Tungsten Dart Billet,Tungsten Dart Price

100% Tungsten Dart Barrel

Details: Category: Tungsten Information; Published on Wednesday, 08 July 2015 18:44; Written by yingying; Hits: 438

It is generally known that tungsten dart barrel is the main part of dart. Nowadays, tungsten became the standard material and widely used in dart barrel, for it has proportion of 19.3(when temperature is 20 degrees).That means put a high-density material into a small dimension. By the way, it is extraordinary durable, and could be processed.
Because of the special character of tungsten, it can be so difficult to produce with 100% tungsten. In fact, on the market, so called 100% tungsten dart is made of tungsten alloy. With the same weight, tungsten dart is thinner than brass dart. For all this special characters, as a result, tungsten has taken the place of brass and become the most popular material. tungsten dart billet through knurling and carving and finally became the stunning tungsten dart barrel ,and the weight is changing by size and tungsten content.

tungsten dart barrel

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Dipolar Line Broadening in Gadolinium-Doped Calcium Tungstate

Details: Category: Tungsten Information; Published on Wednesday, 08 July 2015 17:36; Written by xinyi; Hits: 368

Electron spin resonance linewidths of Gd7/2 in single crystal calcium tungstate (CaWO4) were examined experimentally and theoretically for Gd concentrations up to 0.05%, at the range over which single site occupation by gadolinium was maintained. The linewidths expressed as widths between points of maximum slope on derivative spectra, lay between 0.3 and 1.5 mT over the angular ranges 0° < θ < 90° and 0 < φ < 90° explored. There is good agreement between the form of the angular variation of linewidth and calculation based on dipolar broadening theory. Quantitatively, however, the predicted values are about five time larger than the observed linewidths; this difference may be due to exchange narrowing.

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Tungsten Syringe Shielding for Single Photon Emission Computed Tomography

Details: Category: Tungsten Information; Published on Wednesday, 08 July 2015 16:59; Written by wenjing; Hits: 389

Single photon emission computed tomography (SPECT, or less commonly, SPET) is a nuclear medicine tomographicimaging technique using gamma rays. It is very similar to conventional nuclear medicine planar imaging using a gamma camera. Due to its high density, excellent absorption behaviour against radiation and environmental friendly characteristics, tungsten alloy can be widely used in single photon emission computed tomography (SPECT) utilize radioactive materials injected as tungsten syringe shield. 2 mm solid tungsten flange helps syringe shield the hand when withdrawing liquid from a vial. Flange is easily removed to allow transition from drawing dose to patient injection. 9 mm thick glass-5.2g/cc gives the greatest protection of any glass in any syringe shield and syringe shield is easily replaced. Twist-turn and the syringe is held firmly.

tugsnten syringe shield

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Microhardness Studies of Nanocrystalline Calcium Tungstate

Details: Category: Tungsten Information; Published on Wednesday, 08 July 2015 17:10; Written by xinyi; Hits: 381

Nanocrystals of calcium tungstate (CaWO₄) of three different grain sizes were synthesized through chemical precipitation technique and the grain sizes and crystal structure were determined using the broadening of X-ray diffraction patterns and transmission electron microscopy. The microhardness of compacted pellets of nanocrystalline calcium tungstate (CaWO₄) with different grain sizes were measured using a Vickers microhardness tester for various applied loads ranging from 0.049 N to 1.96 N. The values of microhardness showed significant reverse indentation size effect at low indentation loads. The microhardness data obtained for samples of different grain sizes showed grain size dependent strengthening obeying normal Hall-Petch relation. The dependence of compacting pressure and annealing temperature on microhardness of the nanostructured sample with grain size of 13 nm were also studied. The samples showed significant increase in microhardness as the compacting pressure and annealing time were increased.

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Advantages of Using Tungsten Collimators

Details: Category: Tungsten Information; Published on Wednesday, 08 July 2015 16:56; Written by wenjing; Hits: 347

Tungsten collimators are made up of ground breaking components of tungsten alloy X-ray targets. The advantages of using tungsten collimators:

Due to tungsten alloy is environmental friendly, tungsten collimator is one of the safest devices to be used on a job site which definitely reduces extra radiations.
The extra or the scattered radiation around the film is automatically reduced which increases the quality of radiography shots.
Safer and more understandable operation for radiographers.
Tungsten alloy itself is more efficient shielding material than lead; it is easy to handle and can be used even without a license.
One of its properties which are also ideal for Industrial use is that it does not spark.

tungsten collimator

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