1. Tungsten alloy collimator is one of the most effective devices for reducing the radiation levels on a job site;

2. Tungsten alloy collimator also increases the quality of radiography shots by reducing the scattering radiation around  the film;

3. Tungsten alloy collimator can provide a safer operating conditions for radiographers;

4. Tungsten is a more effective shielding material than lead. It is an easy handle, non-licensed and very effective shielding material;

5. Tungsten alloy collimator does not spark, which makes it a ideal material for plant operations.


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The ski balance weights relate to the technological sector of skis and the associated accessories which allow optimum performance to be achieved in all the sporting disciplines of downhill skiing. More particularly, the product relates to an assembly consisting of ski, ski-boot and associated bindings in which one or more weights of variable size are mounted on the ski in order to achieve better balancing of the ski itself and a reduction in the vibrations of its various parts caused by the fact that the pressure stresses acting on the zone of bearing contact of the ski with the snow change continually and very rapidly as regards the intensity and the point of application.

Skis are known where one or more weights are applied in predefined positions.People has realized that the addition of these weights such as tungsten alloy weights may to a certain extent improve the performance of a ski but, not having thoroughly analyzed the physical problem to be solved, leaves it to the user to determine in each case the size of the weights and their location on the basis of his/her personal sensations.

Basically, hitherto, it had been realized only that the addition of tungsten alloy weights to a ski improves its stability and handling, but no precise criterion had been defined as to where these weights may be precisely and effectively located and the magnitude of said weights.

This point coincides substantially with the point of attachment of the ski-boot on the ski and is located inside the zone of the bindings, in an approximately central position.

People have therefore determined that, in order to reduce the vibrations of the two parts of a ski situated "upstream" and "downstream" of the abovementioned point of attachment, it is necessary to reduce to a minimum the magnitude of the masses of these parts which, as a result of the associated moment of inertia, may amplify the vibrations thereof generated during the abovementioned rotational movements and acting both individually and in combination with each other.

People have therefore deduced that the best result can be obtained by applying one or more tungsten alloy weights (preferably only one, as will be seen below) having a weight and location such as to ensure that the centre of gravity of the ski/ski-boot/bindings assembly coincides with the already mentioned point of attachment.

Thus, because of its small volume, heavy weight, tungsten alloy weights become a popular material for the balance weight.


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Tungsten alloy properties are sensitive to impurity substances, atmosphere and cooling velocity. Impurity substances such as P, S or others segregating on grain boundary will descend anchoring strength on interface so that descend tungsten alloy properties. Improper control of cooling velocity will produce mesophase or make impurity substances segregate on grain boundary.

So, thermal treatment is necessary for sintered tungsten alloy to improve sintered tungsten alloy properties. Thermal treatment contains quenching, rapid cooling, dehydrogenation in atmosphere and surface hardening. It aims at descending the segregation of impurity substances on interface and hydrogen embrittlement, improving tungsten alloy properties or satisfying the requirements for other properties. Utilizing thermal treatment can eliminate hydrogen embrittlement and phosphorous embrittlement, decreasing the segregation of impurity substances on interface and improving boundary strength of tungsten alloy. That will improve strength and elongation of tungsten alloy.


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Density: the density of tungsten alloy radiation shielding is almost 18.6g/cm3 while lead is only 11.34g/cm3, so at the same weights high density heavy alloy can provide the same energy absorption as lead using 1/3 less material. When the weight is certain, more density, and the thickness would be thinner. Tungsten alloy material could be made with thinner thickness but high absorption of radiation in high density. That is why tungsten alloy material is suitable for radiation shielding.

Environmental protection: tungsten alloy radiation shielding is less harmful to our health than lead material of radiation shielding; this is because lead is poisonous and is not good both to our body and the environment, so tungsten alloy is environmental friendly material.


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The type of container used and the safety precautions put in place during transport depend on the type and the amount of nuclear material being transported. For small amounts of nuclear materials which have short half-lives and very low levels of radioactivity, all that is needed is a simple tungsten alloy cardboard box.

For larger amounts of highly radioactive nuclear material such as used nuclear fuel, tungsten alloy cardboard box has been developed capable of remaining intact during and after catastrophic accidents such as being hit by a train (as shown on the right, being in a fire or being submerged in water.


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Compared with traditional radiation shielding material, tungsten alloy radiation cans provide higher radiation absorption. The absorptive capacity of the high-density tungsten alloy is three times than that of lead! And lead, the use of high-density tungsten alloy radiation cans also can help you reduce administration costs, because you do not need to obtain special permits.

Tungsten alloy radiation cans are  very popular with our daily uses both in medical and industry.


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Tungsten rubber slice is combined by tungsten powder and raw flexible magnets through sheet metal technology, all kinds of tungsten rubber slice can be machined according to different uses and requirements.

Tungsten rubber slice has the properties of tungsten and rubber, such as high density, good radiation resistance, easily machined into different types of products, low cost, good ductility, etc. the most important point is that tungsten rubber slice is non-toxic and environmentally friendly, so tungsten rubber slice is the first choice to be the substitute of lead slice and tungsten rubber slice is the best material to make into radiation shielding.


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While lead has traditionally been the metal of choice for x-ray and gamma radiation shielding, lead's long-term negative effects on human health and the environment has encouraged the development of alternative options.

Radiation shielding must be provided anywhere where x-rays are taken. Think of the heavy apron that you wear while the dentist takes x-ray images of your teeth. Although lead is still widely used in medical offices, tungsten shielding is becoming a more commonly used solution.

Formed from tungsten powder and polymer resins, tungsten shielding can be as effective at attenuating (or blocking) radiation as lead and is lighter in weight.


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The penetrating power of radiation has also been put to use in the fight against terrorism. The Homeland Security industry has designed scanners that use gamma radiation to detect objects in cargo containers or airline baggage.

The radioactive sources are very strong and require  tungsten shielding to protect security staff and members of the public from the radiation. A tungsten collimator is also required to direct the gamma radiation onto its target.


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Tungsten alloy in high temperature tooling is called as tungsten alloy extrusion dies and die casting components.

Tungsten alloy extrusion dies can save time and money in hot metal working. The high tungsten content offers good resistance to thermal cracking, erosion, soldering and the effects of heat cycling in hot metal working processes. Experience has shown that, due to its non-wetting properties, tungsten alloy has significantly increased longevity over the equivalent parts in steel or cast iron. Tungsten alloy does not require heat treatment before use.

Tungsten alloy extrusion dies can save time and money in the extrusion of copper and copper alloys because its high tungsten content offers good resistance to metal pick up, erosion, soldering and the effects of heat cycling such as thermal cracking. This significantly increases the operating life of die inserts compared to the same components made from steel or stellite.


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