Detector of impurities in molten solder

Details Detector of impurities in molten solder Detector of impurities in molten solder

1987-10-06

1989-01-31

Evans, F. L.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

228104, G01N 2188, B23K 100

Patent

active

048012033

ABSTRACT:
A detector is adapted to detect the kinds and concentrations of impurity metals in molten solder or changes in the tin-lead composition of the solder by measuring the dissolution rate of a metallic film. The detector comprises a light-transmissive rod, the bottom cross-sectional area of which is covered by a metallic film. The top cross-sectional area of the rod is connected to an optical measurement means through an optical fiber cable and the time required to dissolve the metallic film in the sample molten solder is measured.

REFERENCES:
patent: 3998591 (1976-12-01), Eckfeldt
patent: 4040749 (1977-08-01), David et al.
patent: 4342919 (1982-08-01), Brogardh
patent: 4409333 (1983-10-01), Tosima et al.
patent: 4491412 (1985-01-01), Haroda et al.
patent: 4492860 (1985-01-01), Brogardh et al.

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