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大型复杂单螺杆压缩机壳体数值模拟与工艺设计
Numerical Simulation and Process Design of Large Complex Single Screw Compressor Housing
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- DOI:
- 作者:
- 李佳丁 王辉 姜淼 汪东红
LI Jiading;WANG Hui;JIANG Miao;WANG Donghong
- 作者单位:
- 嘉善鑫海精密铸件有限公司 浙江工业大学化学工程学院 上海市先进高温材料及其精密成形重点实验室
Jiashan Xinhai Precision Casting Co.,Ltd.,Jiashan 314101,China;College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China;Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming,Shanghai 200240,China
- 关键词:
- 复杂单螺杆压缩机机壳铸件 开天窗铸造工艺 数值模拟 底注式加侧注式
complex single screw compressor housing casing separately casting process numerical simulation bottom and side pouring system
- 摘要:
- 单螺杆压缩机机壳铸件结构复杂,水压测试要求零泄漏,要求铸造工艺设计合理,无缩松缺陷。内腔结构采用开天窗的铸造工艺,单体铸造后再焊接上天窗铸件。根据铸件结构特点,采用底注式加侧注式浇注系统设计,采用ProCAST模拟软件分析了铸件凝固过程中的温度场与疏松缺陷位置,攻克铸造工艺难题。结果表明,铸件力学性能、金相组织指标合格,铸件表面粗糙度小于Ra3.2。
Single screw compressor housing casting structure is complex,water pressure test requires zero leakage,which requires reasonable casting process design,no shrinkage defects in the casting.The housing is cast separately:main body and window parts;then,the widow parts are welded on the main body late.According to the structure characteristics of the casting,bottom and side gating system is adopted.,and the temperature and shrinkage defect position during solidification are analyzed by ProCast simulation software,and the difficult problems of casting process are solved.The results show that the mechanical properties and metallographic structure of the castings are qualified and the surface roughness of the castings is less than Ra3.2.