TPT July 2008

T ube & P ipe M ills and R ollforming L ines

Leading projects for EZTM tube and pipe rolling mills

EZTM has undertaken a range of high profile projects including the reconstruction of an electric tube- welding mill (1020), which is in operation at the Vyksa Metallurgical Plant. Such reconstruction provides a capability for rolling single-joint welded pipes with the diameter of 1,420mm and wall-thickness up to 48mm. The company has also designed and supplied a nine-stand sizing mill, which was supplied to the Izhora Pipe Plant. The mill is intended for a reconstructed tube rolling plant (140). A three-high rotary piercing mill, installed on the line at a tube rolling plant (80), has been manufactured and put into service at Seversky Tube Works. The mill can now operate with 156mm diameter sections, as supplied by Seversky Tube Works, instead of wire rod. A unique piercing mill manufactured by EZTM JSC for Seversky Tube Works has been installed on a line of a tube rolling plant (350) with pilger mill. The mill – put into service in April of 2007 – is intended for piercing F-sections with the diameter of 360-400mm, as produced by Seversky Tube Works. EZTM JSC is one of the leading designers of cold rolling mills with more than 50 configurations intended for production of tubes from 6-450mm in diameter. The company has manufactured equipment for reconstruction of a cold rolling mill (32) operating at the Nuclear Fuel Complex (NFC), India. In addition, EZTM has manufactured three sizing mills, equipment for reconstruction of a tube rolling plant (50-200), 15-stand reducing mill and other equipment for TMK and many other works in Russia and the Ukraine. EZTM JSC has built an excellent reputation for the design and supply of new machinery, together with the reconstruction of tube plants operating in Russian tube works and abroad. Electrostal Heavy Engineering Works (EZTM) – Russia

Electrostal Heavy Engineering Works (EZTM) JSC, Russia, is involved in the design and manufacture of high quality rolling, blast furnace and mineral

processing equipment and spare parts. All of the company’s equipment is certified according to ISO 9001:2000 from the British Standards Institute.

 A tube-reducing mill from EZTM

Linear cage forming on tube mills Olimpia 80, Italy, is a leading company in the design and production of complete tube mills. Based on substantial experience of tube requirements, the company has developed a new project for the fastest change of forming rolls. This tube forming system makes use of the latest technology that allows the user to vary the diameter of the produced tube without changing rolls. Olimpia 80’s unique compact system consists of 8 sequential stations –

6 operating as breakdowns and 2 operating as fin passes. These stations help achieve a final and almost complete joining of the tube.

Computerised servomotor opera- tion is used on the 14 indepen- dent axes of rolls positioning for

 A diagram of the linear cage forming system from Olimpia 80

each breakdown and the 13 axes of every fin pass. This helps to obtain, in a quick and easy way, an optimal position for the correct tube forming. The strip feeding is assured by a system of independent pinch-rolls, mounted on the first 6 stands. The major advantages of this method are the greatest flexibility, the fastest automatic change of tube size and the extreme reduction of roll costs.

Olimpia 80 Srl – Italy Fax : +39 0523 864584 Email : olimpia@olimpia80.com • Website : www.olimpia80.com

Fax : +7 496 577 7342 Email : eztm@eztm.ru Website : www.eztm.ru

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J uly 2008

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