Method for straightening of a FeCrAl alloy tube

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United States of America Patent

PATENT NO 11724299
APP PUB NO 20200360978A1
SERIAL NO

16958175

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Abstract

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The present disclosure relates to a method for straightening of a tube comprising a ferritic FeCrAl-alloy. One reason for the challenges regarding the cold working of a hollow of a ferritic FeCrAl-alloy into a finished tube is that FeCrAl-alloys have a low ductility. Even if a tube of a FeCrAl-alloy is obtained by cold working a hollow into a tube, the tube can hardly be straightened. This is even more a problem if a tube obtained is annealed, wherein the annealing leads to a deformation of tube along the longitudinal direction of the tube. Therefore, there is a need for a method for straightening of a tube comprising a ferritic FeCrAl-alloy. Thus, according to the present disclosure a method for straightening of a tube is suggested, wherein the method comprises the steps of providing a tube comprising a ferritic FeCrAl-alloy, heating the tube, and straightening and forming the heated tube by stretching.

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Patent Owner(s)

  • SANDVIK INTELLECTUAL PROPERTY AB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Froböse, Thomas Versmold, DE 22 28
Rave, Fernando Västerås, SE 5 0
Wickman, Krister Hallstahammar, SE 4 1

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