This paper mainly introduces tappet hot extrusion process features, hot extrusion die design and size measurement based on 150 &396 series big power and high speed engine tappet research.

• 以150系列和396系列大功率高速柴油机挺柱热挤压为研究对象,着重介绍了挺柱热挤压成形工艺特点,热挤压模设计的原则,及其尺寸检测的有效方法。