射芯机在工作时产生很大的噪声,本文阐述了影响排气噪声的因素。为降低射芯机的排气噪声,我们研制了一种新型的多孔陶瓷消声器。这种消声器结构简单,制作方便,消声量大,性能稳定,工作可靠。通过大量试验,制订出多孔陶瓷消声器的主要结构参数,可供系列化、定型化设计作为依据。多孔陶瓷消声器可广泛应用到各种气动机械中。 The core shooter generates a lot of noise at work, and this article explains the factors that affect the exhaust noise. In order to reduce the exhaust noise of the core shooting machine, we have developed a new type of porous ceramic muffler. This muffler has the advantages of simple structure, convenient manufacture, large muffler volume, stable performance and reliable operation. Through a large number of experiments, the main structural parameters of the porous ceramic muffler are drawn up, which can be used as a basis for serialization and finalization design. Porous ceramic muffler can be widely used in a variety of pneumatic machinery.