Tungsten carbide tipped tools are the most popular option for stone carving work due to its forged, slotted, and carbide inserts brazed in, which could provide a harder and longer-wearing cutting edge.



Soft stone such as chalk, soapstone, pumice and tufa can be easily carved with found items such as harder stone or in the case of chalk even the fingernail. Limestones and marbles can be worked using abrasives and simple iron tools. Granite, basalt and some metamorphic stone is difficult to carve even with iron or steel tools; usually tungsten carbide tipped tools are used, although abrasives still work well. Modern techniques often use abrasives attached to machine tools to cut the stone.


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Tungsten carbide stone carving chisels is used for stone cutting. There is a wide variety of types and styles, including lettering chisels, points, pitching tools, and claw chisels. Chisels in turn may be hand held and hammered or pneumatic powered.

Tungsten carbide stone carving chisels are usually mounted with tungsten carbide-based tip or work surface, which also could be forged, slotted, and carbide inserts brazed in. Because of  its extreme hardness and high resistance to scratching, as well as its brittleness, it is prone to chip, crack, or shatter in stone carving applications.


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The forms of ceramic tile cutters vary from basic manual devices to complex attachments for power tools. Generally they are applied to deal with tiles cutting to a desired size and shape.



Tungsten carbide ceramic tile cutter carries a tungsten carbide scoring wheel, which is designed  as a hand tools to deal with ceramic tiles of medium to soft grades. For the power tools, tungsten carbide blade is mounted to break harder grades of ceramic tiles like fully vitrified porcelain tiles. The glazed surface of the tile is first scored with a tool that carries a hardened metal wheel. Then with a support directly under the score pressure is applied to either side of the cut and the tile snaps along the score. Snapping pressure vary widely, some mass-produced models exerting over 750 kg.


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The Alpha Magnetic Spectrometer (AMS-02) is a large experiment in the International Space Station (ISS) intended to measure primary cosmic ray spectra in space. It sits outside of the station, looking out into space. High-energy particles pass through it, interacting with different detectors on the way.

AMS-02 Transition Radiation Detector (TRD) consists of 20 layers of straw proportional tubes alternating with layer of fiber fleece radiator. The layers are mounted in a stable and light carbon fiber composite honeycomb octagonal support, fixed by an M-structure to the AMS-02 magnet flange. The entire TRD is composed by 328 modules, ranging in length from 1.5 meters up to 2.2, for a total of 5248 straw tungsten alloy tubes. The tube wall is composed of a 72 μm tungsten alloy thick foil and the tungsten alloy sense wires are 30 μm . The tungsten alloy wires are held by the polycarbonate end pieces crimped in Copper-Tellurium blocks.

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For industrial radiography using gamma radiation sources such as Iridium-192 or Cobalt-60, a tungsten alloy collimator (beam limiting device) allows the radiographer to control the exposure of radiation to expose a film and create a radiograph, to inspect materials for defects. A tungsten alloy collimator in this instance is most commonly made of tungsten alloy foils, and is rated according to how many half value tungsten alloy layers it contains, i.e., how many times it reduces undesirable radiation by half. For instance, the thinnest walls on the sides of a 4 HVL tungsten  alloy collimator 13 mm (0.52 in) thick will reduce the intensity of radiation passing through them by 88.5%. The shape of these collimators allows emitted radiation to travel freely toward the specimen and the x-ray film, while blocking most of the radiation that is emitted in undesirable directions such as toward workers.

The photograph below shows tungsten alloy materials to manufacture collimator.

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Tungsten alloy collimators (beam limiting devices) are used in linear accelerators used for radiotherapy treatments. Tungsten alloy collimators help to shape the beam of radiation emerging from the machine and can limit the maximum field size of a beam.

The treatment head of a linear accelerator consists of both a primary and secondary collimator. The primary collimator is positioned after the electron beam has reached a vertical orientation. When using photons, it is placed after the beam has passed through the X-ray target. The secondary collimator is positioned after either a flattening filter (for photon therapy) or a scattering foil (for electron therapy). The secondary collimator consists of two jaws which can be moved to either enlarge or minimize the size of the treatment field.

New systems involving tungsten alloy multileaf collimators (MLCs) are used to further shape a beam to localize treatment fields in radiotherapy. Tungsten alloy multileaf collimators consist of approximately 50–120 leaves of tungsten alloy collimator plates which slide into place to form the desired field shape.

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There are four stages of coated carbide tools development: the late 1960s, early 1970s, the mid-1970s and the present stage.

The late 1960s is the beginning stage of coated carbide tools development stage. In this period, coated carbide tools based on TiC coated carbide tools, The second generation of coated carbide tools approximately appear in the early 1970s, when a number of improvements were made to the TiC coating, control coating and the substrate between large brittle n phase thickness, and the development of TiN, Al2O3, such as single coat and the foregoing two-coat and three-coat, such as TiC-TiN, TiC-Al2O3 and the like. The third generation of  coated carbide tools was developed in the mid-1970s, in addition to the above several coating materials, also tested the new coating materials and coating more than three coating and the development of the coating material matching special carbide substrate, the strength properties of the coating blade has been further improved. At present, development of coated carbide tools focuse on new coating materials, including diamond, cubic boron nitride and carbon nitride coated tools, etc.

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Ultra-fine grain tungsten carbide cutting tools is a kind of high hardness, high strength and high wear resistance of tungsten carbide cutting tools, which has high strength of alloy high and high hardness of high-speed steel. Ultra-fine grain tungsten carbide cutting tools is now widely used in modern manufacturing.

One aspect of ultra-fine grain tungsten carbide cutting tools application status is that because a clear advantage in terms of modern high-speed cutting difficult materials, titanium, coating materials, hardened steel, ultra-fine grain tungsten carbide cutting tools is now made of a rod tools, processing integrated circuit board micro drill, dot matrix printer needle, the overall processing tools, milling cutters, drills, woodworking tools and precision molds.

Another aspect of ultra-fine grain tungsten carbide cutting tools application status is that ultra-fine grain tungsten carbide cutting tools can also be used to produce small-size solid tool for high-speed machining hole, gear and tapping may be at a higher speed machining titanium and its alloys and superalloys superalloy. On the other hand, high strength, high hardness of ultra-fine grain tungsten carbide cutting tools can also be made of solid carbide end mills, in order to ensure its center of cutting edge.

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According to the tungsten carbide cutting tools market forecast made by China's machine tool industry association tools branch,in the next five years, China's market of tungsten carbide cutting tools will remain higher than the overall GDP growth rate, a conservative forecast of 10% -15%; high-end carbide With the industrial upgrading of the tool and to further improve the level of equipment, will continue to maintain high growth, it is expected to grow more than 15%.

In addition, according to China's "tool industry," second Five Year Plan "(draft recommendation)," an explicit proposal to significantly improve efficiency of domestic tungsten carbide cutting tools in manufacturing high-end market share, targets the high-end market share to From around the current 15% to 30% -40%; and conceive again 2-3 five-year plan period, so that the localization rate gradually increased to the average level of developed countries, 60% -70%. To accomplish this goal, the localization rate of average annual growth rate will reach 20%. It can make another tungsten carbide cutting tools market forecast: production of tungsten carbide cutting tools will also reach a new historical level during"Twelve Five" period.


 

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Generally the selection of the insert shape of a tungsten carbide cutting tool is depends on the work material, the required production rate and the condition of the machine tool. And the shape of a tungsten carbide insert is specified by the first letter of the insert designation, which include diamond, triangle ,square,octagon, round and trigon.



Furthermore, the shape of an insert largely determines the carbide tool ‘s strength, quantity of cutting edges and the total cost. It is claimed that when the insert becomes stronger and dissipates heat more rapidly as its included angle is increased, so there’s a trade-off between strength and versatility during the insert shape selection. For instance, round inserts is an ideal option for roughing operation considering it could offer maximum edge strength, while the square inserts are popular in general purpose due to its good edge strength and bunch of cutting edges.


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