灰铸铁薄壁类变速箱壳体消失模铸造工艺的优化  

Optimization of Lost Foam Casting Process of Gray Iron Thin-wall Gearbox Housing

作　　者：扈广麒 杨争光 朱文文 HU Guangqi;YANG Zhengguang;ZHU Wenwen(Kocel Machinery Limited,Yin Chuan 750021,Ningxia China)

机构地区：[1]共享装备股份有限公司,宁夏银川750021

出　　处：《铸造工程》2020年第6期19-24,共6页Foundry Engineering

摘　　要：从浇注系统设计、埋箱设计、负压度、碳当量、浇注温度等方面,对灰铸铁薄壁变速箱壳体铸件的真空负压消失模工艺进行优化。试验结果表明:浇注温度提高至1510℃以上、碳当量4.1%、负压度0.49,同时采用铸件承压区域端朝下的埋箱方式,浇注系统单箱双水口、三层阶梯式多点进流快速浇注工艺,可以获得高质量的铸件。This paper summarized the optimization process of vacuum negative pressure vanishing die process for gray iron thin-wall gearbox case,based on pouring system design,burying box design,negative pressure degree,carbon equivalent,pouring temperature and so on.The results showed that the pouring temperature was raised to 1510℃,CE was controlled to 4.1 and the negative pressure was controlled to 0.49,high quality thin-walled gray iron gearbox case can be obtained by adopting end-down buried box method in the casting bearing area,single box double water port in casting system and three-layer stepped multi-point feed rapid pouring。

关 键 词：变速箱壳体 浇注系统 负压度 碳当量 浇注温度 

分 类 号：TG251[金属学及工艺—铸造]