路面机械振动器壳体铸造工艺优化设计  

Optimization Design of Shell Casting Technology for Pavement Mechanical Vibrator

作　　者：纪汉成 徐德安 JI Hancheng;XU Dean(Guangdong Jinzhili Technology Co.,Ltd.,Shaoguan 512158,Guangdong China)

机构地区：[1]广东金志利科技股份有限公司,广东韶关512158

出　　处：《铸造工程》2024年第6期43-46,共4页Foundry Engineering

摘　　要：介绍了路面机械振动器用壳体铸件的结构及技术要求,针对原顶注浇注工艺铸件存在的夹渣、缩孔缩松缺陷及工艺出品率低、砂铁比高的问题,提出了改进和优化措施:(1)优化设计球墨铸铁壳体铸造工艺,采用中注过滤浇冒口工艺,强化了金属液的过滤效果,浇注平稳,提高了冒口的补缩效率,减小了冒口尺寸,消除了铸件的夹渣及缩孔缩松缺陷,提高了铸件质量和工艺出品率,大大减少了砂铁比,降低了生产成本;(2)制作上壳型、下壳型,形成组合壳型并加装过滤片、保温冒口、直浇道管及排气绳,使得工艺系统集浇注系统、过滤系统、过热补缩系统及排气系统于一体,组合方便,造型操作方便。生产结果表明:通过铸造工艺优化设计生产的壳体铸件,经解剖无缩松、夹渣缺陷且X-ray检测达到一级,材质力学性能及金相组织完全符合客户技术要求。This paper introduces the structure and technical requirements of the shell castings of road machinery vibrators.In response to the problems of slag inclusion,shrinkage and porosity,low process yield,and high sand iron ratio in the original top pouring dispersed pouring process castings,improvement and optimization measures are proposed:⑴Optimizing the design of ductile iron shell casting process,adopting the middle bottom pouring riser process,and the filtering effect of metal liquid is strengthened,pouring is stable,the feeding and shrinkage efficiency of the riser is improved,the size of the riser is reduced,the slag inclusion and shrinkage defects of the casting are eliminated,the quality and process yield of the casting are improved,the sand iron ratio is greatly reduced,and production cost is lower;⑵Producing upper and lower shell shapes,to form a combined shell shape,and install filters,insulation risers,sprue pipes,and exhaust ropes,therefore,this process system integrates the pouring system,filtration system,overheat compensation system,and exhaust system,making it easy to combine and operate.The production results show that the shell castings have no shrinkage or slag inclusion defects,and X-ray inspection reaches level one.The material mechanical properties and metallographic structure fully meet the customer's technical requirements.

关 键 词：球墨铸铁 壳体铸件 铸造工艺 

分 类 号：TG245[金属学及工艺—铸造]