Circle, rod rhenium
The development of the world economy is inseparable from the use of knowledge-based high technologies. The competitiveness of any industry in the XXI century depends on the use of «materials of the future» — no alternative raw materials with exceptional qualities. Aviation, space technology, nuclear energy, electrical engineering, military industry, machinery and electronics today is unthinkable without the refractory metals. This group of materials belongs and rhenium wire.
Rhenium blanks made by the method of powder metallurgy. First, get the Fort. Then it is heated and forged on a special rotary forging machine. So get the bars Ø 2−3 mm, which then, due to the high ductility of rhenium, pull in the superfine wire of a few microns in diameter.
Rhenium is a non-alternative construction material for the production of parts and components of special equipment designed for working in corrosive environments at t° above 1000 °C. the alloys of rhenium make the filament, grid heaters cathodes in cathode ray tubes, receiving and amplifying and generating tubes, thermionic generators; filament in mass spectrometers and ion gauges and other similar devices. In geodetic devices important stable operation of optical or mechanical components mounted on thin metal hangers. Such suspensions are in levels, theodolites, gyrotheodolite. In the most accurate — the hangers are wire, or thin strips of rhenium alloys. For measuring the highest temperatures (up to 2500°C) used thermocouple alloys of rhenium and tungsten. They are much more accurate than standard thermocouples tungsten + molybdenum. Termoelektrodnye wire produced from the alloy of rhenium with tungsten grades BP-20 (20% rhenium), and BAP-5 (with aluminum and additives and silica-5% rhenium) or BP-5 (with 5% of rhenium), which is obtained by the method of powder metallurgy. Figure termoelektrodny power (TEDS) of rhenium thermocouple wire of circular section, taken from different parts of the same segment of wire at t° 1550±20°C does not exceed 50 mV. Thermocouple wire ВР5/ВР20 has a different nominal figures TEDS, which are reflected in the calibration. Supplied tungsten-rhenium thermocouple in ceramic and molybdenum sheaths. Thermoelectrodes BAP-5 (BP-5) is complete only together with the electrode, and thermoelectrodes BP-20, which possess the same statistical characteristics, which are taken from the same series. Indicators operating temperatures are 1400−2300°C. In incandescent lamps on the inside of the glass over time, there is a dark patina. This is the end result of the so-called water cycle. No matter how carefully removed the air from the bulb, the part of water vapor always remains. At high temperatures water dissociates into hydrogen and oxygen; oxidizing the heated tungsten filament. Thoriated tungsten evaporates and condenses on the glass in the form of metal tungsten, the recovered hydrogen. Thus, the smallest particles of tungsten evaporate from the filament, forming on the glass a dark spot, and the filament becomes thinner until it breaks off. Rhenium at 1300 °C twice, and at 1750 °C in 8 times more resistant tungsten to the water cycle. Alloys of tungsten with rhenium — much better suited for the manufacture of filaments than pure tungsten.
Certified supply rhenium circle and wire. The specification included data on the percentage composition and mechanical properties of products. We can easily buy in bulk any semi-finished products for large-scale production. We also work with retail buyers. A high level of service and speed of service are the face of our company.
Buy at best price
Digging LLC «Electrocentury-steel» has unlimited range of rhenium rental of the highest quality. We offer alloys for special purpose at best price from warehouses in Ukraine and Russia. If you are interested in our offer, contact your nearest office. Qualified specialists will provide all necessary information regarding the products, price range, conditions of implementation. The cost of the product depends on the parameters of products and additional conditions of delivery.