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Mold is indispensable in modern industrial production equipment, but the the die working conditions more harsh, such as cold extrusion unit extrusion pressure up to 2000MPa accompanied by intense friction of the metal mold surface mold flow resulting mold The rise in temperature, so the mold often occurs oxidation die sticking or welding, and other phenomena, aggravate the wear of the die, and reducing the mold life. Therefore, the choice of high wear resistance, high hardness mold material has become an important way to improve the life of the die. To improve the mechanical properties of the metal ceramic mold material, prepared by hot pressing sintering method higher mechanical properties of Ti (C, N) nano-composite metal-ceramic mold material, material composition, microstructure, sintering process and the relationship between the material mechanical properties. Ti (C, N) Toughening mechanism of nano-composite metal-ceramic mold material and Ti (C, N) friction and wear characteristics of nano composite metal-ceramic mold material studied. Experimental study in nano ZrO 2 micron WC nano composite metal ceramic mold material mechanical properties and microstructure of Ti (C, N) and the Ti (C, N) based nanocomposite metal hot-press sintering process of the ceramic mold material has been optimized, the final preparation of the better mechanical properties of Ti (C, N) nano-composite metal-ceramic mold material, the flexural strength of 1144MPa, fracture toughness to 8.60MPa · m < sup> 1/2 , hardness of 14.57GPa, and with Ti (C, N) fund compared to the case of the ceramic mold material, although the hardness decreased, but the flexural strength and fracture toughness were increased by 16.73% and 40.07%. Ti (C, N) prepared in nano-composite the metal ceramic mold material, nano ZrO 2 powders add detailed Ti (C, N) funds are the grains of the ceramic mold material , and Ti (C, N)-based body became mixed crystal / crystal \In addition, at the nanoscale Ti (C, N) based nanocomposite ZrO 2 phase transformation toughening, crack bridging, crack deflection and branching Toughening mechanism of synergy The mechanical properties of the metal ceramic mold material has been improved. Prepared Ti (C, N) nano-composite metal-ceramic mold material, the experimental study of friction and wear properties and microstructure morphology observation and analysis of the wear surface of the sample by means of scanning electron microscopy and X-ray diffractometer. study the wear mechanisms of Ti (C, N) nano composite metal ceramic mold material, the wear mechanism is mainly abrasive wear, oxidation, wear and adhesive wear, while the Ti (C, N) Fund is a ceramic mold material wear mechanisms The flaking of the grains and brittle fracture. Finally, the preliminary mold manufacturing process validation.
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