What Is Spherical Tungsten Powder?

Spherical tungsten powder is a kind of metal tungsten powder with spherical powder shape. It is the raw material for preparing tungsten processing materials, tungsten alloys and tungsten products.

Physical and Chemical Properties of Spherical Tungsten Powder:

Appearance is gray-black fine powder, melting point is about 3400 ℃, boiling point is about 5555 ℃, density is 19.3g/cm3 equivalent to gold, hardness is like diamond, reducibility is strong, purity is as high as 99.9%, bulk density is 11.6g/cm3, tapped Density 12.5g/cm3. Under normal circumstances, the higher the degree of spheroidization, the smaller the particle size and the narrower the particle size distribution of the powder, the better the powder flowability and the higher the bulk density.

Production Method of Spherical Tungsten Powder:

1) The product can be obtained by the secondary oxidation and re-reduction technology of tungsten powder.

2) Use the granulation and sintering method to produce spherical powder.

3) It can be prepared by rotating electrode DC arc plasma method.

4) Preparation of large particle powder from tungsten hexafluoride by vapor deposition method.

5) The ordinary tungsten powder is spheroidized and air-cooled with an inductively coupled plasma torch to obtain the product.

Spherical Tungsten Powder Application:

Spherical tungsten powder is the main raw material for the production of tungsten alloy, tungsten material and cemented carbide. W powder can be mixed with other metal powders to make tungsten alloy; W powder can be processed into tungsten materials such as tungsten rods, tungsten wires and tungsten bars; W powder can be made into tungsten carbide powder after carbon treatment, and tungsten carbide powder can be made into Cemented carbide tools such as milling cutters, drills and dies.

Spherical Tungsten Powder Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

For more information, please visit: http://spherical-tungsten-powder.com/

What is Cesium Tungsten Bronze?

Cesium tungsten bronze, also known as cesium tungsten oxide, is an inorganic nanomaterial with good near-infrared absorption effect. 780nm) new functional materials with high transmittance.

English name: Cesium Tungsten Bronze

Molecular formula: Cs0.33WO3

Molecular weight: 276

CAS number: 189619-69-0

Physical and Chemical Properties of Cesium Tungsten Bronze:

The molecular structure of cesium tungsten bronze is oxygen octahedral structure, the purity is higher than 99.9%, the bulk density is 1.5g/ml, the particle size is relatively uniform, the primary particle size is about 30nm, the specific surface area is about 50m2/g, and it is not easy to agglomerate, non-toxic , Non-radioactive features.

The Production Method of Cesium Tungsten Bronze:

Method 1: Preparation of Cs0.33WO3 from Na2WO4•2H2O and Cs2CO3

1. Using sodium tungstate Na2WO4•2H2O as raw material, prepare a sodium tungstate solution with a concentration of 0.5 mol/L.

2. Obtain tungstic acid sol by cation resin exchange, add citric acid (analytical grade) solution with a concentration of 1 mol/L or 2 mol/L and a cesium carbonate Cs2CO3 (analytical grade) solution with a concentration of 0.3 mol/L, and stir evenly, to obtain the precursor for the hydrothermal reaction.

3. Put the precursor solution into the autoclave, react at 190 ℃ for 3 days, and then go through ultrasonic washing, alcohol washing, centrifugation and drying to finally obtain Cs0.33WO3 powder.

Cesium Tungsten Bronze Application:

1. Transparent thermal insulation coatings and films.

2. Thermal insulation chemical fiber, textile fiber and other high-performance thermal insulation media.

3. Transparent heat insulation window film, building coating.

4. Auto film, PVB heat insulation laminated film, laser marking, laser welding, photothermal diagnosis and treatment, infrared filter.

Cesium Tungsten Bronze Packaging:

25kg or 50kg net weight, packed in double-layer polyethylene plastic bags inside, and plastic drums/iron drums as outer packaging; vacuum packaging or other net weight requirements, or the order weight is less than the standard packaging specifications, customized according to the actual situation; conventional packaging is Product name + batch number and other neutral text printing//writing, if you need personalized content, you can also customize.

For more information, please visit: http://cesium-tungsten-bronze.com/

The latest price of 1KG gold plated tungsten bar is USD480.00/PC on July 9, 2024, EXW XIAMEN, CHINA.

What Is Tungsten Gold Plated Bar?

Tungsten gold plated bar is not the real gold. It is made of tungsten alloy bar inner and coated with coated with a layer of gold on its surface. It turns to be alike the gold color after the gold plating process, but the price for tungsten gold is much cheaper than the real gold.

As its high density almost the same to that for the real gold, it can be used as gold substitution for gifts and souvenirs. Besides, tungsten alloy bar, brick, coin without gold plating usually has a natural surface with its unique metallic luster, which is clear and textured. This kind of tungsten gold plated products becomes more and more popular among the youths. The main advantages of tungsten gold plated are high-density, wearing resistant and corrosion resistant.

More product details please visit:http://t.tungsten-alloy.com/index.html

The latest price of 97%W Ø7.93x52mm tungsten alloy dart billet is USD4.70/PC on July 9, 2024, EXW XIAMEN, CHINA.

What Are Tungsten Dart Billets?

Tungsten is used in dart production because of its high weight to volume ratio. The higher percentage of tungsten used to make a dart which is the slimmer and sleeker. Tungsten dart billets are the rods used for making dart barrels. The standard material for barrel is tungsten heavy alloy, and barrel forms the main part of a dart (mainly used in sports).

Advantages of Tungsten Dart Billets?

Tungsten alloy has many special properties, such as small size with high density, high melting point, high hardness, excellent wear resistance, high ultimate tensile strength, good extension, heat resistant, good thermal stability, easy processing, corrosion resistance, good shock resistance, high radiation absorption capacity, excellent impact and crack resistance.

Regular Sizes of Tungsten Dart Billets?

The weights of billets are varied from different tungsten contents and rod sizes. Popularly 70~90% tungsten dart billets are used for making both soft-tip and steel tip tungsten barrels, ranging from 14~18 gram and 18~40 gram respectively, and sometimes, 65% and 95~97% tungsten are offered following customers’ specific request.

More product details please visit:http://www.chinadart.com/tungsten_alloy_dart_billet.html

The latest price of 28.4G tungsten putty for pinewood derby cars is USD2.80/PC on July 9, 2024, EXW XIAMEN, CHINA.

What is Tungsten Putty?

Tungsten putty is a non-hardening, moldable material made from tungsten powder and a polymer binder. Under normal conditions, it will not harden. The density of tungsten putty is similar to that of lead, but can be adjusted accordingly, for example, 7.0g/cm3, 8.5-9.5g/cm3 or even higher.

What Is Tungsten Putty Used for?

Tungsten Putty can be easily used for fine-tuning the weight of pinewood derby cars. Simply pinch off a piece of the putty, knead it until it is pliable, and press the putty into a cavity or hole in the car. If the car is too heavy, use a small screwdriver to remove some of the tungsten putty. In addition, it can be used by anglers to pin their end tackle to the lake bed when fishing. A small amount of putty moulded on your hook length and swivel can help aid in complete concealment of your rig and help prevent spooking of the wariest of carp.

More product details please visit:http://www.tungsten-putty.com/index.html

The latest price of WC50Cu50 5x100x100mm tungsten carbide copper plate is USD68.00/PC on July 9, 2024, EXW XIAMEN, CHINA.

What is Tungsten Copper Alloy?

Tungsten-copper alloys are pseudo-alloys of copper and the refractory metal tungsten. Since copper and tungsten are immiscible, the material consists of different particles of one metal dispersed in a matrix of another metal. As a result, the microstructure is a metal matrix composite rather than a true alloy.

Characteristics of Tungsten Copper Alloy

It combines the properties of two metals to form a material that is heat, ablation resistant, highly thermally and electrically conductive, and easy to process. It is also resistant to arc corrosion, mechanical wear and contact welding. Parts are made from tungsten copper alloy by pressing tungsten particles into the desired shape, sintering the compacted part, and finally infiltrating it with molten copper.

Tungsten Copper Alloy Grades

Common grades of this alloy contain 5% copper to 50% copper with tungsten in balance. The typical properties of an alloy depend on its composition. Alloys with less copper have higher density, higher hardness, and higher resistivity. Typical densities are 17.3 g/cm3 for WCu10 alloy and 12.2 g/cm3 for WCu50 alloy. WCu10 alloy has higher hardness and resistivity than WCu50 alloy of 260 HB kgf/mm2 and 6.5 µΩ.cm.

Tungsten Copper Alloy Applications

Tungsten copper products are meeting the increasing demands of high-tech applications, such as major electronic equipment, safety equipment, aviation and power generation, etc. Sheets and plates made from copper-tungsten alloys are used in many industries, including aerospace and power generation. Heat exchanger and cooler elements in electronic equipment as well as passive heat sinks, arches and vacuum contactors in high current equipment are made of this alloy.

More product details please visit:http://www.tungsten-copper.com/index.html

The latest price of Ø120xØ100x200mm high purity tungsten crucible is USD1,950.00/PC on July 9, 2024, EXW XIAMEN, CHINA.

What is Tungsten Crucible?

Tungsten crucible is a high-temperature resistant container made of tungsten that is used to hold liquid materials that are elevated to high temperatures, often for material testing and evaluation purposes. Its regular shape is cylindrical, and the diameter is between 10mm and 500mm. The height is between 10mm and 750mm, and the wall thickness is between 8mm and 20mm.

Characteristics of Tungsten Crucible

The characteristics of tungsten crucible include high specific gravity, high melting point, high boiling point, low vapor pressure, small evaporation rate, low thermal expansion coefficient, corrosion resistance, wear resistance, good thermal conductivity, etc. According to different production processes, tungsten crucibles can be formed by forged, sintered, welded, punched and rotary pressed. Its density ranges from 18.5g/cm3 to 19.2g/cm3.

How to Produce Tungsten Crucible?

The producing processes of tungsten crucible include mixing powders, isostatic pressing, forming, sintering and machining. Four different tungsten powders with particle size in the range of 1.0~5.0um are used for ingredients; the isostatic pressure is about 200MPa, and the holding time is about 7 minutes; the sintering temperature is about 2300°C, and the sintering time is about 7 hours.

Tungsten Crucible Applications

As a high-temperature resistant container, tungsten crucible is mainly used in rare earth metal smelting furnace, quartz glass melting furnace, induction furnace heating element, single crystal furnace high temperature container, sapphire single crystal growth furnace, high temperature vacuum furnace and other industrial furnaces. Its working temperature is generally above 2000°C. Normally, tungsten crucibles should no internal cracks, have accurate dimensions, and smooth inner and outer walls.

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

The latest price of φ0.030mm tungsten diamond wire is USD 3.40/KM on July 9, 2024, EXW XIAMEN, CHINA.

What Is Tungsten Wire for Diamond Wire Busbar?

Tungsten wire for diamond wire busbar, also known as tungsten diamond wire, tungsten wire rope or tungsten-based diamond wire, is a kind of diamond wire with pure tungsten wire or doped tungsten wire as the busbar. It is widely used in wire cutting industry because of its excellent cutting effect.

Advantages of Tungsten Wire as Diamond Wire Busbar

Diamond wire is one of the important tools for cutting silicon wafers that are one of the core components of photovoltaic equipment. The bus bar in the wire is mostly made of carbon steel wire, but studies have shown that fine tungsten wire can replace carbon steel wire thanks to its good characteristics of high tensile strength, high rigidity, good toughness, low torsional stress, fatigue resistance and corrosion resistance.

The purpose of replacing with this metal wire is to deal with the problem of thin wire. At the same time, this wire’s fracture force is proportional to the wire diameter and tensile strength. At present, the wire diameter of high carbon steel wire (busbar) is close to the limit. Fine tungsten wire has stronger tensile strength and can make the wire diameter thinner under the same breaking force.

Compared with made of high carbon steel wire, the wire with tungsten wire as the busbar has a smaller diameter, higher breaking force and better durability, so it is more suitable for application in the future photovoltaic Industry.

Applications of Tungsten Wire as Diamond Wire Busbar

It is is mainly used for cutting and processing highly hard and brittle materials, such as crystalline silicon, sapphire, cemented carbide, optical glass, ceramics, magnetic materials, stone, etc.

More product details please visit:http://news.chinatungsten.com/en/tungsten-product-news/149141-tpn-11431.html

The latest price of φ0.76x3x50mm tungsten filament coil is USD 1.20/PC on July 9, 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 July 9, 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