HOT STAMPING DEVICE FOR PIPE AND HOT STAMPING METHOD USING THE SAME

摘要

The present invention relates to a hot-stamping molding apparatus for a material having a circular cross section which molds a pipe by a hot-stamping method and can reduce a dimensional error occurred during a hot-stamping molding process. The hot-stamping molding apparatus includes a mold to mold a material having a circular cross section, and a length of an inner circumferential side of a molding groove arranged on the mold corresponds to an outer circumferential side of the material in a cold state.