The heat cured sand of Al-Mg-B compound phosphate inorganic binder was modified by ultrasonicoscillation to binder and adding organic polymer YPPJ while mixing of sand.
The paper analyzes the influence of incidence and oscillation frequency of ultrasonic sensor on measuring accuracy and the choose principle of ultrasonic sensor is presented.
This paper analyzes the influence of incidence and oscillation frequency of ultrasonic sensor on measuring accuracy. The option principle of ultrasonic sensor is presented.