System for applying an isolation layer to a brazed end of a...

Details System for applying an isolation layer to a brazed end of a... System for applying an isolation layer to a brazed end of a...

2008-07-29

2008-07-29

Robinson, Daniel L (Department: 3742)

Electric heating

Inductive heating

Metal working

C228S033000

Reexamination Certificate

active

07405379

ABSTRACT:
A method of forming a brazed joint between an armature bar and a hydraulic header clip including: assembling an end of the armature bar, hydraulic header clip and a substantially phosphorus-free braze material; positioning the assembly of the armature bar, hydraulic header clip and the braze material in a braze chamber, such that the clip is seated in an induction heating coil; heating the assembly to a first temperature within 200 degrees Fahrenheit of and below a solidus temperature of the braze material by applying electrical current to the induction heat coil; heating the assembly to a second temperature above the liquidus temperature of the braze material; pooling liquid braze material on ends of the armature bar, and cooling the assembly and thereby forming a braze layer on the end of the armature bar.

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