The electron beam gun is a triode system operated with a small-size tungsten bolt cathode that is indirectly heated by electron bombardment.

The Wehnelt electrode and the anode are shaped as a Rogowski transducer with a bell-shaped through-hole anode. This configuration has been chosen since it greatly reduces the dependence of focal spot size on electron beam current. The electron beam gun is operated at about 10-6 mbar gas pressure which is provided by a vacuum pump system, consisting of a scroll pre-pump and a turbo molecular main pump operated in series. The gas pressure in the beam column and the scanner head is somewhat higher in the range of 10-5 mbar.


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Tungsten alloy military ring is great to know that someone back home is waiting for you–and hey, the money is a little better as well.  Tungsten alloy military ring will hold up to the everyday wear and tear that soldiers put their body’s through.  Hauling gear, weapons, and ammo around can be abrasive on most jewelry–but our line of Tungsten Wedding Rings is made to hold up to just such abuse. Oh and BTW, these rings are very good looking – they make great pieces of everyday jewelry as well as wedding rings, promise rings, engagement rings, and even as purity rings. Tungsten alloy is one of the hardest materials on earth, so you don’t have to worry about bending or scratching like you would on a normal precious metal ring.

Tungsten alloy military ring is the most wear resistant rings on the planet, no more bent or scratched rings like gold and platinum–these rings will last a lifetime.  Tungsten alloy military ring has a permanent polish to them, and do not need to be cleaned with any special jewelry cleaners.



Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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Gold plated tungsten chain capture the essence of fashion is as popular in hip hop today as it was in the 80's and 90's.

Wearing gold symbolizes great wealth and social prestige, while wearing authentic gold jewelry can be expensive. In the past ten years, the price of gold per ounce has more than tripled. So what do you do when you want to wear an iced out yellow gold chain necklace but can’t afford it? You come to tungsten-jewellery.com where we offer the latest gold plated tungsten chain styles at a fraction of the price. Gold plated tungsten chains look identical to the real ones you see on your favorite celebrities and will never go out of style.



Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
Tungsten Video Center: http://v.chinatungsten.com
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Nowadays, tungsten alloy is increasingly used in some field relevant to gold or platinum substitution, such as: tungsten jewelry, e.g. tungsten rings, gold plated tungsten bands, gold plated tungsten rings, ear ring, necklace, wrist chain, etc.Since tungsten alloy bearsa special property of longevity and high durability, when it is utilized to make tungsten alloy rings, it always implicates the love between lovers or couple could be everlasting.

Tungsten rings are a great modern choice for anyone who values high quality jewelry that will last a lifetime. This is because they have fantastic physical properties and a great aesthetic all in one nearly indestructible pattern. Tungsten ring is 7 times harder than stainless steel ring and 4 times harder than titanium rings, tungsten alloy rings'  hardness can match the diamond , it is hard , stunning , adamantine luster and noble.

As well tungsten alloy rings have the high corrosion resistance . By synthetic perspiration testing , it is totally not corrosive, not fade and not change in color, not allergic, not rust.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
Tungsten Video Center: http://v.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com