Production of tungsten wire
Manufacturing
Tungsten wire is made from powder rods that are rolled out on a rotary forging machine. A rod is obtained which is drawn into a tungsten wire, 1 to 3 mm in diameter, by drawing. Smaller diameter wire is called strand. It can also be made with the addition of chromium, cobalt, carbon. At the same time, its strength increases. Tungsten drawn wire of groups A, B, C (black) of VA, BCh, BPH grades is also made by powder metallurgy.
Percentage composition, GOST 19671-91
| Grade | Fe | Si | Mo | W | Al | Ca |
| VA | ≤ 0.005 | 0.001 - 0.006 | ≤ 0.03 | min 99.95 | 0.001 - 0.004 | ≤ 0.005 |
| BPH | ≤ 0.01 | 0.001 - 0.01 | ≤ 0.04 | min 99.9 | 0.0010 - 0.01 | ≤ 0.02 |
Grade BM GOST 19671-91
| W | impurities | - |
| min 99.7 | ≤ 0.05 | 0.17≤ Oxide Th ≤ 0.25 |
Usage
This grade is used in x-ray engineering and radioelectronics for manufacturing of heaters and cathodes for electronic devices which are intended to operate under conditions of vibration, shock, t° 2100 °C. Tungsten wires are used to manufacture cathodes for gas-discharge and electronic devices, bushings and other parts that do not require tungsten with special additives. Tungsten wire for lighting devices is produced in accordance with
The supplier
We offer to buy tungsten wire from the specialized warehouse of the supplier Evek GmbH with delivery in any city. Full compliance with modern quality requirements. Supplier Evek GmbH offers to buy refractory alloys, the price is optimal in this segment of rolled metal products. Timely delivery is provided by representative offices in Eastern European cities.
Buy, bargain price
We offer refractory alloys, the price - determined by the technological features of production without the inclusion of additional costs. On the site of the company displays information about the latest arrivals of products. In the segment of rare and refractory metals, Evek GmbH is a profitable supplier.
