SU372021A1 - THE DEVICE FOR THE OCOS OF GASES, INCREASING DURING CRYSTALLIZATION INGOT IN THE DEPOSIT - Google Patents

Description

one

The invention was carried out to a ferrous metal {3 Gia, in particular, to lead-alloyed steel casting.

A device is known for local suction of gases when a melt is released from an electric furnace, consisting of a fixed U-shaped box, water-cooled umbrellas with movable guards and a fixed ring with openings coinciding with the openings of umbrellas.

For the purpose of a more complete suction of gases and ensuring the backfilling of heat insulating mixtures, the device prefix is movable and provided with a container fixed on its upper plane, with the center of gravity of the inserts shifted relative to the axis of rotation in the direction opposite to the container. In addition, the attachment is connected to the throttle, made with cuts from two diametrically opposite sides.

FIG. 1 shows a general view of the proposed device; in fig. 2 - device operation diagram; in fig. 3 is an AA section of FIG. one.

On the body / suction (Fig. 1) there is a U-shaped attachment 2, fixed on the axis of rotation 3, which is an integral part of the frame 4. At the end of the upper attachment plane, closest to the mold 5,

and

Capacity 6 for tenisolation mixtures is leveled. The frame with the attachment moves horizontally along the rollers 7 along the suction. The prefix is connected with the throttle by means of the pull-rod 8. The throttle movement is limited in the vertical position by the stop 10, and in the horizontal restraint 11. With the throttle fully open, the end of the throttle is inserted into a special name 12 on the frame of the attachment,

being in the starting position.

During metal casting, the attachment 2 is in the initial position I (Fig. 2). The capacity 6 is loaded the required amount

heat insulating mixture. A ha 8 throttle is engaged with the attachment, i.e., the throttle is fully open. After the metal has been poured into the mold 5, the mounting on the rollers 7 is fed forward (towards the mold). T he 8 moves with the attachment, due to which there is a gradual closing of the throttles. At the moment when the axis of rotation 3 of the attachment 2 comes out on the edge of the Cornus / Suction, the throwing occurs.

The inserts and the linking of the heat-insulating mixture to the surface of the liquid metal (pos. I, Fig. 2). The position of the axis 3 is chosen in such a way that when there is a heat insulating mixture in the tank 6, the center of the set is

shifted from the axis sz forward, and after pouring the mixture - back; Due to this, the prefix after sipaning the heat-insulating mixture takes a horizontal position and with further movement occupies the final position III above the mold 5 (Fig. 2) In the period between the tilting of the prefix 2 and the end position occupied by it, the end of the pull 8 goes out of the groove 12 and simultaneously closing throttle 9, made with cuts from two diametrically opposite sides. The presence of gaps 13 around these cuts allows, with a fully closed choke, to create air flow over the mold and trap the gases released during the crystallization of the ingot.

Subject invention

Claims (2)

1. A device for suction of gases released during ingot crystallization in a mold, including a suction body with a U-shaped attachment and a choke, characterized in that, in order to more completely suck gases and ensure the filling of heat-insulating mixtures, the attachment is made mobile and has a capacity mounted on its upper plane, the center of gravity of the attachment is offset relative to the axis of rotation in the direction opposite to the capacitance. 2. The device according to claim 1, characterized in that the prefix is connected tightly to a throttle, made with cuts on two diametrically opposite sides. LT u9 Yu 02 2 / 3