By Dr.Qian from Guizhou University of Finance and Eco | 15 July 2020 | 0 Comments
Multiple applications of tungsten carbide powder
What's tungsten carbide?
Tungsten carbide is made of chemically bonded tungsten and carbide. Its superior hardness enables it to replace steel and other metallic alloys in a selection of applications. Simply speaking， tungsten carbide is frequently called carbide. In its maximum simple form, it's far a satisfactory gray powder, but it could be pressed and fashioned into shapes for use in business equipment, tools, abrasives, and earrings. Tungsten carbide is approximately four times stiffer than metallic, with a younger's modulus of about 550 GPa, and is an awful lot denser than metallic or titanium. it's miles comparable with corundum (a-Al2O3) in hardness and can simplest be polished and completed with diamond wheels and compounds.
What are the tungsten carbide properties and its density?
There are two properly-characterized compounds of tungsten and carbon, WC and tungsten semicarbide, W2C. Each compounds can be found in coatings and the proportions can depend on the coating approach. At excessive temperatures WC decomposes to tungsten and carbon and this may occur in the course of high-temperature thermal spray, e.g., in excessive velocity oxygen gas (HVOF) and excessive strength plasma (HEP) techniques. Oxidation of WC starts at 500–six hundred °C (932–1,112 °F). It reacts with fluorine fuel at room temperature and chlorine above four hundred °C (752 °F). Finely powdered WC oxidizes without difficulty in hydrogen peroxide aqueous solutions. At high temperatures and pressures it reacts with aqueous sodium carbonate forming sodium tungstate, a manner used for recuperation of scrap cemented carbide. Tungsten carbide has a high melting point at 2,870 °C (five,two hundred °F), a boiling point of 6,000 °C (10,830 °F) whilst below a stress equal to 1 preferred ecosystem (a hundred kPa), a thermal conductivity of a hundred and ten W·m−1·k−1, and a coefficient of thermal expansion of five.5 µm·m−1·ok−1. Tungsten carbide is extremely hard, ranking approximately nine on Mohs scale, and with a Vickers quantity of round 2600. It has a young's modulus of approximately 530–seven hundred GPa, a bulk modulus of 630–655 GPa, and a shear modulus of 274 GPa. It has an remaining tensile strength of 344 MPa, an remaining compression power of about 2.7 GPa and a Poisson's ratio of zero.31. the speed of a longitudinal wave (the speed of sound) via a thin rod of tungsten carbide is 6220 m/s.Tungsten carbide's low electric resistivity of about zero.2 µΩ·m is comparable with that of some metals. WC is quite simply wetted through each molten nickel and cobalt. investigation of the section diagram of the W-C-Co gadget indicates that WC and Co form a pseudo binary eutectic. The phase diagram also indicates that there are so-called η -carbides with composition that can be formed and the brittleness of these phases makes manage of the carbon content material in WC-Co cemented carbides important.
Is tungsten carbide magnetic?
Neither WC nor WC-Co is magnetic and maximum of the time, users don’t must fear about this. But WC-Co can be magnetized and shows some magnetic belongings
Multiple usages of tungsten carbide.
1) device gear- Carbide cutting surfaces are often used for machining via substances along with carbon or stainless-steel, in addition to in conditions where different gear would put on away, which includes excessive-amount production runs. Most of the time, carbide will depart a better end at the element, and allow faster machining. Carbide equipment can also withstand better temperatures than widespread high velocity metal equipment. The cloth is typically known as cemented carbide, hard metal or tungsten-carbide cobalt: it's a steel matrix composite where tungsten carbide particles are the aggregate and steel cobalt serves as the matrix.
2) army
a) Tungsten carbide is frequently used in armor-piercing ammunition, mainly where depleted uranium is not to be had or not politically appropriate.
b) Tungsten carbide ammunition can be of the sabot type (a big arrow surrounded by using a discarding push cylinder) or a subcaliber ammunition, wherein copper or other fairly gentle material is used to encase the tough penetrating middle, the 2 parts being separated only on impact. The latter is greater common in small-quality fingers, whilst sabots are usually reserved for artillery use.
c) Tungsten carbide is also an effective neutron reflector and as such turned into used for the duration of early investigations into nuclear chain reactions, specially for guns.
3) sports
a) Hard carbides, especially tungsten carbide, are utilized by athletes, typically on poles which impact hard surfaces. Trekking poles utilized by many hikers for stability and to reduce stress on leg joints, typically use carbide suggestions in an effort to benefit traction when located on difficult surfaces (like rock); such carbide suggestions last much longer than different types of hints.
b) At the same time as ski pole recommendations are normally now not made from carbide, due to the fact they do not want to be particularly hard even to interrupt via layers of ice and are utilized by many skiers to teach during heat weather months.
c) Sharpened carbide tipped spikes (known as studs) can be inserted into the pressure tracks of snowmobiles. Those studs beautify traction on icy surfaces. Longer v-formed segments suit into grooved rods known as put on rods underneath each snowmobile ski. The highly sharp carbide edges beautify steering on tougher icy surfaces. The carbide tips and segments lessen wear encountered when the snowmobile must pass roads and different abrasive surfaces.
d) Some tire producers, including Nokian and Schwalbe, provide bicycle tires with tungsten carbide studs for better traction on ice. Those are typically preferred over metal studs due to their wear resistance.
4)Domestics
a）Tungsten carbide is occasionally used because the rotating ball inside the hints of ballpoint pens to disperse ink in the course of writing.
b) Tungsten carbide can now be discovered within the inventory of a few jewelers, maximum appreciably as the primary cloth in men's wedding bands. While used on this application the bands appear with a lustrous hue frequently buffed to a reflect finish. The color is more similar to that of hematite than to that of platinum. The end is exceptionally immune to scratches and scuffs, protecting its reflect-like shine for years, although many jewelers at the moment are able to inlay treasured metals, woods, and different materials into tungsten carbide earrings, which might not be as scratch-resistant as the tungsten carbide quantities of the jewelry.
c) A common misconception held regarding tungsten carbide jewelry is that they can not be removed within the direction of emergency medical treatment, requiring the finger to be removed as a substitute. Emergency rooms and plenty of full-carrier earrings restore stores are prepared with jewelers' saws which could reduce thru tungsten carbide jewelry with out injuring the hand or finger. An simpler way to put off tungsten carbide rings is to use a tool along with vice grip style locking pliers.
e）Packaging
Jars, pails, drums, multiply paper bags, bulk luggage and fiberboard bins.
TRUNNANO (Luoyang Trunnano Tech Co., Ltd ) is a professional Tungsten carbide manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality Tungsten carbide, please feel free to contact us and send an inquiry.
Tungsten carbide is made of chemically bonded tungsten and carbide. Its superior hardness enables it to replace steel and other metallic alloys in a selection of applications. Simply speaking， tungsten carbide is frequently called carbide. In its maximum simple form, it's far a satisfactory gray powder, but it could be pressed and fashioned into shapes for use in business equipment, tools, abrasives, and earrings. Tungsten carbide is approximately four times stiffer than metallic, with a younger's modulus of about 550 GPa, and is an awful lot denser than metallic or titanium. it's miles comparable with corundum (a-Al2O3) in hardness and can simplest be polished and completed with diamond wheels and compounds.
What are the tungsten carbide properties and its density?
There are two properly-characterized compounds of tungsten and carbon, WC and tungsten semicarbide, W2C. Each compounds can be found in coatings and the proportions can depend on the coating approach. At excessive temperatures WC decomposes to tungsten and carbon and this may occur in the course of high-temperature thermal spray, e.g., in excessive velocity oxygen gas (HVOF) and excessive strength plasma (HEP) techniques. Oxidation of WC starts at 500–six hundred °C (932–1,112 °F). It reacts with fluorine fuel at room temperature and chlorine above four hundred °C (752 °F). Finely powdered WC oxidizes without difficulty in hydrogen peroxide aqueous solutions. At high temperatures and pressures it reacts with aqueous sodium carbonate forming sodium tungstate, a manner used for recuperation of scrap cemented carbide. Tungsten carbide has a high melting point at 2,870 °C (five,two hundred °F), a boiling point of 6,000 °C (10,830 °F) whilst below a stress equal to 1 preferred ecosystem (a hundred kPa), a thermal conductivity of a hundred and ten W·m−1·k−1, and a coefficient of thermal expansion of five.5 µm·m−1·ok−1. Tungsten carbide is extremely hard, ranking approximately nine on Mohs scale, and with a Vickers quantity of round 2600. It has a young's modulus of approximately 530–seven hundred GPa, a bulk modulus of 630–655 GPa, and a shear modulus of 274 GPa. It has an remaining tensile strength of 344 MPa, an remaining compression power of about 2.7 GPa and a Poisson's ratio of zero.31. the speed of a longitudinal wave (the speed of sound) via a thin rod of tungsten carbide is 6220 m/s.Tungsten carbide's low electric resistivity of about zero.2 µΩ·m is comparable with that of some metals. WC is quite simply wetted through each molten nickel and cobalt. investigation of the section diagram of the W-C-Co gadget indicates that WC and Co form a pseudo binary eutectic. The phase diagram also indicates that there are so-called η -carbides with composition that can be formed and the brittleness of these phases makes manage of the carbon content material in WC-Co cemented carbides important.
Is tungsten carbide magnetic?
Neither WC nor WC-Co is magnetic and maximum of the time, users don’t must fear about this. But WC-Co can be magnetized and shows some magnetic belongings
Multiple usages of tungsten carbide.
1) device gear- Carbide cutting surfaces are often used for machining via substances along with carbon or stainless-steel, in addition to in conditions where different gear would put on away, which includes excessive-amount production runs. Most of the time, carbide will depart a better end at the element, and allow faster machining. Carbide equipment can also withstand better temperatures than widespread high velocity metal equipment. The cloth is typically known as cemented carbide, hard metal or tungsten-carbide cobalt: it's a steel matrix composite where tungsten carbide particles are the aggregate and steel cobalt serves as the matrix.
2) army
a) Tungsten carbide is frequently used in armor-piercing ammunition, mainly where depleted uranium is not to be had or not politically appropriate.
b) Tungsten carbide ammunition can be of the sabot type (a big arrow surrounded by using a discarding push cylinder) or a subcaliber ammunition, wherein copper or other fairly gentle material is used to encase the tough penetrating middle, the 2 parts being separated only on impact. The latter is greater common in small-quality fingers, whilst sabots are usually reserved for artillery use.
c) Tungsten carbide is also an effective neutron reflector and as such turned into used for the duration of early investigations into nuclear chain reactions, specially for guns.
3) sports
a) Hard carbides, especially tungsten carbide, are utilized by athletes, typically on poles which impact hard surfaces. Trekking poles utilized by many hikers for stability and to reduce stress on leg joints, typically use carbide suggestions in an effort to benefit traction when located on difficult surfaces (like rock); such carbide suggestions last much longer than different types of hints.
b) At the same time as ski pole recommendations are normally now not made from carbide, due to the fact they do not want to be particularly hard even to interrupt via layers of ice and are utilized by many skiers to teach during heat weather months.
c) Sharpened carbide tipped spikes (known as studs) can be inserted into the pressure tracks of snowmobiles. Those studs beautify traction on icy surfaces. Longer v-formed segments suit into grooved rods known as put on rods underneath each snowmobile ski. The highly sharp carbide edges beautify steering on tougher icy surfaces. The carbide tips and segments lessen wear encountered when the snowmobile must pass roads and different abrasive surfaces.
d) Some tire producers, including Nokian and Schwalbe, provide bicycle tires with tungsten carbide studs for better traction on ice. Those are typically preferred over metal studs due to their wear resistance.
4)Domestics
a）Tungsten carbide is occasionally used because the rotating ball inside the hints of ballpoint pens to disperse ink in the course of writing.
b) Tungsten carbide can now be discovered within the inventory of a few jewelers, maximum appreciably as the primary cloth in men's wedding bands. While used on this application the bands appear with a lustrous hue frequently buffed to a reflect finish. The color is more similar to that of hematite than to that of platinum. The end is exceptionally immune to scratches and scuffs, protecting its reflect-like shine for years, although many jewelers at the moment are able to inlay treasured metals, woods, and different materials into tungsten carbide earrings, which might not be as scratch-resistant as the tungsten carbide quantities of the jewelry.
c) A common misconception held regarding tungsten carbide jewelry is that they can not be removed within the direction of emergency medical treatment, requiring the finger to be removed as a substitute. Emergency rooms and plenty of full-carrier earrings restore stores are prepared with jewelers' saws which could reduce thru tungsten carbide jewelry with out injuring the hand or finger. An simpler way to put off tungsten carbide rings is to use a tool along with vice grip style locking pliers.
e）Packaging
Jars, pails, drums, multiply paper bags, bulk luggage and fiberboard bins.
TRUNNANO (Luoyang Trunnano Tech Co., Ltd ) is a professional Tungsten carbide manufacturer with over 12 years experience in chemical products research and development. If you are looking for high quality Tungsten carbide, please feel free to contact us and send an inquiry.
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