2015年9月29日星期二

Tungsten Barrel Shape

The barrel forms the main part of a dart. When we are speaking of "buying a (new) dart" we mean getting a new dart barrel. Nowadays barrels are available in almost every possible shape, with a wide selection of knurl or rings on the surface for a comfortable and safe grip.
The main tungsten dart Barrels' Shapes are:
- cylinder
- ton
- torpedo
The selection to the left shows tungsten dart barrels with 2 threads (soft tip), to the right are fixed-tip steel tungsten dart barrels.
It's not possible to say which one is the "right" one. Based on a very theoretical reasoning the long cylindrical tungsten dart barrels could be the best of them because it is the slimmest and allows the tightest grouping. Good for 140s and 180s. But this reasoning doesn't help you when you are not able to handle such a barrel. Selecting the right shape is a matter of personal preference. Choose what feels comfortable for you. This is much more important than an abstract or "academic" reasoning about theoretical advantages or disadvantages of some shapes.

We appreciate very much to receive your particular designs, and always try all out to meet any specific requirement. The motto for our company is that, there never be minimum order, but any one could bring to us the most potential buyer.

Tungsten dart barrel weight

Tungsten dart barrel weight is a never ending story. A lot of people want to know which weight they should throw, which weight is the most common one, what's the average weight and so on. There is no right answer to these questions. For the "average weight" question there probably is an answer, but it doesn't make much sense.
An example of two world champions:
Dennis Priestley throws 14 gram darts.
Raymond van Barneveld throws 26 gram darts.
If you ask the average question now the answer will be 20 grams, but does this make sense when the weights vary that much?
For a beginner steel dart player I recommend a tungsten dart barrel weight between 22 and 25 grams, which is slightly on the heavy side. The reason is that you need to develop a basic throwing skill in order to reach a certain initial level of play with darts on the heavy side. You would probably reach such a level a bit faster with lighter darts, but lighter darts don't force you to develop a somehow decent technique which will make later improvement a lot harder. Heavier darts also forgive slight technical inconsistencies (in other words: errors) better than lighter darts -- I like to tell heavier darts more "good-natured" because of this. The lighter the dart the more sensible it reacts to what you are doing -- slight intentional adjustments as well as slight technical errors or deficits.
Once you have got some darting experience and a decent technique you may find the heavier dart not that convincing any longer because of its good-natured behavior. If you then think you could use a dart that reacts more sensible you should consider going lighter.
Soft tip players won't have that much of a choice for their dart weight. The limit set by the machine operators and leagues usually is below 20 grams. If you are a beginner in soft tip the only advice I can give you concerning the weight of your darts is start at the maximum allowed weight. 

We appreciate very much to receive your particular designs, and always try all out to meet any specific requirement. The motto for our company is that, there never be minimum order, but any one could bring to us the most potential buyer. 
                

Tungsten darts barrel materia

Today's standard material is Nickel-Tungsten. Tungsten is a very dense material, so tungsten darts are with considerable weight can be made quite slim. The invention of tungsten dart barrels had a big impact on the sport. With the new dart barrels, it is possible to achieve much better grouping than before, and the averages in pro games have improved dramatically. It is not an overstatement when this development is referred to as "the tungsten revolution".



Before the tungsten revolution, dart barrels were mainly made of brass. Brass dart barrels are still used by some players because they are much cheaper than tungsten. But brass dart barrels are ancient technology now, so I can't recommend them.

Because of technical difficulties with manufacturing 100% tungsten darts are not available. All "tungsten" darts you can buy are in fact made of tungsten alloys, with Nickel-Tungsten being the most common one. When you buy a dart the amount of tungsten in the alloy is given by a percentage number. So a common "80% Tungsten" dart has 80 percent tungsten and 20 percent Nickel, Copper and/or Ferro. Tungsten darts are available from 80% to over 90%. The more tungsten the slimmer - and the more expensive - the tungsten darts are. If the high-percentage tungsten darts are worth the higher price is an open question. Personally I think that 80% tungsten dart barrels are good enough for almost everyone.

Remember: the only benefit from a high tungsten share is that the dart barrels can be made slimmer than a dart with the same weight and a lower tungsten share. In no way do higher tungsten percentages indicate some sort of overall better quality or better machining.


2015年9月28日星期一

Tungsten darts

Tungsten is an extremely dense metal, considerably more so than brass or nickel; this increased density allows more weight in a smaller (thinner) barrel, making close grouping easier while maintaining the weight and minimising bounce-outs. These high-density tungsten darts resist wear far better than brass or nickel. Tungsten darts are recommended for all darts players who have played competitively at some point and are the darts used by all professionals because having all of the darts mass concentrated into such a small, thin area vastly enhances the control of the dart. When buying tungsten darts, it is important to pay attention to the percentage of tungsten in the dart barrels because it is central to the quality of the dart; in general the higher the percentage the better, and more expensive, the dart.

2015年9月9日星期三

Tungsten Alloy is an Excellent Material for Use in Crankshaft Balancing

Tungsten heavy alloy means it can be used to produce compact, highly durable weights for use in crankshaft balancing. Tungsten alloy weights can be placed in the precise location where 
they are needed to provide optimum performance. The fact that tungsten alloy balance weights are smaller than equivalent steel weights also means that external balancing may not be required in engines where internal space is limited.

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Tungsten alloy Vehicle Weight

Tungsten alloy could used for chassis and rail weights for high performance vehicles. Weights are made from our heavy metal tungsten alloy. These weights have a density that is 150 that of
 lead. 

The material is not toxic or as soft as lead, making it the perfect choice for balancing vehicles or  meeting weight requirements. Car numbers can be permanently machined into the material
for identification purposes. 
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Tungsten Alloy Weight Typical Applications

Weights and Counterbalances for aircraft control surfaces and rotor blades, guidance platforms, balancing of flywheels and turbines, vibration damping governors, fuse masses, and weights
 for selfwinding watches. Because of the physical properties of high density metal, it is often used as both a weight and structural member.

 Used extensively to balance crankshafts in high performance engines. Individual weights are stocked. See our weight chart for formulas and information to solve balancing problems.

 tungsten alloy crankshaft

Tungsten Weights and Tungsten Counterweights

From the tiny, precise tungsten weights in self-winding watches to the massive, perfectly-balanced rotors on an aircraft, the unique physical properties of tungsten weights and tungsten counterweights bring exceptional quality to a variety of applications.

Tungsten weights and tungsten counterweights are currently adding value to:
aircraft control surfaces
aircraft rotor blades
guidance platforms
balancing of fly wheels and turbines
vibration dampening governors
fuse masses weights for self-winding clocks and watches
747 wing tungsten counter weights