Shot peening process is similar to sandblasting processing, the only distinction is grinding compound is different and shot peening needs more air pressure. It is widely used in surface strengthen, polishing and deoxidation to eliminate forging residual stress which requires simple equipment, lower cost and not limited by the shape of material and the space. Shot peening materials contains cast iron balls, steel balls, glass balls and pottery balls, and the glass ball has high requirements, which should be above 6-7 Moh’s hardness. Otherwise, it will be fragile under high-speed impact and increase the cost. After shot peening process, the material will be harder, tougher and has better anti-corrosion and fatigue strength, extends their lifespan.














Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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Looper tungsten dart rule is a very simple yet fun game to play. It is very similar to the basketball game "Horse". It may be played by any number of players and is more fun with a lot of people. This game is actually pretty boring with only two players.

For example, a player has to hit "S5" (the small wedge of the 5). With the first tungsten dart he hits the "S5". He now has two tungsten darts to set a new target. He aims at double bull ("D25") and hits it. He may now choose to sit down and not throw the third tungsten dart and leave the "D25". Let's say that, for some insane reason, he decides to try for a double 18, and misses off the board. He now loses a life and the next player now must hit "S5". The next player now gets up and hits the "S5" on his third tungsten dart. He pulls his darts and throws his first dart and hits "T20" (triple 20). Satisfied, he sits down choosing not to throw the other two darts.

If a player sets a target and all other players fail to match the target, when it's that players turn again, no throw is necessary. The player may choose to stay seated and keep the same target number. If the player chooses to risk trying a turn, the player MUST hit the target same as everyone else. If the player misses a life is lost just as if he did not set the number that stumped everyone else. It is usually wiser to just leave the number and not take the risk.

"So why do they call this 'Looper'?" The reason is that Closed loops of the numbers around the outside of the board count as valid targets! For example the loop that makes up the lower half of the number 6 is a target, however the upper hook of the 6 is not. These are written as "L", for example "L16" would meant the loop of the 16. The 8 and 18 each have two valid loops and which one is hit does matter. They would be notated as "UL8" for upper loop of the 8 or "LL8" for lower loop of the 8. As you can imagine loops are very hard to hit and are also very risky, if you miss slightly, you did not set a target number. However, if you do hit a loop, the other players have the difficulty of matching it.

Strategy: The only real strategy here is one of opportunity. If you hit the target number and have at least two tungsten darts to set a new one, try one dart at a loop. If you hit it sit down. If you don't, make sure you hit a new target even if it's an easy one with your last tungsten dart. Remember, hitting a big fat 16 and giving the next player an easy target is better than losing a life because your threw all your tungsten darts at a loop and missed or having a bounce-out with your last tungsten dart aiming for that double bull.

  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 carbide nozzle is mainly composed of WC hard phase and Co binder phase. It is essential that hard phase ensure the high hardness, toughness and good heat resistance. While the binder phase has a polymorph characteristic, and usually plays a very important role in physical and chemical action in cemented carbide sintering process. X-ray diffraction analysis showed that the grain within tungsten carbide has structural change and increases the number of sub-grain boundaries per unit volume.

The sub-grain boundary structure is unique, which will enhance the shear stress plastic deformation resistance of the alloy so that the plastic deformation of tungsten carbide becomes difficult. Therefore, changes in internal microstructure reflected in the macroscopic properties change is to improve the ability of anti-abrasion synthetic polymers as well as its own resistance to abrasion, erosion resistance and service life have been significantly extended.
















Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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

Looper tungsten dart rule is a very simple yet fun game to play. It is very similar to the basketball game "Horse". It may be played by any number of players and is more fun with a lot of people. This game is actually pretty boring with only two players.

The Object: To win the game you must be the last player to have any lives left.

The Scoring: Players names are written in any order down the left side of the scoreboard. Usually, a throw of one dart each at bulls-eye with the closet player throwing first and the furthest throwing last. After the first game, the first player to get knocked out plays first and so on. Three tallies are marked next to each name to indicate the number of lives left.

The Play: The first player throws one dart left-handed (or right-handed if that player is a lefty) to set a random target. Because the first player has no chance to lose a life, the random throw is used to give the second player a fair chance.

The exact wedge or bulls-eye the tungsten dart landed is marked on the scoreboard. If the dart lands in the 5 between the triple ring and the bulls-eye, you would mark "S5" to indicate the small wedge of the 5. If the dart landed in the triple 5, you would write "T5". If the dart landed in the 5 between the triple and the double rings, you would write "B5" to indicate the big wedge of the 5. If the tungsten dart landed in the double 5, you would write "D5".

The next player now must try to land a tungsten dart in the exact same wedge of the board. If that player is unsuccessful with all three tungsten darts, one life is erased and the next player has a chance.

If the player is successful in matching the wedge any tungsten darts remaining in hand may now be used to score a new target. If the target was hit with the third tungsten dart, the player pulls the tungsten darts and has all three to establish a new target. All three darts need not been thrown in a turn the player may stop at any time after the number was matched and the last dart thrown at the board is the new target. The player may not make a choice of the tungsten darts thrown, only the last dart counts. If the player misses the board with the last dart that can be thrown, a life is lost and the target remains at the previous one set.

  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