Why Tungsten Heavy Alloy Is Adopted in Military?
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- Category: Tungsten Information
- Published on Tuesday, 22 January 2013 16:13
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Nowadays, tungsten heavy alloy is increasingly adopted as the raw material to make parts of military products, such as bullet, armor and shells, shrapnel head, grenade, hunting gun, bullet warheads,bulletproof vehicles, tank panzers, cannons, firearms, etc. A major use for tungsten heavy alloys is in kinetic energy penetrators, where they are in direct competition with depleted uranium (DU).
Recent investigations conducted at the Army Research Laboratory show that DU’s superior properties resulted from its ability to localize shear during ballistic penetration events. Therefore, it was argued that if localized shear can be imparted to tungsten heavy alloys, these alloys would exhibit penetration performance matching that of depleted uranium (which had become an environmental problem).
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Advantage of Tungsten Alloy Darts Barrel
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- Category: Tungsten Information
- Published on Tuesday, 22 January 2013 15:59
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Dart Sets
A dart comprises of four basic parts, a point, a barrel, a shaft (or stem) and a flight. Of these four parts, the most crucial one is the barrel. This is the part of the dart you grip when you throw and it also gives the dart its weight. The shape of the barrel will vary depending on where the weight is concentrated. If the barrel is the same thickness all the way down the weight is distributed evenly, a torpedo style barrel is heavier at the front and a barrel which is thicker in the center has the majority of its weight concentrated there.
Tungsten Alloy Darts billets & Barrels
Tungsten is denser than brass, in other words if you had two equal amounts in volume of tungsten and brass, then the tungsten would be twice as heavy (2.15 to be exact). The advantage of this is you can achieve the same weight as a thick brass barrel, but the tungsten barrel would be a lot slimmer. This would be a lot more beneficial to a competent dart player as this leaves a lot more room in the treble bed when darts are grouped closely together, making scoring easier.
Tungsten Darts
Tungsten darts come in a variety of weights from about 16 grams up to around 30 grams. It is important when choosing a set of darts that you get the opportunity to try out as many as possible before deciding on a set. The main thing is you feel comfortable when throwing them. Once you find those perfect darts, it may be an idea to purchase an additional identical set just in case they get lost or stolen. If your game does go a little stale or you are striving for improvement, don't be afraid to change your darts.
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The Major Applications of Tungsten Heavy Alloys
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- Category: Tungsten Information
- Published on Tuesday, 22 January 2013 14:45
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1, Radiation shield, collimator, nuclear shielding, beams top, PET syringe shield, vial shield, isotope container, FDG container, multi leaf collimator ,
2, Balanced part; tungsten sinker bar, heavy metal boring bar, yacht, sailboat, submarine and other vessels crank camshafts, holders for Well Logging, Racing Weights. vibration damping and dynamic balancing. Tungsten sinker bar, Tungsten bucking bar, Tungsten boring bar, Tungsten Sinkers, tungsten alloy counterweights for golf and tungsten alloy dart parts spheres, cubes, and projectile shapes
3, High-temperature die, Electro heat , brass and copper, Tooling for low-pressure die-casting of aluminums and brass, Hot upsetting dies, Filler rods for die repair,
upsetting anvil block, electrical rivet
4, Shrapnel head; Penetrators
5, Electrical contact;
6, Balanced ball for missile and plane; golf and tungsten alloy dart parts spheres, cubes, and projectile shapes
7, Core for amour piercing bullet measurement
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Tungsten Alloy: The Best Choice of the Shotgun Ammunition
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- Category: Tungsten Information
- Published on Tuesday, 22 January 2013 15:28
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Shotgun Ammunition : What is it?
Shotgun ammunition are the bullets or shells used in shotguns. They are driven out of their shells when the shotgun is fired. They are usually available in the form of big, lead slugs or as cartridges made up of hundreds of tiny, lead pellets ideal for hunting birds. A single projectile contained in a shotgun shell is called a slug, while a shell filled with multiple pellets is called a shot.
Types Of Shotgun Ammunitions
Kinds of Shotgun Ammunitions include the following:
Buckshot loads
Buckshot loads are shotgun shells that contain lead balls with a large diameter.
They are commonly used for self-defense and big game hunting.
They can contain up to up to 27 balls or pellets measuring .24 to .36 inch.
They are considered all-around defense shots because of their large lead pellets.
They come in different diameter sizes with 000, 00, 0, #1, and #4 being the most popular.
The larger models offer effective penetration and a greater range.
Those used by law enforcers offer fast follow-up shots instead of full power.
Birdshot loads
Birdshot loads are shotgun shells that contain pellets with a small diameter.
They are commonly used for bird and waterfowl hunting.
They are considered field loads.
They usually have poor stopping power, but they work well at close ranges, usually from 20 to 30 feet.
They are usually recommended for self-defense.
They behave like buckshot loads when shot at close range—they tend to be locked into the shotgun’s shot cup.
Rifted slug loads
Rifted slug loads are shotgun shells that contain bullets made of solid lead.
They are single projectiles similar to rifle bullets.
They have ridged sides that provide stability and rotation during flight.
They offer excellent stopping capabilities.
However, they do not offer accurate hits because they require carefully aiming.
They come in different types including sabot-type slugs, Foster, and Brenneke.
They are ideal for targeting shots in long distances.
Choosing Shotgun Ammunitions (Buying Tips)
Length: For a more powerful and accurate shooting, choose shotgun ammunition with a length of three-and-a-half inches or more. As a rule, the longer the shotgun ammo, the more powerful they are. The length of shotgun ammunition is measured in inches based on the firearm’s hull length.
Non-toxicity: Due to environmental issues, many states and areas prohibit the use of lead ammunition in waterfowl hunting and upland bird hunting. For environment-friendly shotgun ammunition, choose those made with non-toxic properties such as steel, tin, bismuth, tungsten-matrix, tungsten-iron, and tungsten-polymer materials.
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Cutting Tool Applications Aid in Machining Tungsten Heavy Alloys
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- Category: Tungsten Information
- Published on Tuesday, 22 January 2013 14:30
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Tungsten Products supplies a number of industries with a difficult-to-machine material--tungsten heavy alloys. The heavy alloy products produced by the company provide a special combination of density, mechanical strength, machinability, corrosion resistance and economy. Unfortunately, the positive aspects of this material can also provide some unique challenges during machining.
Randy Shank, Stellram service engineer, and Nick Gaten, global milling manager, recently improved Tungsten Products' machining operation with some new grades and geometries. A new high positive, -441 milling geometry, along with a shell mill using octagonal inserts, was tested on a rotary-wing aerospace part for reducing vibration and counterbalancing. This new geometry, designed for aluminum and titanium operations, provides freer cutting and reduces the "suction effect" normally associated with higher helical geometries.
Machining tungsten heavy alloy is similar to machining gray cast iron, because the material is highly abrasive, with the chips being discontinuous. Carbide tools should be used for milling, turning and drilling. Cutting speeds and feeds arc generally less than when machining cast iron, and the use of coolant is suggested for roughing but is not required when finishing. Unlike machining cast irons, where chipbreakers arc rarely needed, tungsten requires positive edges to prevent edge build-up.
Many of Tungsten Products' customers are in the medical and aerospace field and require extremely tight tolerances. Applications for these materials range from therapeutic medical radiation shielding, aerospace weights and counterbalances, helicopter rotor applications, and down hole logging, to recreational applications such as golfing, racing and firearms.
A new precision ground geometry from Stellram, the 3F, offered a perfect solution for some of the precision machining required on these components. The 3F, like the 441 milling geometry, is a high positive geometry with sharp edges and small nose radii. It is intended for high temperature alloys and aluminum.
This geometry, along with a new TiAIN grade, SP3 064, and a 0.003 inch nose radius, increased tool life by nine to 12 times. Another turning application with the same geometry and grade allowed a 20 percent increase in speed and a 50 percent increase in feed with 40 percent longer tool life.
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