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分析了某种大型铝黄铜轴套的工况,推荐高锰铝青铜作为轴套材质,获得用户采纳。着重讨论了离心铸造工艺参数的确定,采用带弯嘴浇口的漏斗侧流式浇注系统,使浇注的合金液在最初3 s内能均匀铺型,且铺型厚度δ≥7 mm,能有效地预防重皮、冷隔缺陷的产生。还对防止大型轴套可能产生的气孔缺陷进行较为深入的探讨。此外,对含镍高锰铝青铜ZCu Al8Mn13Fe3Ni2的化学成分进行优化,获得了高强韧的综合力学性能。
Analysis of a large aluminum brass sleeve condition, recommended high-manganese aluminum bronze as a sleeve material, access to users. Focusing on the determination of the centrifugal casting process parameters, the side-flow pouring system with a bevel gate is used to make the poured alloy liquid evenly spread in the first 3 s, and the thickness of the pavement is more than or equal to 7 mm, which is effective Prevention of heavy skin, cold defect generation. But also to prevent large-scale bushings may produce blowhole defects in more in-depth discussion. In addition, the chemical composition of nickel-containing high manganese aluminum bronze ZCu Al8Mn13Fe3Ni2 was optimized, and the high strength and toughness mechanical properties were obtained.