound sources 5 and / or a pressurized air system 6 beside them, with which the mixture 3 basic substance-powder is set in motion and it can be dislocated so that it can spray the shapes and cores 2 which are firstly in accordance with FIG. 1 and according to FIG. 3. In the exemplary embodiment according to FIG. 1 and 2, it is fixed on the floor of the container. 1 takes a gas-permeable plate 7 which allows simultaneous penetration and distribution to pressurized air applied by the pressurized air system 6 over the entire horizontal cross-section of the intake vessel i. This plate 7 is mounted therebetween between fixing elements 8. Its meshes or openings are small in the average grain size of the basic mineral substance contained in the mixture 3 basic substance-powder. so that the intermediate space between the floor and this plate 7 is free of this mixture. Here we can see in figure 1 the starting layer where the forms or molds and the nuclei 2 rest on the mixture 3 basic substance-powder, which in turn is covered on the plate 7. Figure 2 shows how the molds or cores 2 are covered by powder, by connecting vibrators 4 or from the work sources 5 the mixture 3 is added. connect the pressurized air system 6. ' With this the mixture 3 is fluidized and practically disintegrates as a fluid, so that the molds and cores 2 are wrapped therein and the powder which is in the mixture passes to the parts 2. The air system pressure 6, consists, as schematically indicated, of a pressurized air source 9, a dryer 10, a pressure reducer 11. as well as ducts, valves and connections. The individual parts and the constituent parts of the basic mixture-powder 3 is put through the disintegration and thus surrounds the contact surfaces of the molds or cores 2 used for the casting. The energy of movement of the mixture 3 serves to float and introduce the powder into the pores of the casting molds or cores 2. As a result of this treatment, the expectation of the molds or casting cores 2 is considerably reduced if the figure 5 is compared. and 6 the surface of a casting mold or of a core 2 is recognized in a strongly enlarged and schematic representation according to Figure 5. previously and according to Figure 6 after the treatment. Thus, the base components 30 are recognized, which may, for example, be grains of sand and the connecting components 31 arranged intermediate. In Figure 6 are now the surfaces covered with dust particles 32 and closed, where the dust particles 32 form an outward barrier so that the gas existing in the mold or in the core 2 during the casting process can not exit and thus I will not be able to damage the piece that is being cast. The embodiment according to FIGS. 3 and 4 corresponds to FIGS. 1 and 2. It is only recognized as additional that another plate 13 can be placed above the plate 7 that this holes on the molds or casting cores 2. With this it has this plate in the starting position and also during the treatment a certain distance to the gas permeable plate 7. That other plate 3 is mounted on damping elements, so that in the case of oscillations of the vibration coil those can be compensated by the damping elements 12, so that the casting molds or cores 2 on the plate 13 can not be damaged by such vibrations. In this case, too, after the corresponding actuation of the vibrators and / or the sound sources and / or the pressure system, a disintegration of the mixture 2 takes place, so that it surrounds or rinses the molds and cores 2 and their surfaces with powder so that it covers them as already mentioned in the first embodiment, so that a corresponding result can be achieved as shown in figure 6. The pressure air can be dried efficiently so that the powder in the mixture 3 does not make it unusable by the action of air humidity. The intensity of the pressure air bath can be controlled by means of the pressure reducer 11. The duration of the bathing depends on the measurements of the intake vessel 1 of the geometry of the mold or of the grain of the granulation grade of the base material as well as degranulation of the dust and can vary between wide limits. With both devices one according to FIGS. 1 and 2 and another according to FIGS. 3 and 4 can thus one or several molds and casting cores 2 be coated with a powder where the powder is first mixed with a mineral base substance or granulated sand. , so that the finished mixture 3 which is shown in the figures is produced and then the mold and / or the casting core 2 can be bathed or sprayed with granulated basic substance and powder which is dry to be coated with the powder of that mixture. 3, so that large grains of basic substance that stop or have dust adhered to the surface of the molds and cores 2 and also float the surface, with which the surfaces simultaneously align. The existing pores are closed, so that the desired barrier will be produced which prevents at least during the first phase of the casting process the gas outlet from the moide or core 2 and in this way a damage to the workpiece that is being straining