Procedure for soldering the constituent layers of a...

Details Procedure for soldering the constituent layers of a... Procedure for soldering the constituent layers of a...

2006-03-07

2006-03-07

Robinson, Daniel (Department: 3742)

Electric heating

Inductive heating

Metal working

Reexamination Certificate

active

07009157

ABSTRACT:
Procedure for soldering the constituent layers of a multilayer printed circuit and machine for performing it.The procedure is applicable to circuits made up of layers containing the circuit image (2, 3, 4, 5,) that have perimetral strips (9) including reserve areas (11), superimposed and separated from each other by isolating layers (6, 7and8). The procedure includes the following steps: i) place a heater circuit (13) composed of a flat winding with at least one turn in short-circuit (14) in each reserve area (11); ii) superimpose the layers that contain the circuit image (2, 3, 4, 5,) and the isolating layers (6, 7and8) in alternating order; iii) secure the position of the layers relative to the others, thereby creating groups (12) of reserve areas (11); iv) place induction electrodes (18) over the groups (12) of reserve areas; v) soldering each one of the groups (12) by application of a magnetic field of variable induction.

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