Authors : M.A. Vasechkin, S.V. Shakhov, I.N. Maslov and S.V. Egorov
Abstract: Installation for calibration by the mode “squeezing-expanding” of thin-walled precision pipes from deformable titanium alloys and corrosion-resistant steels with outside diameter from 40-160 mm and wall thickness from 0.5-1.5 mm was designed, made and experimentally tested. The developed installation represents the compact hydraulic machine with working equipment and the necessary quick-detachable tool, namely the multisector punches and matrixes, completed for each specified standard size. Calibration by multisector punches and matrixes allows avoiding the faceing in places of tool connector. At the calibrated tubular details the deflection of outside diameter under the subsequent automatic welding of annular joints doesn’t exceed ±0.15 mm from the nominal size. Emergence of objectionable symptoms in the form of ovality and lengthwise loss of stability is excluded and it is provided increase of productivity and noiselessness of research.
M.A. Vasechkin, S.V. Shakhov, I.N. Maslov and S.V. Egorov, 2015. Installation for Calibration of Thin-Walled Precision Pipes. Journal of Engineering and Applied Sciences, 10: 208-213.