The suitable test equipment for wire-drawing was designed. Wire-drawing tests were carried on with this equipment for TiC/Al2O3 ceramic wire drawing dies. Effect of lubrication medium and drawing velocity on the drawing force was investigated. The wear mechanisms of the ceramic drawing dies were investigated. Worn bore surfaces of the ceramic drawing dies were examined by scanning electron microscopy. The results show that lubricant media have great influence on the drawing force. The drawing force is the smallest when a grease lubricant is used. But alteration of drawing velocity has scarcely any influence on the drawing force. Detailed observations and analyses of the die wear surface reveal that the most common failure of the ceramic drawing die is the wear in the invariable zone and bearing zone owing to the greater press stresses. Abrasive and adhesive wear are found to be the predominant wear mechanisms for ceramic drawing die.

The Al2O3/TiC/Mo/Ni ceramic drawing die was developed by hot pressing sintering technology. The dry friction and wear properties of Al2O3/TiC/Mo/Ni ceramic drawing die materials and 45# steel under different loads and sliding speeds were studied on mrh-3 high-speed ring and block wear tester, and the wear rate was analyzed. The stress distribution of the drawing die of Al2O3/TiC/Mo/Ni ceramics was analyzed by finite element method. The results showed that the Al2O3/TiC/Mo/Ni ceramic drawing mold had good strength and hardness, good wear resistance at high speed, and low wear rate, maintained at 3.1×10-9cm3/(N·m). The wear of the inner hole is the most serious in the working area and the sizing area, mainly abrasive wear, and there is slight fracturing in the exit area.

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