characteristics as tungsten , makes it very suitable for TIG welding and other similar electrode material such work . In adding rare earth oxides of tungsten to stimulate its electronic work function , making the tungsten electrode welding performance can be improved : electrode arc better performance, higher stability of the arc column electrode burning rate is smaller. Usual additives earth oxide, cerium oxide , thorium oxide, lanthanum oxide, zirconium oxide and yttrium .

thoriated tungsten electrode : tungsten thorium oxide is added .

Thoriated tungsten electrode has the following advantages : lower electronic features , the higher the crystallization temperature , better conductivity , mechanical cutting properties

Thoriated tungsten electrode is a tungsten electrode material commonly used , it is also superior than that of pure tungsten welding performance , which is widely used in DC welding field . Thoriated tungsten electrode is simple , even when the overload current of the operation can be very good , there are still many companies use of this material , it is seen as a part of high quality welding . Thorium tungsten electrode during use , energy-saving effect is obvious, from the arc current 20-50% relative decline , the welding current is low , the process of using less prone to splashing , very easy to change the first round , the electrode life is longer. In the use of thorium tungsten electrode welding must maintain good ventilation , waste welding head to properly handle .

Thoriated tungsten electrode is a widely used additive oxide electrode , it is other than that of pure tungsten electrode and the oxide electrode is also advantageous to add the comprehensive welding performance in long-term use , it is the other oxide electrode irreplaceable . Thorium tungsten electrode is simple, current load, easy arc starting , stable arc, breaking the arc gap, low loss , long life, higher recrystallization temperature , conductivity better mechanical cutting performance. Thorium tungsten electrode is widely used in steel, stainless steel , nickel alloys and titanium welding, is a high- quality welding material of choice.


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Thorium oxide doped tungsten , producing thorium tungsten electrodes . Specific data as follows :

Grades dopant doping color coating head

WT10 ThO2 0.90 ~ 1.20% yellow
WT20 ThO2 1.8 ~ 2.2% red
WT30 ThO2 2.80 ~ 3.20% Purple
WT40 ThO2 3.80 ~ 4.20% orange

Compared with pure tungsten material , thorium tungsten has the following characteristics :

* Lower * electronic functions in the crystallization temperature higher * Better conductivity * Mechanical cutting performance.

Thorium tungsten electrode is a common use of tungsten electrode material , it is also advantageous than pure tungsten welding performance , which is widely used in DC welding field .

Thoriated tungsten electrode is simple , even when the overload current of the operation can be very good .

Even so , people still gradually turns to other types of tungsten electrodes , such as tungsten and tungsten lanthanum cerium , not only because they are in most applications have shown excellent performance, but it is important that they do not radiate injury. Since thorium tungsten electrodes produce small amounts of radiation thorium oxide , making some welding personnel not go near them.

In the use of thorium tungsten electrode welding must maintain good ventilation , waste welding head to properly handle .


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Made of tungsten and thorium dioxide composed of tungsten alloy , referred to as thorium tungsten . Thorium dioxide content of the alloy used in the 0.7% to 2% . Thorium dioxide thermal stability, greatly enhanced tungsten alloy high temperature strength , the recrystallization temperature and high temperature creep properties , tungsten thorium further reduces the electron work function , and enhance the ability of the alloy thermal electron emission . Preparation of tungsten thorium alloys doped tungsten wire is similar . Thorium tungsten alloy wire as a heat emission of the filament and cathode tubes are widely used in thorium- tungsten alloy rod then as a variety of arc welding , cutting and arc electrode material caused . Tungsten- thorium alloy is an important drawback is that containing a radioactive thorium dioxide , in the processing and use of radioactive contamination.

Radioactive thorium tungsten electrode , its production and use of environmental pollution harm to human health and therefore need to be replaced new electrode products , rare earth tungsten electrode welding performance has been used as an alternative to thoriated tungsten electrodes attention is paid to review research group in rare Earth tungsten electrode course , through to rare earth element tungsten electrodes , binary composite rare earth tungsten electrodes , tungsten electrodes rare earth ternary complex research , the current through the Beijing tungsten & Molybdenum material Factory co- broke multiple composite rare earth tungsten electrodes industrialized production technology, the production of such electrodes .


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Tungsten alloy swaging rod is made of tungsten alloy rod through calcinations. The normal method used in the processing are extruding, forging and sintering. After calcinations, tungsten alloy swaging rod has higher ductility, toughness and tensile strength than tungsten alloy rod, so it can be used for a longer time. Tungsten alloy swaging can be used for MILAN for its high density and high hardness.

MILAN is a European anti-tank guided missile. Design of the MILAN started in 1962. It was ready for trials in 1971, and was accepted for service in 1972. It is a wire guided SACLOS (Semi-Automatic Command to Line-Of-Sight) missile, which means the sight of the launch unit has to be aimed at the target to guide the missile. The MILAN can be equipped with a MIRA thermal sight, or MILIS to give it night-firing ability.

MILAN is a French and German missile that has been license-built by Italy, Spain, Britain and India. As it is guided by wire by an operator, this missile can avoid most countermeasures (flares and chaffs). The drawbacks are its short range, the exposure of the operator, and that it requires a skilled and well-trained operator.

With high density and high hardness of tungsten alloy swaging rod, MILAN can penetrate the armor and destroy tank and other heavily-armored vehicles.


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