H - Electricity – 01 – R
Patent
H - Electricity
01
R
26/140
H01R 9/00 (2006.01) B23K 1/00 (2006.01) B23K 35/26 (2006.01) B23P 15/26 (2006.01) F28D 1/03 (2006.01) F28D 1/047 (2006.01) H02G 15/00 (2006.01)
Patent
CA 1171256
ABSTRACT A method for manufacturing a heat-exchanger using a non-eutectic solder which melts within a melting-point range is disclosed. The soldering is carried out in two successive soldering steps, first at a soldering temperature which is at the lower end of the melting-point range and then at a higher soldering temperature within the same range. Flat plates and straight- edge strips are used for the first soldering process. The straight flat-tube produced in this manner is then curved in the desired fashion and soldered in final manner by the second soldering step.
393120
Smart & Biggar
Steeb Dieter C.
LandOfFree
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