Tungsten alloy brick has the good properties of high density with small volume, perfect hardness, good corrosion resistance, non-toxic and environmentally friendly, so it is widely used as tanker counterweight because of the former properties.

Usually, tungsten alloy brick also could be manufactured as the parts of military defense, extrusion die, and counterweights for tank.


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Tungsten plastic is similar with tungsten poly, which combines tungsten and plastic. So tungsten plastic has the good properties of tungsten (high density, small volume, high temperature resistance, high radiation resistance, good tensible strength) and poly (low cost, good corrosion resistance, easily to be machined into different shapes of products).

As these properties, tungsten plastic is widely used as radiation shielding as well as counterweight in many fields.


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Poly tungsten also named tungsten poly which combines poly and tungsten powder, so poly tungsten has the good properties of tungsten and poly that is: high radiation resistance, high density with small volume, high temperature resistance, low cost and easily to be machined into different types of products, lead free and environmentally friendly.

As these good advantages, poly tungsten is the best material to make radiation shielding which is widely used in many areas especially in medical field. Chinatungsten is a professional manufacturer and supplier of poly tungsten who can provide all kinds of poly tungsten products according to your requirements.


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Tungsten and tungsten heavy alloy in metallic form and tungsten compounds are used in various forms of tungsten heavy alloy radiation shielding. Their high densities meet the primary requirement of a tungsten heavy alloy radiation shielding material and in certain tungsten radiation shielding application, tungsten's high atomic number is also important. The ease with which tungsten can be worked is of added value.

The tungsten heavy alloy radiation shielding of containers for radioactive materials is usually metallic tungsten. Radioactive materials in laboratories and hospitals are usually handled by remote control from a position of safety behind a wall of tungsten bricks and X-ray machines are normally installed in rooms lined with sheet tungsten.


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Compared to traditional radiation shielding materials such as lead and boron carbide, tungsten funnel shielding provides excellent density with small capacity. At the same weights high density alloy can provide the same energy absorption as lead using 1/3 less material.

During design of tungsten funnel shielding, tungsten funnel shielding is calculated according to requirements of shield to abate the multiple shielding materials' thickness.



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Tungsten metal is a grayish-white lustrous metal that is often brittle and hard to work. Of all metals in pure form, tungsten has highest melting point of all elements except carbon - vary between 3387°C and 3422°C. It also has good thermal and electrical conductivity. Its electrical conductivity at 0°C is about 28% of that of silver which itself has the highest conductivity of all metals. In addition, it has low vapor pressure at high temperatures.

Such properties make tungsten metal a high performance material in high temperature products and processes. Tungsten metal powder is used as a filler material in plastic composites, which are used as a nontoxic substitute for lead in bullets, shot, and radiation shields.



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Tungsten alloy collimator shielding is a device that narrows a beam of particles or waves. It belongs to input and output element of optical fiber communicaiton devices. It can be adopted as linear accelerator and cyclotron in medical treatment.

Tungsten alloy collimator shielding has a simple structure, through which the fiber radiate light can be converted into parallel light (gaussian beam). So its main fuction is to efficiently maximize the light coupling into the devic.


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As the continuously developing medical technology, the medical radiations generated in medical process have become more and more, which causes problems to medical work. These radiations including X-rays, gamma rays, α rays, β rays, etc.

In order to protect the safety of patients and health care workers, researchers found that there is relationship between radio protective capability and material density. The greater the density, the better the shielding performance. Since the density of tungsten alloy is very high, the shielding performance is excellent.

Tungsten alloy material is a class of alloy including tungsten as a substrate (W content of 85-99%), and adding a Ni, Cu, Co, Mo, Cr and other elements. According to the composition characteristics and application, it is divided into W-Ni-Fe, W-Ni-Cu, W-Co, W-WC-Cu, W-Ag and other major series, and the density is up to 16 .5-19.0g/cm3, which is world known as heavy alloy. Tungsten alloy has strong capability in absorbing radiations, which is 30~40% higher than lead.

Application series of tungsten alloy radiation shielding in medical:
1 .Tungsten alloy Multi-leaf Collimator(MLC)
Thickness: 2.0-3.8mm; plate flatness: 0.05mm;
2 .Tungsten alloy collimator;
3. Tungsten alloy  protection cans - used for medical radiation shielding;
4. Tungsten alloy needle shielding - shielding for medical radioactive liquid;
5. Tungsten alloy memory –cans, boxes or other containers for storing radioactive material.
6. Collimators - for medical linear accelerator and cyclotron;
7. Tungsten alloy containers - for ray shielding on 60Co therapy machine;
8. γ camera tungsten alloy collimator.

Application series of tungsten alloy radiation shielding in nuclear technology:
1. Tungsten alloy collimator for detecting container system;
2. 60Co and tungsten alloy containers of other radiation shielding;
3. Tungsten alloy shielding for γ-ray collimator in geological survey;
4. Tungsten alloy collimator for pipeline inspection ray shielding;
5. Tungsten alloy collimator for industrial inspection of γ-ray shielding

The application of tungsten alloy radiation shielding parts:
• Radioactive source containers
• Gamma radiation shielding
• Shielding Block
• X-ray collimator
• tungsten alloy PET shielding pieces
• Shielding in cancer therapy equipments



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Tungsten alloy plate play important role in manufacturing of collimator for nuclear medicine, nuclear research, geologging and homeland security. These materials provide reliable protection against X-rays and gamma radiation.

Specifications of tungsten alloy plate
Size: Width*Length*Thickness(2.0-250.0mm)*(2.0-250.0mm)*(2mm-15mm)
Density: 15.8-18.50 g/cm3
Composition: W content: 85-97%, W-Ni-Fe, W-Ni-Cu
Surface: Sintering surface, Ground surface


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Tungsten alloy medical radiation shielding is necessary for X-ray diagnosis. Medical radiation shielding of X-ray diagnosis not only reduce individual dose of examinee as far as possible. It also needs to reduce public dose commitment caused by medical radiation. That is why medical attract high attentions from all sectors of the community. Public dose commitment occupies the most origin of artificial ionizing radiation. It has more influence than ash caused by nuclear weapons test. It is also higher than per capita effective dose of the tear caused by global nuclear power or nuclear accident in Chernobyl, the most serious nuclear accident so far, by several orders of magnitude. Medical radiation shielding of x-ray diagnosis is the largest origin artificial ionizing radiation, increasing continuously. So, it is necessary to strengthen optimization of medical radiation shielding when applied frequency is increasing continuously, so that reduce public dose commitment.

Density of tungsten alloy medical radiation shielding is higher twice than lead. The high density of tungsten alloy allows a reduction in physical size of shielding components, without compromising the effectiveness of shielding characteristics. Otherwise, tungsten alloy has the advantage of non-toxicity, compared with lead. So tungsten alloy is ideal for against X-ray.


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