Since mill 5000 has been widely discussed all over Russia I have decided to express my humble opinion as well to help the Russian steel industry to pay attention to the problems that have existed in the world steel industry for a long time I hope it will help the Russian steel industry to make the right choice I will do my besthellip.
I would like to present my idea of the plates and strips hot rolling mill For the first time the idea of the contemporary mill was realized in the beginning of the 90s of the XX century at Oregon Steel Mills Portland Oregon USA CoilPlate process was engineered by Tippins using some patented control systems Such a mill has proved to be one of the best in the world.
In spite of all the improvements traditional reversing mills for plates rolling are still characterized by a high percentage of spoilage low productivity high inputs when changed for a new product type as well as a considerable limitation in the range of rolled products All the improvements of the sheet by sheet rolling process have resulted in a slight increase in technical and economical indices.
Today the process based on compact cast rolling units is improved The advantage of such a technological system lies in a multipurpose use of the equipment for one line can be used to produce plates of certain sizes as well as strip coils Such a technological flexibility fully meets market requirements under conditions of a large scale production of high quality plates and coils Such a furnace coiler mill was named Steckel mill in the 30s of the XX century by the name of its engineer Mr Steckel.
Production facilities involving Steckel mills based on contemporary technological process and equipment were built at steel enterprises in USA Europe China and other countries.
Relatively low capital and operation costs 30 40 less have enabled to produce strips and plates on the furnace coilers mill with a higher efficiency in terms of quality value In 1990 2005 about 30 new or fully modernized furnace coiler mills were put into operation all over the world The total output of such mills is estimated at more than 25 mln tons a year of high quality steels of different purposes Experts believe such a trend will become stronger in the future Advantages of such type of mills become more obvious.
Coil Plate process engineered by Tippins has become a technological break through in the production of plates and coils The process has become a technological base for 148Prime four roller combined mill of the new generation built in the beginning of the 90s at Oregon Steel Mills in Portland Oregon In my opinion so far this is the best mill of such type.
The process of direct rolling of broad slabs up to 4600 mm and thickness up to 300 mm in some cases even more right after casting has been engineered and improved The process ensures a sufficient flexibility of dimensional and graded rolled products in combination with required qualitative and other characteristics of finished products The technology enables to fully use the possibilities of the traditional rolling method and rolling with controlled temperature thermal and mechanical treatment with accelerated cooling on the mill train.
Compact equipment setting considerably reduces investment costs If the equipment is set up on one plant the time of technological route from melting to finished products sales is measured not by days but by hours Models with the productivity of 1 0 1 8 mln tons a year can be started in any succession varying the range of products to meet the market requirements Production costs are reduced considerably Number of employees working in the whole complex does not exceed 300 people.
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