Pure Tungsten Tube

1. Brand: XZY

2. Catalog: Tungsten product

3. Material: High Purity tungsten

4. Purity: W≥99.95%

5. Grade: W1

6. Density: 18.5g/cm³~19.2 g/cm³

7. Shape: Tube, Pipe, Round

8. Specification: Φ(6.0~200)mm×Φ(3.0~180)mm×(50~400)mm

9. Production Process: Sintering, Forging, Machining

10. Application: High temperature furnace, Sapphire crystal growing furnace, Quartz sintering furnace

11. Standard: ASTM B760

Product Introduction

Pure tungsten tube is a tubular material mainly made of high-purity tungsten. Its main component is tungsten, with a purity of over 99.95%. It has the characteristics of high strength, high hardness, high melting point, and good corrosion resistance. Due to its excellent characteristics, the high purity tungsten tubes are mainly used as thermocouple protection tubes in high-temperature furnaces, support components in sapphire single crystal furnaces, and quartz sintering furnaces.

Luoyang Rare Metal Research Materials Co., Ltd strictly customizes and produces tungsten tubes products of various specifications and sizes according to customer requirements. We can provide design solutions that meet different applications for you.

Our Advantages

1) High melting point and good deformation resistance:

Our pure tungsten tube has excellent performance, and we pay great attention to the creep resistance of the products in the production process to ensure that the deformation of the products is small after repeated use.

2) High purity:

We use high-purity and low impurity tungsten powder raw materials, ensuring that the purity of the product is above 99.95%, it's suitable for applications that require extremely high material purity.

3) Mature processing technology

We can guarantee precise dimensions and smooth surfaces: the inner surface smoothness is ≤ 6um. The smooth inner and outer walls ensure zero contamination of the products in the container even at high temperatures.

4) No internal cracks:

Generally, tungsten tubes with internal cracks have a short service life. Before leaving the factory, all tungsten tubes will be tested by eddy current to prevent internal cracks.

Product Characteristic

Pure tungsten tube have many excellent characteristics:

1) High melting point:

The melting point of tungsten is as high as 3410 ℃, which enables tungsten tubes to work stably in extreme high temperature environments.

2) High thermal conductivity:

Tungsten has a high thermal conductivity, which helps to dissipate heat.

3) High strength and high hardness:

It has high strength and hardness, this property making them suitable for applications that require heavy loads and wear occasions.

4) Corrosion resistance:

It has good corrosion resistance and can work stably in various chemical environments.

5) Low pollution:

This characteristic ensures that tungsten tubes will not contaminate the products inside the container when used in high-temperature environments

Product Application

The main uses of pure tungsten tubes include:

- Refractory metal components of industrial high-temperature furnaces:

It can withstand high temperature environments and is often used as thermocouple protection tubes in high-temperature furnaces.

- Sapphire single crystal furnace and high-temperature sintering furnace hot zone

In sapphire crystal growth furnaces and high-temperature sintering furnaces, it is used as a support and thermal heat shield to ensure the stable operation of the equipment.

Generally speaking, the crystal growth temperature of sapphire needs to reach above 2200℃, and tungsten tubes are used as heat shield materials to ensure the temperature stability of the thermal field.

 Refractory metal parts of quartz continuous melting furnaces:

Due to the long-term high temperature resistance of tungsten, tungsten tubes have become one of the key components of quartz continuous melting furnaces.

Tungsten tubes, tungsten material tables, tungsten core rods, and tungsten formers constitute the four key components of quartz continuous melting furnaces. Tungsten tubes and tungsten material tables are assembled into tungsten pots by threaded connection, which are the most core components of quartz continuous melting furnaces.

- LED industry:

They are used to make supports and thermal insulation barriers for ruby and sapphire crystal growth and rare earth smelting in the LED industry due to their high temperature resistance and low pollution.

- Chemical industry:

It can be manufactured corrosion-resistant containers, pipes, storage tanks, etc.

Luoyang Rare Metal Research Material Co.,Ltd can supply various specifications and shapes of high quality tungsten tubes, they all can be customized according to customer needs. Including tungsten groove for rare earth smelting, and a complete set of tungsten-molybdenum components for the hot field of sapphire crystal growth furnaces.

Production Technology

High purity tungsten tubes are mainly produced in the following ways:

1) General tungsten tubes are formed as a whole by powder metallurgy sintering.

The tungsten powder is transferred into a specific mold, isostatically pressed and formed, and the powder blank is machined, and then loaded into a medium frequency furnace for sintering to obtain a sintered tungsten tube. After machining again, a tungsten tube with a better surface is obtained.

This production process is generally aimed at tungsten tubes with a diameter greater than 80mm. If it is a small diameter tungsten tube, it can be produced in the following way.

2) Tungsten tubes are produced by drilling holes in forged tungsten rods.