Casting Process Design for Lifting Eye of Key Components in Deepwater Oil and Gas Fields
As the key components of deepwater oil and gas fields,lifting eyes bear alternating loads.The ear position of the lifting eye needs to be dissected,and the mechanical properties of its central part must meet the standards.This puts high requirements on the internal quality of castings,which brings great difficulties for casting process design and subsequent production.A casting process analysis was conducted on the lifting eye structure,the process design of molding and core making,parting,sand core,riser and cold iron,pouring system,slag collection tank and vent hole,reverse deformation amount,etc.are introduced.The proposed plan is practical and feasible.After production verification,the quality and mechanical properties of the lifting eye castings meet the customer's requirements,hence providing reference for the casting process design of domestically produced lifting eyes.