钍钨电极是传统电极，有着优越的焊接性能，在焊接过程中不断弧、 不散弧、不飘逸、不飞溅、电弧稳定、耐高温，钨极头不易变圆，使用寿命较长。但钍钨电极轻微的放射性，使得它的应用受到了一定的限制和抵制。
The thorium electrode is a tradeitional outstanding welding electrode, whose arc is continuous, stable, without spreading and dispersing. As it is not easy to get a round top with thermostability, it performs well in lifetime. However, it is limited in application for its slight radioactivity.
牌号、成份、色标、逸出功
Tradeitional Markers，Compositions，Color Sign And Discharged Power
|
牌号 |
掺杂质 |
掺杂量% |
其它杂质量% |
钨% |
电子逸出功 |
色标 |
|
||
|
Trade mark |
Added |
Impurity |
Other |
Tungsten |
Electric |
Color |
|
||
|
impurity |
% |
Impurities% |
% |
discharged |
|
sign |
|
||
|
|
|
|
|
|
power |
|
|
|
|
|
WT10 |
ThO2 |
0.9~1.2 |
＜0.20 |
余量 |
2.0-3.9 |
|
|
|
|
|
|
|
|
|
||||||
|
The rest |
黄yellow |
|
|||||||
|
WT20 |
ThO2 |
1.8-2.2 |
＜0.20 |
余量 |
2.0-3.9 |
|
|
|
|
|
|
|
|
|
||||||
|
The rest |
|
红red |
|
||||||
|
|
|
|
|
|
|||||
|
WT30 |
ThO2 |
2.8-3.2 |
＜0.20 |
余量 |
2.0-3.9 |
|
|
|
|
|
|
|
|
|
||||||
|
The rest |
|
紫Blue |
|
||||||
|
|
|
|
|
|
|
||||
|
WT40 |
ThO2 |
3.8-4.2 |
＜0.20 |
余量 |
2.0-3.9 |
|
|
|
|
|
|
|
|
|
||||||
|
The rest |
桔黄色org |
|
|||||||
