Chelyabinsk, Russia
Chelyabinsk, Russia

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Kalinin S.V.,Chelyabinsk Metallurgical Combine | Komelkov E.M.,Chelyabinsk Metallurgical Combine | Grishakov M.N.,Chelyabinsk Metallurgical Combine | Bochkaryov S.P.,Chelyabinsk Metallurgical Combine
Metallurgist | Year: 2012

A new technology has been developed, tested, and introduced at the Chelyabinsk Metallurgical Combine to process cast slabs of titanium-free chromium-bearing ferritic stainless steel 12Kh17. The technology includes a decrease in the temperature and duration of the heat treatment administered in furnaces or replacement of that treatment by slow cooling of the steel in stacks near other hot metal. The technology also entails a decrease in the maximum temperature allowed for abrasive conditioning and the elimination of additional and repeat heat treatments. These changes have shortened slab processing time, increased output, expanded the range of rolled products being made, and improved the economic indices of the production process. © 2012 Springer Science+Business Media, Inc.


Burgacheva O.B.,Chelyabinsk Metallurgical Combine | Shelgaev Y.N.,Chelyabinsk Metallurgical Combine | Kostyleva N.V.,Chelyabinsk Metallurgical Combine | Ponomareva L.L.,Chelyabinsk Metallurgical Combine | Ivanov S.S.,Chelyabinsk Metallurgical Combine
Metallurgist | Year: 2011

Melting of complex austenitic-ferritic steel of grade EI654-Sh (15Kh18N12S4TYu-Sh) with rigid limitation of the ferrite content, due to customer specification, is difficult as a result of the lack of phase composition monitoring and unstable assimilation of aluminum, silicon, and titanium. A new production scheme has been developed in order to improve the prescribed composition of the steel with respect to Si, Al, and Ti, i.e., a triplex process using steel melting units of extra-furnace refining EAF ⇄ VTU ⇄CSTU. The final treatment in the CSTU makes it possible to perform extreme adjustment of chemical composition (within limited narrow concentration ranges) and to provide the minimum chromium-nickel equivalent. The set of production measures for optimizing chemical composition of the steel and metal heating temperature for forging provides fulfilment of an order for steel EI654-Sh with a ferrite grain size at point 3 of the scale. © 2011 Springer Science+Business Media, Inc.


Artyushov V.N.,Chelyabinsk Metallurgical Combine | Kudrin A.A.,Chelyabinsk Metallurgical Combine | Kirpichnikov M.S.,Chelyabinsk Metallurgical Combine | Ponomareva L.L.,Chelyabinsk Metallurgical Combine
Metallurgist | Year: 2011

With the aim of excluding defects and scrap during manufacture of disk and plate forgings of steel EP742-ID at the Chelyabinsk Metallurgical Combine work is carried out for studying alloy microstructure (including use of electron diffraction studies) for determining process ductility and the effect of microalloying on alloy process ductility. A connection is established between alloy process ductility and microalloying addition (cerium and lanthanum) content, and their optimum content in starting metal is determined. © 2011 Springer Science+Business Media, Inc.


Artyushov V.N.,Chelyabinsk Metallurgical Combine | Ptichnikov A.G.,Chelyabinsk Metallurgical Combine | Andreev V.A.,Chelyabinsk Metallurgical Combine | Myagchenkova N.P.,Chelyabinsk Metallurgical Combine | And 2 more authors.
Metallurgist | Year: 2011

A new blending complex has been designed and built to receive, store, and blend charge materials and deliver them to the batching section of a sinter plant. The equipment of the complex was made by the company Ormeto-YuUMZ (in Orsk). The complex has a rated capacity of 520 tons of charge materials per hour, which during its design and startup corresponded to an increase of 3.0 million tons in the annual output of sinter plant No. 1 after its modernization. Technical modifications were made to increase the amout of raw materials that can be proecessed and improve the quality of the charge materials and the sinter. Among these changes was the replacement of batch-operated machines (gantry cranes and dump-cars) by more efficient continuous machines (a collector, stacker, and blending unit). © 2011 Springer Science+Business Media, Inc.


Kirpichnikov M.S.,Chelyabinsk Metallurgical Combine | Sinitsyn E.O.,Chelyabinsk Metallurgical Combine | Borovinskikh M.P.,Chelyabinsk Metallurgical Combine
Metallurgist | Year: 2011

An optimum production scheme is developed and assimilated at the ChMK for preparation of roll billets of steel 150KhNM in order to provide high operating properties. Heat treatment technology is developed for roll billets of in-house production, metal properties (hardness, microstructure) are studied after different versions of heat treatment, and scrapping of billets for cracks during production is excluded. © 2011 Springer Science+Business Media, Inc.


Artyushov V.N.,Chelyabinsk Metallurgical Combine | Gorshkov N.N.,Chelyabinsk Metallurgical Combine | Barinov V.Kh.,Chelyabinsk Metallurgical Combine | Andreev V.A.,Chelyabinsk Metallurgical Combine | And 3 more authors.
Metallurgist | Year: 2010

To optimize the granulometric composition of coke fines, studies were conducted to determine the efficiency of their screening on REMA TIP TOP screens and the effect of a change in the speed of the bottom roll of the four-roll SKET coke crusher on the quality indices of the crushing operation. Use of the above screens and changing of the roll speed have reduced the amount of coke fines used for sintering without lowering the quality of the sinter. © 2010 Springer Science+Business Media, Inc.


Evseeva N.V.,Chelyabinsk Metallurgical Combine | Lazuko L.A.,Chelyabinsk Metallurgical Combine
Metallurgist | Year: 2013

This article discusses a method of determining the electrodynamic forces that develop when the current of an electric arc interacts with its magnetic field (the pinch effect). The character of distribution of the pressure created by these forces over the radius of the arc and the correctness of determining the axial force by rotating the pinch-effect force by 90 are also discussed. The authors give their point of view on the calculation and distribution of pinch-effect pressure and the method used to determine the axial force that acts on the arc. They also offer their own interpretation of the processes associated with the combustion of an arc in three-phase electric-arc steelmaking furnaces. © 2013 Springer Science+Business Media New York.


Dmitriev A.P.,Chelyabinsk Metallurgical Combine | Tolstikov A.N.,Chelyabinsk Metallurgical Combine | Dorokhin S.O.,Chelyabinsk Metallurgical Combine
Metallurgist | Year: 2013

This article discusses a project being carried out in the BOF shop at the Chelyabinsk Metallurgical Combine to describe the experience of upgrading teeming cranes and increasing their load-carrying capacity. The cost of the upgrades was minimized by maximizing the use of the existing equipment and minimizing expenditures on equipment disassembly and assembly, commissioning, and startup. © 2013 Springer Science+Business Media New York.

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