In late January, Primetals Technologies received the order to supply a 6-stand tandem cold mill (TCM) for a new plant of Shougang Qian’an Electric Vehicle Electrical Steel Co., Ltd. (Shougang Qian’an) in Qian’an City, Hebei Province, China. The TCM is designed as a Hyper Universal Crown Control Mill (Hyper UC-mill). The start-up is expected for mid-2022.

Hyper UC-mills employ smaller diameter work rolls, thus reducing rolling loads. This allows for the production of harder and thinner materials with improved product quality. All six stands of the Hyper UC-mill are equipped with a work roll shift function, marking its first application to this mill type, to enable precise edge profile control of high-grade electrical steels. In addition, the mill concept saves investment and maintenance costs.

The mill will enable Shougang Qian’an to meet the growing demand for electrical steels spurred by increasing requirements for end uses in e.g. vehicle electrification and AHSS-grades.

Primetals Technologies is responsible for engineering and supply of the mill as well as for supervision of erection and commissioning. The mill type is a well-suited solution to cold-roll such harder and thinner materials with high quality and high productivity by utilizing smaller work rolls driven by a work roll drive system. It will produce electrical steel grades, AHSS grades, tin grades etc. in thickness between 0.18mm and 2.5mm with widths ranging from 750mm to 1,320mm.

Shougang Qian’an is part of the Shougang Group Co., Ltd. In 2018, the group produced 27.4 million metric tons of steel. Previous projects with this customer included the supply of four 20hi-HZ-mills for the production of high permeability grain-oriented (HGO) and a PL-TCM for the production of non grain-oriented (NGO) steel grades.

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