Tungsten electrodes have been so popular for TIG
welding and GTAW welding, including cerium doped, lanthanum doped, yttrium
doped, thorium doped, zirconium doped, etc. but besides them, there are many other
welding types and electrodes. These days, we encountered the inquiry of spot
welding electrodes, which is required with type of copper bonded tungsten
electrode. Actually this is a new type, whose history is much shorter than the
TIG welding electrodes.
The requirements of copper bonded type are much
more accurate than rare earth doped.
1.0
The tungsten part is as pure as 99.95%
min.
2.0
The bonding of tungsten and copper is
using special welding, so that the welding layer is without resistance and crack.
3.0
The whole processes of sizes and bonding
are applied cold processing by grounding machine, wire cutting, so that the
properties are remained.
4.0
Higher requirements on the sizes and
tolerances.
Nowadays, the copper bonded type tungsten electrode
is widely used in electronic in car industry, such as Bosch, Denso,
Continental, etc. By using spot welding, or resistance welding, the parts with
thickness over 3mm, or diameters range from 3mm to 12.5mm and be jointed
together.
Copper part in the electrode is applied its high
electric conductivity, which can convey the heat to electrode in high speed. Tungsten
part receives the heat and the materials between the upper and down electrodes
are yielded and squeezed together.
This kind of bonded electrodes have been
many types, the choose of one part is with high electric conductivity, such as
copper, silver, etc. the other part is with low electric conductivity, which is
to make sure the welding electrode is not left on the surface of welding
objectives during welding, the materials can be tungsten, tungsten copper,
molybdenum, etc. And copper bonded type tungsten electrode is the most popular
one in spot welding.
If you have any inquiry of tungsten copper, please
feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595
Fax: +86 592 5129797
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