Ferritic steels-2
In comparison with austenitic steels, ferritic steels are not as easily welded. There is
significant grain enlargement in the HAZ, with carbides being precipitated at the ferrite
grain boundaries, resulting in embrittlement of the weld and reduction of its corrosion
resistance. This embrittlement introduces a certain risk of brittle cracking occurring as
the weld cools to the brittle transition temperature of the material at about 100-200
In addition, there is a risk of transverse shrinkage cracks in the weld metal as it cools and
stresses rise. These potential problems are countered by heating the area to about
400which reduces the temperature and stress gradients.
Supplied By RIHUI Ceramic Welding Backing
Date: 2023-04-10 hits: 517 Return
Spot welding ( Ceramic Backing) 2023-04-10
Ultrasonic welding( RIHUI Backing) 2023-04-10
Spot welding( RIHUI Ceramic Welding Backing) 2023-04-10