Method and device for rapidly sintering adhesive-free tungsten carbide powder

The invention provides a method and a device for rapidly sintering adhesive-free tungsten carbide powder. The method comprises the following steps: preparing a WC powder with micron-sized particle size of 0.8 micron; assembling a mold part, and performing even filling with the WC powder; performing sintering in three stages with a preheating current of 1-2 kA for 1-3 s, with a sintering current of 5-6 kA for 5-7 s, and with a heat preservation current of 1.5-4 kA for 2-4 s; applying a pressure of 15 to 30 MPa; and after electrifying is finished, maintaining the pressure and the argon atmosphere until the sample is cooled. The method has the characteristics of energy conservation, high sintering efficiency, high prepared sample strength and the like. 本发明提供了一种无粘接剂的碳化钨粉末快速烧结的方法及装置，步骤如下：微米级粒径为0.8μm；模具部件装配好，并将WC粉末均匀填充；分三个阶段烧结，预加热电流1-2kA，1-3s，烧结电流5-6kA，5～7s和保温电流1.5～4kA，2～4s；和施加压力15-30MPa；通电结束后，维持压力和氩气氛围直到样品冷却。本发明的具有节约能源、烧结效率高、制备样品强度高等特点。