机械制造工艺的不断更新,广泛地采用了冷挤、冷镦、热挤和精密锻造等少无切削工艺。这些工艺有着变形能量大,速度快、生产率高、零件质量好及用料省等特点。但也对模具材料相应地提出了更高的要求。为了适应上述形势要求,几年来在兄弟单位的协助下,研制成功了一种强度高、韧性 Mechanical manufacturing process continuously updated, widely used in cold extrusion, cold heading, hot extrusion and precision forging and other non-cutting technology. These processes have a large deformation energy, speed, high productivity, good quality parts and materials and other characteristics. However, mold materials are also correspondingly higher requirements. In order to meet the requirements of the above situation, in the past few years with the help of fraternal units, the successful development of a high strength, toughness