Siemens to Automate Indonesia's PT Krakatau Steel Plant

Siemens Metals Technologies has received an order from PT Krakatau Steel of Indonesia, to equip parts of the hot strip mill in Cilegon with new electrical and automation equipment. The conversion work will be carried out in 2010 during a scheduled shutdown of the plant..

Siemens will supply and install the basic and process automation for the reversing roughing stand, the six stand finishing mill and the cooling section of the hot strip mill. The automation equipment to be used is part of the “Siroll HM” solution developed specifically for hot rolling mills.

Simatic TDC and the WinCC visualization system will be used as the basis of the system for basic automation. Fujitsu-Siemens computers will be provided for process automation. Online process models generate the pre settings for the roughing mill, the finishing mill and the cooling section and also supply the parameters for the control and adjustment algorithms during ongoing production. According to Siemens, the new automation system will mean that the plant will be able to precisely roll and cool modern high strength steel grades.

In addition, Siemens is supplying model predictive controllers for the finishing mill and the cooling section. The equipment will be fitted with a microstructure monitor, which calculates properties of materials such as the yield point and tensile strength online. Time-consuming tests of materials in the laboratory will therefore be rendered superfluous.

The project will be carried out in a consortium with SMS Demag AG. Siemens Metals Technologies is responsible for project management and engineering of the systems and components. Installation and commissioning will be carried out in conjunction with PT Siemens Indonesia.