The grace of Fortune rare, but great. Julius Caesar
Advantages of tungsten foil
Tungsten foil is a product rental product is an extremely thin sheet of 0.03 — 0.09 mm thick. It is extremely heat-resistant, has a low coefficient of thermal expansion, greater resistance to temperature creep, good thermal conductivity and high coefficient of electron emission. Such foil has a high modulus in tension and compression. She strut to korrozii, the action of alkalis and acids, including concentrated solutions of hydrochloric, sulfuric and nitric acids, Aqua Regia. Strength, chemical stability and biological safety — all this makes tungsten foil suitable for use in a variety of industries.
The main disadvantage of this foil is the production cost. Tungsten is a rare metal, it is quite difficult to separate in pure form, it is heavy, refractory and cranky in the process.
Foil is produced from certified tungsten 99.95% purity for high-precision equipment «cold-hot» method. The quality of the production is controlled at all stages. First rod billet pressed into flat blanks which are heated and then rusk with great speed, while the tungsten is hot. As the hot tungsten is easily oxidized by atmospheric gases, the technologies used for chemical protection, shell rolling planiruyut metals. With the transformation of sheet foil rolling can be continued at normal temperatures. Foil becomes very smooth surface. Surface oxides are removed with hot solution of NaOH or Prokaeva in the atmosphere of H2 at 1000 °C.
|Foil thickness in mm||Limit deviation, mm||Width||Length, not less than|
|0,03||± 0,005||5 — 70 mm||500 mm|
|0,04||± 0,005||5 — 70 mm||500 mm|
|0,05||± 0,005||5 — 70 mm||500 mm|
|0,06||± 0,005||5 — 70 mm||500 mm|
|0,07||± 0,007||5 — 70 mm||500 mm|
|0,08||± 0,007||5 — 70 mm||500 mm|
|0,09||± 0,007||5 — 70 mm||500 mm|
The development of modern instrumentation, robotics, engineering, nuclear energy, medicine and petrochemical industries stimulate demand for foil of refractory metals. Most often tungsten foil is used:
- in the nuclear power industry and military-industrial complex;
- in industrial chemical synthesis;
- the heat exchanger;
- in electronics and radio engineering, electro-vacuum devices.
Buy at best price
In stock, LLC «Electrocentury-steel» always in stock a wide selection of high quality tungsten foil at a price that will satisfy any customer. We offer good conditions for wholesale and retail buyers. If necessary, advise you experienced managers. All products are certified. Quality is guaranteed by strict observance of technological norms of production. Delivery in the shortest possible time. At wholesale orders are provided preferential discount.