An Attractive Prospect for the New Ideas of the Metal Material
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- Category: Tungsten Information
- Published on Monday, 18 February 2013 17:38
- Written by jiang
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Aluminium was once more costly than gold. Napoleon III, emperor of France, reserved cutlery made from it for his most favoured guests, and the Washington monument, in America’s capital, was capped with it not because the builders were cheapskates but because they wanted to show off. How times change. And in aluminium’s case they changed because, in the late 1880s, Charles Hall and Paul Héroult worked out how to separate the stuff from its oxide using electricity rather than chemical reducing agents. Now, a small British firm, hope to do much the same with tantalum, titanium and a host of other recherché and expensive metallic elements including neodymium, tungsten and vanadium.
The effect could be profound. Tantalum is an ingredient of the best electronic capacitors. At the moment it is so expensive ($500-2,000 a kilogram) that it is worth using only in things where size and weight matter a lot, such as mobile phones. Drop that price and it could be deployed more widely. Neodymium is used in the magnets of motors in electric cars. Vanadium and tungsten give strength to steel, but at great expense. And the strength, lightness, high melting point and ability to resist corrosion of titanium make it an ideal material for building aircraft parts, supercars and medical implants—but it can cost 50 times as much as steel. Guppy Dhariwal, Metalysis’s boss, thinks however that the company can make titanium powder (the product of its new process) for less than a tenth of such powder’s current price.
The difference between its process and that of Hall and Héroult (and why electrolysis has not previously been used to make metals such as tantalum and titanium) is that the Hall-Héroult method requires both input oxide and output metal to be in liquid form. That demands heat. But aluminium has a fairly low melting point and its oxide can be dissolved in a substance called cryolite that also has a low melting point, so the amount of heat needed is manageable. Titanium and tantalum are not so obliging. The company trick is to do the electrolysis on powdered oxides directly, without melting them.
This was shown to be possible in 1997 when researchers at Cambridge University found that immersing small samples of certain oxides in baths of molten salt and passing a current through them transformed the material directly into metal. Metalysis was set up in 2001 to commercialise the idea and in 2005 the firm moved to Wath-upon-Dearne, a village near Sheffield, in South Yorkshire, in order to tap the local engineering skills that once made the county (home of silver plate, stainless steel and the Bessemer converter) the California of metallurgy. These skills turned a technique that could produce a few grams of metal in a laboratory into a process that operates on an industrial scale.
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Tungsten Electrodes - Why 2% Lanthanated Tungsten Rules
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- Category: Tungsten Information
- Published on Thursday, 07 February 2013 17:59
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2% lanthanated tungsten electrodes carry more amperage than the rest and they ball evenly on alternating current. Not all tungsten electrodes ball evenly and not all of them can handle the amperage.
With all the different types of tungsten electrodes available, like pure tungsten, ceriated, lanthanated, thoriated, and zirconiated and rare earth types, what is the best tungsten to use?
That's a big question....but
If you are interested in an all purpose tungsten electrode that can be used for steels as well as aluminum and magnesium,...
If you are looking for an electrode that carries more amperage than all the rest so that you can use a smaller diameter electrode...
If you are interested in an electrode that does not give off radioactive dust when sharpened...
Then 2% lanthanated tungsten are the clear choice
Pure tungsten balls up at relatively low amperage and often requires using one size larger electrode than others.
1.5% lanthanated is supposed to be comparable to 2% thoriated but our tests indicate otherwise.
2% thoriated hold up well to high amperage but don't ball up evenly on AC...and reportedly, give off radioactive dust when ground.
Zirconiated electrodes don't carry much more current than pure tungsten.
Unless you want a drawer full of different types of tungsten, one for every situation, just get some 2% lanthanated tungsten and call it a day.
At 200 amps on AC current and 100 hz, our tests showed that 2% lanth electrodes performed better than all the rest.
Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Modern Tungsten Inlay Wedding Rings
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- Category: Tungsten Information
- Published on Thursday, 07 February 2013 17:27
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In one of my recent articles, Tungsten rings are fast becoming a fashion trend in recent times. Whether the rings are worn for fashion, wedding symbols or as engagement rings, these fabulous rings are sure to capture a lot of attention of those who ever laid eyes on them.
Tungsten inlay wedding bands or rings are made available in classic simple styles when they first emerged in the jewelry industry. A few years ago, the process of creating tungsten carbide rings requires some extensive technology due to the complex characteristics of the tungsten metal. Hence, fast forward a few years later, the technology has advanced significantly and has since allowed many possibilities of creating more complex tungsten ring designs. Tungsten carbide rings can now be made in simple and classic dome design to a more unique flat surface design with beveled edges. The creation of the tungsten jewelry can even be elevated to a new level of carved designs, colored rings and exquisite inlays.
Tungsten inlay rings can be as simple as utilizing metals such as silver, platinum, gold and titanium or more unique materials such as carbon fiber, resin and ceramic. It is very common to use gold and carbon fiber as inlay with these tungsten rings. These inlaid rings with precious metals or carbon fiber are both modern and chic. Yet, the precious metals show a small contrast from the tungsten metal and thus bringing out a unique blend of color.
These tungsten carbide rings inlaid with gold, carbon fiber and resin offer an exquisite yet toughness character to your ring. Carbon fiber and resin inlays are fashionable and can be made in different colors that would suit many individual tastes and characteristics. On the other hand, there are also sandblast effects that are made as an alternative to inlays. Regardless, whichever inlaid rings design is selected, they are perfect from an economical standpoint that is both durable and beautiful.
Lastly, make sure you buy the tungsten rings without cobalt as to prevent any unsightly skin reactions. Check with the seller or read their tungsten rings FAQ before making any decision.
Tungsten Jewellery Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-jewellery.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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All You Want to Know About Tungsten Carbide Wedding Bands
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- Category: Tungsten Information
- Published on Thursday, 07 February 2013 17:40
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If you are getting married soon and want to buy a wedding ring that is as elegant as gold and platinum, but do not have the budget for expensive rings; what is your alternative to expensive wedding rings without sacrificing quality? The answer is tungsten wedding bands, which are wedding rings made from the most durable metal used in the jewelry industry today, tungsten carbide.
Tungsten carbide wedding bands have a slightly grayish metallic hue that men love. Its polish stays flawless for years and years, unlike gold, platinum or even titanium. How can a metal that with so many advantages cost so much less? This is because the raw materials used to make tungsten wedding bands are not at all time high prices, like gold is, for example. The value of jewelry is based on the cost of the metal used to make the ring and the cost of labor that is required to make the ring. In the case of tungsten rings, the cost is mainly the cost of craftsmanship. Be careful not to purchase tungsten rings that are priced too cheaply (usually less than $100.00) because this is usually an indication of low quality.
Tungsten carbide wedding bands have the same or even superior features of traditional metals used for wedding rings. As stated earlier, they possess the qualities of being very hard, durable and resistant to dents and scratches. You do not have to worry about allergic reactions if you have sensitive skin because tungsten carbide is hypoallergenic, just like platinum. White Gold on the other hand, is not hypoallergenic because it contains a high amount of nickel. Also, tungsten also does not lose its color like white gold does after a short time of wear.
Tungsten Wedding Bands: Important Features
The most important feature of tungsten carbide wedding bands is the permanent polished look of the rings. A tungsten carbide ring never needs to be re-polished, even years or decades after you own it, which means you never have to spend any money on re-polishing of your ring, as is the case with precious metal rings. To provide additional peace of mind and value to our customers, Larson Jewelers offers a lifetime guarantee on all tungsten rings we carry. This means if anything should happen to the ring, whether it is your fault or not, we will replace it free of charge. Even if your finger size changes during the course of your lifetime, we will replace your ring with a new size. While some other retailers do provide a lifetime warranty, they do not provide a free lifetime warranty. This shows a lack of confidence in the rings that they carry.
The superior features of the tungsten carbide wedding bands mean that you do not have to take them off if you engage in sports, manual labor, or other activities that could damage rings made of traditional metals, which you have to take off to prevent any damage. Rest assured you can enjoy your favorite physical activities and wear it to work without worrying about any noticeable damage to your carbide wedding ring.
These days, people are looking for elegance, affordability and durability when shopping for a wedding band. In other words, value is what people are looking for in a wedding band. Tungsten wedding bands offer exactly that. This is why in only a few short years, tungsten wedding rings have become one of the most popular types of wedding rings on the market today.
Tungsten Jewellery Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-jewellery.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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What Happens When You Let Women Choose Tungsten Rings for Men
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- Category: Tungsten Information
- Published on Thursday, 07 February 2013 16:36
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If you're like most guys, the idea of shopping for tungsten jewelry isn't one that gets you terribly excited, even if that jewelry is tungsten rings for men. Most guys are perfectly content with letting their fiancé or girlfriend choose a tungsten ring for them. If this describes your situation, here is some advice – don't let her! There is nothing less romantic then saying, "Sure, honey, why don't you just pick out a ring for me…" It's like saying "I don't really care about the most enduring symbol of our relationship." Think about it; taking the time to look at rings for men might actually be fun, and you should have at least some input in choosing a ring that you'll be wearing every day. If you let your fiancé choose a wedding ring for you, you may end up with something completely different from what you had envisioned.
Of course, this doesn't mean that you should just go shopping for a tungsten wedding ring on your own. There is definitely something to be said for getting a woman's point of view on rings for men. Perhaps she had always imagined that your ring would match her wedding band; or maybe she knows about a specific place to buy one that will save a lot of money. Besides, the selection of your tungsten wedding rings is a very special time and will be a memory that lasts forever.
Today, there are designer tungsten rings for men and women that allow you to personalize your choice of wedding jewelry and make it truly unique. Even if you are planning to buy a plain and simple band, no one is too busy to do this together. The choices are not quite as simple as they were a decade ago. Now, there are tungsten wedding rings for men in every imaginable metal and style. If you had pictured yourself wearing a yellow gold band like your father did; think again. Men are expressing a more contemporary outlook through their choice of wedding jewelry. Even those who set out to buy gold often choose two tone black titanium rings, tungsten rings with carbon fiber insets, and other industrial metals like cobalt and stainless steel. Even sterling silver is becoming a popular choice in tungsten wedding rings for men.
If your style is clean, elegant and sophisticated, you may want a ring that looks great yet doesn't "jump out at you". Some of the more popular plain bands for men are made from white tungsten and black titanium. They can be as simple as a polished and domed band, or as complex as a faceted or braided design.
Tungsten Jewellery Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-jewellery.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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