• Primetals Technologies to upgrade power and electrical system at slab sizing press with new cycloconverter and low-voltage AC drives
  • Modernization will ensure increased availability and future-proofed supply of spare parts
  • Implementation scheduled for December 2024

Salzgitter Flachstahl, a subsidiary of the Salzgitter Group, has recently tasked Primetals Technologies with a comprehensive upgrade of its power and electrical system for the slab sizing press in its hot-rolling mill in Salzgitter, Germany. Primetals Technologies won this order following the completion of a successful crop-shear project at the same mill.

Increased Availability

The slab sizing press was designed to reduce pre-heated slabs in width, by up to 350 millimeters. The equipment's drive technology is divided into two groups: the main drive, fed by a direct converter, and the supporting drivers, provided via DC-link converters featuring a common DC-link. This project will renew the converter technology for all the drives in both groups, and is aimed at increasing the availability of the production line while ensuring secured spare-part supply conditions for the power and electrical system.

The scope of supply encompasses a new cycloconverter for the main motor of the press, new low-voltage multi-drive DC-link converters for the pinch rolls and for gap adjustment, as well as implementation and startup services. The replacement of the drive systems will take place during planned standstill periods.

A Strong and Long-Lasting Partnership

Primetals Technologies and Salzgitter Flachstahl have collaborated on numerous projects over the last few decades, all the while building a strong and dependable relationship. As an example, Primetals Technologies recently improved the LD converter (BOF) process by executing a Level 2 automation upgrade, resulting in an optimization of lime quantities and an increased number of successful heats. Salzgitter Flachstahl is the largest subsidiary of the Salzgitter Group and produces hot-rolled strip, hot-rolled sheet, cold-rolled sheet, and surface-finished products at thicknesses from 0,4 to 25 millimeters and widths of up to 2,000 millimeters.

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Mitsubishi Heavy Industries Ltd. published this content on 24 April 2024 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 25 April 2024 06:52:12 UTC.