BFI VDEh-Betriebsforschungsinstitut GmbH

Situation:

• Partially high wear rates can appear at hot rolling of profiles due to thermal and mechanical stresses.
• High mechanical abrasion and increased surface disruption at groove zones with high levels of forming.
• This leads to decreased surface quality and tolerance variations and increased groove and roll changes.

Solution:

• Determination of mechanical and thermal stresses of selected profiled rolls.
• Further development of the Machine Hammer Peening for the adaption on profiled rolls.
• Optimisation through variation of the Machine Hammer Peening parameters for improving the roll material concerning mechanical and tribological properties.
• Development and construction of an industrial prototype, including control software.
• Industrial tests and verification of the effectiveness of the method.
• Cost-benefit analysis for the evaluation of the potential of the method.

Operational benefit:

• First implementation of the Machine Hammer Peening on profiled rolls.
• Development of a suitable method concept and industrial prototype.
• Particularly the controlling for the mechanical treatment.
• With the new method parameters the equipment and also the controlling will be able to treat critical roll zones.
• Decreasing wear, Increasing roll service life, improving surface quality.