The article describes the development of mathematical models and user environment in the APD language which are based on the finite element system solver and allow for the SLM physical process numeric modelling with the required accuracy. The main task is to evaluate the final shrinkage and residual strength of the blanks of gas turbine parts for optimizing the technological process of production. The activities on introducing pre-distortions into the part geometry were performed to compensate for thermal deformation during the growth process; the part with pre-distortion was produced and controlled.
The paper studies the matters of numeric simulation of the processes of casting, crystallizing and cooling down to room temperature, and addresses the related problem of the stress-strain state of the casting process in manufacturing the cast parts of a gas turbine engine. The influence of the technological parameters of casting onto the development of the deformation defects was evaluated. The works were performed on incorporating predeformation into the burn-out model for compensating temperature deformations during casting, and on production and control of the above casting with predeformation.
The article covers researching the processes of pouring, crystallizing and cooling to room temperature, while simultaneously solving the related task of the stress-strain behaviour of the casting process in course of the heat-protective panels manufacture. The influence of the technological parameters of casting onto the development of the deformation defects was evaluated. The works were performed on incorporating predeformation into the burn-out model for compensating temperature deformations during casting, and on production and control of the above casting with predeformation.
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