31340975[metal forming processes and techniques]PT2026-03-30 20:31:57BT31317129metalworking processes and techniquesPTNT31371897swagingPTNT31371899millingPTNT31371901drawingPTNT31371903forgingPTNT31371906spinningPTNT31371909smeltingPTNT31371910hot-rollingPTNT31371913cold-workingPTNT31371917strikingPTNT31371919raisingPTNT31371923puddlingPTNT31371925carburizationPT