core sector communique

SMS SIEMAG

Novelis do Brasil  Ltda. Orders two- stand cold rolling mill for aluminum from SMS Siemag

The first tandem mill of its type in South America

SMS Siemag, Germany, has received an order from Novelis do Brasil Ltda. In Pindamonhangaba, Sao Paulo, Brazil, to supply a new two-Stand cold rolling mill for aluminum alloys. The two-stand tandem mill is the first of its type in South America.

The new Tandem cold mill will be used for manufacturing can stock for the beverage industry. The products will comprise strip in widths of up to 2,000 mm and with a minimum final gage of 0.15mm. The mill will be designed for an  annual capacity of 330,000 t.

The key components of this high-capacity mill are highly efficient roll bending systems, multizone roll cooling and the hydraulic roll adjustment system. A coil preparation station, an offline strip inspection facility and a pallet transport system from SMS Siemag complete and enhance the rolling mill, which will produce cold-rolled aluminum strips for high quality standards.

The SMS Siemag technology is already well known and held in high esteem by the customer due to previous supplies of equipment. An aluminum hot strip mill that had been relocated and comprehensively revamped by SMS Siemag commenced operation in Pindamonhangaba in 1999.

                                                                           

Ma’aden- Alcoa to receive hot  and coal rolling complex for aluminum flat products from SMS Siemag

 Ma’aden-Alcoa has placed an order with SMS Siemag, Germany, for the supply of a complete integrated hot and cold rolling complex for aluminum flat products, including the electrical and automation package. The ambitious Greenfield project is being implemented in Ras AZ Zawr,Saudi Arabia, by the Ma’aden-Alcoa joint venture which comprises the US aluminum manufacturer Alcoa Inc. and the Saudi Arabian mining company Ma’aden. The annual capacity of the integrated rolling complex is around 400, 000 t of aluminum strip for the manufacture of  beverage cans. The hot and cold rolling mills will commence operation in Ras Az Zawr on the Arabian Gulf already at the end of 2012.

 

SMS  Siemag is supplying the complete  roughing and finishing mills for the hot rolling mill. The roughing mill comprises a four-high roughing stand which roll down, in reversing operation, the incoming aluminum ingots of thickness up to 635 mm and weight up to 32.5 t. The roughing mill also includes one heavy and one light hydraulic crop shear for intermediate cropping and for removing the head and tail ends from the roughed ingot.

The four-stand finishing mill in four-high design rolls the roughed ingot,which has an entry thickness of around 30mm, down to a final gage of 2 to 7 mm in a single pass. In the exit section of the finishing mill, the finished strip is side-trimmed and then taken up by a hot-strip coiler with beltwrapper. SMS Siemag is likewise supplying the complete cold rollin g mill with coil preparation  station in the entry section and an offline strip inspection facility in the exit section. The powerful four-stand tandem mill in four-high design rolls the incoming aluminum hot strip, having a maximum width of 2,100 mm, down to minimum final gages of 0.15mm. The tandem mill is equipped with tried and tested actuators, comprising hydraulic adjustment, positive and negative work-roll bending and CVC plus technology. These actuator systems ensure optimum strip flatness, strip gage tolerances and a perfect strip surface.

In a later expansion stage of the works, The plant concept will make it possible to change over to filly continuous mill operation through the retrofitting of various plant components such as a double pay-off reel, welding machine, strip accumulator and carrousel reel.

Both the hot rolling mill and the tandem cold mill are equipped with all open and close-loop control systems that guarantee reliable process control of the fully automated rolling operations. The here employed systems include the Alu-Control automation system, which is part of SMS Siemag’s X-Pact  Electrical and automation package and specifically designed to meet the process requirements of aluminum rolling. In both mills, Alu-Control covers the processes  from level 0 through to level 2.

Northeast  Light Alloy Co.,Ltd.orders new CVC plus aluminum cold rolling mill in six-high design from SMS Siemag

With the new aluminum cold rolling mill, Northeast Light Alloy Co., Ltd. (NELA), China,is entering modern production of high-quality aluminum strip products. In addition to various finished  products, input stock for foil manufacture will be rolled on the CVC plus six-high stand. In view o0f the large variety of rolled products, the new SMS Siemag cold rolling mill will constitute the central production unit of the works in Harbin.

The rolling mill is designed for a capacity of 85.000 tpy and processes incoming strips with entry gages of maximum 8 mm and widths of up to 1,900 mm. The minimum final gage is 100um, the maximum coil weight 21 t.

The six-high stand is equipped with CVC plus intermediate-roll shifting and with multizone roll cooling for influencing strip flatness. A Hot Edge Spray system (HES) is provided to influence strip flatness in the strip edge area. The Dry Strip system (DS) installed in the exit section of the mill ensures that the residual oil on the surface of the rolled strips is kept to a minimum.

A coil preparation station, a coil conveyor system and the full range of utility systems complete the mill stand.

As early as in 2006, Northeast Light Alloy had awarded an order to SMS Siemag, Germany, for the engineering and supply of a mill stand for wide aluminum plate for the works in Harbin, in the northern Chinese province of Hailongjang.