本文介绍了电子打印机用高韧性硬质合金打印针的研制与开发。重点讨论了湿磨时间对WC晶粒度分布的影响;成形剂的种类及最佳用量,成形剂的加入方式和脱除规律;针坯的挤压和烧结对最终产品性能的影响等。 This article describes the electronic printer with high toughness carbide print pin research and development. The influence of wet milling time on the distribution of WC grain size, the type and dosage of forming agent, the adding method and removing rule of forming agent, the influence of extrusion and sintering of needle blank on the properties of final product were discussed.