大型注塑机模板球化不良和球化衰退缺陷研究  

Research on the Defects of Poor Balling and Spheroidization Deterioration of Large Injection Molding Machine

作　　者：吴炜煌 WU Wei-huang(Technical Department, Zhejiang Teri Heavy Machinery Co., LTD, Deqing 313200, China)

机构地区：[1]浙江泰瑞重型机械有限公司技术部,浙江德清313200

出　　处：《湖州职业技术学院学报》2017年第3期81-84,共4页Journal of Huzhou Vocational and Technological College

摘　　要：大型注塑机模板不仅尺寸大而且壁厚,在铸造时热容量大、凝固缓慢,极易造成球化与孕育衰退以致球化不良,从而引起铸件力学性能下降,特别是伸长率和低温性能的降低,使铸件不合格。研究表明:通过对原材料配比的控制及熔炼工艺的优化,能有效地降低球墨铸件球化不良和球化衰退缺陷的发生概率,使铸件成品率得到提高,质量得到保障。The large injection molding machine platens are not only large sizes but also big wall thickness,so the heat capacity is large and solidification is slow.This characteristic is easy to cause the spheroidization,inoculation fading and nodularizing,then the mechanical properties will be variation,especially the elongation and low temperature performance will be down.By controlling the ratio of raw materials and optimizing the melting process,the probability of spheroidization and spheroidization defects of spheroidal graphite castings was effectively reduced,and the yield of castings was doubled.

关 键 词：大型注塑机模板 球墨铸铁 原材料配比 熔炼工艺 

分 类 号：TG255[金属学及工艺—铸造]