Metal fusion bonding – Process – Plural joints
Patent
1988-02-23
1990-02-20
Kamen, Noah P.
Metal fusion bonding
Process
Plural joints
228223, B23K 3102
Patent
active
049019074
ABSTRACT:
A method for production of a heat exchanger is disclosed, where a powder flux is applied in a process of soldering a heat exchanger core of aluminum. An annular groove is formed in a seat plate. Measures are taken for preventing wetting of the annular groove of the seat plate when sprayed with the water on the preassembled core, such that a non-corrosive flux would not adhere to the annular groove of the seat plate. Water is sprayed in the form of a mist on a preassembled heat exchanger core through plurality of spray nozzles. The annular grooves of the seat plates are thoroughly dried after the application of water for attaining a perfect absence of residual non-corrosive flux in the annular grooves of the seat plates. A non-corrosive flux powder is sprayed onto the preassembled heat exchanger core of aluminum with a powder spray gun. The non-corrosive flux is caused to adhere fast to the portion wetted with the water.
REFERENCES:
patent: 4723597 (1988-02-01), Sonoda
Enokido Hiroaki
Hatanaka Takayuki
Kozono Takashi
Kamen Noah P.
Kasper Horst M.
Nihon Radiator Co. Ltd.
Pacific Machinery and Engineering Co. Ltd.
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