Beside the milling cutters, the other two main types of tungsten carbide tipped tools are listed as follows,



Tool Bits

Tool bits are referred to the non-rotary cutting tools which make effort in the devices like shapers, planers and metal lathes. In the practice, tool bits are also addressed as single point cutting tools. In addition, The cutting edge is ground to suit a particular machining operation and may be resharpened or reshaped as needed.

Saw Blades

Saw blades are the cutting tools comprise a hard blade and several cutting edges along the cutting site of the saw, which own ability to cut through materials such as, wood, plywood, laminated board, plastic, grass, aluminum and some other metals. The saw blade's teeth are welded with small pieces of sharp tungsten carbide block.


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Tungsten carbide removable cutting tips are referred to the cutting tips that are not welded or brazed to the tool body which could flip or rotate independently. They also addressed as inserts.

The main advantages regarded to this kind of cutting tips include,

Time saving in manufacturing as the fresh cutting edges are able to perform periodically without set up changes, tool grinding and update new values in the operation program.

It is much easier for the manufacturer to produce the small tungsten carbide inserts instead of producing the whole solid tool from the the same material. In addition the cost is less if only the cutting edge’s material is tungsten carbide, and the rest of the tool made from other cheaper material.

The hardness of the tungsten carbide removable cutting tips offer a longer working life for the cutting tools.


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There two kinds of tungsten collimators, tungsten panoramic collimators and tungsten directional collimators. Collimators contain and direct the beam of radiation during exposure. This results in improved radiograph quality and safer operating conditions. Tungsten panoramic collimators consist of a stainless steel housing containing two tungsten inserts. Tungsten directional collimators direct the radiation beam from a side port as a 60° conical side throw. A wide range of collimators have been developed to meet the variety of applications and techniques used.

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Nonleaded metal–polymer tungsten and sendust composite can be applied for X-ray shielding as a reliable substitute material for lead. The lamination order of tungsten film and sendust composite film affects the final performance of the laminated composites.Polymer–nonleaded metal tungsten composites had been studied the effects of multilayer structure on X-ray shielding ability. Though the metals were nonleaded, the metal contents were low, and the composite films were thin, the composite films showed favorable X-ray shielding ability due to the uniform dispersion of metal particles in the polymer matrix and the flake alignment of tungsten. This means that multi-layered particles can effectively absorb the penetrating photons and they fill the pin holes in the composite. More uniformly aligned tungsten shows better shielding effect than randomly oriented lead.

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1、For the mordant, analytical reagents, catalysts, water treatment chemicals, manufacturing fireproof, waterproof material, and phosphorus tungstate, tungsten, boron salts.
2、For the manufacture of tungsten, tungsten acid, tungstate,etc.
3、For the mordant, pigments, dyes, inks.
4、 As a weighting agent for fabric by weavers. This product is used as textile assistants. And a mixture of tungsten acid, ammonium sulfate, ammonium phosphate and other components used in fiber fire and water. This kind of fibers can be made into fireproof rayon and rayon. It can also be used in tanning leather.
5、As anti-corrosion coating for electroplating.
6、As a co-solvent playing a role in reducing firing temperature and complementary color when introducing enamel pigment.
7、For petroleum and aerospace manufacturing industry, aerospace materials.

 

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Names

IUPAC name   Sodium tungstate

Identifiers

CAS Registry Number   13472-45-2

PubChem       26052

RTECS number     YO7875000

Properties

Chemical formula Na2WO4

Molar mass    293.82 g·mol−1

Appearance    white rhombohedral crystals

Density    4.179 g/cm3 (anhydrous)

3.25 g/cm3 (dihydrate)

Melting point        698 °C (1,288 °F; 971 K)

Solubility in water

57.5 g/100 mL (0 °C)

74.2 g/100 mL (25 °C)

96.9 g/100 mL (100 °C)

Solubility      slightly soluble in ammonia insoluble in alcohol, acid

Structure

Crystal structure   rhombic (anhydrous)

orthorhombic (dihydrate)

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

 

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Metatungstic acid, a polylactic acid, is the only compound that the structure has been identified in a variety of tungsten acids, as colorless crystals. It belongs to 12-tungstophosphoric acid with a simple formula H6 [H2 (W3O10) 4]·nH2O, n is 10 or 23; a density of 3.93 g / cm 3, decomposition at 50 ℃; large solubility for 88.57 g / 100 cm 3 of water (25 ℃). It ‘s transformed from metatungstic acid salt that was an important industrial product developed in late 1970s, mainly as catalyst. Metatungstate was prepared by ammonium paratungstate, may also be obtained from white microcrystalline powdery tungstic acid. Many other metatungstic acid salt, including various metal salts and more bicarbonate salts, etc., can be obtained from white microcrystalline powdery tungstic acid directly or indirectly. Paratungstate is another isopolytungstate that the simple formula (NH4) 10 [H2W12O42]·nH2O, made from sodium tungstate solution by ion exchange method, was not able to give the corresponding free acid. Burning ammonium paratungstate can obtain tungsten trioxide without sodium.

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Tungstic acid is insoluble in most acids, but dissolves slightly in hydrochloric acid and is readily soluble in hydrofluoric acid, as is shown in the following table:

It is readily soluble in alkalies.

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Tungsten carbide tipped saw blade is a saw blade used steel made blade as its main body, and with small tips of carbide brazed on to the body. It is claimed that a fine tungsten carbide tipped saw blade will provide a ten to twenty times longer tool life compared to a normal steel tipped saw blade. But it should be noticed that, eventually the tungsten carbide tip do get dull.

Generally, the sharpening techniques of tungsten carbide tipped saw blade are similar to the steel ones, whereas the abrasive is different. For the tungsten carbide tips, as they are extremely hard, the applying abrasive usually is diamond or a carbide abrasive wheel, which hardness could overweight the tungsten carbide tips.
 

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Tungsten carbide trepanning tool is a metal cutting tool usually with one carbide tip, which is suitable for toroidal shape cutting and deep hole boring. It is also used to grooves creating. Generally the key advantages related to using tungsten carbide trepanning tools are comprised as follow,

Less Effort

Compared to the conventional types of drills, tungsten carbide trepanning tool requires less effort. During the drilling processes, as boring through metals needs to create holes and remove all the materials involved in the holes, while trepanning only requires to cut out an annulus.  

Indexable

The indexable ability related to the tungsten carbide trepanning tools refers to the tools are adaptable and versatile, which could generate holes with various types and different diameters.


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