从五十年代初开始,我厂已采用 HMn52—2—5黄铜材料生产机车车辆的某些零件。三十年来,用 HMn52—2—5黄铜生产的零件已达数十万件。零件使用证明,这种黄铜具有较高的强度和耐磨性能。同时,由于该合金中锌元素的含量较高,在铸造过程中也具有较好的流动性,不容易形成缩松和偏析。在经过锻造后,其性能还能得到进一步的改善。 Since the early 1950s, our factory has used HMn52-2-5 brass material to produce certain parts of rolling stock. For three decades, parts made of HMn52-2-5 brass have reached hundreds of thousands. Parts used to prove that this brass has high strength and wear resistance. At the same time, due to the high content of zinc in the alloy, the casting process also has good fluidity, not easy to form shrinkage and segregation. After forging, its performance can be further improved.