At the beginning of this month, the trade of tungsten has been stable and moving smoothly, but price of tungsten ranges from raw material tungsten concentrate to tungsten finished parts has been staying stable, without the trend of increasing until end of July. 

Tungsten concentrate price has remained 110,000 RMB yuan/ton, and it has been not so high since the beginning of 2014. The above price is for 65 degree tungsten concentrate, and for 60 degree price will be in 2,000 RMB yuan/ton less than 65 degree. As for the stable price of tungsten concentrate, tungsten oxide/trioxide is keeping at 210,000.00RMB yuan/ton for both yellow tungsten oxide and blue tungsten oxide. AMT is almost 205,000.00RMB yuan/ton, and APT 175,000.00RMB yuan/ton.

Important products made from tungsten concentrate, tungsten powder, can be purchased at 295,000 RMB yuan/ton, as a direct result, the price of regular tungsten finished products is stabilized at to 400,000 RMB yuan/ton. So is the trend of tungsten carbide price and tungsten alloy price.

It is also reported from China that owners of tungsten concentrate stay attitude of waiting, or sale the material in spot cash. Therefore, if requirement of tungsten oxide, AMT, APT and other tungsten powder products to prepare some at most or can wait for the price trend in very end of July, reported from Chinatungsten Online.

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Imagine a lump of iron the size of a tennis ball. Weigh it in your hand. Now let it drop on to your foot. How does that feel? Now imagine an identical object three times as dense. How would that feel if you dropped it? Would you ever walk again?

That metal is tungsten.

As well as being incredibly dense tungsten is also incredibly hard and has the highest melting point of all the elements at 3,422C.

A century or so ago the world had no use for tungsten - it was almost impossible to shape or work the stuff. Yet now we use tungsten to write with, to traverse glaciers, to emit X-rays and to destroy buildings without the use of explosives.

To understand how this happened, we need to understand the competitive forces that have shaped everything in our world, and where better to start than a mystery at the heart of the evolution of life?

For the first four billion years, life didn't actually do much evolving. Organisms were small, simple and fairly rare. Then around 500 million years ago something extraordinary happened - the fossil records show there was an incredible explosion of life.

"Tungsten makes very good bullets," the military analyst Robert Kelley said. "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.


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Tungsten market: domestic economic environment continued to slump, lack of tungsten market funds, business operations are not active, despite the current market is still more inquiry, but the actual volume was light, the buyer continued to actively keep the prices down, the seller cheap goods will go low, The two sides deadlocked, the high cost of tungsten concentrate the stock market, low-cost shipping that is facing a loss, so shipments will hold stocks lower part of even still working capital, the desire to purchase low-cost supply, in order to lower the average inventory cost, lower loss. Mainstream waste tungsten market remains steady sidelines, despite the weakening of the business mentality, but the price is not strong willingness mostly, of course, no shortage of cash-strapped businesses part of low-cost shipping, expected short-term will continue to play tug of war between two or more in price.

Mainstream waste tungsten market remains steady sidelines, despite the weakening of the business mentality, but the price is not strong willingness mostly, of course, no lack of tension in the business part of the funds cheap shipping. Expected in July and August, tungsten City or weaker overall market run, tungsten scrap prices also fell slightly possible.

Tungsten scrap market continues to hold steady on the sidelines. Currently waste tungsten drill mainstream transaction price excluding tax is still concentrated in the 188-190 yuan / kg, domestic waste tungsten blade 169-171 yuan / kg, imported blade 179-181 yuan / kg. 30-40 degrees grinding tungsten scrap material concentrated near the trading price of 1.6 yuan / kWh, 50-70 degrees concentrated in the vicinity of 1.76 yuan / kWh, more than 70 degrees centered around 1.85 yuan / kWh, but the individual businesses that 1.72 yuan / kWh you can receive 80 degrees sources.

Overseas tungsten City steadily. 23 evening MB ferrotungsten Rotterdam quote 41.5-42.5 U.S. dollars / kg tungsten, steady. Paratungstate Europe quoted 360-370 U.S. dollars / metric ton, steady, Hong Kong offer $ 361-370 / t degrees, low, dropping $ 4. As the European market into the summer break season, very weak overseas demand, the overall turnover deserted, expected short-term overseas tungsten City or continue weakening trend.


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New high-speed adjustable tungsten carbide boring tool came up with a University of Technology, who designed and manufactured a new type of high-speed machining to adapt adjustable boring tool. Under normal circumstances, a double-edged effect for rough machining boring tools are good. Currently on the market supply of double-edged sword boring most of its structure is similar: that is equipped with two knife caught in the cutter body, by means of a cylindrical screws to fasten the serrated gripping surfaces. When the centrifugal force generated by the rotation head is received by the screws and the serrated surface of sufficient size, even when the changes of improper tightening, relying pressurized cylindrical surface of the locking screw, the holder purging phenomenon does not occur. But in fine boring, the situation is quite different kind. Larger adjustment range pole fine boring tools, when the ordinary structure, when the speed reaches 10000r/min. Significantly decreased its processing results. Especially in modern machining centers, when speed is greater than 6000r/min be more boring, prone to howling and flutter, affecting the accuracy and surface quality of the hole.

By experiment, it has been found that the imbalance is at the root tip of the above problems. The reason is so unbalance occurs arbor strain, presetting tooling holes out there is a big error in diameter and accuracy. For the amount of overhang of the tool is longer, the surface roughness Rz value to 3 ~ 6μm. To address this problem, responsible for development and testing to design a re-tune the pore size, from the structure of compensation can automatically feed the balance of the new high-speed adjustable tungsten carbide boring tool.

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Tungsten market: recent domestic economic environment remains in the doldrums, tungsten downstream demand remained weak, tight liquidity market businesses generally. Tungsten concentrate prices almost bottomed out, buyers bargain Inquiry increased, but traders reluctant to sell, the actual turnover scarce, price is relatively stable, more tungsten scrap some traders stock market, worries about the market outlook began to increase, the proposed recent shipments may be appropriate, tungsten market is expected in summer or difficult to have a big breakthrough.

Recent domestic economic environment remains in the doldrums, tungsten downstream demand remained weak, tight liquidity market businesses generally. Downstream manufacturers and product unmarketable because of funding constraints, while procurement is not active, actively lower prices; Scheelite high cost stock traders, shipping basically are faced with upside risks, so low will ship, and try to purchase low-cost supply of working capital , with low price and reduce risk.

It is understood that, because the market generally facing funding constraints of this problem, so now many products are tungsten cash transactions, especially tungsten ore, non-cash does not ship. Due to the current inquiry was okay, less low-cost supply, resulting in the difference of 55-65 grade tungsten ore pulled a small, 55-grade tungsten concentrate purchase price is 105,000 yuan / ton, 60 more than the price buyers are willing to accept 10.5 -10.6 yuan / ton.


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Researchers in China have taken a major step towards overcoming one of the main hurdles that is hampering the exploitation of carbon nanotubes for many high-tech applications – how to synthesise chirally pure samples.

The chirality of a single walled carbon nanotube (SWNT) is defined by the diameter of the tube and the wrapping angle, or twist (m), expressed as the index (n,m). Slight changes in these parameters can lead to markedly different properties, so being able to produce a single chirality on demand would represent a major step forward. So far, however, this has proved challenging.

Now, researchers led by Yan Li of Peking University have developed a nanocrystalline tungsten-containing alloy catalyst that that produces SWNTs with more than 90% uniform chirality of the form.

Chemical vapour deposition (CVD) methods of producing SWNTs rely on a carbon-containing vapour, such as ethanol, attaching to nanocrystals of a metal-containing catalyst, whose structure largely determines the chirality of the resulting nanotube. Typically these catalysts contain mixtures of metals such as iron, nickel, copper or cobalt.

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Tungsten market: Tungsten City continued weak run, demand continues to slump dragged down by excess supply, tungsten prices steady kicked upstairs, thinly traded, and only a small amount of the transaction are also trading, APT market downturn in overall demand, market inquiry single-less, if there is no long-term acquisition of APT do inventory, market transactions or worse than tungsten concentrate. Sodium tungstate increasingly weak demand, the overall market showed a downturn trend, manufacturers or reduced sodium tungstate run, or suspend production sidelines ahead, manufacturers sluggish sales, is expected this week tungsten City or weak die hard.

This week APT overall market demand is low, the single market exercise less, if there is no long-term acquisition of APT do inventory, market transactions or worse than tungsten concentrate. Currently focused on the trading price of 16.3-16.6 yuan / ton. Expected this summer, APT weak market or mainstream steady run. It is understood that the majority of manufacturers are compressed APT production operations, some manufacturers even run cut edge becomes improved production equipment to meet increasingly stringent environmental requirements.

Downstream market due to lack of pigment started, sodium tungstate increasingly weak demand, the overall market was sluggish trend, manufacturers or reduced sodium tungstate run, or suspend production sidelines ahead, manufacturers sluggish sales, the main supply and old customers long-term cooperation, new orders difficulties.


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