Pure Tungsten Wire

1. Brand: XZY

2. Catalog: Tungsten product

3. Material: High purity tungsten

4. Purity: 99.95% min

5. Grade: W1

6. Density: 19.35 g/cm3

7. Surface: Black surface, White surface, Alkali washed surface

8. Dimensions: Dia 0.3mm-3.0mm

9. Production Process: Sintering, Forging, Wire drawing

10. Standard: ASTM B760

11. Application: High temperature furnace heaters, Support, Lead wire, Electrodes ect.

Product Introduction

Pure tungsten wire is made of high-purity tungsten metal powder as raw material, through powder metallurgy and plastic processing methods. The tungsten content is usually above 99.95%. It has an extremely high melting point and hardness. Its melting point is as high as 3410 ℃, which is the highest melting point among all pure metals. This property makes the products to maintain their structural stability at high temperatures. It is mainly used as a heating element material for high-temperature furnaces, grid wires of electron tubes, side rods, lead wires, brackets, reinforcing ribs for composite materials, electrodes of gas discharge lamps, etc.

According to different surface colors, it can be divided into black tungsten wire and white tungsten wire; the surface of black tungsten wire is coated with graphite emulsion, which is a more uniform and shiny black; Removing the graphite emulsion, it has a silvery white metallic luster, which we often call white tungsten wire.

According to their different shapes, they can be divided into straightened wires, coiled wires, stranded wires; According to different sizes, it can be divided into thick tungsten wire and thin tungsten wire.

Product Advantages

1) Luoyang Rare Metal Research Materials Co.,Ltd can produce pure tungsten wires of different diameters and specifications according to customer needs.

2) Our products can guarantee a purity of more than 99.95%, with minimal impurities and no pollution.

3) We produce tungsten wires in strict accordance with fine tolerances to ensure the consistency of mechanical properties and layering level of the products.

4) During the production process, we use eddy current testing and other testing methods to measure the quality to ensure that the drawn tungsten wire has uniform wire diameter, no internal cracks, splits, no continuous pits and scratches, etc.

5) The products we produce have excellent performance and can fully meet customers' requirements for creep resistance, durability, thermal conductivity, reliability, and low pollution.

6) In addition to high purity tungsten wire, we also improve the anti-sagging performance of the material by adding doped rare earth elements or potassium elements.

Product Specification

Pure Tungsten Wire Specifications

Note: Potassium is not included as impurity content.

Product Features And Applications

From the perspective of physical and chemical properties, the characteristics of pure tungsten wire include high melting point, high density, high strength, high electrical resistivity, low vapor pressure, slow evaporation rate, high temperature resistance, wear resistance, impact resistance, acid and alkali resistance, etc.

It is a very common high-temperature material and has been widely used in lighting, electronics, high-temperature equipment ect.

Among them,

- It can be used to make electric light sources and electric vacuum components

- It can be used as high-temperature heating elements and high-temperature structural parts for various high-temperature furnaces and vacuum furnaces

- It is used to make tungsten twisted wire for vacuum evaporation

- It is used to make electric heating wire

Processing Process

Our pure tungsten wire is made by powder metallurgy method.

1) Raw materials: The raw materials are reduced into tungsten powder through a hydrogen reduction furnace, with an average particle size of 2-5 microns.

2) Pressing: Put the tungsten powder in a mold and use an isostatic press to press it into a rod-shaped billet. The uniformity of the rod-shaped billet needs to be paid attention to.

3) Sintering: Put the pressed tungsten billet into a high-temperature furnace for sintering. Its density is improved, but the internal structure is not dense enough at this time. The density of the sintered tungsten bar is generally 17.7g/cm³.

4) Rotary forging: After rotary forging, the tungsten bar is reduced in diameter, and the density is further improved. The ductility and strength are also improved. The density is above 19g/cm³, which provides a basis for subsequent drawing

5) Wire drawing: The forged tungsten bar becomes tungsten wire after wire drawing. Through wire dies of various diameters, the diameter is further reduced until the appropriate diameter is reached. In this process, the tensile strength of the tungsten wire is also increased.

Lubricant graphite is added during the wire drawing process. The diameter of the tungsten wire is between 20 um and 1 mm, and the tungsten wire is packaged in reels.