Tungsten Polymer Shielding Applications

Tungsten polymer shielding applications are so many and could work as lead alternatives as its high density and excellent radiation absorption.

Typical shielding densities approaching twice that of high density lead blankets with similar thickness. The new shielding material, which is tungsten polymer, with highly flexible and can be molded/formed into any shape. Tungsten polymer is a composition of various resins and tungsten powder which are mixed together through special metallurgical technology. The resins may include ABS (acryloynitrile butadiene styrene), PP (polypropylene), PBT (polybutylene terephthalate), PA (polyamide), PU (polyurethane), TPE (thermoplastic elastomer), etc. This material often is considered as lead alternatives.

The main of Tungsten polymer shielding applications:

Maximized the shielding impact, particularly in tight spaces

Offering ease of installing and securing

Integral securing straps included

Greatly increased shielding effectiveness by custom profiling the shield relative to the "hot spot" or radiation source

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Tungsten Radiation Shielding Machining

High-density tungsten radiation shielding is extremely strong and durable (typical hardness ranges from 24-32 RC), so it has a good machinability. Tungsten has low-thermal expansion rate and resistance to breakage and chipping allow you to achieve very close tolerances and hold fine finishes.

There are some main machining processes for tungsten radiation shielding:

Turning: Positive rake tooling is suggested. Seco triangle inserts TPG432 or TPG431 grade 883.

Drilling: Carbide tooling is suggested. Increased clearance angles and automatic feeds are often used to avoid binding and seizing. Carbide drills will give a better tool life.

Milling: Premium uncoated end mills with a regular spiral such as SGS. Insert cutters; use square multi-edge or single edge cutters, such as KC730. Also can use positive rake octagon cutters, such as Seco grade 883.

Cutting: When sawing, use a bi-metal blade; blade pitch should be relative to the thickness of the material. Material can also be cut using high-speed abrasive cutoff wheels.

Threading: when it needs to be assembled, thread is required. Carbide tool is suggested.

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Tungsten is Good Choice for Radiation Shielding

Unlike lead, tungsten material could reduce the size and volume to have the same radiation absorption as lead.

As we know, tungsten is widely used for radioactive source containers, gamma radiography, shields and source holders for oil-well, logging, and industrial instrumentation, because of its high density, much denser then better radiation absorption. Therefore, tungsten is also popular for medical radiation shielding such as used in cancer therapy, as well as syringe protection for radioactive injections, etc.

When you need to direct a specific amount of radiation to a targeted area, tungsten provides the control you need even under extreme, high-heat conditions.

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Tungsten Medical Shielding Application

Tungsten medical shielding application is using as collimator for its high density.

It is the most effective material for shielding and has good machinable, so it is widely usedfor radiation protection in medical areas.

Compared to lead, tungsten is much more environmentally friendly and higher density with smaller capacity of the same weight. It usually used to absorb X-ray and gamma ray by making into the collimator, which is a device that filters a stream of rays so that only those traveling parallel to a specified direction are allowed through. According to the use of lenses, it is not yet possible to focus radiation with such short wavelengths into an image as is routine with electromagnetic radiation at optical or near optical wavelengths. In this way, tungsten medical shielding works as collimator is useful in absorbing neutron, X-ray and gamma-ray.

If you need more information about tungsten medical shielding, you could visit http://www.tungsten-alloy.com/medical-applications-of-tungsten-alloy.html.

Tungsten X-ray Detector

Tungsten X-ray detector is high-purity Ge-detector with 23 crystals arranged in a semi-annular array made by tungsten material. The 23 detector crystals are equally spaced in steps of 8.2°, covering azimuthal angles from 0° to 180°. The detectors are in orthogonal pairs, allowing simultaneous measurement of 11 sets of orthogonal q-vector components. Tungsten is hiding in detector to control the direction of energy dispersive. This design is intended to improve the determination of strain tensor components and permits the measurement of crystallographic texture with a single detector set-up. The multi-element arrangement is also an advantage when the average grain size in the sample is comparable with the beam dimension. In this case, reflections can vanish for certain azimuthal angles. Element 23 at 180° is symmetrical to element 1 at 0° and is used for detector alignment.

If you need more information about tungsten X-ray detector, you could visit http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html.

Tungsten Poly Properties

Tungsten poly properties are mainly as follows:

High density: ≥11.34 g/cm3

Perfect radiation shielding absorption: Tungsten has comparable radiation shielding ability as lead but is much healthier than lead. To date, many manufacturers, especially those in medical industry, are trying to replace lead radiation shielding products with tungsten poly.

Good machinability: can be cut or holed easily with household scissors and formed into shapes with various curved surfaces.

Environmentally friendly: Tungsten poly is totally different from lead, but it is non-toxic, and is recyclable material having no pollution to the environment.

If you need more information about tungsten poly, you could visit http://www.tungsten-alloy.com/tungsten-poly.html.

Tungsten Poly Radiation Shielding Density

Tungsten poly radiation shielding is a definition for tungsten-polymer composites, working as a new substitutes to lead or tungsten-based heavy alloys. Its composite system has two components: tungsten and polymer, which acts as filler and combines high weight percent of tungsten powder. Tungsten poly radiation shielding density is about 13~14 g/cc. As far as we know, the density of lead is about 10.0 g/cc -10.8 g/cc. The density of tungsten-based heavy alloy is about 16 g/cc to 18.5 g/cc. High density tungsten nylon may vary between 10 g/cc to 14 g/cc. Tungsten poly radiation shielding is most popular, as it is quite different from tungsten heavy alloy material, and there is no need to be sintered, but it is usually made by injection molded, which could shorten the delivery time.

If you need more information about tungsten poly, you could visit http://www.tungsten-alloy.com/tungsten-poly.html.