DE2231662C3 - Feeding device for a liquid metal jet - Google Patents

Description

in which an opening is provided for the metal jet outlet.

30 Such a constructive implementation of the device enables the required pressure gradient to be maintained in the liquid metal and

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like g

The invention relates to the supply device, if it is that a ^ «" "gj! ^^^ ,?

settings for a liquid metal crew is to Auftra- required at L ^e 'stungsfah gke.t ^ Gejel

gene of metal coatings or for metered metal 35 Below is an exemplary embodiment of the Er

Supply line. The devices can be found in Hüttenwe- ning with reference to the drawings be.cnr.e-

jen, verbs in foundries and mechanical engineering; it shows “rfinHuno ^ p

be turned. Fig. ^{1 e} j ^nen longitudinal section through the inventive

It is a feed device for a liquid device, according to the invention

gen metal beam known, which has a cylindrical cam- 40 F i g. 2 the electrical circuit de: erfiη ungsge-

mer contains, which via an axial opening with MAESSEN device with power supply in the form

a container filled with liquid metal in a con of non-fusible electrodes _Sf . _hqlt " _{n (} ,

binding is and which in the cylindrical wall F i g. 3 the electrical circuit according to the invention

has an exit opening for the metal. In order to do this with continuous metal feed into the fore-aft

forcing molten metal around the axis of 45 tung, _Q , "

circulating around the cylindrical chamber is illustrated by FIG. 4 the electrical circuit according to the invention

Metal from the center in the direction of the peri with power supply lines in the form of piasmatrons

pherie conducts an electric current. To this with opposite polarity,

For the purpose of this, one electrode in the container with FIG. 5 in a schematic representation is invented Metal and the other in the chamber to 50 dunking devices with three cylindrical ones

arranged on the cylindrical wall, while the zy- chambers, _m "" ii "i, p

Lindrische chamber is located in a magnetic field Fig. 6, 7, 8 a longitudinal section through possible

det. When the device is in operation, the flow of the working chamber of the invention

Sige metals under the influence of the pressure gradient, the moderate device. . is generated by the circulation of the metal, in the form 55. The device consists of a ceramic

a beam through the outlet opening from the cylindrical body 1 (Fig. 1), in which there are two cylindrical

throat chamber. Chambers 2 are located, the height of which is 5 to 6 times smaller

This device, however, has the following characteristics: as its diameter is, it extends over each de

_Partly ⁶ ° chambers a container a for molten metal

The electrode must be located on the ceramic · 60.

»Sealed before the wall of the cylindrical chamber. Each container 3 stands with the corresponding zy _{wef (} j _en ; cylindrical chamber 2 via an axial opening 4 in

When spraying aluminum, no connection can be made. The two chambers 2 are used with one another, since they are connected by a channel S via openings which all metals without exception 6 _{S of} the periphery of each cylindrical chamber 2 are pre-melted on molten aluminum. Channel S has an open

It is the aim of the present invention to provide the opening 6 through which the metal from the device to eliminate the disadvantages listed above. flows out.

Each container 3 for liquid metal is provided with a Provide power supply.

The power supply lines can be in the form of graphite or tungsten electrodes 7 (FIG. 2), in the form of remelting electrodes 8 (FIG. 3) or in the form of Piasmatronen 9 (FIG. 4) with opposite polarity.

Such a power supply system ensures simultaneous melting and continuous heating of the molten metal.

The device can be several, e.g. three (Fig. 5) cylindrical chambers 2 included.

The chambers can not only be cylindrical, but also be designed differently, as shown in FIGS. 6,7,8 can be seen.

The device works as follows.

In the starting position, both chambers 2 are filled with molten metal.

It is used to keep the molten metal in the Kamrnera2 Forcing to circulate, the metal in ile containers 3 from the unlike poles Direct current (or alternating current) is supplied to a power source while the chambers are moving 2 in a longitudinal constant magnetic field (or if alternating current is used) in a magnetic one Longitudinal alternating field.

The metal begins after the power is turned on and the field is created in the two To circulate chambers 2, whereby a pressure gradient is generated in each of the chambers 2, under which Influence the metal from the central areas of the chambers 2 via the channel 5 into the outlet opening 6 flows.

The outflow quantity and the pressure of the metal jet which flows out of the opening 6 is regulated by changing the current strength, the magnetic field strength and the geometric shape of the channel.

The pressure gradient in the chambers 2 with the circulating Liquid metal does not depend on the direction of rotation, and all the more not on the direction of the current away. Therefore, when using direct current, it is sufficient to connect the "+" pole of the power source with the to connect one container and the "-" pole to the other container. An analog picture is produced by the Using AC power received.

The current can be supplied to the container 3 with the help of graphite electrodes, which directly are immersed in the molten metal that is continuously poured into both chambers 2. If the metal needs to be heated or if the metal is in solid form (powder, wire) in the two Chambers, the electrodes are not immersed in the metal (Fig. 4), but between the graphite electrodes 7 and the molten one Metal arcs are good.

In Fig. 2 is the magnitude of the direction indicated by arrows marked.

In some cases, when the metal is supplied in wire form, graphite electrodes are not required and the arc burns between the molten metal and the wires (Fig. 3).

It is most expedient to use a Piasmatrone 9 with opposite polarity as the power supply system to be used (Fig. 4).

The device can be used for the application of coatings, for metered metal feed in foundries and can also be used to convey molten metals.

The device described enables the molten metal with a given efficiency to promote.

1 sheet of drawings

Claims (1)

rw invention is based on the object of a ZohJtoÄrSiwg for a liquid metal Sponsorship claims: State »ungsvornww« JB _{ejn Dnjck} - _{m umlau} . f * ^ rSiI 5urt becomes without an electrode J, supply arrangement for a liquid fenden ^ f "St is present, and which a con- Metal beam, which forms a cylindrical chamber 5 in the W ^^^ ahi-shaped supply of the liquid holds, which via an axial opening with a twu'erhcjes JffiriE efficiency securely- containers filled with liquid metal in metal »at erforterucnw * bond, which is powered by a power source ™ ·. _{d by} creating a supply electric current is supplied, and what ^dies ° _n > ht _U nE for a liquid metal jet , i located in a magnetic field which contains for em xo fjy ^ gMSSdii chamber which continuous; Surrounding the metal wm the tost, de a ^ " _f ^ _{with emem with} nutty Chamber axis ensures and grows in the cylinder via f ^ gfSte ^ in connection with the see wall an outlet opening for the Metfai ^ geMttenBeWUt _{her StRjm} possesses tall beam, characterized thereby- vraeiner Stromque'ie magnetic field net that mc device has at least two zyhn- i _S ^uh 2 ^W ± m _r ^ i _n continuous revolving of the drical chambers (2) which close the fineta, d ^ for «nJ ^ J ™ ^ _{t and which in} electrical circuit across the metal by MetaUs 7 ^ _A ^ SSEg for the metal beam Openings in their cylindrical walls ver der WandI a ^ «jn ^^ JS Vorrichturs min- are bound, with the metal in the containers being, wöbet ^e ™ "™?" (3) Stream of ^ unlike poles of the, o least two;, zyh ^ s ^ Ees over the Me- ^ rSfgt ^ Ataghl, thereby fÄ openings in their indicates that the openings in the cylindrically connected smd see walls of the chambers (2) with each other stream from the unlike connected by a channel (5) in which _aS source zugrfuhrtwiid. ^ ^. ^^ _Kammerwän . 5) for the