METHOD OF DETERMINING DENSITY OF HIGH-TEMPERATURE METALLIC MELTS (VERSIONS) Russian patent published in 2012 - IPC G01N9/04 G01N13/02 

FIELD: physics.

SUBSTANCE: in the first version, before loading the sample, a reflector is placed onto a substrate, an emitter of orthogonal optical lines is placed in front of the lens of a photodetector and a semitransparent plate with photosensors, connected to a setup control and signalling unit, is placed between the emitter and a vacuum chamber. Further, the horizontality of the substrate is adjusted, the emitter is switched off, the reflector, the emitter and the semitransparent plate are removed and operation continues. A laser level is also used and the semiconductor plate used is a target for said laser level, including with slits and photosensors. Geared stepper motors are also used and the reflector is in form of a prism. In the second version, a sample is loaded onto the substrate, measuring apparatus is switched on and the image of the silhouette of the ellipsoid-like droplet is obtained on a display using a photodetector and a computer. The substrate is adjusted until the line of the substrate on the display becomes horizontal or the vertical coordinate of one of the edges of the image of the substrate is equal to the vertical coordinate of another, after which subsequent operations are continued.

EFFECT: high objectivity, reliability and accuracy of determining density of high-temperature metallic melts using a large droplet geometry technique.

7 cl, 6 dwg