Patent ID: 9739664
Date: 2017-08-22
CPC Classifications: G01J

Claim:
1. A non-destructive method of measuring temperature of a part heated during a heating process, the method comprising: applying a temporary, non-reactive coating to an outer surface of the part at a first temperature, the coating being at least partially opaque and having a known emissivity of infrared light, the coating being a thermal conductor having limited thermal insulating properties, the coating being a mineral powder coating which includes grains having a plurality of facets; heating the part, and thereby the coating thereon, to a second temperature greater than the first temperature, the coating conducting thermal energy from the underlying part; measuring a temperature distribution of the part by measuring infrared light emitted from the heated coating using a thermal imaging device calibrated to the known emissivity of the coating; and removing the temporary, non-reactive coating from the part after determining the temperature distribution of the part.