MECHANICAL REPAIR COMPLEX (MRC) The main task of MRC as plant structural subdivision – to provide smooth and technically correct exploitation of mechanical equipment of the plant and keeping it in serviceable condition.
The main directions of MRC activity ensure accomplishment of the following task: • methodological management of mechanical services of plant structural subdivisions, including: - technical policy in the sphere of repair and modernization of mechanical equipment; - definition of structure and duration of repair cycle of mechanical equipment; - technical policy in the sphere of lubricant unit organisation, methods of lubrication and assortment of lubricating materials. • assuring observation of the rules of mechanical equipment technical exploitation (RTE) and control of RTE observation in plant structural subdivision. • planning, execution of repairs and organisation of technical repairs carrying out by the forces of complex workshops, workshops of other structural subdivisions of the plant and contracting organisations. • organization of spare parts and removal equipment manufacturing and their repair in the workshops of MRC. • design and manufacturing of facilities for mechanization and automation process. At the present time, MRC comprises: • Administration; • Foundry & Forging (FF) including: • Repair Facilities (RF) • 4 shops (Mechanical Repair Shops (MRS) ¹1, MRS ¹2, Repair& Assembling Shop ¹3 (A&RS ¹3), and Steel-Structure Work Shop (SWS)) • Centre of automation and mechanization (CAM). MRC’s subdivisions participate in preparation and execution of current and capital repairs of plant`s mechanical equipment, manufacture spare parts, removable equipment and render services on repair and restoration of details, unites and parts. CAM provides design and manufacturing of equipment for mechanization and automation of processes. Technological capabilities of MRC allow to manufacture: • steel casting weighing to 48 tons; • cast-iron casting weighing to 27 tons; • bronze casting weighing to 3 tons; • forging weighing to 5 tons; • weld fabricated metal frame work (directly in the shop) - 50 tons. In the foundry shops of MRC can be produced more than 50 grades of ferrous and nonferrous alloys, including: • Cast iron (23 grades); • Bronze: ÁðÀ9Æ3Ë, ÁðÎ5Ö5Ñ5 • Steel for castings (30 grades). Technological capabilities of MRC are determined by the availability of the equipment in the shops. Including: • In FFS: - electric arc furnaces with volume 3, 6, 12 and 25 tons; - annealing furnace with bottom area 63 square metres; - electric arc furnace of direct current with volume 3 tons; - electric arc smelt furnaces with capacity 0,5 è 5,0 tons; - conveying ball casting machine with the standard capacity of 9000 t/year - steam-air forging hammer with weight of falling details 7000 kg; - shearing press with effort 1000 tons; - horizontal forging machine with nominal effort 630 tons. • In SWS: - four roll sheet and plate bending machine for bending of sheets with length 3150 mm and thickness 40 mm; - single crank and hydraulic press with effort 400 tons; - crank shears for mechanical cutting of 32 mm sheets; - numerical program control machines for flame and plasma cutting of metal with thickness 200 mm. • In MRS ¹1: - boring-and-turning machine with base plate diameter 7100 mm, maximum diameter of turning 8000 mm, height of processing detail up to 5000 mm and maximum weight up to 125 tons; - screw-cutting lathe with centre- line height 1250 mm and centre distance 10000 mm; - horizontal boring machine with mainspindle diameter 220 mm. • In MRS ¹2: - turning lathe with centre height 1700 mm and centre distance 12500 mm; - screw cutting lathe with centre height 730 mm and centre distance 16100 mm; - horizontal boring machine with mainspindle diameter 150 mm and 220 mm ; - gear milling machine for processing of toothed wheels with module up to 75 mm and crown diameter up to 5,0 ì; - base type milling machine with worktype dimensions 10,3 m õ 2,5 m and maximum weight of processed detail up to 60 tons. • In R&AS ¹3: - screw-cutting lathe with centre height 600 mm and centre distance 16000 mm; - heavy roll-turning lathe with max. diam. of detail 1450mm and with part weight up to 63 tons; - special lathe for building up of the rolls of cogging mills with diameter up to 1,4 metres, length up to 6,5 metres and weight up to 40 tons; - base type milling machine with worktype dimensions 6,3 m x 2,0 m and maximum weight of processed detail up to 50 tons. |
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OJSC "ArcelorMittal Kryviy Rih"
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OJSC "ArcelorMittal Kryviy Rih" 50095, Ukraine, Dnepropetrovsk region, Kryviy Rih, Ordzhonikidze st., 1 Tel: +38(0564) 78-53-09 Fax: +38(0564) 92-85-50 Press-service: +38(044) 284-04-91 E-mail: amkr.press-service@arcelormittal.com |