SU1404876A1 - Device for inspecting metallurgical processes - Google Patents

Description

. (21) 4158546 / 31-26 (22) 08.12-86 (46) 06/23/88. Bul No. 23

(71) Kiev Polytechnic Institute. 50th anniversary of the Great Oct. of the Socialist Revolution of Brno (72) O.M.B. lik, L.F. Chuprovsky, A.N.Kienko, T.E.Shevchenko, L.Sh.Melik- Shakhnazarov, E.P.Golovi , V.S.Pikovskiy) Yu.V.Tregubov and V.I.Aksenov

(53) 543.053 (088.8)

(56) USSR Author's Certificate No. 415545, cl. G 01 N G / S, 1972.

Swedish patent number 345522, CL. G 01 K 1/08, 1970.

(54) DEVICE FOR MONITORING METAL AND LURGIC PROCESSES

(57) The invention relates to the field of ferrous metallurgy and can be used to control the thermal and technical regimes of a steelmaking process. The aim of the invention is to improve the quality of the sample and the reliability of the control. The device contains a quartz sampling chamber 1, bounded on both sides by ceramic plugs 2 and 3, and a quartz tube 4, two thermocouples 5 and 6 in quartz V-shaped tubes, case 7, on which a protective cap 8 is worn, and aluminum wire 9 for deoxidizing liquid metal. Quartz tube 4 is placed outside the sampling chamber 1, the upper end of the tube is bent at an angle of 90-120. This ensures the symmetry of the heat sink and the absence of cavities in the sample, since a metal jet naprakpena on the walls and bottom of the chamber, and a quartz tube has a mass strength relative to ceramic sampling channels, 1 sludge.

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The invention relates to ferrous metallurgy, in particular, to devices for controlling technological parameters of smelting in steelmaking aggregates.

The aim of the invention is to improve the quality of the sampled and the reliability of the control.

The drawing shows a device for controlling metallurgical processes, a general view.

The device contains a quartz sampling chamber 1, bounded at the top 2 and bottom 3 by ceramic stoppers, a quartz tube 4, an outer 5 and an inner 6 thermocouple in quartz V-shaped tubes, case 7, which is fitted with a protective cap 8, and aluminum wire for deacidification of liquid metal. The upper end of tube 4 is bent at an angle, o (90-12 (f.

The device works as follows.

A protective cap protects the device from liquid slag. With the passage of the device layer shpak and falling into the liquid metal

The cap 8 destroys -JQ leads to clogging of the pores in the ceramic, and the metal enters the quartz tube 4 into the sampling chamber 1, where it is deoxidized with aluminum wire 9, and forms the air at: this leaves the expired air through the porous tube 2. B This time the outdoor thermocouple 5 measures the temperature of the liquid metal. When a device is removed from a liquid metal, the sample in chamber 1 crystallizes and an internal thermocouple measures the temperature of the sample metal. From these data, a curve is constructed, from which the carbon content in the metal is determined. The whole measurement process lasts 5-10 s. After removing the device and crystallizing the sample, the device is broken, the sample is removed and transferred to spectral analysis.

The device allows to improve the quality of the produced metal due to its more accurate analysis during smelting, which reduces the scrap process at lower labor costs due to the removal of the channel for supplying the metal outside the sampling chamber, which improves the conditions for crystallization of the liquid metal, since the symmetry of the heat sink and the front is not disturbed. kris35

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Claims (1)

These plugs ensure that air and gases leave the sampling chamber during the crystallization of the sample, since the metal stream is directed towards the walls and bottom of the sampling chamber, thus ensuring the absence of gas tubes and sinks in the sample. The symmetry of the heat sink and the crystallization front of the sample is also achieved by moving the quartz tube out of the sample chamber. Obtaining a sample with a uniform symmetric crystallization front and devoid of gas inclusions improves the quality of the sample and the reliability of the measurement. Apparatus for controlling metallurgical processes, comprising a sampling chamber with a hole in the side wall for supplying metal, an external and internal thermocouple, characterized in that, in order to improve the quality of the sampled and control reliability, the device is equipped with a channel for supplying metal located outside the sampling camera in the upper part, while the upper end of the channel is placed at an angle of 90-120 axis of the channel. to vertical o 0 five talization, and this increases the accuracy of the metal crystallization temperature measurement, since a clearer horizontal pad is obtained in the time chart of the cooling, which increases the accuracy of the carbon content, and also eliminates the work associated with melting quartz to solder the channel at the bottom of the sampling chamber, which reduces labor costs for the manufacture of the device and, consequently, the material costs for monitoring the technological parameters of smelting in steelmaking units. In addition, a quartz tube, through which liquid metal enters, is introduced into the upper part of the sampling chamber and its end is bent to the angle of the bo / n five more than that (90–120 ° C), which makes it possible to control the technological parameters of melting practically at any temperature of the liquid metal, since the metal enters the sampling chamber not through massive ceramic channels with a higher heat capacity, but through a thin-walled quartz tube, blockage of pores in the ceramic is also prevented. These plugs ensure that air and gases leave the sampling chamber during the crystallization of the sample, since the metal stream is directed towards the walls and bottom of the sampling chamber, thus ensuring the absence of gas tubes and sinks in the sample. The symmetry of the heat sink and the crystallization front of the sample is also achieved by moving the quartz tube out of the sample chamber. Obtaining a sample with a uniform symmetric crystallization front and devoid of gas inclusions improves the quality of the sample and the reliability of the measurement. Apparatus for controlling metallurgical processes, comprising a sampling chamber with a hole in the side wall for supplying metal, an external and internal thermocouple, characterized in that, in order to improve the quality of the sampled and control reliability, the device is equipped with a channel for supplying metal located outside the sampling camera in the upper part, while the upper end of the channel is placed at an angle of 90-120 axis of the channel. to vertical