Research on the Casting Process of a ZL114A High Strength Aluminum Alloy Thin Wall Conical Shell Casting
A thin-walled conical shell casting is an important component of the front end device of an aircraft.It is a ZL114A high-strength aluminum alloy casting.Due to the semi closed structure of the product,internal quality problems are prone to occur during casting.In order to ensure that the various indicators of the product meet the requirements,counter-pressure casting combined with computer simulation analysis was used to conduct casting process research on the casting.During the research process,it was found that the triangular area of the conical top was prone to shrinkage defects during solidification.By combining simulation,the improvements were made to the casting solidification forming process,such as adjusting the gating system and adding chills,eliminating the tendency of shrinkage porosity.Production trial production was completed,and the internal quality of the casting met the requirements of Class I parts.The average tensile strength,yield strength,and elongation of the attached cast test bars were 364.67 MPa,306 MPa,and 7.5%,respectively,meeting the requirements of various technical indicators.
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