Method and arrangement for a martensite-free brazing process

Details Method and arrangement for a martensite-free brazing process Method and arrangement for a martensite-free brazing process

2005-05-31

2005-05-31

Johnson, Jonathan (Department: 1725)

Metal fusion bonding

With control means responsive to sensed condition

Work-responsive

C219S129000, C219S130330

Reexamination Certificate

active

06899261

ABSTRACT:
An apparatus for brazing a connecting piece of electrically conducting material such as metal, to a metal surface by means of a new type of temperature-controlled brazing whereby for certain types of material a brazing is obtained that is free of martensite formation underneath the brazed joint in, for example, railway track and/or pipework. The apparatus has an electrode and processing circuitry by which a voltage applied in electrical circuit with the electrode causes an electric arc to be struck between the electrode and an adjacent workpiece to generate the heat necessary for brazing.

REFERENCES:
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patent: 3032637 (1962-05-01), Wasserlein
patent: 3035155 (1962-05-01), Hawk
patent: 3911246 (1975-10-01), Drinkard, Jr.
patent: 4081656 (1978-03-01), Brown
patent: 4493986 (1985-01-01), Carter et al.
patent: 4528437 (1985-07-01), Burnett et al.
patent: 5313045 (1994-05-01), Baavhammar

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