The Testing of Brass Solderability for Hybrid Sewing Thread

Abstract

This paper presents a research focused on testing of brass solderability for hybrid sewing thread. The hybrid sewing thread is composed of two strands each containing 48 polyester (PES)fibers and 4 brass micro wires. As main investigative method was chosen spread test. Due to composition of hybrid sewing thread, was used brass plate as testing substrate. Two different solder alloys (SAC and SnPb)and two different fluxes (SMNA and Actiec 5)were placed on the testing substrate. The solder balls were remelted by using vapor phase soldering. The contact angle of reflowed solder ball was calculated from surface and height of remelted ball.