Shielding is a method of limiting electromagnetic waves within a certain area by the shell, box, the plate etc. Radiation source includes electric near field, the magnetic field source and far zone plane wave, thus based on the different radiation source to choose the differnt material, structural shapes, and on hole leak control and other aspects. To achieve the required shielding performance, you need to first determine the source of radiation, a clear frequency range, according to the typical structure of each band leakage, determine the control elements, and then select the appropriate shielding materials, design shield case.

Tungsten alloy shield has good radiation protection performance, strong mechanical properties, compressive strength, environmentally sound and other features, it has great prospects.
 

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With the rapid development of nuclear science and applications, a variety of rays are widely used in various fields of medicine, food radiation etc., as green healthy living concept deeply rooted, so human gradually recognize the damage of ray will bring to them and the environment. Other than the traditional materials such as lead, iron and water, tungsten alloy has been identified as the best radiation shielding material.

Tungsten alloy shields used in medical, industrial shielded, oil and gas wells, automotive, military, and industrial, sports and entertainment, resistance welding, high pressure switch or circuit breaker contacts etc.

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Tungsten alloy is an environmental-friendly, durable and hardness material, the most important is that its density of 19.25g/cm3, which is just about the same density as gold (19.3g/cm3). Therefore, it is usually made use of gold substitution.

These advantages make gold-plated tungsten brick enjoys the superiority to be the best substitute for the costly metal of gold or platinum. It is necessary to tell that the gold-plated tungsten alloy brick would be given as a gift or present for your lover, best friend, classmate, VIP customer, also the product could be used as souvenir for anniversary, birthday, society activity, etc.




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The new tungsten carbide boring tool can shorten the process of adjusting the knife time to help users high-speed, low-volume production of products, factories and workshops in order to ensure timely completion of the production and processing tasks. In addition, this tungsten carbide boring tool itself can be automatically adjusted, corrected wear compensation errors or automatic forming.

 

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Darts come in a variety of materials, weights and grips. The most common metals used in the production of darts are brass, nickel silver and tungsten. Brass is inexpensive and is perfect for the home recreational player and the occasional pub game. Nickel Silver has the same attributes of brass but is tarnish resistant. Tungsten is extremely dense, three times denser than brass & nickel silver, and is popular because of its weight to size ratio resulting in a heavier weight in a smaller mass. If two barrels, one made of brass and one made of tungsten, the same weight were compared you would see that the tungsten barrel is 3 times smaller than the brass barrel. These important features make tungsten the material of choice for the more serious dart shooter.


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You may see some darters using chalk or forms of gripping wax on their fingers. They use this to help their grip on the tungsten dart but one of the best ways to maintain a good grip on tungsten dart is to make sure they are clean and your hands are free from grease. So put down your crisp packets and wash your hands! But seriously it is worth while every so often to give your tungsten darts a good clean.

By cleaning tungsten darts you will not only make them last longer, but will also restore much of the grip by removing both the slippery feeling and the particles filling-in the hollows of the knurling.


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Steel tip darts are measured by weighing the point and barrel without the flight and shaft. Although darts are available in a wide range of weights (from 18 – 40 grams), the majority of players play with darts weighing 18 – 23 grams when using brass and 23 – 26 grams when using tungsten darts. The legal weight limit of your major overseeing organizations is 50 grams.

Soft tip darts are measured by weighing the entire dart including the barrel, flight and shaft. The weights being used to play soft tip darts are most commonly 16, 18 and 20 grams and are much lighter than their steel tip counterparts. Originally, soft tip darts needed to be light in weight because the electronic matrix in the vending machine was delicate and couldn’t withstand the impact of a heavy dart. The technology has been greatly improved over the years and the dart weights have increased steadily from the original 12 grams to the current top weight of 20 grams.

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Tungsten is incredibly heavy, packing more mass into every dart. The darts below both weigh 21 grams. Note how much slimmer the tungsten barrel is. Players looking to advance their game choose trim tungsten-alloy barrels for their accuracy, confident their darts will hit where you want.

Tungsten barrels can sharpen anyone’s game. They give you the stabilizing weight of a heavier dart and the tighter groupings possible only with a slim dart.

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Soft tip darts are most commonly made from three different materials, brass, nickel-silver, and Tungsten. Tungsten darts are the most popular of the three types. Tungsten is a more dense metal which allows the darts to have a smaller diameter than brass darts of the same weight. Most tungsten darts are made from 80%-90% tungsten. Soft tip tungsten darts are usually made with 80% tungsten to keep the weight down. Brass and Nickel-Silver alloys are easier for the manufacturers to work with than tungsten, so they tend to come in a wider variety of grips. Tungsten also tends to be more expensive than Brass or Nickel-Silver.


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Is there that big of a difference between 80% tungsten darts and 90% tungsten darts? This is an easy question to answer. But keep in mind that just because the answer is easy doesn't mean that your decision will be too. Most dart players cannot tell the difference between an 80% and a 90% tungsten barrel. A 90% tungsten barrel has a tendency to be slimmer than an 80% barrel. If you have two darts both weighing 23g, one made of 90% tungsten and the other from 80%, the 90% barrel must be slimmer in diameter or shorter than the 80%. The reason for this is that since Tungsten is such a dense material, it doesn't take as much of the material to reach the desired weight. There is a price difference between the two, but not a huge one.


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