Weld Quality

< Problem >   To predict the weld quality, material properties in and around the weld and the weld strengths after welding.

< Solution >   Simulation of weld nugget formation, micro structures and hardness, and weld strength tests.

< Software >  SORPAS 2D.welding, SORPAS 3D.welding and SORPAS 3D.testing.

Weld quality is represented by the following evaluation criteria:

  • the weld nugget diameter or weld length
  • the weld strength
  • the micro structures
  • the hardness and other properties around the weld
  • the risks of fracture after welding
SORPAS 2D simulates distribution of hardness.
Distribution of hardness

With the newly added functions for simulations of the metallurgical properties and residuals, it is possible to predict the distribution of microstructures (martensite, bainite, pearlite/ferrite), distribution of hardness as well as residual stresses and cracking risks in the welds after welding.

The weld strengths are also calculated referring to the test methods described by the ISO standards including Cross Tension Strength (ISO 14272:2000), Shear Strength (ISO 14273:2000) and Peel Strength (ISO 14270:2000). So it is possible to optimize the welding process window and parameters according to the resulted weld strengths.