DE662295C - Device for deoxidizing or deoxidizing and carburizing steel or cast iron by means of reducing gases - Google Patents

Description

Device for deoxidizing or deoxidizing and carburizing steel or cast iron by means of reducing gases is the subject of main patent 66o 094 a process for deoxidizing or for deoxidizing and carburizing steel or Cast iron by means of reducing gases, in which the entering the casting mold Casting material when flowing out of the pouring ladle from a gas feed opening at the spout sucks in the gas like an injector, whereby part of the gas penetrates into the pouring stream, while the other part surrounds it like a hose. The procedure according to the main patent aims, in contrast to already known processes, for deoxidation by means of reducing Gases to relocate the deoxidation to the last place, where the casting material comes into contact with air and could absorb oxygen as a result. To carry out this method according to the main patent is a special design of the ladle spout necessary. The present invention relates to a particularly advantageous one Embodiment of this device.

According to the invention is in a gas-tight gas supply box under The pouring stone in the bottom of the pan is another pouring stone, whose clear Width at the upper end is dimensioned so that between the upper and lower pouring stone an inlet opening remains for the gas to be sucked in by the pouring stream like an injector.

The device according to the invention can also be modified so that that the upper pouring stone into the lower one, which is enlarged in the shape of a funnel at the upper end The pouring stone protrudes and a pouring channel which opens out tangentially for the pouring stream owns. You can also screw the pouring channel in the upper pouring stone let run.

These devices can also be used to drill the stopper rod be waived.

In the drawing, three embodiments of the device according to the invention are shown as examples. Fig. I is a longitudinal section through a device in which a further pouring stone is arranged under the pouring stone I in the bottom of the pan, the clear width of which is dimensioned at the upper end so that an inlet opening between the upper and lower pouring stone - for the gas to be sucked in by the pouring stream remains.

Fig. 2 shows a similar device in which the upper pouring stone protrudes into the funnel-shaped widened lower pouring stone and tangentially has discharging pouring channel for the pouring stream.

Fig. 3 shows a device in which the pouring channel also runs helically in the upper pouring stone.

It is of course also possible, these three embodiments en features in other ways to form UNITING Z.

Claims (3)

PATENT CLAIMS: i. Device for deoxidizing or deoxidizing and carburizing of steel or cast iron by means of reducing gases during casting from a pouring ladle for the method according to patent 66o 094, characterized in that that in a gas-tight gas supply box under the pouring stone in the bottom of the pan another pouring stone is arranged, the clear width of which is dimensioned at the upper end is that between the upper and lower pouring stone an inlet opening for the from The pouring stream to be sucked in gas remains. 2. Device according to claim i, characterized in that that the upper pouring stone into the lower one, which is enlarged like a funnel at the upper end The pouring stone protrudes and a pouring channel which opens out tangentially for the pouring stream owns. . 3. Apparatus according to claim 2 ', characterized in that the pouring channel in the upper pouring stone also extends helically.