Spherical tungsten powder is a type of tungsten that has been specifically designed to print 3D. This powder is meticulously made to form the shape of a spherical that is why each powder particle being extremely homogeneous and small in size, allowing for excellent printing results.
What is tungsten powder?
Tungsten powder is a form of powdered metallic tungsten, utilized as a raw material for the preparation of tungsten-processed substances such as alloys, tungsten products and. It is a gray-black metal with a metallic Lustre (body-centred cubic crystal). Melting point 3400. Boiling points 5555. The tungsten’s hardness is the most hard of the metals 200 mesh tungsten powder. The hardest tungsten rod is 200250 and it is the hardest tungsten rod that has been spun after the spinning hammer spins is 350400. It is soluble within the mix acid of nitric acid as well as hydrofluoric acid. It melts in the combination of sodium hydroxide and carbonate. A little soluble in nitric acid and sulfuric acid as well as aqua regia, insoluble in hydrofluoric acid and water. potassium hydroxide. Tungsten has two varieties A and B. At normal temperature and atmospheric pressure, type A is a solid cylindrical structure that is body-centered. Type B tungsten is able to be found in the presence of oxygen. It is stable to 630degC, and then transforms to a tungsten at temperatures above 630degC. This procedure is unreversible.
Difference between tungsten powder and spherical tungsten powder
Tungsten powder and tungsten spherical powder are both powder forms of tungsten, but they have obvious differences in morphology, particle size and application.
Morphology
Tungsten powder is usually in granular form, while spherical tungsten powder is a spherical powder after special processing. This spherical shape allows tungsten powder to flow and fill better in applications such as 3D printing, providing more uniform printing results.
Particle Size
While tungsten powders have relatively large particle sizes, spherical tungsten powders have very fine particle sizes, usually in the nanometer range. This fine particle size allows Spherical Tungsten Powder to fit better into the nozzle of the 3D printer, providing finer print details. At the same time, the fine particles are also able to fill the print bed, increasing the density and strength of the printed part.
Applications
Tungsten powder has a wide range of applications in many fields, such as light bulb manufacturing, electronics, and mechanical parts. In these applications, tungsten powder is often used as a filler or alloying element. Spherical tungsten powder, on the other hand, is particularly suitable for areas such as 3D printing, where it is capable of creating more complex, high-precision parts and devices due to its excellent flowability, filling effect and printability.
How do you prepare tungsten powder?
It is made by the hydrocarbon reduction on tungsten trioxide, or ammonium paratungstate. The process of making the tungsten powder through hydrogen reduction can be divided into two phases one stage in the first stage, at temperatures of 500-700degC, tungsten oxide is reduced to tungsten oxide; in the second phase, at 700-900°C at which point tungsten dioxide will be reduced to the tungsten powder. The reduction reaction is typically performed by the form of a tube or rotary furnace.
The efficiency of tungsten reduced powder (such as quality as well as particle size, composition, size, etc.) mostly depends in the method of reduction. In the process of reducing tungsten in an oven tube, the primary factors that affect the rate of reduction are temperatures of reduction, amount of tungsten oxide into the burner vessel and the speed of movement that the vessel is in, as well as the rate of flow of hydrogen, and the amount of moisture in hydrogen. As the temperatures of reduction, size of tungsten powder gets more coarse.
Production of tungsten powder along with the method of hydrogen reduction, there is also a tungsten oxide carbon reduction methods employed in the beginning The reduction temperature is greater than 1050 degrees Celsius . The purity of the tungsten oxide powder that is produced using this method is poor. Furthermore, with the use of calcium, aluminum zinc, and various other reduction processes of tungsten oxide research is currently underway. For specific applications that require ultra-fine, ultrapure particle size of tungsten powder the development of the tungsten chloride hydrogen reduction process The tungsten powder particle size is less than 0.05mm.
Industrial production can be achieved through the reduction of tungsten trioxide by hydrogen, or ammonium partungstate is treated with acid and then tungsten trioxide can be made by maturation decomposition and then reduced using hydrogen.
Hydrogen reduction using tungsten trioxide hydrogen reduction can be accomplished in two steps The first stage is when tungsten trioxide heating to 550-800 , using hydrogen reduction. The next stage of reduction takes place between 650 and 850 the tungsten powder is finished.
Also, it is possible to reduce ammonium paratungstate into blue tungsten oxide (blue tungsten) initially by hydrogen, or, if not by hydrogen then reduce it back to tungsten by hydrogen. The size and content of the tungsten powder are an important quality indicator of the tungsten powder. The reduction process is performed through a tube or the rotary furnace.
Spherical tungsten powder has the following advantages:
Spherical shape: The spherical shape allows the tungsten powder to better fill the print bed during the printing process, providing a more uniform print result. Compared with traditional granular tungsten powder, spherical tungsten powder can better adapt to the 3D printing head and provide a smoother printing process.
Fine particle size: The fine particle size allows the tungsten powder to better fit into the nozzle of the 3D printer, providing finer print details. The fine particles also fill the print bed better, increasing the density and strength of the printed part.
Uniform particle distribution: Uniform particle distribution reduces clogging and defects during the printing process and improves print success. In traditional granular tungsten powders, the particle distribution is usually not uniform enough, which can lead to clogging or defects during the printing process. The uniform particle distribution of spherical tungsten powder can effectively solve this problem.
High purity: High-purity tungsten powder can provide better print performance and higher print quality. In some applications, it is necessary to use high-purity material for printing to ensure the quality and performance of parts.
Spherical Tungsten Powder Application Areas
Spherical tungsten powder has a wide range of applications, including but not limited to the following areas:
Aerospace: Spherical tungsten powder can be used to manufacture high-performance parts such as aircraft structural components and engine parts. In these applications, the high strength, high density and high purity characteristics of tungsten powder can provide better printing performance and quality.
Automotive industry: Spherical tungsten is used for the production of parts for automobiles, including chassis parts, engine components and other parts. The strong durability and resistance to temperature of tungsten powder will enhance printing quality and performance.
Medical field Spherical tungsten can be used to create medical devices like dental implants, surgical instruments and others. The high biocompatibility as well as the high strength of tungsten powder could enhance print quality and printing performance.
Architecture: Spherical tungsten powder can be used to manufacture architectural models and components. The high strength and wear-resistant properties of tungsten powder can provide better printing performance and quality.
Electronics: Spherical tungsten powder can be used to manufacture electronic devices, such as semiconductor devices, circuit boards and so on. The high thermal and electrical conductivity of tungsten powder can provide better printing performance and quality.
It should be noted that using spherical tungsten powder for 3D printing requires a certain level of skill and experience. If you are a beginner, it is recommended to practice with some more accessible 3D printing materials first. At the same time, using tungsten powder for 3D printing also requires special attention to safety, as tungsten is a high-density metal that can easily cause harm to the human body. When doing so, be sure to follow the relevant safety regulations and operating procedures.
Spherical Tungsten Powder Supplier
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