Unlike most other rings, a local jeweler cannot size Tungsten Carbide rings. It is just impossible to rework the material. For this reason, we offer two sizing guarantees for every ring we sell. If you are not sure of the size needed, our Free Ring Sizer Gauge is a sure help and so is our on-site ÒHow to Estimate Ring SizeÓ section. In addition, our Lifetime Ring Replacement Warranty guarantees you can exchange your ring if it ever fails to fit your finger, whether you gain or lose weight or change finger size for any other reason.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Tungsten Carbide rings and bracelets are manufactured using sophisticated vacuum induction furnaces that require an oxygen free environment, and reaching an amazing temperature over 6,200 degrees F. If an astronaut dropped one of these rings from 300 miles above the earth, it would enter the atmosphere glowing red-hot and land on the surface of the Earth virtually unscathed by the experience.

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Because it has the highest melting point of any metal known, Tungsten Carbide is used in space age applications and leading edge military projects such as hand held nuclear fusion devices. The hardness and heat resistance of Tungsten Carbide renders it impervious to radiation. Its tough enduring qualities make it the perfect masculine metal for a manÕs ring or bracelet.

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Tungsten rings and bracelets are heavy, and Tungsten Carbide is the hardest of all metals. It is polished to a perfect mirror finish using diamonds, and, unlike other metals, it will retain the exact polish finish for decades to come.

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Tungsten Carbide has only recently been used in the fashioning of jewelry due to its hypoallergenic nature and the fact that due to its extreme hardness it is not apt to lose its luster like other polished metals. In fact, a ring or bracelet made from Tungsten Carbide will never need polishing and it is virtually scratchproof...only another item with a diamond or diamond surface or a special sapphire in it can scratch tungsten jewelry. Carefree Tungsten Carbide is made without the use of any Cobalt additive and not just anyone can make a piece of Tungsten Carbide jewelry. In order to manufacture a perfectly crafted piece of jewelry, it takes skill that only a few companies have mastered. It cannot be made in someoneÕs garage with a lathe and a machinist.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Tungsten has the highest melting point and boiling point of all the elements, melting at 3,420 degrees C or 6,700 degrees F, and boiling at 5,700 degrees C and 10,300 degrees F. What this means to the average person is that on the surface of the Sun, Tungsten would become liquid, but if you dropped a piece of Tungsten from outer space, it would enter the EarthÕs atmosphere, heat up and glow to red color, and still hit the Earth in a solid piece.

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Pure tungsten, that is, before alloying with any other material, is steel-gray to tin-white and is a very hard element. Tungsten can be cut with a hacksaw when it is very pure (it is brittle and hard to work when impure) and is otherwise worked by forging, drawing, or extruding. This element has the highest melting point (3422 ¡C) (6192 ¡F), lowest vapor pressure and the highest tensile strength at temperatures above 1650 ¡C (3000 ¡F) of all metals. Its corrosion resistance is excellent and any attack by a mineral acid is virtually imperceptible. Tungsten metal forms a protective oxide when exposed to air but can be oxidized at high temperature. When alloyed in small quantities with steel, it greatly increases its hardness.

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Like gold, silver and platinum, Tungsten is an element #74. It is naturally occurring and is one of the main elements responsible for the development of human civilization. Without tungsten, we would not have the incandescent light bulb as the filament inside the bulb is tungsten and has the toughness and resilience exceeding any other metal. In 1922 the Germans developed Tungsten Carbide as the material used in making better cutting tool bits for precision milling and cutting of steel. In World War II, tungsten played an enormous role in background political dealings. Portugal, as the main European source of the element, was put under pressure from both sides, because of its sources of wolframite ore. The resistance to high temperatures, as well as the extreme strength of its alloys, made the metal into a very important raw material for the weaponry industry.

Today tungsten carbide is in widespread use in the worldwide machinery of modern industry and is a darling super alloy that has made aerospace advances possible. And it is still the one little item that makes a light bulb work.

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Tungsten (Swedish and Danish tung sten meaning "heavy stone", even though the current name for the element in Swedish is Wolfram) was first suggested to exist by Peter Woulfe in 1779 who examined wolframite and concluded that it must contain a new substance. In 1781 Carl Wilhelm Scheele ascertained that a new acid could be made from tungstenite. Scheele and Torbern Bergman suggested that it could be possible to obtain a new metal by reducing tungstic acid. In 1783 JosŽ and Fausto Elhuyar found an acid in wolframite that was identical to tungstic acid. In Spain later that year the brothers succeeded in isolating tungsten through reduction of this acid with charcoal. They are credited with the discovery of the element.

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Radioactive element is the ability to spontaneously from the unstable nuclei emit particles or rays inside (such as α particles, β-rays, γ-rays, etc.), while the release of energy, and ultimately the formation of a stable nuclide class element, this process is called radioactive decay . Generally more than 84 atomic elements are radioactive, atomic number 83 some of the following elements such as technetium (Tc), promethium (Pm), also radioactive. Radioactive elements are divided into two types of natural radioactive elements and artificial radioactive elements. Including natural radioactive elements polonium (Po), radon (Rn), francium (Fr), radium (Ra), actinium (Ac), thorium (Th), protactinium (Pa) and uranium (U), etc.; synthetic radioactive element such as actinides elements after the plutonium. There are three main natural decay of nature, namely, uranium series, actinides and thorium series, the three lines of the "ancestor" nuclides are 238U, 235U and 232Th. As the "ancestor" of life and the earth nuclides similar age, so these nuclides decay has not completely lost. Department of radionuclides in each of the previous generation are made radionuclides decay via α or β, respectively, finally terminating in stable nuclide 206Pb, 207Pb and 208Pb.

As medical technology advances, more and more radiant life, has caused new problems, these rays are X-rays, gamma rays, α-rays, β-rays. Tungsten alloy is used to make the best of the shield material, whether medical or industrial equipment. Compared with conventional shielding materials, tungsten alloy shielding member reflects good value. High density alloy can be provided as the energy absorption, and the volume of lead less than 1/3 of people using the tungsten alloy can be a good and reliable shielding performance. Our common language tungsten alloy radiation shielding container shielded gamma shielding and industrial supplies. Shield member can also be used collimators, cancer treatment and radiation shielding syringe. In order to protect patients and health care workers, it is necessary to use shielded tungsten alloy equipment these harmful radiation.

The researchers found that radiation capacity and material density, the greater the density shielding performance is better. Has great density tungsten alloy, so it's shielding performance is high, and tungsten alloy product is environmentally friendly, than lead less hazardous products.

Tungsten alloy products are used to make the best shield materials, non-toxic and easy processing.


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