How To Use Tungsten In A Sentence
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Oxygen adsorbs on tungsten.
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Allegheny Technologies Incorporated manufactures titanium, hafnium, tungsten, and cobalt.
Eric Lotke: Steel City: Forgotten but Not Gone
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Another type of light bulb you may come across is the tungsten halogen bulb.
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Specialty metals such as stainless steel, silicon electric steel, alloys and tungsten still are produced in the area.
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A multimode optical fiber was used to deliver the light from the tungsten-halogen lamp to the detector.
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Because tungsten is much harder than stainless steel, it is also more difficult to machine mechanically.
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The only other fad I don't think has been debunked yet is the "flechette". 3mm super-strong tungsten darts fired at velocities past 5000 fps.
What do you predict will be the next fad in rifle cartridges? We have done long and skinny, short and fat and long and fat.
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Tungsten has high tensile strength and good creep resistance.
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In contrast with tungsten, hafnium does not interact readily with iron-rich material, but it does combine readily with the elements in rocks lacking in iron.
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Xtools are a fine-looking line of marine tools; as the ISDA blog says, The rust-resistant tools feature tungsten-carbide cutting blades (for cutting braided wire) and foamy, soft-grip ergonomic handles that float.
Boing Boing
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Like many other researchers, we found the large and noisy background signal from tungsten to be a problem.
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After all, it's only chucking three feathered, tungsten-shafted mini-missiles into a board from a short distance.
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It uses Tungsten Plug technology, which helps integrate the various elements in the chip in as small a package as possible.
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Great Basin, Nevada, covering of mineral deposits by lavas, 311-312 gold-silver ores, occurrence in a metallogenic province, 308 tungsten ores, 185
The Economic Aspect of Geology
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The tungsten bronze type solid solution systems, Sr _ ( 1 - x ) Ba _ xNb _ 2 O
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The Yaogangxian, Shizhuyuan, and Huangshaping deposits are an integral part of the important Nanling nonferrous metallogenic zone, an area long known as the richest tungsten province in the world.
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The electrode is tungsten coated and water cooled because of the high temperatures involved.
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It is the second largest branch of tungsten consumption.
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Kistler later prepared aerogels from many other materials, including alumina, tungsten oxide, ferric oxide, tin oxide, nickel tartarate, cellulose, cellulose nitrate, gelatin, agar, egg albumen, and rubber.
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Although tungsten bullets are more expensive to manufacture, it is believed that the extra cost will be more than saved in cleanup costs for Army training and testing ranges.
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Most of the tungsten used thus far in aerospace applications has been in the unalloyed form, which is much easier and less expensive to produce and fabricate.
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'Now, around the beryllium is a cylinder of tungsten-rhenium, which we need for its density We will purchase twelve kilograms in powder form, which we will sinter into cylindrical segments.
The Sum of all Fears
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Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.
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At the present day when tungsten steel, known as high speed steel and self-hardening steel, is revolutionizing machine-shop practice, the work of Elhuyar is of particular interest.
The Catholic Encyclopedia, Volume 5: Diocese-Fathers of Mercy
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The phosphorus-tungsten alloy cast iron would generate some white structure and mottled structure after standing its melt in high temperature.
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To remove soil-derived particulates on the tooth surface, all enamel surfaces were abraded to a depth >100 [mu] m with acid-cleaned, tungsten carbide dental burrs.
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Mineral exploration made important progress in . coal, uranium, iron, gold, silver, copper, nickel, zinc, lead, antimony, tungsten, molybdenum, vanadium, kainite and characteristic non-metal .
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Tantalum is etched by peroxide - the same way it etches tungsten or titanium - by forming its mineral acid, in this case tantalic acid.
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Inside is the chronometer-certified Breitling Calibre 32 movement, and the watch can be purchased with a volcano black, Air Force blue, tungsten gray or stratus silver dial.
A Hot Half Dozen for 2010
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In an incandescent bulb, the filament is made of a thin piece of tungsten metal, coiled to fit inside the bulb; if it were stretched out, it would measure about 6 feet long!
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These steels are usually welded by the gas tungsten arc or the gas metal arc welding process.
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While most bullets have been jacketed with copper-zinc alloy, a variety of other hard metals, including tungsten, have been used.
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Mineral resources are mainly tungsten ore, lead ore, zinc, and clay mineral - based.
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In 1943 tungsten (which they used for their armour-piercing solid shot) supplies from Portugal were stopped and Albert Speer turned over the German stockpile of 1200 tons of uranium ore to replace the tungsten.
Oh. My. God.
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Mineral exploration made important progress in . coal, uranium, iron, gold, silver, copper, nickel, zinc, lead, antimony, tungsten, molybdenum, vanadium, kainite and characteristic non-metal .
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In wire form, tungsten is used extensively for lighting, electronic devices, and thermocouples.
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It's then balanced with heavy inserts of wolfram (the principle ore in tungsten) on both the heel and toe.
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The traditional tungsten filament bulb is the one we've all grown up with.
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There are two kinds of tungsten deposits: wolframite in quartz veins and in scheelite skarn.
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Weldcraft's gas lens product line consists of three main styles - standard size, large diameter and 'stubby' - to fit TIG torches with 10N or 13N series front-end parts and to accommodate tungsten-electrode diameters ranging from 0. 020in (0. 508mm) to 5/32in.
Manufacturingtalk - manufacturing industry news
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Chloride tungsten or titanium passed through hot tube, depositing a film of metal on the carbon; or filaments of zirconia oxide, or alumina or magnesia, thoria or other infusible oxides mixed or separate, and obtained by moistening and squirting through a die, are thus coated with above metals and used for incandescent lamps.
Edison, His Life and Inventions, vol. 2
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The timer initiates the ejection charge which releases and disperses the tungsten projectiles before impact with the target.
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As Warne surely knows, you can't have a serious career as a Test bowler without a hide of tungsten.
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In the beginning, tin, lead, copper, silver, and gold were mined; there was no use for tungsten at that time.
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Copper, zinc, arsenic and tungsten are associated with tin in quartz-tourmaline veins.
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A mix of tungsten and plastic polymer, it's 97 percent as dense as lead and even softer, which results in comparatively loose, long-range patterns.
Heavy Metals
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Certainly tungsten as a metal is much denser than either brass or lead and it really showed in these flies.
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The high melting point of tungsten makes it an obvious choice for structural applications exposed to very high temperatures.
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High frequency directs the arc, cannot produce the phenomenon of clamping tungsten.
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There are also deposits of tungsten, vanadium, tin, copper, and lead.
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A metal additive in the charge, such as titanium or tungsten, gives the flame a sparkling effect.
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There are also certain types of tungsten-tipped circular saw and jigsaw blades available that will work with these products.
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Its melting and boiling points are third highest among all elements after tungsten and rhenium.
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This is especially important for those valuable minerals which exhibit a brittle to very brittle tenacity, such as cassiterite, sphalerite and the tungsten minerals scheelite and wolframite.
Chapter 20
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The tungsten filament of an incandescent light is an example of a wire under extreme conditions.
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The most comprehensive available data on exploration for tin-tungsten is around the Mulberry open pit near Bodmin; a large low-grade deposit.
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The only thing that stood a chance of piercing the frontal armour of the Tiger was the British 17 - pounder gun, a weapon that boasted a revolutionary discarding tungsten sabot round.
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Kyrgyzstan has deposits of gold, coal, bismuth, mercury, antimony, tungsten, and copper.
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`Bruce Medway,' she said, as if tungsten would melt in her mouth.
INSTRUMENTS OF DARKNESS
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For this one, I put two cheap tungsten spots on the other side of the door, and taped white tissue paper all along the opening to diffuse the light.
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Within the space of four short months the Iranians demonstrated a mastery of three different rocket propulsion technologies (liquid, storable liquid, and large diameter solid), three different thrust vectoring technologies (graphite jet vanes, tungsten jet vanes, gimbaled rocket motors), two systems of stage separation, and an embryonic multiple-warhead nose fairing.
More on Iran's Satellite...
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A year earlier, a small company in the Chinese port city of Dalian provided Iran with a range of sensitive materials, including graphite, tungsten copper, tungsten powder, high - strength aluminum alloys and high-strength maraging steel, again for its nuclear program.
U.S. says Chinese businesses and banks are bypassing U.N. sanctions against Iran
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A nanosecond later a small charge would explode, thus releasing the tungsten rod within, which being heavier and harder, would fly into the crew compartment, shatter and fragmentize, quickly wounding, disabling, or simply slaughtering the human beings and any delicate electronic equipment inside.
A Bob Lee Swagger eBook Boxed Set
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Tungsten ores contain tungsten principally in the form of the minerals scheelite (calcium tungstate), ferberite (iron tungstate), hübnerite
The Economic Aspect of Geology
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While most bullets have been jacketed with copper-zinc alloy, a variety of other hard metals, including tungsten, have been used.
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The technology is used to etch small-diameter wire or tubing composed of tungsten-rhenium, nitinol, titanium, stainless steel, and numerous other metals common to the medical manufacturing industry.
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Unlike the bright glare of tungsten lights, these award-winning stories come alive under softer lights and live performances.
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They spray boron and energetic nitrogen atoms onto a clean, heated tungsten surface, held at 250 to 500 volts, in an ultrahigh vacuum.
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His biggest fish (right) was an 8-pounder that inhaled a 3/8-ounce tungsten jig tipped with twin chunk trailers.
Topwater Soft Plastic Toad Lures Catch Summer Largemouth Bass in Matted Grass and Lily Pads
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Kyrgyzstan has deposits of gold, coal, bismuth, mercury, antimony, tungsten, and copper.
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We don't have Zire or Tungsten packaging to hand, but those figures sound about right.
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The most comprehensive available data on exploration for tin-tungsten is around the Mulberry open pit near Bodmin; a large low-grade deposit.
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I’ve used a number of productivity aids/tools though the years and along with technology progression I’ve scaled from a plain calendar, to a Day Planner, through a couple different smaller PDA’s, to my current Palm Tungsten C.
2006 July 06 — Meandering Passage
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Assemble die adopt tungsten steel die, guide wheel have defend jump wire device.
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The disappearance of tungsten minerals from alluvial materials which are undergoing laterization, which has been described in Burma, [32] seems to indicate that the tungsten is dissolved in surface waters to some extent; but in the main it is probably carried completely out of the vicinity and not reprecipitated below.
The Economic Aspect of Geology
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Previous attempts to lower the switching temperature have incorporated low levels of elements such as tungsten, molybdenum, niobium and fluorine.
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Oxygen is a particularly strong embrittling agent for molybdenum and tungsten; nitrogen and sulfur are particularly harmful in wrought chromium.
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The precision-machined tungsten alloy weights perform a critical function in establishing aeromechanical stability of the blade.
The Earth Times Online Newspaper
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World War II brought a tungsten boom, and the bright fluorescence of scheelite made it an obvious target for night prospecting.
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Mordants most commonly used in tissue staining are salts of aluminum, chromium, iron, potassium, and tungsten.
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The metals tungsten and copper both exhibit very high ductilities.
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The refractory metals include niobium (also known as columbium), tantalum, molybdenum, tungsten, and rhenium.
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This area proper is a prominent Chinese mining district known as the Xianghualing polymetallic ore field, and it consists of numerous deposits of tin, tungsten, molybdenum, bismuth, copper, lead, and zinc.
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A small but very important amount of tungsten is also used to make the filament in incandescent light bulbs.
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In these occurrences the tungsten mineral is almost invariably scheelite, and is associated with calcite, garnet, pyroxene, and other silicates.
The Economic Aspect of Geology
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Tungsten, which is unalloyed, is unlikely to cause allergic reactions.
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A coating of zinc on steel can be used and the aluminum welded to it by the gas tungsten arc welding process.
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Some children with congenital heart abnormalities have fine tungsten spirals inserted into the heart to plug small holes between the cavities of the two ventricles.
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Most of the tungsten used thus far in aerospace applications has been in the unalloyed form, which is much easier and less expensive to produce and fabricate.
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Industries: construction and construction materials; mining (coal, copper, molybdenum, fluorspar, tin, tungsten, and gold); oil; food and beverages; processing of animal products, cashmere and natural fiber manufacturing
Mongolia
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The metal can be, for example, titanium, tantalum, chromium, aluminium or tungsten.
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Mineral extraction is important: crude oil is refined and exported, there are large coal, tin, and iron ore deposits, and China leads the world in tungsten ore production.
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In January this year, U.S. private equity group Mount Kellett Capital Management LP bought a 20% stake in Masan Resources, which operates a tungsten mining project, for $100 million.
KKR to Buy 10% of Vietnamese Sauce Maker
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X rays emerge when the electrons, accelerated by a strong electric field, slam into a tungsten target.
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The most comprehensive available data on exploration for tin-tungsten is around the Mulberry open pit near Bodmin; a large low-grade deposit.
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Conventional ion sources use a tungsten filament to inject the gas containing the dopant with electrons.
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Tiny tungsten bulbs embedded in the ceiling dropped a dozen cones of light into the room.
THE RHYTHM SECTION
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The only problem with using the FL-D filter to correct for fluorescent lighting in a cityscape at twilight is that there is also tungsten lighting in the city.
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Tungsten ores contain tungsten principally in the form of the minerals scheelite (calcium tungstate), ferberite (iron tungstate), hübnerite
The Economic Aspect of Geology
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Tungsten is retrieved from the ore minerals scheelite (CaWO4, calcium tungstate) and wolframite ((Fe, Mn) WO4, iron-manganese tungstate).
Tungsten
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Interior designers and architects will want to employ rich, dark finishes and tungsten light sources.
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Recently, experimenters found that adding some tungsten to the compound could drive down the transition temperature.
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Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.
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A hard mask layer comprising tungsten silicide is formed over the first barrier layer.
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Others are blending barium sulfate or tungsten compounds into their material mix to add radiopacity to the extruded products, Shah says.
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The gas tungsten arc welding process is used for the pure columbium and for the lower strength commercial alloys.
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It is a tungsten treat, a darting delight, as Sid Waddell's understudies, who are currently doing most of the commentating, are wont to say.
Darts in the Olympics would be a tungsten treat
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The tungsten filament of an incandescent light is an example of a wire under extreme conditions.
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This is especially important for those valuable minerals which exhibit a brittle to very brittle tenacity, such as cassiterite, sphalerite and the tungsten minerals scheelite and wolframite.
Chapter 20
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Kyrgyzstan has deposits of gold, coal, bismuth, mercury, antimony, tungsten, and copper.
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Scientists speculate that the asteroids would probably be very rich in minerals with a very high melting point, such as iron and nickel or rarer metals like tungsten, osmium, and zirconium.
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The bulletproof windows are gold-plated, the exhaust is made of tungsten, the gauges are encrusted with diamonds and rubies and the exterior has a Kevlar coating.
Prombron: The World's Baddest SUV
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For consumers who want higher lumens, manufacturers offer tactical lights utilizing Xenon or Halogen gas-filled bulbs with tungsten filaments.
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Copper, coal, gold, molybdenum, fluorspar, uranium, tin, and tungsten account for a large part of industrial production and foreign direct investment.
Mongolia
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Tool materials may be high-speed steel, cast alloy, or tungsten carbide.
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For gas tungsten arc and plasma arc the filler metals are not used and the edges are fused.
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In the future, demand for metals like tungsten will outrun supply.
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Edison's efforts to invent electric light bulb did not pan out until he used tungsten wires.
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Magnesium, titanium, zirconium, niobium, tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.
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An incandescent light bulb contains a thin wire filament (usually tungsten) that glows hot when an electric current is run through it.
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A multimode optical fiber was used to deliver the light from the tungsten-halogen lamp to the detector.
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Oxygen is a particularly strong embrittling agent for molybdenum and tungsten; nitrogen and sulfur are particularly harmful in wrought chromium.
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Both wolfram and scheelite are of considerable importance as a source of tungstic acid for the manufacture of sodium tungstate, which is used as a mordant and for some other purposes, and as a source of metallic tungsten, which is used in steel-making.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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At present the required electrons are generated by heating suitable metal wires, typically tungsten, to high temperatures.
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This type of detector typically has limited efficiency because some photons are reflected from the front surface and others are transmitted all the way through the tungsten.
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The filaments of light bulbs are made from tungsten wire.
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Electric arc burns stability, remove tungsten consumption and assuring welding quality the workpiece cleaning function.
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Palm staged a major product launch in the second quarter, debuting its Tungsten and Zire product lines.
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At least ten tungsten minerals are reported, but ‘wolframite’ and scheelite are the only two with significant economic distribution and concentration.
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China also raised the export tax on ferrochromium, ferronickel, ferromolybdenum and ferrotungsten to 20 percent in early 2008, he said.
Mineweb - Daily news headlines
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A tungsten-carbide button with a reverse imprint of the rifling grooves is pulled through a blank by a hydraulic press.
Roll Out the Barrel
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A metal additive in the charge, such as titanium or tungsten, gives the flame a sparkling effect.
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High ceilings with steel and tungsten light fittings, the tables and chairs a design statement in themselves.
THE LAST TEMPTATION
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Tungsten halogen bulbs are actually another type of incandescent bulb; they are often simply called halogen bulbs.
HOME COMFORTS
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It reminded me of a science experiment that involved heating a block of tungsten to light it up.
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Tungsten was discovered in 1758 by Axel Fredrik Cronstadt; in 1781 Carl Wilhelm Scheele isoldated a tungsten oxide, and in 1783 the Spanish chemists (and brothers) Fausto and Juan Jose de Elhuyar first separated tungsten from the mineral wolframite.
Tungsten
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Both the gas tungsten arc and the gas metal arc processes supply this requirement.
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View It » thanks for this interesting article. my only hope is that if somebody committed massive fraud by salting gold with tungsten, then when dealing with that much money, _somebody_ hopefully would have audited the gold. i mean, who would be so foolish to transfer massive quantities of gold without an audit? tungsten weighs close to gold, but would show up on a scale. once the bars are melted down, then the tungsten is visibly seen immediately as it does not bind to gold, so it cannot be circulating in bullion, except from fraudulent singaporian sources that willingly partake in the theft.
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