Primetals modernizes electric steel production

China Steel Corporation (CSC) has signed a contract with Primetals Technologies for an upgrade of the pickling line and tandem cold mill (PLTCM) at its plant in Kaohsiung, Taiwan. Startup is scheduled for September 2025. Primetals Technologies is responsible for the engineering and supply of equipment as well as advisory services for construction work and implementation.

Increased production

 The existing plant is designed as a 4-stand tandem cold mill. The upgrade by Primetals Technologies will revamp stands 2, 3, and 4 to incorporate Hyper UCM technology and add an induction heater as well as a No. 0 stand at the entry side of the existing mill. Recent similar upgrade projects to improve high-grade electrical steel production were a key factor for CSC when choosing Primetals Technologies as its supplier.

Thanks to the upgrade, CSC’s electrical steel production capacity will be increased. Developed by Primetals Technologies, Hyper UCM technology offers higher reduction rates and greater control options to determine the shape of advanced high-strength steels (AHSS).

Thinner strip

The technology is based on an optimised combination of roll diameters for work, intermediate and backup rolls and enables the use of work rolls with smaller diameters while maintaining a high reduction capability. Compared to the standard UC mill, it can roll materials of much higher strength into thinner strips while achieving higher levels of quality and productivity.