Grace’s Fortune rare, but great. Julius Caesar
Advantages of tungsten foil
Tungsten foil is a final product rolled — extremely thin sheet of 0.03 — 0.09 mm thick. It is extremely heat-resistant and heat-resistant, has a negligible coefficient of thermal expansion, high resistance thermal creep, good thermal conductivity and a high coefficient of electron emission. This foil has a high tensile modulus and compression. It is resistant to korrazii, alkalis and acids, including concentrated hydrochloric, sulfuric and nitric acids, aqua regia. Strength, chemical stability and biological safety — all this makes the tungsten foil suitable for use in a wide variety of industries.
The main disadvantage of this foil is considered to be the cost of production. Tungsten is a rare metal, its quite difficult to isolate in pure form, it is heavy, refractory and cranky during processing.
The foil is made from certified tungsten purity of 99.95% in the high-precision equipment, «cold-hot» method. The quality of production is controlled at all stages. First rod-pressed into slabs which are heated and then unfetters at high speed until the hot tungsten. Since the hot tungsten is readily oxidized by atmospheric gases, used chemical protection technology, shell-rolling clad metal. With the transformation of the sheet in foil rolling can be continued at normal temperatures. Foil becomes a very smooth surface. Surface oxides are removed by hot NaOH solution or calcining in H 2 atmosphere at 1000 ° C.
|Foil Thickness mm||Limit deviation, mm||Width||Length at least|
|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, mechanical engineering, nuclear power, petrochemical and medicine to stimulate demand for foils of refractory metals. The most commonly tungsten foil is used:
- in nuclear power and the MIC;
- industrial chemical synthesis;
- in manufacturing of heat exchangers;
- in electronics and electrical engineering, in electronic devices.
Buy at a bargain price
In stock company «Electrovek-steel» is always in the presence of a wide range of high-quality tungsten foil at a price that will satisfy any customer. We offer good conditions for wholesale and retail buyers. If necessary, you advise experienced managers. All products are certified. Quality guaranteed by strict observance of technological norms of production. Deliveries — as soon as possible. For wholesale orders granted preferential discounts.