Ensuring Quality of Stamping Sheet Aviation Parts

The theory and practice of stamping sheet parts for aircraft are reviewed and analysed. The problem of developing scientific grounds for constructing rational technological processes is noted to provide minimal work intensity and cost of manufacturing aircraft parts with the best quality. Forming operations of sheet stamping and its main advantages are considered. A classifier of research areas in the field of metal sheet stamping is developed. As an analysis of existing research shows, improving the sheet-stamping process still remains relevant; much attention is paid to the influence of temperature, lubricants, and the configuration of stamping equipment on the sheet-stamping process. The drawing quality of samples and the influence of deep drawing on the microstructure and texture of samples are considered. The morphologies of the protective coatings of steel sheets before and after deep drawing are studied. As known, the latent energy of deformation is an important integral characteristic of the substructural state of the metal after plastic deformation and accumulates all common hardening parameters. The influence of latent energy of deformation on the operational properties of parts, as well as on the dimensional stability of parts, is significant that is especially important for thin-walled and precision products. A model for controlling the quality of treatment based on the value of latent energy of deformation is proposed.