单体铸造活塞环皮下气孔的预防和消除第一汽车集团公司铸模厂周传文１前言气孔是铸造生产中常见的主要缺陷之一，严重影响铸件质量和产品机械性能。特别是单体铸造的活塞环，其断面薄而小，且机械性能、抗蚀性及耐热性要求很高，一旦受气孔侵扰后果不堪设想，因此必须杜绝... Prevention and elimination of subcutaneous pores in single-casting piston rings Zhou Chuanwen, Mold Factory of FAW Group1 Introduction Pore is one of the most common defects in foundry production, which seriously affects the quality of castings and the mechanical properties of products. In particular, the single-casting piston ring, the section thin and small, and mechanical properties, corrosion resistance and heat resistance demanding, once the consequences of stomata intrusion unimaginable, it must be put an end to ...