半封闭式铸件消失模铸造工艺技术研究与实践  

Technical Research and Practice of Lost Foam Casting Process for Semi-closed Casting

作　　者：高显宏 何阳阳 何玉鸿 杨诚 GAO Xianhong;HE Yangyang;HE Yuhong;YANG Cheng(Yunnan Yun Aluminum Lvyuan Huibang Engineering Technology Co.,Ltd.,Kunming,Yunnan 654300,China)

机构地区：[1]云南云铝绿源慧邦工程技术有限公司,云南昆明654300

出　　处：《云南冶金》2024年第3期135-139,共5页Yunnan Metallurgy

摘　　要：针对大中型半封闭式铸件出现塌箱、涨箱缺陷,分析了缺陷产生的生产环节及其原因并制定相应改进措施。实践证明,半封闭件以上口平面倾斜45°角进行埋箱造型,利于型砂填充震实;制作外接负压管,浇铸时内外负压均开,确保型腔内外负压均衡,提升浇铸合格率。Large and medium-sized semi-closed casting has the defects of sand crushing and expansion tank,it analyzed the production process and causes of defects and the corresponding improvement approaches were established.The practice shows box molding was carried out at a tilting 45°angle of the upper mouth plane of semi-closed casting,molding sand was adopted to fill the compaction;the external negative pressure tube was fabricated,the external and internal negative pressure was open at casting period to guarantee pressure balance of the external and internal chamber,the casting qualified rate was improved.

关 键 词：半封闭式 消失模铸造 外接负压 缺陷 铸件 

分 类 号：TG241[金属学及工艺—铸造]