The Pure Tungsten Manufacturer!
Zhuzhou Kingdon has been committed to providing customers with high-quality tungsten and molybdenum products, as well as design and solutions, and is particularly good at vacuum coating, vacuum furnaces and optical coating.Zhuzhou Kingdon has been committed to providing customers with high-quality tungsten and molybdenum products, as well as design and solutions, and is particularly good at vacuum coating, vacuum furnaces and optical coating.
Why choose us
Experienced
With 20 years' experiences in this filed,ZZKD offers a wide range of superior quality products and focuses its efforts on development,production and sales in Tungsten and Molybdenum high performance material and products.
Production Market
Good reputation in USA ,European countries, India,Singapore,Germany,JP,TW and etc.
Our Service
Usually we will make offers according to customers'inquiry or recommend raw material according to customers'applications; Also we are able to send free samples for customers'confirmation and testing.When the customers have any questions after receiving shipment, we will reply them promptly and settle the problems at our soonest.
Pure Tungsten Wire
Appearance
Black surface or alkali washing surface
01
Diameter
0.3mm - 3.0mm
02
Tolerance
+/-0.02mm
03
Unit weight per coil
According to customers' requirement
04
Packing
About 20kgs packed in a plywood box
05
Tungsten Wire Material Chemical Composition
|
W (>%) |
Chemical Content (<%) |
|||||||||||
|
99.999 |
Fe |
Ca |
Be |
Sn |
Al |
Ni |
Zn |
Sb |
Pt |
K |
Ta |
Na |
|
0.0001 |
0.00005 |
0.000005 |
0.000005 |
0.00005 |
0.00001 |
0.00005 |
0.00005 |
0.00003 |
0.000005 |
0.0001 |
0.00005 |
|
|
Cr |
Pb |
As |
Mg |
Ti |
Bi |
Mo |
Cd |
Cu |
Ba |
Co |
Mn |
|
|
0.000005 |
0.00001 |
0.00005 |
0.00005 |
0.000005 |
0.00001 |
0.00001 |
0.000005 |
0.000007 |
0.00001 |
0.000005 |
0.000005 |
|
|
99.99 |
Fe |
Ca |
Be |
Sn |
Al |
Ni |
Zn |
Sb |
Pt |
K |
O |
Na |
|
0.0001 |
0.00045 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0005 |
0.0040 |
0.0009 |
|
|
Cr |
Pb |
As |
Mg |
Ti |
Bi |
Mo |
Cd |
Cu |
Ba |
Co |
Mn |
|
|
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0002 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
0.0001 |
|
|
99.95 |
Fe |
Ca |
P |
Sn |
Al |
Ni |
N |
Sb |
Si |
O |
Pb |
As |
|
0.005 |
0.003 |
0.001 |
0.0001 |
0.002 |
0.003 |
0.003 |
0.001 |
0.003 |
0.003 |
0.0001 |
0.002 |
|
|
Mg |
C |
Bi |
Mo |
|
|
|
|
|
|
|
|
|
|
0.002 |
0.005 |
0.0001 |
0.001 |
|
|
|
|
|
|
|
|
|
Electronics industry: Used as electron tube filaments, electrodes and electric heating wires, with excellent electrical conductivity and thermal stability.
Vacuum Heating System: Used as a heating element in a high temperature furnace, suitable for vacuum or inert atmosphere environment.
Semiconductor/Sputtering Source: Used as a lead or hook wire material for electron beam evaporation source or sputtering target to ensure high purity and stability of the deposition process.
Medical and Scientific Research Equipment: Used as a functional component in high-precision instruments such as scanning electron microscopes (SEM), mass spectrometers, and ion sources.
Production process of Pure Tungsten Wire
Pressing
Tungsten powder is sifted and mixed. A binder may be added. A fixed amount is weighed and loaded into a steel mold which is loaded into a press. The powder is compacted into a cohesive, yet fragile bar. The mold is taken apart and the bar removed.
Presintering
The fragile bar is placed into a refractory metal boat and loaded into a furnace with a hydrogen atmosphere. The high temperature begins to consolidate the material together. Material is about 60% – 70% of full density, with little or no grain growth.
Full Sintering
Bar is loaded into a special water-cooled treating bottle. Electric current will be passed through the bar. The heat generated by this current will cause the bar to densify to about 85% to 95% of full density and to shrink by 15% or so. Additionally, tungsten crystals begin to form within the bar.
Swaging
The tungsten bar is now strong, but very brittle at room temperature. It can be made more malleable by raising its temperature to between 1200°C to 1500°C. At this temperature, the bar can be passed through a swager. A swager is a device which reduces the diameter of a rod by passing it through a die which is designed to hammer the rod at about 10,000 blows per minute. Typically a swager will reduce the diameter by about 12% per pass. Swaging elongates the crystals, creating a fibrous structure. Although this is desirable in the finished product for ductility and strength, at this point the rod must be stress-relieved by reheating. Swaging continues until the rod is between .25 and .10 inches.
Drawing
Swaged wire of about .10 inches can now be drawn through dies to reduce the diameter.
Tungsten Wire Packaging
The Tungsten Wire is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.
Of all metals in pure form, tungsten has the highest meeting point(3410℃,6192oF),lowest vapor pressure(at temperatures above,650℃,3000oF) and the highest tensile strength. It is the ideal material for ultra high temperature and high vacuum applications.
Advantages of Tungsten Buck Sheet
High Thermal Conductivity
Tungsten copper sheets boast an impressive level of thermal conductivity, making them invaluable in applications where efficient heat dissipation is crucial. Industries such as electronics, aerospace, and power generation benefit from this property, as it allows for the effective management of heat in high-performance devices and systems.
Exceptional Strength and Toughness
The combination of tungsten and copper results in a material that exhibits remarkable strength and toughness. This makes tungsten copper sheets ideal for applications requiring resistance to wear, high temperatures, and mechanical stress. Industries like manufacturing, defense, and automotive find this strength-to-weight ratio advantageous for components subjected to demanding conditions.
Electrical Conductivity
While tungsten is known for its high melting point and excellent thermal properties, copper is renowned for its exceptional electrical conductivity. Tungsten copper sheets strike a balance between these two characteristics, offering good electrical conductivity alongside their thermal conductivity. This makes them suitable for applications where both electrical and thermal performance are critical, such as in electronic packaging and power distribution systems.
Wear Resistance
Tungsten copper sheets are prized for their wear-resistant properties, making them suitable for applications involving friction, abrasion, and high-velocity flows. This attribute is particularly advantageous in manufacturing processes that require materials capable of withstanding harsh conditions, contributing to extended component lifetimes and reduced maintenance requirements.
Electrodes and Electrical Contacts
The unique combination of tungsten and copper in sheet form is widely used in the production of electrodes and electrical contacts. The high melting point of tungsten, coupled with the excellent electrical conductivity of copper, makes tungsten copper sheets ideal for applications like spark erosion and resistance welding, where durable and efficient electrical contacts are paramount.
Radiation Shielding
Tungsten copper sheets find applications in the field of radiation shielding due to tungsten's high density and copper's ability to disperse heat. This makes the alloy suitable for medical and industrial applications where protection against radiation is essential, such as in X-ray equipment and nuclear reactors.
Applications of Tungsten Buck Sheet
Electrical and Electronics: Used as electrodes in welding applications due to their high melting point and excellent conductivity.Employed as high-voltage electrical contacts in electrical discharge machining (EDM) and electrical switches.
Aerospace: Utilized in aerospace components such as balance weights, counterweights, and control surfaces due to their high density and strength-to-weight ratio.
Medical: Found in radiation shielding applications, including X-ray equipment and radiotherapy machines, due to tungsten's ability to attenuate radiation.
Manufacturing: Used as tooling material for machining, milling, and drilling applications where high-density materials with exceptional hardness and wear resistance are required.
Defense: Employed in armor-piercing projectiles and kinetic energy penetrators for military applications due to tungsten's density and hardness.
Sports Equipment: Utilized in darts, fishing weights, and golf club heads due to tungsten's high density, allowing for compact and precise designs.
Chemical Industry: Found in chemical processing equipment such as crucibles, reaction vessels, and sputtering targets due to tungsten's resistance to corrosion and high temperatures.
We're well-known as one of the leading pure tungsten manufacturers and suppliers in China. Please rest assured to buy high quality pure tungsten for sale here from our factory. Also, customized service is available.
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