US development of new tungsten alloy penetrator is expected to replace depleted uranium alloy

According to the China Defense Science and Technology Information Network reported that the US is expected to replace the development of a new type of armor-piercing depleted uranium, tungsten alloys ferrochrome.

University of Massachusetts (MIT) researchers have developed a new type of tungsten powder metallurgy ferrochrome alloy W-7Cr-9Fe, can replace the depleted uranium penetrators alloys. Test results show that, W-7Cr-9Fe alloy nano-indentation hardness up to 21 GPa, which is about twice the nanocrystalline iron-based alloy or coarse-grained tungsten, much higher than the current commercial tungsten alloys.

During the preparation of this alloy are: first nano crystalline powder, then made into a desired shape. Among them, the use of high-energy ball milling the powder is prepared by powder metallurgy process, including the repeated shear prompted alloy powder mix, accompanied by heat-activated recovery process, the alloy to return to equilibrium.

The molding process using an electric field assisted sintering hot pressing process, the researchers noted that when the processing time of 1 minute, the temperature is 1200 ℃, the alloy crystal structure obtained is good, and the maximum hardness. The long processing time and high temperature leads to the metal grain coarsening, strength is lowered. Micrographs show, W-7Cr-9Fe alloy grain structure prepared by MIT researchers can reach 130 nm.


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Tungsten City needs a little warmer, a slight increase in willingness to buy goods traders

Tungsten market: Chinese New Year approaching, the downstream tungsten smelter home late phased stocking, market inquiries increased slightly; tungsten City needs a little warmer, traders, hunters will to a slight increase in potential buyers, tungsten ore, APT low reduction inquiry, then it price, buyers and sellers deal remained deadlocked, the spot is still a lot of the actual transaction, expected to near or relatively strong tungsten prices, the possibility of a slight upward.

Read more: Tungsten City needs a little warmer, a slight increase in willingness to buy goods traders

By the end of two days stocking increased slightly by tungsten market inquiry

Tungsten market: It is understood that the end of January tungsten smelter will come home later this month shutdowns, increased by the end of two days of stocking, slightly increasing market inquiry, therefore the time of signing the order earlier this month, and the price is relatively orders last month a slight increase, but by the end demand is low, the double pressure of raw materials inventory constraints, resulting in spot market goods less, distribution market opens inquiry is still expected this month or tungsten firmer commodity prices, but the upside is limited.

Read more: By the end of two days stocking increased slightly by tungsten market inquiry

Tungsten ore cargo operators reluctant to sell sentiment thicker, increasing the spot market inquiry

Tungsten ore cargo operators reluctant to sell sentiment thicker, increasing the spot market inquiry, the inquiry relative to the end of December and a slight increase, the inquiry raised 2000 yuan / ton. It is understood that, in December 2014 low 60 wolframite Inquiry at 7.7-7.9 yuan / ton, the current inquiry wolframite concentrate in 80,000 yuan / ton, the lowest it has a small amount of 78,000 yuan / ton.

Analysts believe that the reason for the recent rise of tungsten concentrates are: First, the Spring Festival approaching, the downstream tungsten smelters have carried home by the end of stocking, market inquiries increased slightly; secondly, near the bottom of the ore prices, traders and high-priced cargo operators, bargain increased willingness to buy; and finally, holding business continued reluctance to sell, no cargo cover, not buy cheap tungsten ore, had raised the inquiry.


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Clutched goods not hold stocks, tungsten steel scrap prices steady

Although the agency quoted the crash, but the scrap tungsten market prices remain stable, mainly because traders goods clutched in your hand, do not ship, resulting in spot market goods less, still Inquiry distribution market opened, but less cargo, the middle traders operation more difficult, by this support and tungsten steel scrap prices steady.

Mainstream tungsten steel scrap prices steady, around Christmas and then the specific price is still relatively slight rise, mainly because some manufacturers were late stocking, less cash, big traders to receive scrap tungsten steel, had raised the inquiry. It is understood that before distribution market scrap tungsten drill mainstream 157-159 yuan / kg, now scrap tungsten drill mainstream 158-160 yuan / kg, slightly rose 1 yuan / kg.


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