Flux supply device and flux supply method

摘要

A flux supply device comprises a liquid replenishing portion 49 containing a liquid flux 15 for replenishment, a liquid holding portion 50 connected to the lower end of the liquid replenishing portion 49 with a first electromagnetic valve 33 provided therebetween, and a liquid supply portion 51 connected to the lower end of the liquid holding portion 50 with a second electromagnetic valve 34 provided therebetween. The lower end of the liquid supply portion 51 is located in a flux storage tank 11 in which a mixed gas is generated. A gas blow-in pipe 18 for supplying a combustible gas is also located in the flux storage tank 11. The first electromagnetic valve 33 and the second electromagnetic valve 34 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 11 from affecting the liquid replenishing portion 49 and the surface level of the liquid flux 15 in the flux storage tank 11 is kept unchanged. <IMAGE>