The latest price of φ0.76x3x50mm tungsten filament coil is USD 1.20/PC on June 12, 2024, EXW XIAMEN, CHINA.

What is Tungsten Filaments?

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.

Why Tungsten Filaments Are Used in Electron Gun?

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.

Why Are Tungsten Filaments in the Electron Gun Folded?

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.

More product details please visit:http://www.tungsten.com.cn/tungsten-heater.html

The latest price of φ3.20x175mm 2% yttrium tungsten electrode is USD 2.40/PC on June 12, 2024, EXW XIAMEN, CHINA.

What is Yttrium Tungsten Electrode?

Yttrium is a lanthanide metal found in most rare earth minerals, especially yttrium tantalite. It can be used as the yttrium phosphor to produce the red color on television screens and monitors and used as a superconductor and as a component of X-ray filters and superalloys. When added to tungsten as a rare earth element, it can be used as a welding electrode.

Among the non-consumable electrodes, the yttrium tungsten electrode is the most consistent, so it is often used to weld steel structures and non-ferrous alloys such as carbon steel, low alloy steel, copper, titanium, stainless steel, etc. under direct current/DC. This type of electrode arc beam is slender and has a large degree of compression, and its penetration is the largest in medium and large currents. Thanks to these characteristics, it is especially popular in the military industry and aerospace industry.

Yttrium tungsten welding electrode contains 1.8-2.2% yttrium oxide, and the electron escape work is 2.8-3.2ev. They are marked WY-20 (navy blue) according to international marking. Among the components of the WY20 electrode, there are silicon, molybdenum, manganese, sulfur, carbon, and phosphorus. When the impact hardness is 100 J/cm2, the surfacing coefficient is 9.5 h/Ah. One of the characteristics of domestic electrodes is the need for short arc processing and pre-baking. The last is done in a dedicated furnace for an hour.

More product details please visit:http://www.tungsten.com.cn/yttrium-tungsten-electrodes.html

The tungsten alloy counterweight crankshaft is used to balance the rotational inertia force and moment generated by the connecting rod big end, connecting rod journal and crank, so that the engine crankshaft runs smoothly. Some counterweight crankshafts are made integrally with the crankshaft, which is an extension of the crankshaft, and some are separately made parts, which are fixed on the crank with bolts.

Tungsten alloy has the advantages of small size, high density, high hardness, high wear resistance, strong corrosion resistance, strong impact resistance, high melting point, high temperature resistance, environmental protection, etc. Tungsten alloy is definitely a suitable crankshaft material.

Usually tungsten alloy parts are often used as counterweights for machines, boats, airplanes, yachts, spaceships, and other places that require small size and heavy weight. Tungsten alloys are widely used in high-performance engines (cars, racing cars, motorcycles, trucks) , yachts, etc.).

For more information about tungsten alloy products, please visit: tungsten-alloy.com

According to the way of fragment generation, tungsten alloy prefabrication fragment can be divided into three types: natural fragments, pre-controlled fragments and prefabricated fragments. It forms a three-dimensional killing area in space. The shape and size of the three-dimensional killing area is determined by the scattering characteristics of the fragments. The main parameters of fragment scattering characteristics include fragment scattering angle and direction angle, and the distribution variance of the distribution density of fragment numbers along the direction angle.

Whether the fragment can effectively kill the target is closely related to the speed, shape and quality of the fragment hitting the target, and tungsten alloy material can meet this requirement. Chinatungsten Online has been engaged in the production and sales of tungsten alloy fragment rings for more than 20 years, and can provide high-quality products according to customer requirements.

For more information about tungsten alloy products, please visit: tungsten-alloy.com

Tungsten alloy block can be made into weapon parts, molds and counterweights, such as speedboat counterweights, vehicle counterweights, aircraft counterweights, helicopter counterweights, marine counterweights and tank counterweights, etc.

Dies are mainly used for forming techniques in material processing, including pressing the workpiece with the die, thereby reducing the cross-section and increasing the length. Due to its high melting point and good corrosion resistance, tungsten alloy block is the best raw material for making molds.

For more information about tungsten alloy products, please visit: tungsten-alloy.com

Tungsten alloy ring is generally used in industrial counterweights, or shields for medical devices. The thickness of the ring can be as thin as 2mm, but because it is too thin, it is prone to cracking during processing, so the rejection rate is high. The thinner the wall thickness, the higher the price.

For more information about tungsten alloy products, please visit: tungsten-alloy.com

Tungsten alloy medical syringe shield can be used for collimators, nuclear radiation shields, ray blockers, PET syringe shields, protective canisters, radioisotope containers, DNA (FDG) containers, multi-leaf collimators, etc. .

The advantages of tungsten alloy materials:

1.High radiation mask absorption capacity

2.Under the same radiation mask performance, the tungsten alloy mask is thinner than the lead material

3.Non-toxic, environmentally friendly materials

4.Good machinability

5.Hard and wear-resistant, no need for coating protection

6.Easy to disinfect and sterilize

For more information about tungsten alloy products, please visit: tungsten-alloy.com

Tungsten alloy military cube has high density and small volume, and can be used in fields that require small and high specific gravity components. Tungsten alloy cube can be used as golf ball weights, fishing sinkers, military tungsten alloy cube can be used for military weights, missile warheads, armor-piercing warheads, shotgun bullets, prefabricated fragments; it can also be used as a counterweight for oil drilling platforms, and some other High-secret areas, such as mobile phone vibrators, balance of pendulum clocks and automatic watches, shock-proof tool holders, flywheel weights, etc.

For more information about tungsten alloy products, please visit: tungsten-alloy.com

Tungsten alloy bar (90WMoNiFe) with Anviloy 1150 is made from metal powder refined at a specific high temperature using special high temperature powder metallurgy technology. Such tungsten alloy bar material has low coefficient of thermal expansion, good thermal conductivity and good material properties. Product application

1. Tungsten alloy for die-casting field.

2. Hot riveting bearing material (90WMoNiFe), this material can be used as hot riveting bearing material due to its good comprehensive high temperature performance.

3. Hot stamping valve (90WMoNiFe), this material has both thermal conductivity and high-temperature performance, and maintains good red hardness at 1100℃, as the anvil block for valve stamping; it can significantly improve the service life of the anvil block.

For more information about tungsten alloy products, please visit: http://www.tungsten-alloy.com

The density of tungsten alloy plate is between 16.9 and 18.1g/cm3, which means that tungsten alloy is the heaviest metal material. 90WMoNiFe Tungsten alloy has excellent radiation shielding ability, electrical conductivity, thermal conductivity, corrosion resistance and mechanical properties. Chinatungsten Online can customize size according to customer requirements. It has the advantages of high density, good elongation, durability and long service life.

For more information about tungsten alloy products, please visit: tungsten-alloy.com