Grip a Shorter Barrel

Not all kinds of grips are usable on different kinds of barrels. So it's obvious that longer barrels force a more finger grip, while less fingers must be used for short barrels (well, that's just simple-minded reasoning). Not only do you have to find your right grip, you also have to find your right barrel. These things can of course only be seen combined, and reversely. Just another issue of personal preference.

The picture shows thatgrip a shorter barrel is often no problem to use the same grip on a different dart. 3 fingers touch shorter barrel the barrel which is more ton-shaped and shorter -- 4 fingers wouldn't fit on the dart here.

 

 

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The Pencil Grip

Pencil - Phil Taylor: Phil holds the dart in the common pencil-grip. This grip is as good or as bad as any other one, as long as you can keep the dart pointing forward and not too much sideways. The pencil grip is the second most used after the lot of basic grip variations. It usually requires a thin cylindrical barrel, like used by Phil.

Wide open hand - Dennis Priestley: Dennis used to keep his fingers in a nearly vertical shape and does all the required stabilization only by his thumb. He closed the hand a bit more when I last saw him an video, but he is still the one with the most open hand I know. The grip looks very loose, a good advantage when it comes to exact release, but also a good chance to lose control in accelerating. How he maintains his touch with this grip is a complete miracle to me and seems to be only known by him. When I tried this grip I actually had problems hitting the board. He is either naturally gifted with it, or he has worked on it for years. A grip on the extreme side. Dennis uses a thicker more ton shaped barrel, somewhere between Phil Taylor and John Lowe.

The pictures show the "pencil" grip from different angles.The pencil gripis widespread and good to use, at least good enough for world champ Phil Taylor.

 

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Low Co Ultrafine Grain Tungsten Carbide Ball WC Grain Suppression

Low Co ultrafine grain tungsten carbide ball has hardness, red hardness, wear resistance, than conventional ultrafine grain tungsten carbide ball higher, in the field of precision mechanical, thermal recovery wells, which are more unique advantages.

Low Co ultrafine grain tungsten carbide ball of WC grain size is small, large surface area, low Co content, the amount generated in the liquid phase sintering process is far less than conventional tungsten carbide, WC particles are difficult to be completely wetted liquid alloy sintered densification difficult; and ultrafine grain tungsten carbide ball of choice WC powder and Co powder small size, high activity during the sintering process is prone to the phenomenon of abnormal grain growth, thus losing the properties of ultrafine-grained materials. In order to suppress the ultrafine-grained WC grain growth, there are mainly two ways, one is to add grain growth inhibitors, such as VC, Cr3C2, Mo2C, TaC, NbC and TiC and their appropriate combination, but the results achieved are not satisfactory; the other is the use of low-temperature sintering process quickly, minimizing the sintering temperature, sintering time shortening, such as spark plasma sintering, microwave sintering, SHS, the effect is more obvious.




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WC-Co Cemented Tungsten Carbide Ball Structure and Properties

Because of WC-Co cemented tungsten carbide ball with high hardness, high strength, high wear resistance, low thermal expansion coefficient, relatively good oxidation resistance and corrosion resistance and other characteristics, making it widely used in corrosion and high temperature and wear field. Because cobalt and tungsten carbide has the best wettability (contact angle is zero) to cobalt as a binder sintered carbide best overall performance, therefore, WC-Co cemented tungsten carbide ball got first the most in-depth research and application.
WC with high hardness, Rockwell hardness of up to 94 HRA, and has excellent ductility and Co, and for very good wettability WC, tungsten carbide can promote densification. The combination of WC and Co cemented tungsten carbide ball made under stress conditions, the skeleton formed by the WC grains can withstand great pressure, exhibit high hardness, and Co as a binder phase through deformation energy absorption, inhibit crack propagation, showing high toughness. So WC-Co cemented tungsten carbide ball also has excellent transverse rupture strength and hardness, has maintained a wide range of applications.


tungsten carbide ball


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Description of Tungsten Bucking Bar

Bucking bar is a work tool received behind work surfaces to provide a backing member in applying impact fasteners and including intermitted toolhead and handle parts with a low-recoil impact-absorbing spacer provided there between to take shock loads.

Bucking bars are used on the backside of a metal rivet to counter the force of the hammering on the other side. They also can be used to absorb the force of rivet guns, reducing the vibration of bucking.

Bucking bars used to form bucktails on rivets. And come in many different shapes and sizes. They are normally made from an alloy steel similar to tool steel. The particular shape to be used depends upon the location and accessibility of the rivet to be driven.

The size and weight of the bar depend on the size and alloy of the rivet to be driven. Under certain circumstances, and for specific rivet installations, specially designed bucking bars are manufactured locally

Tungsten Heavy Alloy bucking bars are resulting in a bucking bar of the same weight but half the size. Bucking bars are used in rivet setting to upset the shank of the rivet. Tungsten Heavy Alloy bucking bars reduce the recoil when reflecting the impact back to the rivet shaft.

Higher density reduces vibration and kick back while bucking. Take a cue from the pros and use what they use. We carry a full line of standard bars and can custom build bars to your specifications. All bars have smooth faces and rounded edges and corners for ease and safety in handling.
Contact us for more information about tungsten heavy alloy bucking bars! Any orders or inquires will be greatly welcomed!

According to the investigation for different bucking bars of the same shape but different materials and mass characteristics, use of heavier but same sized tungsten bucking bars can reduce vibration transmission to the hand.

In a word, tungsten bucking bars are VERY useful for bucking rivets and will make your life much easier in the build process.

tungsten-bucking-bar


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Yellow Tungsten Oxide Chemical Property

Chemical Formula:WO3
Molecular weight: 231.85
Density: 7.16 g/cm3
Tungsten outer electron configurations: sd46s
melting point: 1473 ℃
Solubility: insoluble in water, insoluble in acid, slightly soluble in HF, soluble in hot alkali, ammonia
Hazardous characteristics: violently reacts with halogen compounds such as bromine pentafluoride, chlorine trifluoride
Hazardous combustion products: harmful toxic fumes
 

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Tungsten Trioxide Films

Tungsten trioxide films have been shown to have applications as the sensing element in gas sensors. One of the most important part of the gas sensor is gas sensitive element. The sensor's sensitivity, selectivity, to a large extent dependent, depends on the performance of gas sensitive element. The general gas sensor is thin film material. Study on tungsten trioxide films began 20 years ago, most is on the electrically induced discoloration, photochromic, electrochemistry and gas sensor performance. For hydrogen sensor, tungsten trioxide films have enormous potential. When tungsten trioxide contacts with hydrogen, the most change is the film colour from transparent to blue. At the same time, changes have taken place in film measured by optical instruments. So tungsten trioxide films are good hydrogen sensitive materials. After doping of rare metal, such as platinum and palladium, hydrogen sensitive properties of tungsten trioxide films can greatly improve. Tungsten trioxide films not only can be used for hydrogen sensor, after doping different elements in different conditions, can also be used for other gases sensitive materials, such as NH4, NO2, H2S, O3 and O2.

Tungsten trioxide films material is a kind of wide application of functional materials, has the very broad application prospects. This material can be used in electrically induced discoloration electrochromics, smart Windows, etc. In different field of application of the film materials have different requirements.
 
 
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Yellow Tungsten Oxide Physical Property

Tungsten outer electron configurations is sd46s, thus, five kinds of valence (+ 2, + 3, + 4, + 5 + 6) can present in the compounds. The valence of W in WO3 is highest in tungsten oxide. Usually the oxygen content of WO3 does not meet the strict stoichiometric ratio, it represented in the form of WO3-x.
 
WO3 formula is quite simple, but its physical properties is very complex.The melting point of WO3 reported in literature is 1473 ℃, but in 1100 ℃ WO3 starts sublimation, sublimation heat is 459.8 kJ/mol. Strictly meet the stoichiometric ratio of tungsten trioxide and without any impurities, WO3 should be transparent insulation. The forbidden band width is about 2.9 eV at room temperature.The WO3-x show n type semiconductor behavior, and forbidden band width is 2.4~2.8eV. Due to the phase change of the structure of WO3, with the change of temperature, resistivity of WO3 will appear jump phenomenon, its resistivity is commonly in 0.3~10 Ω·cm.
 
 
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Throwing Dart Tips

There are a number of basics to keep in-mind when you start throw dart. A steady Stance is very important. Don't lean way over the line to get closer to the board. This one is a tough habit for some people to beat, but to try, as leaning robs the darter of stability. The feet and legs should be positioned in a solid, comfortable, and relaxed stance, with weight distributed to both feet. Excessive leaning places nearly all of the body weight on one foot, tiring the shooter in long matches and damaging accuracy in the short run.

The few inches gained by leaning over the line are simply not worth the huge loss of balance and stability. Plus, leaning lowers the shoulder, forcing one to throw upwards, fighting gravity. Leaning also usually means tensing the major muscles of the body to preserve balance. This often results in a jerky release and poor follow-through, since the body is already off-balance.

A number of long-time players report back, knee, ankle, and foot pain, from spending many years standing on one foot while playing darts. Even in the short run, leaning to throw will cause minor pain in the small of the back. Especially for older players, a firm stance will stop this discomfort.

 

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Yellow Tungsten Oxide History

Yellow tungsten oxide is a kind of tungsten oxide.The production of yellow tungsten oxide should be traced to the discovery of tungsten. Tungsten has a rich history dating back to its discovery during the 18th century. Peter Woulfe was the first to recognize a new element in the naturally occurring mineral, wolframite. Tungsten was originally known as wolfram, explaining the choice of "W" for its elemental symbol. Swedish chemist Carl Wilhelm Scheele contributed to its discovery as well with his studies on the mineral scheelite.
 
In 1841, a chemist named Robert Oxland gave the first procedures for preparing tungsten trioxide and sodium tungstate. He was granted patents for his work soon after, and is considered to be the founder of systematic tungsten chemistry.
 
 
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