Method for the production of roller out of cast-iron with ball graphite, with more than one radial undercut, comprises simultaneously engraving roll barrel and prefabricated contour of the roll barrel

摘要

The method comprises simultaneously engraving roll barrel and prefabricated contour of the roll barrel following to edge-layer hardness in multi-part mold of cast iron. Floatable and reusable mold insert (1) out of cast iron is used in a cylindrical main mold (2) for forming a radial undercut and simultaneously the critical cooling speed of the cast material of the roller is exceeded through the heat capacity of the mold insert. The cast material of the roller obtains one of the prefabricated contours following to edge-layer hardness of the roll barrel. An independent claim is included for a device for the production of rollers out of cast-iron with ball graphite with more than one radial undercut.