Optimal Residual Stress Control – ORSC

Situation:

• Trend in product development where higher quality standards with tighter material property tolerances are demanded by clients.
• Quality problems coupled to residual stresses.
• Traditional control approaches are working insufficiently.

Solution:

• Development of a new “residual-stress-based” control concept applying
  • online stress state measurement prototype for strip material,
  • improved modelling approaches able to describe material behavior under loading.

Operational benefit:

• New “residual-stress-based” control concept for improved product quality regarding residual stress state and corresponding flatness
• Prediction and evaluation of residual stresses
• Basic understanding for residual stress generating mechanisms and their sources
• Knowledge about the interdependencies of internal stress evolution and their corresponding warpage/distortion of strip products
• Identification of quality relevant process and facility specific influencing parameters

• causes
• control concept
• hardening line
• in-line measurement device
• material model
• prediction
• Residual stresses
• simulation