Abstract: Articles to be brazed are preheated to an increased temperature in a preheating process and the temperature of the articles to be brazed is measured. Conversion data obtained and stored for different combinations of articles to be brazed is referred to on the basis of the measured temperature and a time for which brazing filler metal supply nozzles are kept in a wait state is set on the basis of the conversion data to define the timing for supplying the brazing filler metal wires (S40). A heating burner moves forward and then a timer starts counting the time for which the nozzles are kept in the wait state (S42). When the nozzle wait timer has counted the set time and expired, the brazing filler metal supply nozzles move forward and supply the wires to braze the articles (S43 to 45). In this way, the articles to be brazed, heated by the heating burner, are at an increased temperature suitable for brazing at the time when the brazing filler metal wires are supplied.

Abstract: A flux supply device comprises a liquid replenishing portion containing a liquid flux for replenishment, a liquid holding portion connected to the lower end of the liquid replenishing portion with a first electromagnetic valve provided therebetween, and a liquid supply portion connected to the lower end of the liquid holding portion with a second electromagnetic valve provided therebetween. The lower end of the liquid supply portion is located in a flux storage tank in which a mixed gas is generated. A gas blow-in pipe for supplying a combustible gas is also located in the flux storage tank. The first electromagnetic valve and the second electromagnetic valve are controlled in given timing so that one opens and closes and then the other opens and closes, alternately and repeatedly. This prevents the pressure variation in the flux storage tank from affecting the liquid replenishing portion and the surface level of the liquid flux in the flux storage tank is kept unchanged.

Abstract: Articles to be brazed are preheated to an increased temperature in a preheating process and the temperature of the articles to be brazed is measured. Conversion data obtained and stored for different combinations of articles to be brazed is referred to on the basis of the measured temperature and a time for which brazing filler metal supply nozzles are kept in a wait state is set on the basis of the conversion data to define the timing for supplying the brazing filler metal wires (S40). A heating burner moves forward and then a timer starts counting the time for which the nozzles are kept in the wait state (S42). When the nozzle wait timer has counted the set time and expired, the brazing filler metal supply nozzles move forward and supply the wires to braze the articles (S43 to 45). In this way, the articles to be brazed, heated by the heating burner, are at an increased temperature suitable for brazing at the time when the brazing filler metal wires are supplied.

Abstract: A flux supply device comprises a liquid replenishing portion containing a liquid flux for replenishment, a liquid holding portion connected to the lower end of the liquid replenishing portion with a first electromagnetic valve provided therebetween, and a liquid supply portion connected to the lower end of the liquid holding portion with a second electromagnetic valve provided therebetween. The lower end of the liquid supply portion is located in a flux storage tank in which a mixed gas is generated. A gas blow-in pipe for supplying a combustible gas is also located in the flux storage tank. The first electromagnetic valve and the second electromagnetic valve are controlled in given timing so that one opens and closes and then the other opens and closes, alternately and repeatedly. This prevents the pressure variation in the flux storage tank from affecting the liquid replenishing portion and the surface level of the liquid flux in the flux storage tank is kept unchanged.

Abstract: Position detecting device for use with omega navigating apparatus which includes a receiver for receiving two omega signals from different stations, a synchronous generator for producing first and second signals synchronized with the omega signals and frequency dividing the synchronized signals by a common divisor to produce first and second frequency-divided waves, frequency dividing means for dividing the phase difference between the frequency-divided waves by the period of the omega signals to produce an integral quotient which constitutes a lane number while the remainder represents the phase difference between the first and second omega signals.