摘要
以ZL111铝合金为原料,运用挤压铸造工艺制备了汽车涡旋式制冷压缩机中涡旋盘铸件。通过单一变量法,分析了工艺参数对铸件力学性能及显微组织的影响。结果表明,在最佳工艺参数(比压为100 MPa、保压时间为16s、浇注温度为740℃)下,铸件表面及内部无铸造缺陷,微观组织致密,综合力学性能较好。铸件的抗拉强度可以达到370 MPa,伸长率为2.5%,硬度(HB)为128。
ZL111aluminum alloy scroll plate of the automotive refrigeration compressor was produced by squeezing casting.The effects of process parameters on mechanical properties and microstructure of the scroll plate were investigated by the single variable method.The results reveal that the castings have absence of casting defects with dense microstructure and satisfied comprehensive mechanical properties in the optimum process parameters（casting pressure of 100 MPa,holding time of 16 s,pouring temperature of 740 ℃）.The tensile strength,elongation and hardness of aluminum alloy scroll plate specimen can reach 370 MPa,2.5% and 128 HB,respectively.
作者
刘剑峰
尹延国
段聪翀
许明
程玉凡
Liu Jianfeng Yin Yanguo Duan Congchong Xu Ming Cheng Yufan(Institute of Tribology, Hefei University of Technology Hefei Yihui Light Alloy Technology Co. , Ltd.)
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2017年第9期979-982,共4页
Special Casting & Nonferrous Alloys
关键词
铝合金
涡旋盘
挤压铸造
力学性能
显微组织
Aluminum Alloy
Scroll Plate
Squeezing Casting
Mechanical Properties
Microstructure
