lehtvormimine (lehtstantsimine) püsitemperatuuril, mis saavutatakse tööriista (stantsi) ettekuumutamisega(vt lehtvormimine; isotermsurvetöötlus), forming operations that are carried out in such a way as to eliminate surface cooling and the resulting thermal gradients in the workpart; it is accomplished by preheating the tools that come in contact with the part to the same temperature as the work metal (see: sheet forming; isothermal forming)