Abstract: A coating head is provided along a conveyor path, and directs a coating solution toward the objects traveling on the conveyor path below the coating head. The coating head feeds the coating solution in such a manner that it forms a curtain-like stream when it flows onto the objects. A collector receptacle is provided below the coating head for accepting the remainder of the coating solution therein, and a circulating conduit path connects between the collector receptacle and the coating head by way of an intervening circulating pump, for re-using the remainder of the coating solution. The coating solution comprises a brazing alloy powder solution.