Study on production technology of zirconium oxygen-free copper cake material on inner wall of rocket engine
In this paper,the production process of zirconium oxygen-free copper cake on the inner wall of rocket engine is developed from the Angle of industrial production.The flaw detection performance of the cake billet was improved and the proportion of the flaw waste was greatly reduced by the control of the high diameter ratio of the forging billet through multiple reversing upsetting and forging.Secondly,the optimum annealing and heat treatment system matching the production process was found by comparing the microstructure of different heat treatment processes.Finally,a relatively fine and uniform annealed cake structure was obtained,and the properties of the finished cake were effectively improved.The tensile strength was controlled between 240Mpa and 245MPa,and the minimum elongation after breaking was increased from more than 40%to more than 50%.At the same time,the dispersion of the post-fracture elongation index of the cake material has been greatly improved,and is controlled within 5%,which effectively avoids the defects such as folds and cracks generated during the spinning process of the cake material after delivery,and reduces the risk of subsequent use of the cake material products.
inner wall of enginezirconium oxygen-free coppercakeheat treatmentmicrostructure
国家科技期刊平台
NSTL
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