Combining soldering with inspection
- 1 October 1988
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Control Systems Magazine
- Vol. 8 (5), 29-32
- https://doi.org/10.1109/37.7740
Abstract
A procedure is described in which an infrared detector is used to control the quality of solder joints being formed on printed circuit boards and a laser is used to inspect the quality of each joint at the same time. This approach eliminates after-the-fact inspection while making available real-time data for process control of the soldering operation. Although the joints are formed one at a time, with somewhat longer manufacturing time compared to alternative processes, the extra time is partly compensated for by elimination of a separate inspection. Moreover, when joints of different sizes occur on the same circuit board, each one receives a tailored amount of reflow energy, thus avoiding underheating or overheating, which can occur when the entire board is soldered at once. Further potential savings arise as a result of the real-time availability of process control data, which make possible rapid correction of process anomalies.Keywords
This publication has 6 references indexed in Scilit:
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