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.
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)
出处
《云南冶金》
2024年第3期135-139,共5页
Yunnan Metallurgy
关键词
半封闭式
消失模铸造
外接负压
缺陷
铸件
semi-closed
lost foam casting
the external negative pressure
defect
casting
