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Tungsten sheet
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feature
Advantages of tungsten sheet is hard to overestimate. Due to the high operational parameters, it holds a leading position among heat-resistant alloys. Sheet tungsten is an indispensable construction material with exceptional thermal stability and resistance to corrosion. Without such material it is impossible to imagine a modern industry. Tungsten sheet is capable of long time to work effectively at a temperature above 2500 degree. It has minimal coefficient of thermal expansion, high electrical resistance, high modulus of tension and compression, exceptional resistance to thermal creep. It is inert in an oxygen atmosphere to 400 °C, hydrogen to 600 °C, ammonia to 700 °C, carbon monoxide to 800 °C, in concentrated solutions of acids, alkalis, Aqua Regia, boiling mercury. It is designed for operation in aggressive liquid and gaseous environments in conditions of extreme loads at very high temperatures.
| type | Process | Delivery condition | Size, mm | ||
|---|---|---|---|---|---|
| Thickness | Width | Length | |||
| WA SVI | P/M | Cold-Rolled (Y) Annealing for stress relieving, (m) |
0.10−0.20 | 30−250 | 50−500 |
| > 0.20−0.4 | 50−250 | 50−500 | |||
HR ® Annealing for stress relieving, (m) |
> 0.40−4.0 | 50−200 | 50−200 | ||
| > 4.0−6.0 | 50−200 | 50−200 | |||
production
Under normal conditions, technological plasticity of tungsten is insufficient, but with increasing temperature — increased without loss of strength. For sheet production is certified 99.95% purity tungsten. Used «hot-cold» method rolled on precision equipment using technology of chemical protection. First using powder metallurgy to form the workpiece — the so-called Fort. A rod billet is pressed in the initial flat blank and rolled at high temperature with maximum speed. For protection against oxidation, apply a shell rolling or plating metals. Further rolling the sheet up can continue at a normal temperature. The sheet has a smooth surface with which the end of the treatment oxides are removed with hot NaOH solution, or by annealing in hydrogen atmosphere at 1000 °C.
application
Tungsten sheet is widely used in various industries, from petrochemicals to nuclear power. Unique performance enables you to apply it for the production of heat shields, parts of burners, heat exchangers. High wear resistance and heat resistance of foil resistance to the action of aggressive environment, allows it to apply where the operation of equipment associated with contact with hot aggressive environments in a wide temperature range.
| Thickness | Thickness tolerance | Width tolerance | Length tolerance | |
|---|---|---|---|---|
| Grade I | Grade II | |||
| 0.10−0.20 | ±0.02 | ±0.03 | ±3 | ±3 |
| > 0.20−0.30 | ±0.03 | ±0.04 | ±3 | ±3 |
| >0.30−0.40 | ±0.04 | ±0.05 | ±3 | ±3 |
| >0.40−0.60 | ±0.05 | ±0.07 | ±4 | ±4 |
| >0.60−0.80 | ±0.07 | ±0.08 | ±4 | ±4 |
| >0.80−1.0 | ±0.08 | ±0.12 | ±4 | ±4 |
| >1.0−2.0 | ±0.12 | ±0.20 | ±5 | ±5 |
| >2.0−3.0 | ±0.20 | ±0.30 | ±5 | ±5 |
| >3.0−4.0 | ±0.30 | ±0.40 | ±5 | ±5 |
| >4.0−6.0 | ±0.40 | ±0.50 | ±5 | ±5 |
BUY AT best PRICE
Quality manufacturer with constant control over the observance of technological discipline and compliance of tungsten sheet all parameters of the normative documentation and acceptable cost of products determines the relevance of such material for the needs of modern production. The company «_" represents the entire product range of products from tungsten. Sincere attention to the needs of each customer, regardless of order value, delivery in the shortest time, flexible system of discounts to wholesale customers determine the face of our company.