Tungsten Plate Price in April 2023

3.5x96x560mm tungsten plate price is 520.00 USD/PC in the middle of April 2023, EXW XIAMEN, CHINA. 

Tungsten plates can be as thin as 0.01mm or as thick as 127mm, with widths typically ranging from 10mm to 800mm. They can be used in many different applications and is valued for its corrosion resistance, ability to withstand extremely high temperatures, and ability to create rigidity and hardness when combined with other metals in the alloy.

Tungsten is used in the aerospace, research, building materials and light bulb industries. It is the predominant metal in electric furnace heating elements, as well as in any assembly where high pressure/high temperature environments are expected. Plates made of tungsten are commonly used in furnace construction, but are also important for making parts for the electronics and semiconductor industries, and can be found in a variety of lighting, vacuum plating, electronic vacuums and shielding.

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Lanthanated Tungsten Electrode Price in April 2023

Ø3.2x175mm lanthanated tungsten electrode price is 2.00 USD/PC in the middle of April 2023, EXW XIAMEN, CHINA. 

WL20 electrodes contain at least 1.7% to 2.2% lanthanum for excellent arc starting, low burnout rate, good arc stability and excellent re-ignition characteristics. They are ideal if you want to optimize your welding capabilities. They can work well on either AC or DC electrode negatives with tips, or they can be used with AC sine wave power supplies. The tungsten electrode adding with rare earth element lanthanum holds sharp tips well, which is an advantage for welding steel and stainless steel on DC or AC from square wave power sources.

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Various Shapes of Tungsten Filaments in Different Uses

Tungsten filament is a product of pure tungsten wire or dropped tungsten wire after finishing, with tungsten powder was main raw material, potassium, aluminum, silicon and other chemical elements as additives. Its purity is as high as 99.95%. 

According to the number of tungsten wire strands, tungsten filament can be divided into products made of single-strand tungsten wire and products made of multi-strand tungsten wire. When it is wound from a single strand of tungsten wire, the diameter of the tungsten wire is generally 0.2mm~2.0mm; when it is wound from multiple strands of tungsten wire, the diameter of the tungsten wire is generally 0.2mm~1.3mm, and the most commonly used number of strands is 2 strands and 3 strands. It should be noted that when twisted from multiple strands of tungsten wire, it is necessary to control the twisting direction and pitch of the twisted tungsten wire.

According to different shapes, tungsten filaments can be divided into many types, such as double hump type, single hump type, funnel type, coil type, straight type, door type, hook type, etc. There are also certain differences in the uses of different shapes of filaments. 

The characteristics of the filament made of tungsten metal include metallic luster, silvery white or off-white appearance, clean surface, non-radioactive, high melting point, low vapor pressure, low evaporation rate, small thermal expansion coefficient, high temperature resistance, wear resistance, impact resistance, corrosion resistance, etc.

It can be used for electric vacuum and evaporation of electronic components because it is a resistance heating body for surface metal vapor deposition, and acts as a high-temperature heating element after being energized and heated.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for more than two decades. We can supply various types of tungsten filaments as per the drawings. Please free feel to contact us if you have got any purchasing plans.

If you have any inquiry of tungsten filaments, please feel free to contact us:
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Tungsten Heater to Be Used in Vacuum Evaporators

Tungsten heater is a typical tungsten product made of pure tungsten wire or doped tungsten wire through drawing, stranding, pressing molding and surface treatment (electropolishing or alkaline cleaning or cleaning). 

It has quite excellent thermal, mechanical and chemical properties, such as high melting point, low evaporation rate, small thermal expansion coefficient, impact resistance and corrosion resistance, etc., so it has a wide range of uses, such as used as evaporation source materials for vacuum evaporators. 

Evaporation is a kind of vacuum coating technology. It is to put the plated parts to be coated in the vacuum evaporator. When the vacuum coating machine is powered on, the heater will heat up, and then the low melting point coating material hanging on its surface will be heated. Vaporization or sublimation, and in the form of atoms, molecules or atomic groups, the surface of the tungsten is heated, condensed on the surface of the plated part with a certain temperature, and condensed into a thin film.

It should be noted that the diameter, extension, shape and surface cleanliness of the heater should be checked before evaporation. Because the diameter or extension is too large, the heater is prone to fuse; on the contrary, if the diameter or extension is too small, it is not conducive to the assembly of plating materials, and its resistance will be too large, which is not conducive to self-heating.

Tungsten heater evaporation is mainly used to produce picture tubes, mirrors, plastics, car lights, mobile phone casings, precision optics, craft glass and coatings for photovoltaic products. Common plating materials are aluminum, iron, copper, nickel, chromium, etc.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for more than two decades. We can supply various types of tungsten heaters as per the drawings. Please free feel to contact us if you have got any purchasing plans. 

If you have any inquiry of tungsten heater, please feel free to contact us:
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EB Tungsten Filament Price on April 3, 2023

The latest price of φ0.8mm EB tungsten filament is USD 2.00/PC, EXW XIAMEN, CHINA on April 3, 2023. 

Tungsten filaments, also called cathodes or electron emitters or electron sources, are mainly made of high-quality tungsten. Of all pure metals, tungsten has the highest melting point (3422°C), the lowest vapor pressure at temperatures above 1650°C, and the highest tensile strength. Tungsten also has the lowest coefficient of thermal expansion of all pure metals. This combination of properties makes tungsten an ideal material.

Tungsten can be used in both thermionic electron guns and field-emission (CFE) electron guns. Electron beams come from filaments made of various materials. The most common is the tungsten hairpin gun, which is widely used in scanning electron microscopes, transmission electron microscopes, and microprobe systems. This filament is a tungsten ring that acts as a cathode. Apply voltage to the loop to heat it up. The anode, which is positive relative to the filament, forms a strong attraction to electrons. This causes electrons to be accelerated towards the anode. Some accelerate near the anode and down the column to the sample.

An electron gun works at a high temperature, which is required for thermionic emission. For this, a filament or the cathode should be of a material that has a high melting point in order for it to continuously emit electrons. Tungsten filament is folded with various shapes to help in focusing the electron beam.

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Cerium Tungsten Electrode Price on April 3, 2023

The latest price of φ2.4x175mm cerium tungsten electrode is USD1.10/PC, EXW XIAMEN, CHINA on April 3, 2023. 

Cerium tungsten electrode (WC20) is alloyed with about 2% cerium oxide. It is a non-radioactive, refractory or non-consumable metal electrode material, which is the preferred substitute for thorium tungsten electrodes. Regular diameter of the electrode is between 0.5mm and 12.0mm, and the length is 150mm and 175mm.

The addition of this small percentage of cerium oxide increases the electron emission qualities of the electrode which gives them a better starting characteristic and a higher current carrying capacity with no spitting. With the increase of cerium oxide content, the ablation resistance and arc starting of cerium tungsten electrode will increase; with the increase of use time, the welding performance will gradually decrease.

The electrode has excellent arc starting properties at low current, and can operate successfully with AC or DC electrode negative. If used on higher current applications, the cerium oxide may be concentrated to the excessively hot tip of the electrode. In addition, WC20 is also used in inert gas shielded arc welding, hydrogen atom welding, argon arc surfacing, pulse argon arc welding, plasma welding, plasma cutting, plasma spraying, plasma melting, etc. The welding materials can be carbon steel, stainless steel, silicon copper, copper, bronze, titanium and so on.

If you have any inquiry of cerium tungsten electrode, please feel free to contact us:
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