High purity tungsten evaporation boats in hot sale
Tungsten boats information:
1) Purity: more than 99.95%
3) Density: 19.2g/cm3
4) Grade: W-1
5) Tungsten boats type: pressing,folding,weld or as the customers' need
6) With or without drilling holes, according to drawing
7) Surface:rolled, sandblasting&polished
                 Or we can supply as the customers' need.

Tungsten boats size information:
We also supply molybdenum boats,our molybdenum boats size information:
Pure molybdenum boat size information for PVD Vacuum Coating
The processing of pure tungsten boats:
Tungsten boat also known as tungsten evaporation boat, is made from tungsten sheet through a process of cutting, bending, welding and riveting. The material in tungsten boat that is to form the subsequent layer is heated in a vacuum chamber until it evaporates. The vapor formed by the material condenses on the substrate and forms the required layer. Because many coating materials react with water, nitrogen and oxygen, this process is performed in a high vacuum. The high temperatures that are required are generally produced by using resistance heaters or, in some cases, induction heaters, electron beams or arcs. Tungsten boats are manufactured by tungsten to help them withstand these high temperatures as well as the chemical aggressions caused by the coating material.
 
Standard and safe Packing

1)paper wrapped the sheets, then plastic paper protected from moisture
2)Foam board around the the inner wooden case
3)Standard exported plywood case outside

The Advantage of Luoyang HuaPei Tungsten&Molybdenum Material Co.LTD
1) leading producer, more than 15 years producing experience
2) low price in the market,factory direct sales.
3) the whole production line from powder to finished products, top and steady quality assured
4) fast delivery and best after-sale service

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