1.The parameter of the tungsten needle
Material: cerium tungsten
welding core diameter : 1.6/2.0/2.4/3.0/3.2/4.0 (mm)
Type: tungsten cerium electrode
The nature of the drug skin: tungsten
Welding current : 200 (A)
Length : 175 (mm)
Packaging: plastic box
Quantity: 10 / box
1 Box Tungsten Needles（You can choose the diameter you need）
TIPS: 1 Box=10 Pcs Tungsten Needles
TIPS:In the Commodity attributes "1.6" means the Diameter is 1.6MM
2pcs 1.6*175MM WC20 Tungsten Needles
2pcs 2.0*175MM WC20 Tungsten Needles
2pcs 2.4*175MM WC20 Tungsten Needles
2pcs 3.0*175MM WC20 Tungsten Needles
2pcs 3.2*175MM WC20 Tungsten Needles
The scope of application for the pipes and welding of small parts of the pull, intermittent welding and a specific number of welding
1.pure tungsten is the longest history of use of a non-melting electrode. Tungsten's high melting point of about 3390-3430 degrees Celsius, the boiling point of about 5900 degrees Celsius. But there are some drawbacks: First, the electron emission less able to require that power high-load voltage; anti-burning, short service life, the need for frequent replacement of the extreme head of the re-grinding of tungsten. Is mainly used in AC welding of aluminum, magnesium and its alloys, its broken oxide film and good.
2.The thorium tungsten in the tungsten in a certain amount of thorium oxide (ThO2) after the thorium tungsten. Electron emission capability, the desired arc voltage is low, easy and stable arc, greatly extend the life of the tungsten. But a trace of radioactive thoria (THO2).
3.cerium tungsten in the tungsten in less than 2% of the oxidation of cerium (CeO), made of cerium tungsten. Its main features are: radioactive allowable current increases, the hot electron emission ability, stable arc, the heat concentrated, long life, the shape of the ends is easy to keep.
The size of the tungsten needle commonly used specifications are:
3.2X150 3.2X175 units MM
2.More detail about the tungsten
Tungsten needle main purposes: for the production of high-intensity gas discharge lamp arc tubes electrode.
Due to the nature of the tungsten, making it very suitable electrode materials for tiG welding and other similar kind of work. To stimulate the electron work function by adding rare earth oxides in the metal tungsten, tungsten electrode welding performance can be improved: the electrode from the arc better performance, higher stability of the arc column, electrode burning loss rate is smaller. Usually rare earth additives of cerium oxide, lanthanum oxide, zirconium oxide, yttrium oxide, thorium oxide.
Tungsten needle in the gas tungsten arc welding arc, arc starting, arc stability and weld quality play an important role. Loss of quality of the tungsten electrode in the arc under high temperature, known as the tungsten electrode ablation. In order to facilitate discussion of the tungsten electrode ablation mechanism and ablation can be divided into add the ablation of the oxide and tungsten ablation.
Welding Tips: cerium tungsten and thoriated tungsten welding DC welding (color gray head and a red head), suitable for welding AC welding (welded aluminum), is a pure tungsten (green head).
The picture of te tungsten needle:
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