Tungsten is an extremely dense metal, heavier than lead. It is also very durable, so a high-density tungsten dart resists wear and the grip will last much longer. On softer metal darts, the grooves and rough knurling may wear down fairly quickly from skin acid, friction, and hitting other darts. Originally tungsten was only a small percentage of the dart barrel (40 - 50%), today most tungsten darts are between 80 and 95% tungsten.

Today let’s learn some glossaries of tungsten dart from R to X!

-R-
REDEEMER - A dart, (often a T20) that "redeems" two previous poor efforts.

RIGHT CHURCH - Term for hitting a double or triple, but the wrong number. Also known as "DADDY'S BED"

ROBIN HOOD - When you shoot a dart into the shaft of another.

ROUND OF NINE - Throwing three triples in one turn in Cricket.

ROUND THE CLOCK - Any of a number of game variants where players compete to be the first to hit all the sectors on the dartboard in an agreed order (usually numerical), finishing with the outer bull followed by the bull. In some versions hitting a double entitles the player to skip the next number, with a treble entitling the player to skip two numbers. Also commonly played by single players as a form of practice.

-S-
SCROAT - A dart that is aimed for treble 20, but ends up in double 20.

SET - A scoring method used in many tournaments.

SHAFT - The middle section of the darts that holds the Flight.

SHANGHAI - A score of a single, double and triple in the same number. "Shanghai" sometimes refers to a checkout of 120 (single, treble and double 20, also as "Shanghai 20"). In some games this is an automatic win. This is also the name of a game.

SHARKEY - A non-registered player who has to assume a false identity in order to fill in for an absent player in a league game, e.g. "due to poor turnout, The Arms had to use a Sharkey".

SHUT OUT - When you lose a game without ever scoring in it.

SINGLE BULL - On dartboards configured with a bullseye consisting of two concentric circles, the outer circle is commonly green and worth 25 and the inner circle is commonly red and worth 50 points. Hitting the outermost ring of this type of bullseye is a "SINGLE-BULL". (See also: "BULLSEYE")

SKUNKED - When you lose a game without ever scoring in it.

SLOP - Darts that score, but not where you wanted them.

SPIDER - The metal web that divides the dartboard into sections.

SPLASH - Darts that score, but not where you wanted them.

SPRAY 'N' PRAY - Darts thrown by an irate and less talented player, rather quickly

STICKS - The darts themselves.

STRAIGHT IN - A game that requires no special shot to begin scoring.

STRIKING OIL - Hitting a double bull when 'diddling for the middle' - comes from the black centre of some modern dart boards.

-T-
THREE IN A BED - Three darts in the same triple of a number. i.e. three triple 20's 180!

THROW LINE - The line you stand behind and throw the darts from.

TOE LINE - The line you stand behind and throw the darts from.

TON - A score of 100 in a game of x01. Scores over 100 would be called a "ton-whatever" for example, a ton-thirty would be a score of 130.

TON OF NAILS - A score of 5 where all three darts fell in the 1 bed with 1 dart in the treble 1.

TOP BANANA - Double 20. Usually exclaimed after hitting this bed to win a match.

TOP OF THE BOARD - The numbers on the top half of the dartboard.

TOPS - The double 20 bed. As in "he wants tops for the match".

TRIPLE/TREBLE - The thin inner ring of the dartboard, it usually counts for three times the number hit.

-U-
UPSTAIRS - The upper half of the dartboard

-W-
WET FEET - Standing too close to the dartboard (that is, in front of the toe line).

WEDGE - A section or sections of the dartboard.

WHITE HORSE - Scoring three virgin (untouched) triples in Cricket.

WIRE - Darts that just miss where you aimed but on the other side of the spider.

-X-
X - A double-one out

  Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  sales@chinatungsten.com
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
  Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
  Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten is an extremely dense metal, heavier than lead. It is also very durable, so a high-density tungsten dart resists wear and the grip will last much longer. On softer metal darts, the grooves and rough knurling may wear down fairly quickly from skin acid, friction, and hitting other darts. Originally tungsten was only a small percentage of the dart barrel (40 - 50%), today most tungsten darts are between 80 and 95% tungsten.

Today let’s learn some glossaries of tungsten dart from H to P!

-H-
HAT TRICK - A score of three bullseyes.

HIGH TON - A score greater than 150.

HOCKEY - A raised 1 1/2" board used to mark the throwing line.

-I-
INNING - A round of completed turns by both players, or a turn in a particular game that has innings, like Baseball or Shanghai.

-L-
LEG - A game in a match, as in "the best of five legs", in which each leg is an entire game. Or, in the game of Legs, a stripe on the dartboard.

-M-
MAD HOUSE - The double-1. At least two explanations for the term have been proffered; because it can drive you crazy trying to hit one in a game of x01, or because it impossible to "get out" of the mad house - once a player has a score of 2 the only way to finish the game is by hitting a double-1.

MAXIMUM - A score of 180

MAXIMUM CHECK-OUT - A score of 170 to end a game. treble-20, treble-20, inner bull

MUGS AWAY - Loser of the previous game goes first in the next game.

MURPHY - A score of single-5, single-20, single-1 in a game of x01. Based on Murphy's Law.

-N-
NAIL - Another word for 1. See "Bucket of Nails" and "Ton of Nails".

NINE DARTER - When a player completes a game of 501 in the minimum required nine-darts. This is a very rare event. There is usually a cash prize for professionals throwing a televised nine-darter.

NOT OLD - A score of 37 (usually by hitting a 20, a 5 and a 12). The phrase is believed to have its origins in a Monty Python sketch.

-O-
OCHE - The line you stand behind and throw the darts from.

-P-
PERFECT SCORE - When a player scores a maximum 180 points in one throw of three darts.

PERFECT FINISH - When a player finishes a game with a maximum score of 170. This must be done by scoring treble 20, treble 20, double bull, with only three darts. This is considerably more difficult than hitting a perfect score as the player must break focus to change targets and it can only be done if the player has an exact score of 170 remaining.

PIE - any of the numbered segments on the dartboard.

POPCORN - When the darts land so close to each other, they knock their flights out.

  Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  sales@chinatungsten.com
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
  Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
  Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten is an extremely dense metal, heavier than lead. It is also very durable, so a high-density tungsten dart resists wear and the grip will last much longer. On softer metal darts, the grooves and rough knurling may wear down fairly quickly from skin acid, friction, and hitting other darts. Originally tungsten was only a small percentage of the dart barrel (40 - 50%), today most tungsten darts are between 80 and 95% tungsten.

Today let’s learn some glossaries of tungsten dart from A to G!

-A-
ANNIE'S ROOM - The number One (1).

ARROWS - Another term for darts.

ARCHER - Refers to a player who throws very quick smooth darts

-B-
BABY TON - A score of 95, usually by scoring five 19s.

BAG O' NUTS - A score of 45.

BARREL - The metal body of the darts where they are gripped.

BASEMENT - The double-3.

BOTTOM OF THE BOARD - The numbers on the bottom half of the dartboard.

BOUNCE OUT - When a dart hits a wire on the board flush-on and bounces back off the dartboard. Can be potentially dangerous to spectators who are too close.

BREAKFAST - (or BED 'N' BREAKFAST) A score of 26, made up of a single-5, single-20, single-1 in a game of x01. This is a common score in darts because players aiming for the 20 sector (which contains the highest scoring area on the dartboard) will often accidentally hit the 1 and the 5 sectors, which are located on either side of the 20. The term comes from the typical price of a bed-and-breakfast in times gone by: 2 shillings and sixpence, or "two and six". (See also "CHIPS")

BUCKET/BAG OF NAILS - Landing all three darts in the 1s.

BUCKSHOT - A throw when darts land wildly all over the dartboard.

BULL-OFF - See DIDDLE FOR THE MIDDLE.

BULLSEYE (or BULL) - The bull's eye, which has an Outer Bull and an Inner Bull.

BUST - Hitting more than you needed in an x01 game. The darts do not count and the player begins his next turn on the same score he had prior to.

-C-
CRICKET - In a Cricket game this refers to high scores base on the number of darts scored. For example a triple-20, single-20, single-20 would be called a C-5 because "5 darts" were scored with three darts .
CHAMPAGNE BREAKFAST - Hitting treble 20, treble 1 and treble 5 in three darts (see "BREAKFAST")

CHIPS - A score of 26. (See also: "BREAKFAST")

CHUCKER - A player who just "chucks" the darts at the board, doesn't aim or care.


CIRCLE IT - When a player scores a single digit (less than 10) with three darts, his team-mates would shout out "Circle it!" to the scorekeeper to highlight the terrible throw. A variation on this tradition is to draw a fish around the score, often leading to aquarium-related jokes being aimed at particularly poor or unlucky players.

CLOCK - The dartboard itself, usually in the context of "ROUND THE CLOCK".

CORK - The center of the dartboard. This comes from the cork in the end of a keg where it is tapped. The ends of kegs were used for targets in the game's early days.
COVER - A term frequently used by Sid Wadell, meaning aiming for treble 19.

-D-
DAIRYLEA DARTS - A throw that is 'spread' around the board, named after the cheese spread Dairylea.

DEVIL - The treble-6, so called due to '666', and the fact that it is often hit in error when going for treble-13 or treble-10.

DIDDLE FOR THE MIDDLE - A throw to see who gets one dart closer to the bullseye to determine who throws first in the game. Also known as a "BULL OFF", "MIDDLE FOR MIDDLE" and "OUT FOR BULL".

DOUBLE - The thin outer ring of the dartboard. In standard x01 games, a double counts for two times the number hit.

DOUBLE-BULL - On dartboards configured with a bullseye consisting of two concentric circles, the outer circle is commonly green and worth 25 and the inner circle is commonly red and worth 50 points. Hitting the innermost ring of this type of bullseye is a "DOUBLE-BULL". (See also: "BULLSEYE")

DOUBLE IN - A variant of x01 in which a double is needed to start the game.

DOUBLE TOP - The double 20.

DOUBLE TROUBLE - Not being able to hit the double needed to win the game.

DOWNSTAIRS - The lower portion of the dartboard, usually in reference to the 19s in a game of x01.

-E-
EASY IN - A game that requires no special shot to begin scoring.

EDDIE SHUFFLE - The art of adjusting ones stance or position along the ockey in an attempt to circumnavigate a troublesome 'blocking' dart. Also referred to as The Milk Float.

-F-
FEATHERS -The number 33.

FOGLE - A series of castaway darts thrown with no other purpose than to irritate opponents.

FLIGHTS - The "feathers" of the dart that give it aerodynamic float. Also known as wings.

-G-
GAME ON - Advises all players that the match has now started

GAME SHOT - Signifies that the match winning double has been hit

GRANNY - A lose without scoring, see SHUT OUT

  Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  sales@chinatungsten.com
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
  Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
  Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten Dartboard Measurements

The standard international dartboard is known as the "clock" board. The standard dartboard measurement is 18 inches in diameter and has 20 numbered, pie-shaped segments of equal size, plus the bull's-eye. Each numbered segment has a double ring on the outside perimeter of the scoring area and an interior triple ring (which count as double and triple of that number respectively). The bull's-eye has an outerbull area (also know as the single bull, which scores 25) and an inner bull (also known as a double bull's-eye, which scores 50).

Tungsten Dartboard Regulations

Dart Board Height: 5 feet. 8 inches from floor to the center of the bull's-eye.
Distance from front of the dartboard to the throwing line: 7 feet 9 1/4 inches 8 feet 0 inches for soft tip). To mark the throw line a simple piece of tape will suffice. Major tournaments, however, use a "hockey" which is a thin raised strip of wood approximately 1 1/2 inches high (see image diagram below).
Mounting: Flush to the wall - not leaning like a picture - with the 20 at the top.
Location: Since darts often bounce out of the dartboard, never put a dartboard up near windows or breakables or where anyone could walk between the throwline and the dartboard. Also, if you have a hard floor, such as concrete or wood, you may want to consider getting a dart mat.
The dart scoreboard should be mounted to left or the right of the dart board for easy access.

  Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  sales@chinatungsten.com
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
  Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
  Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

A comparison has been made of thermoluminescence and thermally stimulated current in single crystals of calcium tungstate either doped with impurities or nominally pure but excited by ionizing radiation. Both effects were large in the case of monovalent impurities with glow peaks near 260 °K being characteristic of the impurity and peaks near 160 °K arising from an enhancement of a structure which normally results from radiation damage. Trivalent impurities had a lesser effect with the production of glow peaks near 300 °K. The structures responsible for the prominent glow peaks are suggested to be: 260 °K—monovalent ions in calcium sites, 154/160 °K—oxygen vacancies associated with either a W⁵⁺ or a monovalent ion at a calcium site, 300 °K—calcium vacancies. The occupancy of electron and hole traps is found to be related. This relationship is used to deduce information regarding the excitation mechanism for free holes and electrons in calcium tungstate.

 

Tungsten Powder Manufacturer&Supplier:ChinatungstenOnline-www.tungsten-powder.com
Tel.:865925129696;Fax:865925129797
Email:sales@chinatungsten.com
Tungsten&MolybdenumInformationBank:http://i.chinatungsten.com
TungstenNews&TungstenPrices,3GVersion:http://3g.chinatungsten.com
MolybdenumNews&MolybdenumPrice:http://news.molybdenum.com.cn

A new method for direct synthesis of W–Al₂O₃ composite is proposed. W–Al₂O₃ nanostructured composite has been produced by mechanical milling of ammonium paratungstate (APT) and Al powder mixture at room temperature. The milled products have been characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS).

The XRD and EDS results confirmed that direct reduction of APT to α-W took place after 25 min milling. It was observed that α → β phase transition took place after 24 h mechanical milling. SEM micrographs showed that alumina matrix composite reinforced with W could be obtained by one step MSR (mechanically induced self-propagation reaction) process. X-ray diffraction peak broadening equation confirmed that the mean grain size of these particles was in nanometer range which gradually decreased with increasing the milling time.


Tungsten Manufacturer & Supplier: Chinatungsten Online -http://www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

The possibility of mechanochemical decomposition of ammonium paratungstate (APT) has been studied, and compared with thermal decomposition method. For this purpose, APT powders were milled using a planetary ball mill up to 36 h and under air atmosphere. For thermal decomposition, APT powders were heated for 30 minutes at 300 and 450 °C in air atmosphere.

X-ray diffraction (XRD), differential scanning calorimeter (DSC), and thermo gravimetric analyzer (TGA) were used to study the decomposition progress, and products. The XRD results showed that APT completely decomposed to WO₃ by thermal decomposition, while the final product of mechanochemical decomposition was WO₃ (H₂O)_0.5. According to DSC and TGA results, during thermal decomposition, ammonia and water released in four steps, and leaved WO₃. By mechanochemical decomposition crystal water and ammonia liberated from APT structure, but structural water of APT remained. In both methods, an X-ray amorphous phase was the intermediate product of APT decomposition.




Tungsten Manufacturer & Supplier: Chinatungsten Online -http://www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Cobalt doped ammonium paratungstate (Co-doped APT) precursors for the fabrication of cemented carbides were synthesized by co-precipitation, where W and Co are mixed on the atomic scale. The effect of cobalt content on the reduction of W–Co precursor was studied. W–Co precursors with different ratios of tungsten to cobalt were prepared and calcined at 220 °C for 5 h in air, followed by a reduction in hydrogen gas at 600 and 650 °C for different times. The resulting powders were characterized with respect to phase constituent, specific surface area, particle size, density, and morphology of the reduced powders.

It has been found that the addition of cobalt results in a higher reduction rate toward the metallic phases. However, the particle size of the reduced powders increases with increasing cobalt content, while its relative density decreases. The specific surface area of reduced powders at 650 °C increases for short reduction times, due to reduction of oxides to metal powder, and decreases for long reduction time due to agglomeration of metal powder. Cobalt plays the role as a catalyst during the reduction processing. On the other hand, it promotes the agglomeration of small particles. However, the completely reduced powders were well nanostructured with an average particle size between 20–50 nm.




Tungsten Manufacturer & Supplier: Chinatungsten Online -http://www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

In order to improve the quality of tungsten products and the export need of tungsten wire, the method for producing high purity ammonium paratungstate is under research. In order to reduce producing cost, improve producing efficiency of tungsten, ammonium paratungstate prepared by tungsten concentrate is studied.

Tungsten concentrate preparing ammonium paratungstate mainly uses soda lye under alkaline leaching tungsten concentrate. During the processing procedure, the alkaline using amount is 2-3.5 times more than the theoretically amount. The first step is evaporation and crystalline of sodium tungstate. Firstly evaporate sodium tungstate in the reaction tower, coarse sodium tungstate crystal is produced. Then add water and hydrochloric acid into it and then acid decomposition happens. After acid decomposition, tungstic acid is produced and was mixed up with ammonium. It is then being processed under 80-95 degree Celsius for 4-6 hours, evaporation amount is between 60-70. The final process is crystalline, filtering, washing and dry. Then the finished ammonium paratungstate is made. 




Tungsten Manufacturer & Supplier: Chinatungsten Online -http://www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Non-isothermal kinetic (k, A and ΔE) and thermodynamic (ΔH, C_p and ΔS) parameters of ammonium paratungstate decomposition to the onset of formation of WO₃, were determined by analysing thermogravimetry (TG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) curves recorded at various heating rates (1–30°C min⁻¹). Thermal events encountered throughout the decomposition course were due to three endothermic (at 120 ° C (I), 195 ° C (II) and 359 ° C (IV)) and two exothermic (at 265 ° C (III) and 386 °C (V)) processes. The events I–IV were accompanied by weight losses resulting from the elimination of volatile components [(NH₄)₂O, NH₃ and H₂O] leading to the formation of intermediate solid products (metatungstate and polytungstate), whereas event V was due to the crystallization of WO₃ in the immediate vicinity of its formation (at 370 ° C).


Tungsten Manufacturer & Supplier: Chinatungsten Online -http://www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn