HDQT plant

Rethinking existing methods: an intensive forming step integrated into a quench and tempering facility opens up new property categories for steels and high-strength materials.

Implementation of innovative technology concepts

The HDQT plant combines a HDCR mill with a conventional quench and tempering plant. A very fine microstructure with improved mechanical properties is obtained by the high degrees of deformation possible together with the flexible process temperature control. The HDQT system allows for the realisation of several technologies that can not be reproduced on conventional systems. Compared to conventionally quenched and tempered materials, the HDQT treated ones are characterised by a strength increases by similar toughness properties.

The HDQT plant in use: the XTP®-technology

The XTP® plant is in use at the Schmolz and Bickenbach Group. Since 2016, new technologies have been implemented at this facility in cooperation with Steeltec. More information can be found at www.xtp-technology.com.

The HDCR Plant - developed by GMT: extreme performance meets highest precision.

The new intensive forming process

The increased requirements on products and materials raise the need for innovative plant development. With the HDCR (High Deformation Cross Rolling) plant, the high quality final properties and the high dimensional stability of the final part are adjusted by a repetitive incremental deformation of the initial material in a single forming step within one forming cycle.

The forming process is characterised by a twisted microstructure at the case of the bar which surrounds the deformed core and leads to an increased matrial performance at various load conditions. Ultra-grain refining in the case region yields a graded microstructure with grain sizes in the range of one to five μm.

The HDCR plant is available in different dimensions. The smallest size is designed for rolling stock in the final dimension range of 12 to 30 mm with a production capacity of about one ton per hour. Larger HDCR stands are capable of forming rolling stock up to a final diameter of 100 mm, with an enlargement of the minimum achievable finished diameter to about 60 mm. Plants for even larger final diameters can also be realised on demand.