Cerium oxide is added tungsten, cerium tungsten electrodes produced. Specific data is as follows:

Other grades dopant doping doping electron work function color coating head
WC 0 ceria 2 1.80 ~ 2.20% <0.20% 2.7 ~ 2.8 gray

Cerium tungsten thorium tungsten material than has the following advantages:

* Non radiative * Low melting rate * Long life * Good welding arc resistance. Therefore, cerium tungsten is a low current welding environment thorium tungsten best substitute.
Cerium tungsten electrodes are used in low current DC welding.

Cerium tungsten at low current with excellent arc performance, thus becoming mostly rail pipe welding equipment manufacturer's standard, in addition, it is also used for other low-current applications such as precision small parts welding.

Cerium tungsten is not suitable for applications under high current conditions, because in this condition, the oxide will be quickly moved to the heat zone, the tip of the welding electrode, so that the uniformity of the oxide damage, which due to oxidation uniform distribution of matter brought these benefits will cease to exist.


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Cerium Tungsten Electrode Characteristics

Cerium tungsten electrodes in the early 1980s, introduced to the United States , as a non- radioactive tungsten electrodes to replace thoriated tungsten . Cerium tungsten electrodes which usually contains 2% cerium oxide. Known cerium tungsten electrodes at a low voltage , for DC welding , because the low voltage arc easily in the job to be lower than 10% thoriated tungsten . For pipe welding , cerium tungsten electrodes are the most popular , also commonly used to weld small parts. And compared to pure tungsten electrodes , cerium tungsten electrodes have a lower rate of combustion or evaporation rate . With increasing the content of cerium oxide , these advantages are increased. Ce has the highest mobility , and thus the time at the beginning of welding , the welding performance is very good . Over time , the grain growth , the migration rate will be significantly reduced. However, at low voltages , a longer life than the thoriated tungsten electrode . Because of these characteristics, tend to favor short-cycle welding or soldering specific amount before you replace the electrode . High current, voltage tungsten electrode welding is best to use thorium or lanthanum tungsten electrode . Cerium tungsten electrodes (EWCe-2) successfully used for DC or AC on , but mainly for DC welding, because the AC welding, easy to split .

Cerium tungsten electrodes packaging requirements : 10 / plastic box , the length is 150mm or 175mm, 1000只per carton .


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Cerium Tungsten Electrodes Advantages

Cerium tungsten electrode has the advantage of no radiation, melting rate, long life. Cerium tungsten electrodes at low current welding under the best products but also for other low currents as small and complex parts of the welding. Cerium tungsten electrodes having a tungsten electrode performance and environmental value of this, cerium tungsten electrode tip color is gray.

Cerium tungsten electrode and thoriated tungsten electrode has the following advantages: a slight thorium tungsten radiation, they are to a high current condition in order to run. However, cerium tungsten electrodes are non-radiation welding materials, and can be run at low current.

Cerium tungsten electrodes can replace thoriated tungsten electrodes. Another cerium tungsten electrodes chemical properties, and their cathode spot is small, the pressure drop, no burning, so the arc welding is the most widely used.

The Use of Cerium Tungsten Electrodes

For DC or AC welding, especially in the small current pipeline on rail, small precision parts welded best results. Mainly used in steel, stainless steel, silicon brass, copper, bronze, titanium and other materials, welding, but there is a slight radioactive contamination.


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Lanthanum tungsten electrodes is already the internationally popular electrode materials, especially the content is 1.5% ( with a content of 2.0% difference) lanthanum tungsten electrode . Scientific research study showed that 1.5% lanthanum tungsten, tungsten thorium with the nearest 2.0% demonstrated conductive properties, therefore , welding personnel can easily replace the electrode , rather than replace the device parameters. In 1998 there is a very famous field trials , is to 2.0% thoriated tungsten electrodes , 2.0% cerium tungsten electrodes and two vendors 1.5% lanthanum tungsten electrodes at 70 Ann 150 amps , 300 volts DC environment for welding tasks , the fruit is , in both cases , 1.5% lanthanum tungsten electrodes have demonstrated its excellent welding performance , but also reflects its small burn rate characteristics. Lanthanum tungsten electrode is also suitable for AC welding tasks , and performance excellence.

Lanthanum tungsten electrode welding because of its good performance in the international welding industry concern. Lanthanum tungsten electrode conductivity closest WT20 thorium tungsten electrode . Therefore , welders welding operation without changing any program can use this convenient alternative thorium tungsten electrode electrode . This shift , whether in exchange conditions or under DC conditions are easier. Another advantage of lanthanum tungsten electrode performance at its current high durability and burning the minimum rate .


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