SU573254A1 - Automatic regulator of metal flow rate - Google Patents

Claims (1)

(54) AUTOMATIC REGULATOR EXPENSE OF METAL 2L - the input impedance of the system induk metal. The input impedance of the inductor ormetapp system, defined by the formula vn vn. In turn, the components of the input impedance are determined by the form BH-- ir "o W (ci, lS) c3) XB VHtaiAiQT wl., Ccpl, p) (41 where TR ., - active component of the impedance; X.d. - reactive component of the impedance (UJ - circular frequency of the supplying inductive voltage;, AO - magnetic constant R - inductor radius. VW - number of turns of the inductor. TA functions are correspondingly abbreviated recording of improper integraps of the form T 2 pfl, (| bY) e -Y 7 l / - / 1 t4--1 av-parameter of these functions; 6 R / iuG / Oo - a parameter of these functions (V is the conductivity of the molten metal. I is the distance from the inductor to the met. The calculations are made using the formulas (1 show that with a decrease in the distance t from the inductor to the megapp, due to incompatibility of the costs of the metapp, under the crister distributor and stretching it out of the drinking machine mold, Mach increases with R g and L, and increases several times faster than RBM. The total impedance of the inductor-met system, calculated by the formula (1), decreases the H distance from the inductor to the scale and decreases. At the same time, the current of the inductor increases (when the voltage applied to the inductor is constant), and, separately, and the capacitor motor is proportional to the square of the current, leading to a decrease in the consumption of metal through the metering device. This reduction will occur until the moment when the expenditures of the metapp that is fed into the mold by the dosing unit and drawn out of the crystalliza tor by the casting machine correspond. As the distance tl increases, from a certain static value of it, the total impedance of the inductor metal system increases, the inductor current decreases, the CPV decreases, the metapp flow through the metering unit increases, the cost of the metal passing through the meter and its exhaust from the crystallizer is increased by the casting machine . FIG. Figure 2 shows the dependences of the impedance of the inductor-metalp system (koive 1) and the inductor current (curve (II) on the distance (tl) from the inductor to the metal. From these graphs it follows that with an increase in the distance from the inductor to the metal, The inductor current decreases, the calculations for which the curves are constructed (see Fig. 2) were made for an inductor with a diameter of 7 mm, the frequency of the supply of the inductor for the voltage 2SOO Hz, molten aluminum. The metal consumption has significant advantages over the known one, since it is simpler and cheaper than the known devices. At the same time, there is no need to develop and improve automatic flow controllers of the metapp, which provides savings in the national economy. metal consumption. Sources of information taken into account in the examination. 1. Verte L, A. Electromagnetic casting and processing of liquid metal, M., 1967, p. 43-53. Ztfg- oM 26 25 42J22V 20 IS1817 f5J 51 ..... h 1r5 SS789 FIG. 2 Zi 1.0 o.s 0.8 0.7 0.6 0.5 -M -0.3 0.2-0.1 h (MM)