Contemporary systems are considered for pouring metal from a ladle using unified double-plate slide gates of the BTM series produced by OOO NPP Vulkan-TM and sets of refractories appropriate for them. Attention is drawn to the use of these systems in small metallurgical enterprises. Experience is considered of operating slide refractory plates of domestic and imported production. A method is proposed for manufacturing refractory components for slide gates by casting with subsequent vibration levelling. A device is considered for blowing metal in a ladle with inert gas, improving its quality.Alongside contemporary large metallurgical combines there are a large number of engineering enterprises with different profiles within whose structure there are small metallurgical plants and production. A typical feature of them is the relatively ageing equipment, lack of extra-furnace metal processing, pouring of metal from teapot ladles, or in some cases by means of a stopper mechanism, that affect metal quality and its cost.The modern tendency of metallurgical production is finishing and processing of metal in a ladle after melting or melting followed by pouring from a ladle with a slide gate. Slide gates are being used more extensively since they make it possible to improve considerably the level of automation of the pouring process; to accelerate ladle turnover, shortening their servicing time; to increase the accuracy of dispensing metal with the possibility of changing the size of portions within the limits of a single melt; to reduce unplanned metal loss. Slide gates are ergonomically inserted into a pouring system for metal from ladles.Currently slide gates are known from a number of overseas firms such as Vesuvius (Belgium -USA), Voest-Alpine (Austria), Interstop, Stopinc AG (Switzerland, Didier-Werke (Germany), International Industrial Engineering (Belgium), Shinigawa Refractories (Japan), Flogates (Great Britain), etc. Undoubtedly, slide gates of overseas firms exhibit a number of advantages, although their cost and refractories for them significantly exceed the cost of domestic analogs; the cumbersome nature of structures and refractories, the servicing specifics and training of personnel also markedly hinder mass application of imported slide gates.There is competition with overseas firms in the domestic market by Russian firms specializing in producing sliding systems and refractories for them. This relates to the firms OOO NPP Vulkan-TM, Tula, and ZAO Shiber, Moscow.The firm OOO NPP Vulkan-TM from 1997 to present time has developed a range of unified two-plate slide gates of the VTM series (Table 1) and appropriate sets of refractory components for them in metal shells and straps.Considering the stringent requirements laid down for slide gates during pouring of steel into CICM, in recent years OOO NPP Vulkan-TM has developed and introduced into series production a new generation of slide gates of the magazine type VTM 60 -80 (ladles with a capacity of 150 -300 tons), VTM-50 (ladle capacity 50 -150 tons), and V...
The achievements of NPP Vulkan-TM in the production of basic forms of production (slide gates, vibration-molded refractories, ceramics, systems for blowing metal with argon, etc.) are analyzed. Specific attention is devoted to the development and introduction of a new slide gate VTM-50V, the results of testing the life of plates of Russian and overseas production within a new generation of slide gates, and also vibration-cast high-alumina refractories within a set of refractories for slide gates of the VTM series.
The article deals with the development of devices for mechanization and automation of metal flow control – steel-pouring ladles sliding gates of the new generation of Vulkan-TM production, the history of their production.The various technical solutions underlying the creation of the sliding gates of the «VT» series, innovative solutions used in design of the sliding gates layouts and their competitive advantages are shown.The design and operation principle of the new development – the device for gas-dynamic protection of the metal stream from secondary oxidation is described.
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