Днепродзержинский Государственный Технический Университет
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Priority to UAA201112821ApriorityCriticalpatent/UA102439C2/en
Publication of UA102439C2publicationCriticalpatent/UA102439C2/en
Carbon Steel Or Casting Steel Manufacturing
(AREA)
Abstract
The invention relates to ferrous metallurgy. A welded lance head comprises the nozzle by through holes with nozzle inserts (blocks) introduced in holes and fixed by welded joints external to nozzle, at that each nozzle insert (block) installed outside in through hole and has circular shell on its external end, at that shell diameter exceed diameter of nozzle insert (block) and shell is fitted on level with external surface of nozzle in mounting seats which are made on external surface of nozzle coaxially through holes, at that lateral surface of nozzle inserts (blocks) is additionally fixed to inner surface of nozzle by means welded joints. The invention allows to increase resistance of welded lances and increase their life time.
UAA201112821A2011-11-012011-11-01Welded lance head
UA102439C2
(en)
A copper melting furnace for lower blown with enriched oxygen comprises a furnace body with an inner chamber and partition, at least one feed inlet, a smoke outlet, a slag outlet, a slag outlet, at least one side hole for spray guns, at least one bottom hole for spears, at least one oxygen lance and at least one spray gun.
High-alloy spheroidal graphite cast iron having an austenitic structure, use of said cast iron for manufacturing structural components and structural component made of said cast iron