A method for making electric contact

A method for manufacturing electric contact, wherein the electric contact is welded with a cooper piece, the brazing face of the electric contact is composed of three supporting face as: an upper supporting face, a left supporting face and a right supporting face, and a diagonal face. The upper edge...

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Bibliographic Details
Main Authors ZHENG SHIKUI, CHEN XIAO
Format Patent
LanguageChinese
English
Published 03.02.2010
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:A method for manufacturing electric contact, wherein the electric contact is welded with a cooper piece, the brazing face of the electric contact is composed of three supporting face as: an upper supporting face, a left supporting face and a right supporting face, and a diagonal face. The upper edge of the diagonal face is the lower edge of the upper supporting face, the minimal distance between the lower edge line of the diagonal face and the supporting faces is approximately 0.04mm-0.06mm. The total area of three supporting faces stand for 5%-25% of the total welding area. The method comprises: processing the electric contact and the cooper piece with anhydrous alcohol, pasting the welding flux on the brazing face of the electric contact and the cooper piece face to be welded, placing the electric contact on the cooper piece to form a diagonal gap, applying electricity and heating the electric contact and the cooper piece between two electrodes of a spot welder; by reaching the brazing temperature of the br
Bibliography:Application Number: CN2008160749