| 摘要 |
PCT No. PCT/EP84/00341 Sec. 371 Date Jun. 28, 1985 Sec. 102(e) Date Jun. 28, 1985 PCT Filed Oct. 29, 1984 PCT Pub. No. WO85/01963 PCT Pub. Date May 9, 1985.A treatment tank (14) for the tinning of printed-circuit boards with a continuous interior chamber (22) has a bottom tank portion (16) joined to a wider upper tank portion (20) by sloping wall sections (18). The heatable bottom tank portion (16) is filled with molten solder (24) over whose surface in the upper tank portion (20) a highly heatable thermofor oil heated approximately at the temperature of the molten solder is poured. Under the surface of the thermofor oil, in the upper tank portion there are disposed two spaced apart jet-nozzle tubes (32) with nozzles (34) aimed toward one another and inclined slightly downwardly from which thermofor oil delivered by a pump (38) can be squirted onto a printed-circuit board (12) drawn upwardly between the jet-nozzle tubes (32) after immersion into the molten solder. |
