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What Is a Tungsten Filament?

Details: Category: Tungsten Information; Published on Tuesday, 15 July 2014 08:44

A tungsten filament is a thin strand of the metal which glows very brightly when an electric current is passed through it. When coiled and sealed inside a glass container filled with an inert gas, a tungsten filament can glow brightly enough to light up a room. It was the inclusion of a tungsten filament in his electrical lighting system that resulted in the world giving Thomas Edison credit for inventing the electric light bulb when in fact dozens of scientists had been experimenting with electric light.

Tungsten is an element (Symbol: W; Atomic Number 74) discovered in the late 18th century. Almost twice as dense as lead, it has the highest melting point of all the metals at 6192 ° F (3422 ° C); of all the elements, only carbon’s melting point is higher. These properties make tungsten very useful not only in electric technology, but also for military applications such as hardening weapons. Another use of tungsten is as a component of jewelry, where it’s combined with other materials to form very hard and lustrous compounds, although they can be brittle.

When Thomas Edison and other scientists were working on developing the electric light bulb, they experimented with a number of materials for the light-producing filament. Until the early 20th century, the most successful incandescent light bulbs utilized a filament of carbonized bamboo, which lasted about 1,200 hours. Edison wasn’t the first to use tungsten, which was introduced as an incandescent light bulb filament in Europe in 1904.

In 1906, Edison's company General Electric (GE) developed a process for making pure tungsten flexible enough to draw into a coiled wire. Using a coiled wire allowed GE to increase the surface area of tungsten that would be inside the bulb. By 1911, the company was manufacturing and selling light bulbs using the new filaments, which outlasted all others. Advances in this technology continued almost uninterrupted, so that the cost of operating an incandescent bulb by the turn of the 21st century was less than 5% of what it was in 1911.

Despite its success as the light source for incandescent bulbs, tungsten filament is remarkably inefficient in producing light. About 90% of the power used in operating an incandescent light bulb is emitted as heat, not light. As more efficient methods of producing light have been developed, most notably fluorescent lighting and light emitting diodes (LEDs), some have called for the banning of incandescent bulbs as an energy conservation measure.

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What is Tungsten?

Details: Category: Tungsten Information; Published on Tuesday, 15 July 2014 08:42

Tungsten is a metallic chemical element classified among the transition metals of the periodic table of elements. It is well known for its strength and durability, which make it extremely useful in a wide range of industrial applications. Some consumers also own products which contain tungsten or were produced with the metal. The world's major sources of this element are Russia, Austria, China, and Portugal, where it is extracted from minerals such as scheelite and wolframite.

This element is not found in a pure form in nature. When it is isolated, tungsten in a very hard, brittle, gray to white metal that is extremely corrosion resistant. It has the highest melting point and tensile strength of any metal, and it also has the lowest vapor pressure point. The metal is identified with the symbol W on the periodic table of elements, a reference to its alternate name, wolfram. Tungsten's atomic number is 74.

People have known about the existence of tungsten since at least the early 1700s, when observers noted that the metal interacted with tin. In 1784, the de Elhuyar brothers managed to isolate it in Spain, using tungstic acid extracted from wolframite. Tungsten has classically been a very valuable metal, since its durability and strength make it extremely useful for military and industrial uses. The name of the element comes from the Swedish tung, or “heavy,” and sten, for “stone.”

One of the most famous uses of tungsten is as a filament in light bulbs. The metal is also used in an assortment of alloys to increase their hardness and tensile strength. Many structural metal alloys use it since the metal has an extremely high melting point, and the element is also used to make wear-resistant tools. While these tools can be expensive, many workers like them because of their durability and long lifetimes.

Tungsten does have some safety precautions. Dust from the metal can be flammable or explosive, and it also irritates mucus membranes, such as those inside of the nose and mouth. In some regions, tungsten has been linked with serious infections of the lungs in people who work with the element on a regular basis without adequate protections. Exposure to the metal has also been correlated with increased rates of cancer, although hard evidence to turn the correlation into causation has not been uncovered.

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The Application of Tungsten Putty in Fly Fishing

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 18:20

Tungsten putty is a non-hardening, moldable material made from tungsten powder and a polymer binder. Particularly useful as the amount of weight can be fine tuned to your needs. Want getting the right amount simply need add a little, or remove a little to.

Most often, soft putties like these will soften when warmed slightly between the fingers. In fly fishing, it's also important to zero in on things that might not be quite so flashy. This allows the fly angler to attach and remove the putty from the leader easily. Once the putty is formed on the leader, the coolness of the water will harden it so that it will not fall off while fishing. After fishing, the putty can be completely removed from the line with no mess.

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Tungsten Alloy VS Steel and Brass

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 18:17

As we all know, there is no doubt that lead is a toxic substance. Among the lead-alternatives, tungsten, steel and brass is common choice

Brass and steel weights are a bit lighter than lead when it comes to destiny. But unlike tin and lead, brass and steel is often used in spinner bodies and blades effective in stained water. The sharp ticking sound created by brass and steel against beads can distract fish's attention from lures. The bad side is that these materials do oxidize. Steel faster than brass, so care does have to be taken to prevent rusting.

From all the above reason, we can see tungsten is better than steel and brass in fishing.

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Tungsten VS Tin in Fishing

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 18:15

More and more often we hear about legislation prohibiting lead in certain waters. There is no doubt that lead is a toxic substance. As our society develops, people are begun to concern their heath instead of only money. With the technology update, here are some great alternatives to lead that work excellently.

Firstly, Tin, has long been a popular lead alternative, especially with fly anglers. It is fairly simple to use for folks due to the comparatively low melting point. The bad side to tin is that it is lighter than lead, so what might be a half-ounce lead weight, will be less than a half ounce with tin. However the good side to this is that if lures are bigger, those made with tin will be lighter and easier to cast and work than would be its lead counterpart. But tin is also found in jig heads.

The use of tungsten is a revolution of fishing. Tungsten, unlike tin, is denser than lead. This allows lure makers to build heavier jigs and weights without making the lure too big.

So from above, we can make an obvious conclusion, tungsten is the better lead-alternative than tin.

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How to Use Tungsten Putty in Fishing

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 18:10

tungsten is tungsten based non-toxic putty . So we can see it is tungsten- based, not lead-based, so that is not only environmental friendly, it sinks faster and more consistently. Tungsten is almost twice as heavy as lead even more over three times as heavy as most other non-toxic materials. A 1/4 ounce tungsten weight will be considerably smaller in size compared to a 1/4 ounce lead weight.

It works exceptionally well in cold water and is environmental friendly. This will let you to have a heavy weight in a small size. The texture of tungsten putty is softer and tackier than most other putties and is reusable. This allows you easier detect the structure under water when fishing. And it allows anglers to adjust weight while they are nymphing. What’s more, you can add or remove small amounts with a quick pinch. The soft property of putty does not snag. If it does, you can pull it off the leader, by this way, your rig can be saved.

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What is Tungsten Carbide Rods

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 17:51

Tungsten carbide rods is known as tungsten carbide bars or cemented carbide bars. It is a new technology and new materials.

Tungsten carbide rods are made into cutting tools, which used in metal, wood, plastic desired stiffness and wear resistance, corrosion products, and other industries.

The main feature is the rod having a carbide stable mechanical properties, ease of welding, high wear resistance and high impact resistance.

Carbide rods mainly used in drills , end mills , reamers . It can also be used for cutting, stamping and measurement tools.It is used in paper, packaging, printing, non-ferrous metal processing industry.

Carbide rods can be used not only for cutting and drilling tools (such as micrometers, twisted drills, drill vertical mining tool index), can also be used as an input pin, roll wear all kinds of parts and structural materials to use. In addition, it can be widely used in many fields, such as mechanical, chemical, petroleum, metallurgy, electronics, and defense industries.

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Tungsten Carbide Cutter

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 17:40

Tungsten carbide cutter's main points are: solid carbide milling cutters, carbide straight shank, carbide saw blade groove cutter, carbide spiral drill cutter, carbide reamers milling machine, carbide end mills and carbide ball nose end mill.

Tungsten carbide milling purposes: Carbide cutter is mainly used for general CNC machining centers , CNN engraving machine. It can also be fitted to an ordinary milling and processing some of the more complex heat treatment of the material, which is not hard on.

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Titanium Tungsten Carbide Cobalt

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 17:30

Titanium tungsten carbide cobalt is composed of the WC% 26mdash,Tic, WC and bonding metal cobalt,or only of the WC% 26mdash.Tic solid solution is composed of multiphase carbide and cobalt. The cobalt content of 4% to 10% of the alloy containing Tic 5% ~ 30%, balance WC, mainly used for cutting steel.

Titanium tungsten carbide cobalt has a high resistance to crater wear ability, suitable for long cutting tool materials. Cobalt with tungsten carbide cutting steel prone to crater wear, which is mainly due to the tool and chip diffusion reaction occurs at temperatures caused by the cutting.

The grade of "YT" ("hard titanium" pinyin word prefix) and the average content of titanium carbide composition.For example, YT15, represents the average Tic = 15%, the remainder being tungsten carbide and cobalt titanium tungsten carbide cobalt content.

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Tungsten Alloy in Snowmobile

Details: Category: Tungsten Information; Published on Monday, 14 July 2014 17:19

Tungsten alloy are especially useful in snowy areas to prevent cars from slipping. Tungsten alloy in snowmobile are metal spikes that are attached to the rubber track of a snowmobile to improve traction. These tungsten alloys allow faster acceleration, quicker stopping and better control in turns.

Tungsten alloy offer a dramatic increase in traction on hard-packed trails and ice and reduce the spinning of the track under aggressive acceleration, decrease the likelihood of getting stuck and allow tighter turns and skid-free stops. They allow a snowmobile to climb hills that were previously impossible to climb. Control of the snowmobile is increased and riding is safer. Tungsten alloy offer an opportunity to significantly increase riding enjoyment and performance of snowmobile.

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