The 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.
Tungsten Copper Bar
Good resistance for high temperature and arc erosion,high strength,high density,good electric and thermal conductivity,small thermal expansion,easy machining.It is widely used as electrodes of resistance welding and electric spark erosion cutting machines,arcing contacts and vacuum voltage breakers or vacuum interruptors.
|
Class |
Impurity |
W |
Density(g/cm3) |
|
W90Cu10 |
0.5 |
Balance |
16.75 |
|
W85Cu15 |
0.5 |
Balance |
15.90 |
|
W80Cu20 |
0.5 |
Balance |
15.15 |
|
W75Cu25 |
0.5 |
Balance |
14.50 |
|
W70Cu30 |
0.5 |
Balance |
13.80 |
|
W60Cu40 |
0.5 |
Balance |
12.75 |
|
W55Cu45 |
0.5 |
Balance |
12.30 |
|
W50Cu50 |
0.5 |
Balance |
11.85 |
Features of Tungsten Copper Bar
High Melting Point
Tungsten boasts the highest melting point of all elements, exceeding 3,400 degrees Celsius (6,152 degrees Fahrenheit). This extraordinary property makes tungsten bars ideal for applications that involve extreme temperatures, such as in high-temperature furnaces and aerospace components.
Superior Density
Tungsten has a high density, making tungsten bars exceptionally heavy and providing them with impressive mass. This property is crucial in applications where weight is a factor, such as in counterweights for aircraft and as balancing weights in various machinery.
Outstanding Thermal Conductivity
Tungsten bars exhibit excellent thermal conductivity, allowing them to efficiently transfer heat. This property is advantageous in applications where heat dissipation is critical, including electronic components and as part of high-performance heat sinks.
Remarkable Mechanical Strength
Tungsten is renowned for its exceptional mechanical strength and durability. Tungsten bars maintain their structural integrity even under extreme conditions, making them suitable for applications requiring robust materials, such as in the manufacturing of tools, dies, and high-temperature furnace elements.
Corrosion Resistance
Tungsten is highly resistant to corrosion, ensuring that tungsten bars remain unaffected by various chemical environments. This property enhances their longevity and reliability in corrosive settings, making them suitable for applications in the chemical and petrochemical industries.
Excellent Machinability
Tungsten bars exhibit good machinability despite their hardness. This characteristic allows for the precision machining of intricate components, making tungsten bars valuable in industries that demand high-precision parts, such as the aerospace and medical sectors.
Resistance welding electrode
It integrates such features of tungsten and copper as high temperature resistance, electrical arc ablation resistance, high proportion, good electrical and heat conductivity, being easy to cut and transpiration cooling. It also owns such advantages of tungsten as high hardness, melting point and adherence resistance. It is often used for projection welding and butt-welding electrode with wear and high temperature resistance.
Electric spark electrode
It is used for the electrode of mould made from tungsten steel and high-temperature and ultra hard alloy. The common electrode has high consumption and low rate. The high electrical ablation rate, low consumption ratio, precise electrode size and quality processing performance of Copper tungsten can ensure that the precision of the work piece is greatly enhanced.
High-voltage discharge tube electrode
When the high-voltage vacuum discharge tube is working, the temperature of contact material will rise to thousands degree centigrade within several tenths seconds. High ablation resistance, high toughness, good electrical and heat conductivity of Copper tungsten provide necessary conditions to stable operation of the discharge tube.
Tungsten Copper Plate
Tungsten copper materials have high heat resistance and good thermal conductivity, and at the same time, they have a thermal expansion coefficient that matches silicon wafers, gallium arsenide, and ceramic materials, so they are widely used in semiconductor materials, suitable for high-power device packaging materials, heat sink materials, heat dissipation components, ceramics, and gallium arsenide bases, etc.
|
Class |
Impurity |
W |
Density(g/cm3) |
|
W90Cu10 |
0.5 |
Balance |
16.75 |
|
W85Cu15 |
0.5 |
Balance |
15.90 |
|
W80Cu20 |
0.5 |
Balance |
15.15 |
|
W75Cu25 |
0.5 |
Balance |
14.50 |
|
W70Cu30 |
0.5 |
balance |
13.80 |
|
W60Cu40 |
0.5 |
Balance |
12.75 |
|
W55Cu45 |
0.5 |
Balance |
12.30 |
|
W50Cu50 |
0.5 |
Balance |
11.85 |
Tungsten Copper Plate Application
Electrode materials
For high hardness materials and flake, electrical discharge machining, EDM product surface finish, high precision, low loss, effective conservation.
Contact Material
High pressure switch or circuit breaker arcing contacts and vacuum contacts, circuit board welding and electrical contact points.
Welding Material
Submerged arc welding machine, gas shielded welding tip, radio resistor factory (production of carbon film resistors, metal coating resistance) Resistance Welder Welding materials (copper tungsten alloy welding disc).
Tungsten Copper Plate Production Process
Powder preparation
The tungsten and copper powders are first prepared separately. The tungsten powder is obtained by reducing tungsten oxide with hydrogen at a high temperature. The copper powder is usually obtained by electrolysis or atomization. The particle size and purity of the powders are critical to the properties of the final product.
Mixing
The tungsten and copper powders are then mixed in the desired ratio using a ball mill or a high-speed mixer. The mixture is usually made up of 50-90% tungsten and 10-50% copper, depending on the application.
Pressing
The mixed powder is compacted into a pre-determined shape and size using a hydraulic press. The pressure applied varies depending on the size and density required. The green compact is then sintered to achieve the desired strength and density.
Sintering
The pressed powder is sintered at a temperature of around 1200-1400°C in a vacuum or reducing atmosphere. The tungsten and copper powders react during sintering, forming a metal matrix with tungsten particles dispersed throughout. The sintering process also reduces the pore volume, increasing the density of the material.
Machining
The sintered plate is then machined to the desired dimensions using a CNC milling machine. This step ensures that the final product meets the required specifications and tolerances.
Surface treatment
Finally, the tungsten copper plate may undergo surface treatment such as polishing, plating, or coating to enhance its appearance or improve its corrosion resistance.
Tungsten copper packaging
Tungsten is stable in air and packed without vacuum seal, unless requested. Wooden crater is applied when the cargo is over weight.
We're well-known as one of the leading tungsten manufacturers and suppliers in China. Please rest assured to buy high quality tungsten for sale here from our factory. Also, customized service is available.
