Cherepovets steel mill, one of the largest integrated
plants for the production of steel in the world (included in division "Severstal Russian
steel"), has received the first experience of manufacture of components of technological
units of high-strength steel grades SeverHARD 450 of its own production.
Industrial experiments demonstrated the high wear resistance of parts,
made of new steel grades.

Steel SeverHARD has a balanced combination of strength
characteristics, in particular resistance to abrasive wear. The material is well
can be cut, welding and some machining, retains
the resistance to cracking. Such a combination of properties suitable for
the manufacture of heavy-duty products, equipment, components, assemblies,
exploited with regular high loads.

the Specialists of technical development Directorate of maintenance and Directorate of
technical development and quality (included in division "Severstal Russian
steel") implemented the project of reducing the cost of replacement of components of equipment
by applying SeverHARD 450. Now from this brand is made SITA
screens designed for the separation of raw materials into fractions in front of him
the direct feed to the blast furnace No. 5. Former SITA had to change
every 3-4 months. New, from steel of grade SeverHARD 450, – already exploited in
twice as long.

Experimental sieves made by employees of the Engineering center
"SSM-Tyazhmash" (part of "Severstal Russian steel"), in the
commissioned in August 2019. They still have to prove its
durability and as at the end of April 2020, do not require replacement. On
preliminary estimates, the annual economic effect will amount to more than 7 million
rubles.

"One of our priorities is to maintain leadership in cost reduction,
thereby providing a low cost of production in the industry. Initiatives
the use of high tensile steels for the manufacture of components allows
to increase the period between overhauls, and hence to increase the rate of technical
the readiness of units, – explained the Director for repairs "Severstal
Russian steel" Sergey dobrodey. – We plan to replicate the experience in other
parts and components of not only the Cherepovets steel mill, but the resource assets of the company."

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