PL2094B1 - A method and device for cutting metals using liquid air or other liquefied gases. - Google Patents

Description

In cutting metals with the use of oxygen, the point is that the molten parts can be removed immediately in order to obtain a smooth cross-sectional surface and to accelerate the process. The aim is to increase the pressure of the oxygen current in contact with the cross-sectional surface as much as possible. The invention makes it possible to increase the pressure in the case of direct application of liquid air, converting it into a gas of considerable pressure without escaping into The drawing shows an example of the application of the guiding principle of the invention. A system of carburetors (vapors) f1 is attached to the Dewar tank containing the liquid air. The tube e carries liquid gas from the reservoir to the carburators which are connected in a spiral-like manner by twisted tubes (e) with respect to the heat from the outside air. If necessary, these tubes can be specially heated. In either case, a sufficiently rapid volatilization of the liquid oxygen is achieved, which creates a pressure high enough to cut through metals. It is recommended to provide the Dewar tanks with a long neck with the carburetors placed on the sides. A tube e and a bar c are inserted into the neck, which conducts heat in a known manner and is attached to the air-tight b. The purpose of this guide c is to accelerate the escape of the gas in the tank to such an extent that it is possible to inject the liquid gas through the pipes into the carburetor. The end of the hose / and the carburetor itself may be provided with adjustable safety valves n. They prevent the pressure from exceeding a certain limit. The end and the call are placed in the burner in the usual manner. PL

Claims (2)

Patent claims. 1. A method of cutting metals using liquid air or other liquefied gases, characterized by the fact that the tank containing the liquid gas is connected with carburators, which are influenced by external temperature, and the liquid is fed to pressure in the tank. 2. The device according to claim 1, the significant point that the tank containing the liquid gas has an elongated neck in the form of a pipe through which a heat conductor is inserted, in contact with the outside air, and a pipe, extending near the bottom of the tank, connecting the tank with a carburetor and for feeding the donut of liquid gas. Sprengluft-Gesellschaft m. B. H. Zastepca: I. Myszczynski, patent attorney. For patent description No. 2094. Print by L. Boguslawski, Warsaw. PL