DE15873C - Process for the production of metal foils - Google Patents

Description

CL.-

HES

PATENT OFFICE

GREAT

The method consists in placing the metal in a molten state on a pair of rollers is brought, which consists of two adjacent, mutually adjustable rollers made of iron or steel. You can adjust the rollers so close to each other, that the gap corresponds to the required film thickness. By now keeping the metal in a molten state either poured from above onto the rotating rollers or the same from an oven through heated pipes etc. leads to it, without application of significant force the first time the rollers are passed, a film of the required thickness immediately appears. At a Roller diameter of 30 cm, the number of revolutions for tin and zinc can be 20 to 25, for lead are approx. 30 per minute.

With the help of this method, according to the inventor, the work takes much less time to be completed than with the previous process, and in this respect it is an even better product achieved when the film produced afterwards is softer and more elastic than the one previously fabricated Foil. Using this method, a film of unlimited length can also be produced become what was previously not possible.

The setup of the apparatus used in the procedure is as follows:

The two cast iron rollers AA ^! are connected by toothed gears BB, which are in mesh with one another, in such a way that both rolls are rotated in opposite directions, but evenly, from a back gear, which is set in operation by a powerful motor. The roller A ¹ is fixedly mounted in the machine frame, while the bearings of the roller A can be adjusted against the roller A ^{1 in} order to be able to change the space between the rollers.

CC are two wooden blocks that rest on the pair of rollers or are carried by the frame and serve to limit the width of the film to be produced; For this purpose, the same are attached to the machine frame so that they can be adjusted in relation to one another. Between these wooden blocks the metal is now brought in a molten state onto the pair of rollers, which can be done by hand with a trowel JD or through a channel from the melting furnace, or in some other controllable way. A worker must see to it that there is always a small amount of metal on the rollers.

As a result of the rotation of the rollers, a film strip R is now formed from the liquid metal below the feed point, which is solidified immediately upon leaving the rollers and can be wound onto a wooden roller H by a second worker.

Before the start of the operation, the rollers are expediently warmed from the inside by supplying warm water through the pipes rr ^{1 in} order to prevent the first tin which is put on the rollers from solidifying. If you want to avoid warming up, you have to increase the distance between the rollers a little at the beginning of the operation and then reduce it again after the operation has started.

emplu ι

The degree of heat of the rollers must, depending on the melting point of the metal to be processed, can be varied and results immediately from practical observations during operation.

Claims (1)

Patent claim:
The process of producing metal foils by pouring the metal to be used, melted, into the space formed by the top of two horizontal rollers AA ¹ and by two insert pieces CC , and during the solidification, by rotating these rollers, is designed as an endless sheet that is carried away downwards. For this purpose ι sheet of drawings.