OXYGEN CONCENTRATION ANALYSIS METHOD FOR SOLDERING DEVICE IN SOLDERING N2 ATMOSPHERE

摘要

PURPOSE: To use a zirconia type oxygen densitometer normally unusable for measuring the oxygen concentration of gas in soldering atmosphere, and undertake the proper control of the oxygen concentration in the soldering atmosphere for restraining the occurrence of a solder defect. ;CONSTITUTION: Atmosphere gas is sampled from a soldering furnace 1 and a resin component is removed therefrom via a filter 2. Then, an alcohol component is removed from the gas through a filter 4 and subsequently moisture is removed via a mist separator 5. The oxygen concentration of the gas so produced is measured with a zirconia type oxygen densitometer 6.;COPYRIGHT: (C)1995,JPO