Schumacher E.E.,TECHCOM GmbH |
Semenyak M.Y.,TECHCOM GmbH |
Smoktiy V.V.,TECHCOM GmbH |
Porokhnyavyi V.G.,TECHCOM GmbH in Ukraine |
Zazyan A.S.,Belarus Metallurgical Plant
Metallurgist | Year: 2012
This article describes the sequence of operations performed in an impulsive purging technology developed by the company TECHCOM. The technology was used to treat different grades of steel in a 120-ton ladle. Data presented in the article substantiate the effectiveness of the new technology. © 2012 Springer Science+Business Media New York.
Kohl R.,TECHCOM GmBH |
Enders V.V.,TECHCOM GmBH |
Bondarenko I.A.,Belarus Metallurgical Plant
Metallurgist | Year: 2012
The firm TECHCOM GmBH (Germany) together with MISiS (Russia) has developed and patented an immersion, closed-bottom nozzle FOSULIS for casting special steels. The FOSULIS nozzle is fitted with a "skirt" fastened to the bottom of the outside of the nozzle above the lateral outlet channels arranged in a fan pattern over the perimeter of the nozzle cross section. In this case, steel is fed into the volume of liquid metal within a mold by distributed streams, and axial flow is inhibited. The nozzle has been tested under production conditions for casting ball-bearing, rail, and structural steels. Use of the nozzle makes it possible to reduce steel contamination by a factor of two to three, and to improve macrostructure quality indices by a factor of two. Additional testing of the FOSULIS nozzle is planned in casting high-quality, high-carbon steel for cord with increased specifications for non-metallic inclusions and carbon segregation. © 2012 Springer Science+Business Media New York.
TECHCOM GmbH | Date: 2010-04-07
The invention relates to the iron and steel industry, more specifically, to continuous slab casting using a submerged nozzle. The inventive submerged nozzle comprises a bottom, lateral channels and a skirt which is secured to the lower part of the nozzle above the output lateral channels and is formed by two parallel flat surfaces which are gradually conjugated on the ends thereof by means of cylindrical surfaces. The nozzle is arranged in the center of the skirt and has two similar oppositely positioned lateral channels having a common longitudinal axis which forms together with the parallel flat surfaces of the skirt an acute angle ranging from 20 to 45.
TECHCOM GmbH | Date: 2010-02-17
The invention relates to producing and processing liquid metal in metallurgy. The inventive tuyer device comprises a well block with a built-in shell, coaxial metal pipes arranged inside the shell, a central working channel and an annular channel encompassing the working channel on the side of a device introducible into the liquid metal, wherein the channels are separately connected to ducts for supplying gas media to the metal and the coaxial metal pipes consist of two interconnected sections of different diameters, the second section having the larger diameter, being connected to the ducts for separately supplying gas media to the working channels of the first section, being provided with an extra pipe and having the annular channels only, the gaps of which are in the form of capillaries for the liquid metal, the internal section of the central pipe being closed on both ends and filled with a refractory material.
TECHCOM GmbH | Date: 2010-03-31
The invention relates to steel production in the steel and iron industry. The inventive method consists in dividing a solid slag stream which flows from a metallurgical vessel and falls down, into individual streams along the solid stream, in forcedly cooling the thus obtained individual streams, in dividing the individual streams into parts (pieces) by cutting across the movement thereof, in forcedly cooling said parts and transferring to a belt conveyor, on which said separate parts/pieces are forcedly cooled and transported away from the vessel. A shaped (with containers) conveyor belt, on which the slag pieces are crushed by means of a cylindrical roll, is used for additional crushing. The inventive device for carrying out the totality of the above-listed operations, comprises at least three throat grates which are horizontally positioned in an assembled body and one of which is provided with a drive for carrying out reciprocating motion. The device also comprises a drive for displacing to/from the vessel. In the position closet to the vessel, the device is fed with air and water from a stationary plant for forcedly cooling the individual slam streams and the parts (pieces) of slam. The throat grate displacing drives and a conveyor belt drive are mounted on the device assembled body, and the roll and a drive for rotating it, when the shaped belt is used, are fastened thereto. The ribs of the throat grate are made from tensioned steel ropes.