铝合金舱体低压铸造工艺  

Low Pressure Casting Process of an Aluminum Alloy Cabin

作　　者：邓宏强 李明杰 邓梅梅 杨小林 张晓兵 DENG Hongqiang;LI Mingjie;DENG Meimei;YANG Xiaolin;ZHANG Xiaobing(China Railway High-speed Railway Electrical Equipment Co.,Ltd.,Baoji 721000,China)

机构地区：[1]中铁高铁电气装备股份有限公司,陕西宝鸡721000

出　　处：《铸造技术》2023年第12期1163-1167,共5页Foundry Technology

基　　金：陕西省技术创新引导专项(2021QFY02-02)。

摘　　要：铝合金舱体属于回转体桶壁类铸件,产品壁厚不均匀,热节分布在上、中、下3个部位,且是全加工产品,加工后产品不能出现任何铸造缺陷,需外观、尺寸、性能均符合要求。本文以铸件结构为基础,结合低压铸造设备,对产品的浇注系统、金属型结构、工艺参数等方面进行了分析。结果表明,金属型配合砂芯设计产品的浇注系统,可将浇注系统埋入砂芯中,实现浇注系统对产品热节部位的充分补缩,合理的加工余量可实现最少的原材料消耗,适合的金属型结构和工艺参数可实现产品的稳定充型和连续生产。Aluminum alloy cabins are a type of revolving barrel wall casting,in which the wall thickness is uneven,and hot spots are distributed in the upper,middle and lower parts.It is a fully processed product,thus,after processing,the product must not show any casting defects,and needs to meet the requirements in appearance,size and performance.In this paper,based on the casting structure,combined with low-pressure casting equipment,process research and analysis of the product's pouring system,metal structure,process parameters,etc.,are carried out.Practical results show that the gating system of the product designed with a metal mold and a sand core can be embedded in the sand core,so that the pouring system can fully feed the hot spots of the product.A reasonable processing allowance can achieve the least raw material consumption.Suitable metal structures and process parameters can realize stable filling and continuous production of products.

关 键 词：铝合金舱体 热节 砂芯 浇注系统 

分 类 号：TG245[金属学及工艺—铸造]