Non-contact detection of liquefaction in meltable materials

Details Non-contact detection of liquefaction in meltable materials Non-contact detection of liquefaction in meltable materials

1984-06-11

1987-04-14

Godici, Nicholas P.

Metal fusion bonding

Process

With measuring, testing, indicating, inspecting, or...

228 9, 2281802, B23K 3100

Patent

active

046571698

ABSTRACT:
The melting of solder in a reflow soldering operation is detected by examining the rate of change of the solder temperature or by detecting a change in a surface reflectance characteristic of the solder which occurs upon melting.

REFERENCES:
patent: 3409198 (1968-11-01), Peterman
patent: 4224744 (1980-09-01), Siegel et al.
patent: 4327265 (1982-04-01), Edinger et al.
patent: 4354629 (1982-10-01), Grassauer

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