2014年4月29日星期二

Tungsten Ribbon

Tungsten ribbon is shaped like tungsten foil with long length, and bright surface. Ribbon made of tungsten is with high density, high purity and high melting point.

Tungsten, also known as wolfram, is a chemical element with the chemical symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten directly translatable to heavy stone though the name is volfram in Swedish to distinguish it from Scheelite, which in Swedish is alternatively named tungsten.

A hard, rare metal under standard conditions when uncombined, tungsten is found naturally on Earth only in chemical compounds. It was identified as a new element in 1781, and first isolated as a metal in 1783. Its important ores include wolframite and scheelite. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all the elements. Also remarkable is its high density of 19.3 times that of water, comparable to that of uranium and gold, and much higher (about 1.7 times) than that of lead. Tungsten with minor amounts of impurities is often brittle[5] and hard, making it difficult to work. However, very pure tungsten, though still hard, is more ductile, and can be cut with a hard-steel hacksaw.

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2014年4月22日星期二

Surface of Tungsten Wire


Tungsten wire can be purchased according to the surface condition, black or cleaned.
The above picture is to show the surface of tungsten wire is cleaned.

The applications of black or cleaned tungsten wire are for the production of coiled incandescent lamp filaments, cathode and support structures for power tubes, heating elements for high temperature furnaces and evaporation sources in metallizing processes. Thicker sizes of tungsten wire, straightened, finish-ground and cut into rod pieces are widely used for glass-to-metal seal lead parts in the lighting and electronic industries.

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2014年4月21日星期一

Tungsten Granule Order Process


Tungsten granule is made of pure tungsten material with irregular particles. Tungsten granule is also called tungsten flux, tungsten accelerator, and tungsten granulate. The purity of tungsten granule can reach 99.90% or 99.95%min. The color of tungsten granule is metal bright. Tungsten granule is mainly in welding rod, carbon sulfur analysis, weight filler, radiation shielding filler,welding fitting, induction accelerator, etc.
Most Popular Sizes of Tungsten Granule

The most popular size of tungsten granule is -20~+40mesh.

Tungsten Granule Sizes and Method to Order
Commodity Size(mesh) How to Order
Tungsten granule/flux -10~+20 Order
-20~+40
-40~+60


Tungsten Granule Abstract Manufacturing Process
Tungsten granule are made through powder metallurgy, and going through processes of pressing, sintering, swaging, crushing, removing shape edge.

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2014年4月20日星期日

Tungsten Electrodes Order Information

Chinatungsten Online has created a website page for clients to enter tungsten electrodes ordering system easily. The following has showed some part of it and you could also click Order to enter the page. 


The most popular dimensions of tungsten electrodes are
Ø1.6mmx150.0mm
Ø2.4mmx150.0mm
Ø3.2mmx150.0mm
Ø1.6mmx175.0mm
Ø2.4mmx175.0mm
Ø3.2mmx175.0mm

ClassificationGradeContentTip ColorHow to Order
Pure tungsten electrodesWP99.95%min WGreenOrder
Cerium tungsten electrodesWC100.8~1.2%Ce2O3Pink
WC201.8~2.2%Ce2O3Grey
Thorium tungsten electrodesWT100.8~1.2%Th2O3Yellow
WT201.8~2.2%Th2O3Red
Lanthanum tungsten electrodesWL100.8~1.2%La2O3Black
WL151.3~17%La2O3Gold
WL201.8~2.2%La2O3Blue
Zirconium tungsten electrodesWZ30.2~0.4%ZrO2Brown
WZ80.7~0.9%ZrO2White
Yttrium tungsten electrodesWY201.8~2.2%YO2Blue
Composite tungsten electrodesWXXCyan

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