Hand soldering iron with rapidly heated bit - where heater element consists of thin film resistor with positive temp. coefft. of resistance

Hand soldering iron with rapidly heated bit - where heater element consists of thin film resistor with positive temp. coefft. of resistance

The iron consists of a handle, a bit, and a heater element consisting of a film resistor. The resistor is pref. a thin film of metal with a positive temp. coefft. of resistance of min. 3.85 x 10-3/degrees C., and is esp. Pt 0.1-15 mu m thick. The film resistor is pref. located in the handle shank of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ECKERT,KARLHEINZ, EIERMANN,KURT,.DR, DIEHL,WALTER,.DR, DIETSCHMANN,WERNER, KOEHLER,WOLFGANG,DR
Format: Patent
Sprache:eng ; ger
Schlagworte:
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:The iron consists of a handle, a bit, and a heater element consisting of a film resistor. The resistor is pref. a thin film of metal with a positive temp. coefft. of resistance of min. 3.85 x 10-3/degrees C., and is esp. Pt 0.1-15 mu m thick. The film resistor is pref. located in the handle shank of the iron, esp. by brazing the ceramic substrate of the film to a metal shaft made of an alloy with a similar coefft. of thermal expansion to that of the ceramic. The film resistor pref. functions both as a heater element and also as a resistor for controlling the temp. of the bit. The invention provides rapid heat transfer from the film resistor to the solder bit, and the film has a long working life.