DE113573C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The working of liquid metal has hitherto often taken place in such a way that the same is done Ingot was cast and then further completed by forging and rolling. To circumvent the casting of the metal ingots is the purpose of the present invention.

In this process, the liquid metal is removed from the furnace or crucible respectively pressed from a collecting vessel under strong pressure through a mouthpiece, which is already well warmed and in its actual outlet the metal has already cooled down enough to change its physical state.

Although the process of feeding the metal directly to the rollers has already been carried out the German patent 29548 is known, those described in the same were sufficient Institutions are not yet ready to achieve the desired goal, which is why this one Patent specification for pressing out the warm metal air or piston pressure applied while strongly heated air is also used to keep the outflow openings clean.

In Fig. Ι the drawing, such a metal container is shown in the position as he must stand while the metal is being drained and rolled. Fig. 2 shows the longitudinal section of the container.

Since the outflow of the liquid metal must take place in a vertical direction, the container is set up for tilting in a similar way to the well-known Bessemer pear. A dotted representation in Fig. 1 shows the Ausmün-. dung piece α in the position it must have in order to keep the same clean of liquid metal before the rolling process. If the container in the position just mentioned is filled to a sufficient height with liquid metal and well sealed, heated air is blown in through the tube c (FIG. 2), which is connected to the tube h (FIG. 1).

The blown air can escape through the tube i (Fig. 1); but after the mouth a has been tipped down, keeping the latter clean of the liquid mass, it passes through the metal and then passes through the tube i to any use or to the open air.

The mouth piece α is closed before the metal container is filled by a stopper d , which as a rule consists of the same metal that is to be produced from the liquid mass. The stopper is machined conically on the lathe so that it closes airtight by hammering it in firmly.

Since the liquid metal mass attacks the stopper, repeated closure is repeated Turning the same respectively. a new locking rod required.

It is advantageous to place the plug in such a position that it is during the outflow of the metal is horizontal, as this avoids solid casting of the same more easily can graze.

The piston u, which is used to squeeze out the metal, is made quite solid in metal and fits well in a metal ring m and further in the lining of the inner metal container, which is made of refractory material.

The whole process is now carried out in the following way: After the metal container has been filled to the appropriate height, heated air is blown in through the tube c in connection with tube h , now the opening piece α (through a gear transmission that engages in the gear η ) up to the Roller tensioner o tipped down and connected by a bolt that is not visible in the drawing. The rollers are then set in motion; Steam, air, or water is introduced through the tube s into the flask under high pressure, and as soon as the latter has advanced so far that the liquid metal closes the air vent tube i (the closure of larger masses of metal must be prevented by a clay plug) the outflow mouth opened by knocking out Hes plug d .

With the pushing back of the plug d , the heated air flow from tube c respectively is also at the same time. Tube h is turned off, and the metal is now flowing out until the piston u is quite
opening is advanced.

The stopper d is then tucked in again, but air that has been heated a little earlier is introduced, while at the same time the force used to advance the piston u has been switched off and the pre-air accumulating inside the metal container drives the piston u back. The mouth is now tipped up again and a new metal filling is added to the metal residue remaining in the container.

Before now the outlet to a new one

can be tipped down again close to the discharge work passages, the tube i must be freed from the clay plug closure.

The first rollers, which take up the solidifying metal, are used for circulating ones internal water cooling cast hollow and contain notches on the outside so that the same the mass can move better until sufficient solidification, while then the further Machining takes place in the same way as in normal roller lines.

The opening of the outflow mouth was made in a conical shape to thereby to promote the rise of the harmful gases contained in the metal.

Also the immediate transition of the still rather soft metal mass that takes place thereupon to the rolling work has a complete expulsion of all gas bubbles and welding result in the crowd.

Claims (1)

Patent claim: Metal working process in which the metal is removed from the vessel in which it is in is in the liquid state, fed directly to the rollers by air or piston pressure is characterized in that heated in the outflow nozzle inside the sealing plug Air is passed to the hand of the liquid metal before the outflow begins to keep away from the stopper, on the other hand to clean the channels of remaining metal, with the used air in through openings the vessel, e.g. B. in the manhole cover, can be discharged. For this purpose ι sheet of drawings.