Round Head Sand Core for Binaural Tube Joint
Author of the article:WANG Aiming
Author's Workplace：China Railway Construction and Electrification Bureau Group Rail Transit Equipment Co.,Ltd.,Changzhou 213719,China
Key Words：catenary binaural tube connector body sand core casting process
Abstract：
The round head sand core of the binaural joint body was prone to instability under the erosion of molten metal,and the casting blank cannot meet the established technical indicators,which affects the installation accuracy of the binaural joint body.The binaural tube joint round head sand core head and mold core seat process had been designed and optimized,and the size and pressure bearing area of the core head had been determined.The results show that after the core head and core seat process is improved,the sand core resists strength is enhanced,instability is eliminated,and the material utilization rate reaches more than 95%.
