SU553843A1 - Apparatus for producing mould castings by electroslag remelting - Google Patents

Description

with the simultaneous provision of current transmission, and pneumocline mechanisms 12 for ensuring the stability of the water-cooled panel 13, equipped with a power case 14 with the legs 15, the panel being mounted on the pallet truck by means of a hinge 16, spring-loaded with compression springs 17. By means of the hinge 18, the rod of the hydraulic cylinder 19 is fastened to the water-cooled panel 14, the body of which is attached by means of the hinge 20 to the carriage 8.

The water-cooled plate 13 has a hole 21, around the perimeter of which is fixed the cup 22 with the hydraulic cylinder 23, the stem 24 of which is connected to the cup 25, which is provided with a collar 26 for installing the pre-melted nozzle 27, the end 28 which is flush with the end 29 of the water-cooled liner 30, attached to the glass 25. The gap between the glasses 25 and 22 is equal to the thickness of the nozzle 27. The glass 22 is provided with a screw clamp 31 from turning the nozzle 27,

In the upper part of the panel there is a groove 32 in which a graphite insert 33 enters, fixed on the rod of the hydraulic cylinder 34, and a slag collector 35 is fixed on the casing 14 under the graphite insert.

The installation works as follows.

Before the start of operation, the cart 8 is located outside the furnace 1. With the help of the hydraulic cylinder 19 of the water-cooled panel 13, it rotates to the horizontal axis by an angle equal to the angle between the axes of the melted tee.

Then, using the hydraulic cylinder 23, the glass 25 is pushed up with the water-cooled liner 30. Then, using a workshop crane, the pre-smelted pipe 27 is installed on the collet 26 of the glass 25. At the same time, the panels and slag receiver 35 are suspended and the pallet 9 is installed.

By means of the hydraulic cylinder 23, the cup 25 is lowered together with the nozzle 27 mounted on the collar 26 until the end 29 of the water-cooled liner and the end 28 of the nozzle are flush with the water-cooled panel 13 side. Thereafter, fixing the nozzle 27 is produced by means of a screw latch 31 from turning (Fig. 2).

Using the hydraulic cylinder 19, the panel 13 is rotated to a vertical position, after which pneumocline mechanisms 12 are activated, which fix the panel 13 through the legs 15, ensuring its stability in an upright position, as well as pneumocline mechanisms I, which fix the pallet 9 and press it to the pan. which summed current (Fig. 3).

A cart 8 with a pallet 9 and a vertical panel 13 approaches a spring-loaded mold 3 located on the furnace I above the top level of the pallet. Then, with the help of the carriage 2, the mold 3, which is integral with the water-cooled mandrel, is lowered onto the annular base 9, which enters the gap between the crystallizer and the mandrel. Slag is poured into the smelting space, after which the consumable electrodes are lowered towards the lowering mold with a mandrel, which, on podtop 9, expands the hollow tube. The prins and the hinge, with the help of which the mold is attached, ensure its half-adherence to the panel during the whole heat.

At that moment, when the expandable pipe and vanilla slag reaches the height level of the end of the pre-melted pipe 27, the melted pipe and pre-melted pipe melt. This is the beginning of the formation of a hollow tee type part, completely made of ESR metal. There are no gaps or cracks in the places of melting, since vertical shrinkage is compensated by the outer hinge of the water-cooled sang 13 (Fig. 4).

Upon completion of the casting of the hollow tee, the slag bath reaches the level of the graphite insert 33, which is lifted upward by means of the hydraulic cylinder 34, and the slag is drained into the slag collector 35, after which the slag collector 35 is removed by the workshop crane for slag utilization (Fig. 5).

At the end of the melting, the mold 3 with the aid of the carriage 2 rises beyond the limit of the panel 13 and the carriage 8 moves away from the furnace 1, after which the pneumocline mechanisms 11, 12 are wedged and using the hydraulic cylinder 19, the reel 13 is turned with the tee produced so that the angle between the panel and the horizontal plane is equal to the angle between the axes of the tee. Thereafter, the finished product is unlocked using a screw lock 31, which is removed upwards with shop spells.

The invention allows to obtain a hollow tee of almost any cross section, which is especially necessary in nuclear power engineering.

Claims (2)

1. An apparatus for producing shaped castings using an electroslag remelting method comprising a guide column 10, a carriage, an electrode holder and a carriage with a pallet on which a mold is installed, connected to the carriage, characterized in that, in order to mechanize the process of remelting and eliminate the cracks and vertical cracks shrinking of the hot ingot, it is equipped with two hydraulic cylinders, with a water-cooled panel with a hole and two cups fixed on the tray and fixed along the perimeter of the hole in the panel captured with a glass cylinder, connected with another glass rod provided with a shoulder and a water-cooled insert mounted on the end face between the cups with a gap equal to the thickness of the original tube wall, and on the water cooled panels is hinged to a second rod hydraulic cylinder, the casing of which is hinged on the pallet truck. 2. Installation by and. 1, characterized in that the mold is mounted on the mold carriage bracket with the help of two spring-loaded trunnions. Sources of information taken into account in the examination ten 1. “Electroslag smelting of shaped castings; NIIINFORMTYAZHMASH 9-7414, M., 1974, p. 3, Fig. one. 2. "Electroslag casting, NIIMashch S-1U, Foundry engineering, M., 1974, with. 37, fig. 22 i.