Tungsten round bar is a rod made of tungsten metal. Rare metals usually refer to metals that are less abundant or sparsely distributed in nature. Tungsten is a widely distributed element, which is found in almost all kinds of rocks, but the content is low. The content of tungsten in the earth's crust is 0.001%, and the average content in granite is 1.5×10-6. This characteristic makes its extraction very difficult. Usually, it can only be separated and extracted by organic solvent extraction and ion exchange. With the advancement of science and technology, the development of metallurgical technology, equipment and analysis, and detection technology, and the expansion of the production scale of rare metals, the purity of tungsten has been continuously improved, its performance has been continuously improved, and its variety has continued to increase, thus expanding the application field of tungsten. my country is rich in tungsten ore resources, and its output and total exports of tungsten rank first in the world.
Tungsten is a strategic metal. As we all know, rare metals are important strategic resources of the country, and tungsten is a typical rare metal with extremely important uses. It is an important part of contemporary high-tech new materials. A series of electronic optical materials, special alloys, new functional materials, and organometallic compounds all need to use tungsten with unique properties. Although the dosage is not large, it is very important and indispensable. Therefore, it is widely used in contemporary communication technology, electronic computer, aerospace development, medicine and health, photosensitive materials, optoelectronic materials, energy materials, catalyst materials, etc.
Tungsten round bar, also known as a tungsten rod, is a very hard and stable metal material. Here are its features and advantages:
1. Advantage
- High strength: Due to the high density and high hardness of the tungsten rod, it has high resistance to bending and pressure;
- High wear resistance: tungsten rods can withstand high-speed movement or heavy-loaded objects without abrasion;
- Good electrical and thermal conductivity: Tungsten rods have good electrical and thermal conductivity in high-temperature environments, so they can be used to manufacture some high-temperature electronic components;
- Ease of processing: Although tungsten rod is very hard, it is also easy to process in some processing techniques, and complex shapes and sizes can be manufactured
2. Physical and chemical properties
Tungsten is a rare metal with a high melting point, which can increase the high-temperature hardness of steel. Tungsten is a silver-white metal that looks like steel. Tungsten has a high melting point, low vapor pressure, and low evaporation rate. The chemical properties of tungsten are very stable. It does not react with air and water at room temperature. Without heating, any concentration of hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid, and aqua regia has no effect on tungsten. When the temperature rises to 80°-100 °C, among the above-mentioned acids, except hydrofluoric acid, other acids have a weak effect on tungsten. At room temperature, tungsten can be quickly dissolved in the mixed acid of hydrofluoric acid and concentrated nitric acid, but it does not work in an alkaline solution. In the presence of air, molten alkali can oxidize tungsten to tungstate, and in the presence of oxidants (NaNO3, NaNO2, KClO3, PbO2), the reaction to form tungstate is more violent. At high temperatures, it can combine with oxygen, fluorine, chlorine, bromine, iodine, carbon, nitrogen, sulfur, etc., but not with hydrogen.
|
Machining |
Diameter |
Diameter tolerance % |
Max length, mm |
|
Forging,
Rotary swaging |
1.6-20 |
±0.1 |
2000 |
|
20-30 |
±0.1 |
1200 |
|
|
30-60 |
±0.1 |
1000 |
|
|
60-70 |
±0.2 |
800 |
3. Chemical Composition
|
Grade |
Tungsten content |
Contents of the impurity element |
|
|
Total content |
Each content |
||
|
W1 |
99.95% min |
0.05% max |
0.01% max |
|
W2 |
99.92% min |
0.08% max |
0.01% max |
|
WAL1, WAL2 |
99.95% min |
0.05% max |
0.01% max |
4. Application Fields
Tungsten round bars are widely used in many applications due to their extremely high melting point, density, and hardness. The following are the main applications of tungsten bars.
- Electrodes: It's often used as igniters, TIG welding, and high-intensity discharge lighting electrodes.
- Tools: It can be processed to make high-speed tungsten steel tools for processing various metals.
- Nuclear industry: Due to the high density and melting point of tungsten bars are used in nuclear fuel control rods and reactor inserts of nuclear reactors.
- Electronics: It can be used in fusion reactions and high-power heat generators.
- Medicine: Inject radioactive isotopes into tungsten rods, making it a method of tumor treatment.
In summary, tungsten bars are used in a variety of applications, from making tools to being used in high-tech nuclear reactors, electronics, and medical treatment.
5. pacakge and shipment of tungsten round bar
1.) Pacakge: To keep the package safety , so they can reach to you in a very good condition, Our detailed pacakge steps as follows:
1. Package with moisture-proof paper.
2. Package with Kraft paper.
3. Package with foam plastics in all side of wooden case.
4. Package products in wooden case.
2.) Shipment: Various Methords of Transportation for You, we will choose the fastest shipment to ship the tungsten round bar to your door :
1. Air transportation
2. Sea transportation
3. By express mail: DHL, FedEx, EMS, UPS, SF-Express,etc.
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