Vibro-molding of refractory compounds

Vibration pressing of shaped refractory products

“…A previous report [2] dealt with work on vibropressing of ladle parts of relatively simple shape.In this article we shall give the results of investigations of vibropressingof shaped refractory products made from semidry pastes of various degree of plasticity.In our investigation we used chamotte paste made at the Borovichi Refractories Combine and the Chasov-Yar Combine of Refractory Products, ready-mixed Dinas mixture made at the Krasnogorovka Refractories Works, and also a graphite--chamotte mixture made at the VIO.The graphite--chamotte and Chasov-Yar chamotte pastes were made in a blade-type mixer, which was also used to process the Dinas paste to break up lumps formed during transportation.The Borovichi chamotte paste was made in SM-21A edge runner mills.The specimens were pressed and their characteristics determined by a previously developed method [2]. With this aim, at the All-Union Institute of Refractories (VIO) we have developed a method of vibropressing with a powerful dynamic action in a hydroinertial vibropercussive press [i].…”

“…The specimens were pressed and their characteristics determined by a previously developed method [2]. The power parameters of the process were registered with the aid of tensometers and an N-105 oscillograph.…”