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Tungsten Rubber Core Fishing Sinkers

Details: Category: Tungsten Information; Published on Wednesday, 03 September 2014 09:03; Written by Sherry; Hits: 527

Tungsten rubber core fishing sinkers have a groove like a split shot and two tabs also called ears on each end of the sinker. Rubber core tungsten fishing sinkers resemble the oval and American football shape .The line is placed in the centre groove, and the tabs are for fixing the line in place by twisting the line in opposite directions, finally wrapping the line around the rubber core. If you want to release the line, just twist the two tabs in reverse. Rubber core fishing sinkers can quickly be added or removed and do not brake the line.

Rubber core fishing sinkers have many applications. The common applications is using a small 1/8 ounce version for live bait offerings, or adding a large sinker when trolling long-lines to help baits run at greater depths.

Lead is widely used as the materials for this type of tungsten fishing sinkers. However, there are more and more alternatives come out because of its toxic property. The environmental friendly materials tungsten alloys are more widely used. As the high density of tungsten alloy, tungsten alloy rubber core fishing sinkers are about 30 percent smaller than lead ones. So that it is delighting to achieve desired weight with a small volume.

Rubber-core-fishing-sinkers

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Multileaf Collimators to Match Every Shape

Details: Category: Tungsten Information; Published on Tuesday, 02 September 2014 17:46; Written by yewq; Hits: 562

In order to target radiation precisely to the diseased tissue, it is necessary to use multileaf collimators.

First of all, X-ray images are produced to determine the precise position and outline of the tumor. Following this 3-dimensional measurement, an electric motor moves each individual leaf in the collimator to the correct position – with up to 120 leaves being used to shape the outline of the tumor with millimeter accuracy. Then, the tumor is exposed to high energy radiation. During this process, the tumor is radiated by turning the gantry with the multileaf collimator 360° around the patient. To protect the surrounding healthy tissue, a highly precise multileaf collimator is necessary. To protect the environment from unwanted radiation, different shielding parts are widely used.

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Advantages and Applications of Tungsten Heavy Alloy’s Shielding

Details: Category: Tungsten Information; Published on Tuesday, 02 September 2014 17:21; Written by yewq; Hits: 575

Advantages of Tungsten Heavy Alloy’s Shielding：

1.Use not subject to NRC, EPA, or special OSHA regulations;2.High radiation absorption (superior to lead);3.Low toxicity-safer than lead or depleted uranium: simplified life cycle;4.Easily machined into complex geometries;5.Hardness, strength, and ductility make for good durability;6.Good corrosion resistance

Additional Industrial/Commercial/Medical Applications:

Radiography,Nuclear power plant shielding,nuclear medicine,clinical point shielding,X-ray collimators and area shielding,Isotope production, transport, and containment,oncology Isotopic and accelerator based platforms,homeland defense-personal protection equipment for emergency responders and large container inspection devices

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High Energy Radiation Shielding

Details: Category: Tungsten Information; Published on Tuesday, 02 September 2014 17:29; Written by yewq; Hits: 559

Applications of tungsten alloy include collimators for the medical industry, shielding blocks, oil well logging tools and instrumentation and nuclear equipment.

Tungsten alloy is an excellent material for use in radiation shielding (high energy photonic). and they are most popularly used for this application. These alloys are excellent materials for shielding and collimation due to their combination of radiographic density, machinability, strength, and low toxicity. Tungsten Heavy Alloy offers a superior protection level to lead in an equivalent thickness and, unlike lead, resists deformation and can be accurately fastened.

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Tungsten: the Perfect Metal for Bullets and Missiles Part Three

Details: Category: Tungsten Information; Published on Tuesday, 02 September 2014 16:25; Written by jwy; Hits: 591

It is used in the spikes in the drive tracks of snowmobiles, the vibrators that wobble our mobile phones when they ring, weights for fishing tackle, the balls of ballpoint pens, and professional darts.

It is also why fraudsters have sometimes managed to make themselves an easy profit by passing off gold plated bars of tungsten as the real thing. And its density and hardness is why the military has called tungsten into service in another kind of evolutionary arms race.

"Tungsten makes very good bullets," the military analyst Robert Kelley tells me. "It is the kind of thing that if you fire it at someone else's armour, it will go right through it and kill it."

And just like the creatures of the Cambrian period, once someone starts using teeth (or tungsten bullets) you need to do something about it.

"If you introduce tungsten into your bullets you've got to introduce tungsten into your armour," says Mr Kelley.

He describes the fascinating balance military engineers have to negotiate between the strength of tungsten and the costs in fuel and manoeuvrability all that extra weight brings.

"They'll put the tungsten on the side of the tank but not on the top. So then people will develop warheads that will fly towards the tank and then at the last minute go up and then drop on it, so then you have to start arming the top of the tank.

"So it is a constant game of give and take."

And tungsten's extraordinary properties have led to the development of a class of missiles that work without explosives.

"Kinetic bombardment" weapons involve firing what are, in effect, spears of tungsten at incredible speed towards your target. They can penetrate thick steel armour and cause terrific, but very localised, devastation.

Tungsten's only rival for this kind of application is the radioactive element uranium. Depleted uranium is (almost) as dense as tungsten and has an added advantage - from a military perspective - that it burns at the extreme temperatures generated as you punch your way through steel tank armour.

That will often blow up any explosives in the tank.

"Put it this way, if you are the guy inside the tank, you will not remember what happened," says Kelley bluntly.

So why does the military still use tungsten if uranium has this macabre, but useful additional property?

Because, as the people of Kuwait discovered after first Gulf War, depleted uranium leaves a potentially deadly dust behind after it burns. It sounds bizarre but, in the world of warfare, tungsten is the eco-friendly alternative.

All these evolving military and industrial uses explain why tungsten is classified as a critical strategic element by many nations.

Yet more than 80% of world supply is controlled by China, and in recent years China has imposed restrictions on the export of tungsten - along with many other raw commodities. It wants to encourage the development of the hi-tech industries that use tungsten within China itself.

That's also helped to push prices up, making previously uneconomic non-Chinese deposits worthwhile to mine.

Hemerdon, on the edge of Dartmoor, is the first new metal mine to be opened in Britain for 40 years, and will exploit the world's third largest tungsten deposit.

It is being re-opened by a company called Wolf Minerals, named after "wolfram", an alternative name for tungsten and why the element is represented by a W in the periodic table. (In fact, "volfram" is the name used in Sweden, where "tungsten" refers to Scheelite, calcium tungstate.)

This new mine is another manifestation of the competitive pressures that shape the modern world and - as we have discovered - drove evolution in the primordial world too.

Though ironically the rocks they'll be mining at Hemerdon are much younger than the Cambrian - a mere 400 million years old.

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