The trajectory of tungsten copper sealing weld electrode is seam-like, so it also known as seam welding electrode or parallel sealing weld electrode, which is one kind of resistance welding electrode.
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The sealing process is generally used for soldering packaged devices, optical devices, sensor devices, and MEMS devices that require high sealing. It is generally carried out under a nitrogen or vacuum atmosphere, and the tungsten copper sealing weld can ensure airtightness better.