SU910324A2 - Apparatus for moving liquid metal - Google Patents

Description

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refractory pipe and reduce gas consumption.

The drawing shows a General view of the described device ..

 The device consists of a housing 1, in which a refractory pipe 3 is clamped by a cap 2. Inside the cap 2, a branch pipe 4 is installed, which is connected to a pneumatic chamber 6 by means of a pipe 5. The movable wall 7 of pneumatic chamber 6 is connected to a vibration 8. A pneumatic chamber 6 is equipped with a valve 9 for filling the device with compressed gas.

The device works as follows.

The assembled device is installed on the mold. The compressed inert gas through the valve 9 fills the device, creating pressure at which metal is not yet pushed out of the refractory pipe 3, and the movable wall 7 of the pneumatic chamber 6 contacts the rod 8. After filling the device with gas, the valve 9 is closed.

When the rod 8 is pushed onto the movable wall 7, the volume of gas filling the device decreases, the pressure increases, which leads to the ejection of metal from the refractory tube to a depth that depends on the amount of movement of the movable wall 7 of the pneumatic chamber 6. In this case, intensive mixing of the liquid ingot core occurs. .

When the rod 8 is moved backward, the movable wall 7 occupies the initial position, the volume of the device filled with gas increases, pressure 3244

The metal falls, and the metal fills the refractory tube 3 to the initial level. The cycle is repeated without refilling the device with a compressed inert gas, which eliminates the cooling of the metal in the refractory tube. And metallisation of its internal cavity. As a result of eliminating the internal cavity of the refractory tube, the service life of the refractory tube is increased and the operational reliability of the device is increased. The device can be used to produce ingots in molds, as well as on continuous casting machines, without mixing the refractory tube for several heats and without using: new portions of compressed inert gas.

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Claims (1)

Invention Formula A device for mixing liquid metal according to ed. No. 628999, characterized in that, in order to increase the operational reliability of the device and reduce gas consumption, the device is equipped with a pneumatic camera connected through a collar with a branch pipe to the upper part of the refractory pipe, one wall of the pneumatic chamber being displaced in horizontal direction and connected non-forward Actually with the mechanism of excitation of oscillations. Sources of information taken into account in the examination  . USSR Author's Certificate Q No. 628999, cl. In 22D 7/12, 1977.