The new rolling mill will be built in Sanmenxia, in the Henan province, and have an annual production capacity of 300,000 metric t. It will be capable of processing all aluminium alloys in groups 1xxx to 8xxx especially including aluminium alloys for aerospace and automotive applications. The SmartCrown system will be used, ensuring adherence to the narrow tolerance specifications for the profile and flatness of the hot strip. Commissioning of the rolling mill is already scheduled for the second half of 2020.
The aluminium rolling mill is part of a new integrated production site. Primetals will be responsible for the overall mill design of the mechanical and electrical systems. The rolling mill will comprise a combined roughing and heavy plate line on which either transfer bars or plates can be produced. The roughing and heavy plate line will handle ingots with thicknesses between 400 and 830 mm, widths from 1,050 to 2,650 mm and lengths from 2,000 to 8,400 mm. The plant can produce heavy plate with a thickness of 12 to 250 mm and widths between 1,020 and 4,350 mm or transfer bars of 150 m in length and widths of up to 2,950 mm, which will be processed further in the finishing mill. Driving power is twice 7 MW in the roughing/heavy-plate line. A heavy-duty vertical edger, shear systems for cutting plate and transfer bars, roller tables for the various products areas and equipment for piling plates complete the roughing and heavy plate line.
On the three-stand finishing mill, the transfer bar is rolled down to 2 to 12 mm and widths from 1,000 to 2,950 mm. The maximum coil weight is 30 metric t. The three-stand finishing mill main drive has a power rating of 7 MW on each stand. Narrow profile and flatness tolerances can be achieved with the SmartCrown system from Primetals.
Primetals´ scope of supply will also include the fluid systems for hydraulics and coolant, a fume extraction system, the complete drive and MCC (motor control center) system. Additionally, the mill will be equipped with basic (level 1) and process (level 2) automation. This includes the latest state of the art technological controls system and the precise mill-setup based on physical models. Primetals will also be responsible for site supervision and commissioning work and will handle the training of the operating personnel.
_{(Source: Primetals Technologies, Limited)}