Durability of complex shape punch in thick sheet metal fine-blankingVeinthal, Renno; Peetsalu, Priidu; Saarna, Mart; Talkop, AdolfEuropean Conference on Heat Treatment and 21st IFHTSE Congress : May, 12th-15th, 2014, Munich, Germany : proceedings2014 / p. 399-406 : ill Punch lifetime in fine-blanking with optimum combination of mechanical propertiesVeinthal, Renno; Peetsalu, Priidu; Saarna, Mart; Sergejev, FjodorEuropean Conference on Heat Treatment and 22nd IFHTSE Congress : Heat Treatment and Surface Engineering from tradition to innovation : Venice (Italy), 20-22 May 20152015 / [7] p