The isolation vacuum-compact ceramics from the oxide of beryllium for electronics

Casting using the pressure of thermoplastic slips is one of the methods for obtaining products with difficult and long-measured form. Instability of technological process and a lot of defects are the result of heat conductivity of the beryllium oxide. The use of ultrasound oscillations at the stages of heating slip, casting, and mould cooling is an optimal method of defect abatement and productivity advancement. The influence of preliminary and accompanying ultrasound processing on the plastic properties, flow nature and hardening of thermoplastic slip has been determined. The technological recommendations on choosing of cohesion amount, casting temperature, power and duration of ultrasound influence which results in obtaining high quality casting have been developed. The density of moulding pieces increases by 5-10%, mechanical strength increases by 40%. The productivity of the casting process of the long measured product increases by 4-10 times