Shape optimisation of thin carbon steel strip

Company profile:

Böhler Uddeholm Precision Steel AB is situated in Munkfors, Sweden. The company has around 150 employees and produces high quality cold rolled strip steel for razor blade, valve steel and Paper & Printing markets. The company is part of the The BÖHLER-UDDEHOLM Group, which forms the second largest division in the voestalpine Group (Special Steel Division). BÖHLER-UDDEHOLM has around 14,700 employees and markets its products and services in roughly 100 countries on all continents. BÖHLER-UDDEHOLM is a highly specialized niche provider in the specialty steel sector.

Aim of project:

To increase understanding and prevent existence of local shape defects on strip steel

Materials:

Thin, Carbon steel

Company supervisors:

Henrik Samuelsson, Carl Ekstam

Suggested scope:

Laboratory heat treatment cycle evaluations
(stress relieving)

• Comparison of rolled shape and local shape distortion after hardening
• Residual stresses before and after hardening
• Induction heating of coils, productivity and quality increase

More detailed description available at demand.

Suggested timeline:

• Literature search & Introduction
            4 weeks
• Laboratory evaluation of stress relieving of strip steel
            4 weeks
• Industrial trials rolled shape / hardened shape
            4 weeks
• Evaluation of new possible production routes
            2 weeks
• Extra time for trials, evaluation etc.
            2 weeks
• Report writing
            4 weeks

Suggested goals:

• To find good comparison method between rolled shape and final shape
• To evaluate possible solutions to avoid local shape defects.
• To suggest future possible production parameters/methods

Contact information:
Henrik Samuelsson
Production Technology
Box 503
SE-684 28 Munkfors
Mob:  +46 732 744 239
Tel: +46 563 160 53
E-mail: henrik.samuelsson@bu-strip.com

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