SU1630868A1 - Device for mixing liquid metal with additives - Google Patents

Abstract

The invention relates to foundry, in particular, to devices for out-of-furnace processing of liquid metals and alloys. The proposed device allows to increase the absorption of metal additives, to intensify the dissolution process. Before starting the metal, the tape 12 is loaded. Metal is fed through the inclined chute and the propeller is turned on (inductor 7). The added additive enters the gap between the cloths of the mesh tape 12, which is unwound from the rollers 17. The passage through the guide rollers 13, the cloths of the tape 12 approach and clamp among themselves the additive and in this form enter the metal stream. After passing through the melt, the tape 12 is wound on the roller 14. Sensors 9 and 10 regulate the speed of drawing the tape through the speed controller 15 and the driver 16. The metal flowing down the chute is taken through the hole 3 into the drain channel and returns to the upper part of the chute Washes the mesh tape 12 with additives. Intensification of the dissolution process is achieved not only by increasing the speed of the metal, but also by increasing the contact area of the mesh tape with the metal. 1 il. th V)

Description

The invention relates to a foundry industry, in particular, to devices for out-of-furnace processing of liquid metals and alloys, and can be used for mixing the melt with various alloying and modifying additives, as well as for carburizing.

The purpose of the invention is to increase the metal absorption of additives, intensify the dissolution process, reduce the power consumption of the device and simplify its operation.

The drawing shows the proposed device.

The device comprises a heat-resistant inclined chute 1 with a diversion channel 2, communicating with it through the inlet 3 and the outlet 4 orifice and a figured separator 5 separating from the chute, the bottom of the chute. The outlet of the branch duct has a variable cross section, increasing towards the chute. Below the hole 3 on the gutter 1 is made

threshold 6. The bypass channel is provided with a propeller, for example, an inductor 7, which creates a traveling electromagnetic field and tells the metal to move in the direction opposite to the metal flow on the groove. In the lower part of the bypass channel 2, a drain hole 8 is made, closed by a refractory stopper or, for example, by an electromagnetic shutter. In addition, the device is equipped with sensors 9 and 10 of the angle of inclination of the groove and the temperature of the metal, and the element for accommodating the additive 11 is made in the form of a two-layer mesh tape 12 covering the bottom of the groove 1 on the side of the bypass channel 2, and equipped with mechanisms for guiding and moving the tape-roller 13 and 14, a belt speed regulator 15 and a motor 16. The speed regulator 15 is electrically connected to the sensors 9 and 10 of the temperature of the metal and the angle of inclination of the groove. As a tilt angle sensor gc5 CO O 00

about

00

The forehead may be a DLP (linear displacement transducer) sensor of induction, rheostat, or capacitive action. For adjustment of the tape speed, for example, the PHT-350 can be used (voltage regulator 5).

The device works as follows.

Before launching the metal, the tape 12 is charged to the chute, i.e. it is located in the mechanism of direction and movement. Metal is fed through the inclined chute and includes inductor 7. Introduced additive 11 enters the gap between the cloths of the mesh tape 12, which winds from the rollers 17. tape and thereby provides a uniform absorption of additives by the metal. When the metal consumption in the branch duct is exceeded (as compared with the flow from the melting unit or mixer), a part of the metal passing through the branch duct and flowing down the chute is again taken to the branch duct and washes the additive. Increasing the flow rate in the branch duct leads to repeated forced contact of each section of the passing mesh tape with the metal, improvements 13 of the cloth of the mesh tape 12 approach each other by | 5 mixing quality. After the window, the additive 11 is clamped between itself and the metal from the branch duct is already completed.

in this form, they enter the metal stream.

After passing through the melt, the ribbon 12 is thankfully forced onto the roller 14. Sensors 9 and 10 and repeated washes of the addition of the menaclone of the channel and the temperature of the metal with a catalyst create conditions for fast,

There is a regulation of the rate of the w-20 complete and uniform saturation of the metal with the added additive.

ki tape through the controller 15 speed and the engine 16. With sensors 9 and 10 of the temperature and inclination of the chute receives an electrical signal to the controller 15 speed tape

Thus, the use of the proposed device allows (in comparison with the known ones) to sharply increase the assimilation of

whereby depending on the great- “to the thallus of additives, to intensify the process

The input signal will change the output voltage of the tape speed controller 15, and therefore the speed of rotation of the motor shaft 16 will change, and the speed of the tape draw 12. The motor 16 must be an asynchronous DC motor. The greater the angle of inclination of the gutter and the higher the temperature of the metal discharged from the furnace to the metal gutter, the greater the speed of the tape. Below the branch duct, the metal acquires in it a velocity directed towards the movement of the metal on the groove. The cross section of the branch duct and the speed of movement of the metal in it are selected such that the metal consumption in the branch duct is equal to or greater than the consumption of metal entering the trough. At the same time, the metal flowing down the chute- bu 1 is taken out through the opening 3 into the bypass channel 2 and, returning to the upper part of the groove 1, washes the mesh tape 12 with the additive 11 located in it.

dissolution, reduce the consumption of modifier and power consumption of the device.

Claims (1)

Invention Formula Zo A device for mixing a liquid metal with additives, containing an inclined chute and attached at both ends to its bottom by-pass channel, propulsion for the message to the metal in the by-pass channel of motion directed opposite 35 to the movement of the metal on the chute, the threshold established above the branch duct, and the element for placing additives, characterized in that, in order to increase the metal absorption of the additives, intensify the dissolution process, reduce the power consumption of the device, simplify its operation, it is equipped with metal temperature and angle sensors the slope of the gutter, and the element for the placement of additives is made in the form of a two-layer mesh tape, covering 40 Intensification of the process of dissolution up to 45 bottom of the ba from the side of the branch channel, and it is equipped with a belt guiding and displacement mechanism and a speed controller of the latter, the speed controller being electrically connected to the sensors of the temperature of the metal and the angle of inclination of the groove. It is not only increased by the speed of the metal in the branch duct by adjusting the propeller, but also by increasing the contact area of the mesh tape with the metal. In addition, the counter-movement of the mesh tape with the additive and metal in the branch duct provides good washability of the saturated layer from the belt surface and thereby ensures uniform absorption of the additives by the metal. When the metal consumption in the branch duct is exceeded (as compared with the flow from the melting unit or mixer), a part of the metal passing through the branch duct and flowing down the chute is again taken to the branch duct and washes the additive. An increase in the flow rate in the branch duct leads to repeated forced contact of each section of the passing mesh tape with the metal, which improves the use of the proposed device (compared with the known ones) to sharply increase the absorption of melt thallus supplementation, intensify the process thallus supplementation, intensify the process dissolution, reduce the consumption of modifier and power consumption of the device. Invention Formula A device for mixing the liquid metal with additives, containing an inclined chute and attached at both ends to its bottom a branch channel, a propeller for imparting to the metal in the branch channel movement oppositely directed the movement of the metal on the chute, the threshold set above the branch duct, and the element for placing additives, characterized in that, in order to increase the absorption of metal by the additives, intensify the dissolution process, reduce the energy intensity of the device, simplify its operation, it is equipped with metal temperature and angle sensors gutter, and the element for the placement of additives made in the form of a two-layer mesh tape, covering the bottom of the gel ° ba from the side of the branch channel, and it is equipped with a belt guiding and displacement mechanism and a speed controller of the latter, the speed controller being electrically connected to the sensors of the temperature of the metal and the angle of inclination of the groove. 73 AALLGHHHHHLL 17 14 16 ri & i I / zl xx wwwxx /