Tungsten plastic makes an important contribution in our daily life, especially in radiation shielding areas. Tungsten plastic contains tungsten and plastic, it has the advantage of tungsten such as good radiation resistance, high density, etc. through extrusion technology, and adding plastic in tungsten, tungsten plastic also has advantages of plastic, such as low cost, higher ductility.

Instead of lead tungsten plastic is a better material to make radiation shielding, because tungsten plastic is non-toxic and environmentally friendly material.


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Geologging which is known as wireline logging and borehole logging is an exploration technique used in the oil and gas industries. A gamma ray source is lowered into a borehole and the radiation penetrates the rock strata. Tungsten alloy radiation shielding can help you to overcome the problem.

This data can then be analysed to determine whether deposits of gas or oil are present. Tungsten alloy radiation shielding is used to shield the radioactive source and to act as a collimator for the gamma beam. Tungsten alloy is the best material for radiation shielding because the properties of tungsten alloy that is high density, small volume, good radiation resistance, etc.


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Tungsten alloy multileaf collimator is widely used in radiology departments and are an integral part of radiotherapy. Tungsten alloy also named tungsten heavy alloy is the best material to make tungsten alloy multileaf collimator for it has the so many good properties, such as high density, small volume, high radiation absorption, high temperature resistant and so on.

Tungsten alloy multileaf collimator is used in a variety of diagnostic and therapeutic medical technologies. High-density alloys for multileaf collimators are used to comprise the individual leaves, which can move independently in and out of the path of a particle beam. This crucial device directs a beam and focuses radiotherapy treatment to precisely conformed shapes, delivering correct therapy doses to patients.


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With the development of our daily life, more and more high technologies are used by people, including computer tomography used in medical. The computer tomography is a medical instrument which produces 3-dimensional X-ray images of the area in question. Several X-ray tubes are contained. In such an X-ray tube we find an electron gun whose electrode is made of tungsten and furthermore a rotating anode also made of tungsten or a tungsten-rhenium alloy.

The shielding of the whole machine is done by tungsten alloy radiation cover (as a replacement for lead, which was used in earlier days). Tungsten alloy has the property of high radiation absorption, so it is the best material to make radiation shielding, tungsten alloy radiation cover is better than the radiation shielding made of lead for it is non-toxic. Tungsten alloy radiation cover is widely used in medical area to protect us from computer tomography radiation.


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Surface state of tungsten bar:
Any oxidation, contamination, and severe excessive fusion, bubbling, delamination, or crack is not allowed for product W1. Camber should be no more than 10mm. Any excessive fusion, bubble, delamination, crack, surface bulky crystallization or severe oxidation &contamination are not allowed for products W2 and W3. The length of the spalls should not be more than 8mm, width no more than 3mm, depth no more than 1mm; The diameter of mechanical pitting should not be more than 1mm, depth no more than 0.5mm; Camber should be no more than 4mm. Any oxidation or contamination is not allowed for product w4. The cartridge of the vertical sintering part should be cut off, and the section is not allowed to be loose or intermingled.

Physical property of tungsten bar:
The density for W2, W3 tungsten bars is more than 17.5g/cm3. Measured data for the section grain size of W2, W3 can be provided.


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Grade of tungsten bar:
In reference to different chemical components and applying requirement, the grades of products are divided into four categories:W1, W2 ,W3,W4.

Appearance of tungsten bar:
The appearance of tungsten bar turns to be metallically gray or dark gray. Hygroscopy is not allowed on the appearance of W1 ,W2, and W3 tungsten bars.


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Tungsten bar is mainly used to found ingredient of material, cutter and heads, tungsten wire for lights instruments, electric contact points and conductor of heat, crankshaft and cylinder barrel of advanced automobile, ingredient of kinds of heat-resistant steel. Also used for making special steels, to make guns, artillery rockets, satellite airplane and ship. It has a luster rather like that of silver in uniform color. Though the whole bar may slightly curve, the maximum height of the bend should not be more than 7mm.

Tungsten bar with impurities is used to procedure bulb filaments or electron tube filaments, which are guaranteed to have remarkable resistance to high temperature.

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Tungsten has been used without ill effects as a component in US food and Drug Administration (FDA)-approved medical implants such as orthopedic hardware and tungsten coils for heart defects. Numerous countries have used tungsten and various tungsten alloy munitions for a number of years because of its high density and ability to penetrate armor.

Initially, tungsten carbide was used in munitions, but newer composites such as tungsten/nickel/cobalt and tungsten/nickel/iron have superior properties.


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Tungsten is a naturally occuring metal. Tungsten can be used either in pure form or mixed with other metals to make alloys.

Tungsten alloys tend to be strong, and resistant to heat and wear. Tungsten and its alloys are used in a variety of commercial products including loght bulb filaments, X-ray tubes, welding electrodes, grinding wheels and ceramic pigments.


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Tungsten, from the Swedish tung sten meaning ‘heavy stone'; chemical symbol W, was first isolated in 1783. The heavy alloys of this hard, dense metal should not be confused with tungsten carbide, as used in cutting tools. These alloys typically contain 90 - 97 wt%, hence deriving their fundamental properties from tungsten. As a result, WHAs are becoming the materials of choice for designers and engineers who require such properties as high density, good mechanical strength and ease of machining for use in radiation shielding and collimation and above all, counterweights and ballast.

Therefore, tungsten added with Ni, Fe, Cu is very suitable matreial for counterweights.


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