MEASURING METHOD FOR DENSITY OF FACING SAND OF SELF-HARDENING MOLD

MEASURING METHOD FOR DENSITY OF FACING SAND OF SELF-HARDENING MOLD

PURPOSE:To detect the density of facing sand simply and in a non-destructive manner by measuring a time between the transmission and reception by a transmitter and a receiver provided on the facing sand at an interval. CONSTITUTION:The transmitter 6 and the receiver 7 are pressed at an interval set...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: IWASAKI YASUHIRO, KUSAKA OSAMU
Format: Patent
Sprache:eng
Schlagworte:
CASTING
FOUNDRY MOULDING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PERFORMING OPERATIONS
PHYSICS
POWDER METALLURGY
TESTING
TRANSPORTING
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Beschreibung
Zusammenfassung:PURPOSE:To detect the density of facing sand simply and in a non-destructive manner by measuring a time between the transmission and reception by a transmitter and a receiver provided on the facing sand at an interval. CONSTITUTION:The transmitter 6 and the receiver 7 are pressed at an interval set beforehand on the surface of the facing sand of the mold after being hardened. And, an elastic compression wave such as an ultrasonic wave is transmitted from the transmitter 6 and received by the receiver 7. Operations of the velocity of propagation of the compression wave, etc. being conducted by a measurer 8, the relative density with a standard sample is detected directly.