00:00The joint stock company, Jeleziana Podbrezova, originally used traditional methods, casting liquid steel into ingots,
00:08which were subsequently re-rolled and processed into other products.
00:12In the 1960s, however, the company started using a new technology, namely the continuous casting of steel,
00:18for which the first vertical continuous casting machine was used.
00:22At this time, Jeleziana Podbrezova were one of just seven metallurgical companies in the world using this technology.
00:29Twenty years later, the original casting machine was shut down, and in 1982, a new four-lane radial casting machine was built.
00:38This machine was in service at Jeleziana Podbrezova for more than three decades.
00:43The renowned Italian company, Daniele, is the supplier of the latest casting machine, for which the delivery contract was signed in May 2012.
01:07After the technical preparation and processing of the project documentation at the Daniele company, in partnership with a major supplier,
01:16Jeleziana Podbrezova decided to construct and supply some of the components for the new casting machine themselves, at the factory here in Podbrezova.
01:25Among these components, which were produced in-house, were the water cooling management of the primary, secondary, tertiary and emergency circuit,
01:34the cooling towers, the sand filters, the pumps, the treatment of the casting stand,
01:40the tundish adjustment for a higher volume of liquid steel, the furnace for heating of the dip tubes,
01:46all the new support steel structures, the supply of copper inserts of the solidification mould,
01:52the secondary cooling nozzles, the transition conveyor and the deliveries of the distribution pipelines for hydraulics, cooling water and energy.
02:01All the associated dismantling, assembly and installation work was also performed by our team here at Jeleziana Podbrezova.
02:10The final cast on the old equipment was done on 31 August 2013.
02:15Over the next few days, the old continuous casting machinery was completely dismantled.
02:21The total weight of this equipment came to 350 tons.
02:25Between the 4th and 30th of September 2013, the assembly of the new machinery was carried out.
02:33Then, at the beginning of October, the cold tests of the individual technological stages took place.
02:39On the site, we were working 24 hours a day, 7 days a week.
02:43During this period of most intensive work, we had up to 200 people working there every day.
02:49We ran the first hot test on the 10th of October 2013, just 40 days after the old machine ceased production.
02:57Multi-point straightening of the new 3-lane facility from the Danielli Company has the base radius R1 equals 9 metres,
03:06and auxiliary radius R2 equals 13 metres, respectively R3 equals 25 metres.
03:19Multi-point straightening breaks the force required to straighten the blooms into five modules of the drawing and straightening stand in one casting stream,
03:31thus reducing the risk of cracking during the straightening and ensures greater dimensional stability of the product.
03:38Installed electromagnetic stirring of molten steel in the solidification mould MEMS positively affects the cleanliness of steel in the meniscus region,
03:48removes non-metallic inclusions and gas bubbles, cleans the front of solidification mould and helps the formation of a quixiated crystal zone.
03:58A new feature is the hydraulic oscillation of the solidification mould.
04:02The hydraulic method of the oscillation table drive allows flexible and high precision setting of the oscillation parameters path,
04:10thus contributing to the high surface quality of cast blooms and longer lifetime of the solidification mould liners.
04:18The newly built air atomised secondary cooling is characterised by a higher cooling power regulation range,
04:25while ensuring a high uniformity of cooling.
04:28The result is a lower risk of reheating, respectively over cooling of the casting crust and thus the higher surface quality of cast blooms.
04:37The new information and management system with the embedded dynamic model of solidification of castings helps effectively analyse and manage processes of continuous casting.
04:50The dynamic model of solidification in real time calculates the temperature profile in a congealing material
04:57and thus provides information about important thermotechnological casting parameters.
05:03Continuous steel casting machines are a highly important part of the steel manufacturing process.
05:10Zeliziane Pogbrezova has chosen a highly reputable company to supply the machinery,
05:17which should ensure the highest quality casting of steel blooms for the foreseeable future.
05:23Let's do this!
05:28Oh yes..
05:29I was in the real style of the огонь of the past.
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05:34I'm so excited for you to ask it.
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05:40We'll see you on screen!
05:41I'm standing up here, but you're not hiding.
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05:44I'm standing up here, but you're not hiding.
05:47We're here now, not standing up here, not standing up here.
05:49I'm standing up here, have a great look,
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