Optimization of Soldering Process by Characteristic of Current and Voltage

Abstract

Soldering is used to form electrlcal joints in many situations in manufacturing processes. To qualify work personnel for hand soldering, 100-percent sensory tests have been used. To eliminate sensory testing, a changeover was made to functional evaluation of the hand soldering process by measuremet of the current-voltage characteristic, and process conditions were quantitatively defined. Measurement errors were also reduced by using JIS Z 9090 to quantify measurement error, and a measurement technique for evaluation of hand soldering was established. At the same time, parameter design was performed and hand soldering process conditions stable with respect to noise factors were established.