Abstract:In order to accurately predict the heating and cooling process of wrought superalloys during the manufacturing process, accurately evaluate thermal stress and control damage, and reduce energy consumption and production costs, it is necessary to perform a systematic study on the surface heat transfer coefficient of various heat transfer conditions of wrought superalloys, and determine a reliable surface heat transfer coefficient for actual process design and simulation calculation. In this paper, 10 typical heat transfer conditions involved in the manufacturing process of GH4169 alloy disc forgings are taken as examples, and the surface heat transfer coefficient of GH4169 alloy is determined by experimental temperature measurement and finite element parameter optimization method. The study found that the surface heat transfer coefficient measured by the direct heating process can comprehensively describe the temperature change of the alloy in different heating processes; the furnace cooling process can be described by the surface heat transfer coefficient measured by the direct heating process; the insulation materials can make the alloy have an extremely low surface heat transfer coefficient and remain stable in a large temperature range; the surface heat transfer coefficient measured by a small laboratory sample can accurately describe the heating and cooling process of industrial large ingots.