Tungsten Carbide Nozzle Sintering Technology V
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- Category: Tungsten Information
- Published on Monday, 31 August 2015 16:28
- Written by xiaobin
- Hits: 276
Using HIP technology after vacuum sintering, tungsten carbide buttons will be harder, tougher and have good wear resistance and anti-corrosion. However, it costs too much to popularize. With the rapid development of technology, low pressure hot isostatic pressing appeared in the 1980s, which was based on HIP and made some improvements, It has lower pressure than HIP and combines sintering with other processes. It not only reduces the cost, but also remarkably improving the properties of tungsten carbide nozzle. In addition, low pressure hot isostatic pressing is widely used in wolfram (W), molybdenum (Mo), titanium (Ti) and some other refractory metals.
Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Tungsten Carbide Nozzle Sintering Technology IV
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- Category: Tungsten Information
- Published on Monday, 31 August 2015 16:25
- Written by xiaobin
- Hits: 249
However, there are some problems of tungsten carbide nozzle hot pressed sintering still exist, such as the complicated producing equipments, the control is strict, the limit of material, large energy consumption and low efficiency. After vacuum sintering, optimizes tungsten carbide nozzle by hot isostatic pressing (HIP), which can exclude the pores and structural defects inside the cemented carbide and enhance densification of the material. Hot isostatic pressing (HIP) is a process with high temperature and pressure through, the heating temperature is usually 1000°C-2000°C, the working pressure reaches 200MPa, and uses high-pressure inert gas or nitrogen in a sealed container as the pressure transmission medium, which excerts a uniform pressure for the material under the high temperature and high pressure. In the late of 1960s, HIP technology has been widely used in tungsten carbide.
Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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High/Low Tungsten Dart Rule
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- Category: Tungsten Information
- Published on Friday, 28 August 2015 17:44
- Written by yingying
- Hits: 301
High/Low tungsten dart rule are actually two mostly identical games: High and Low. Most people find Low to be the more fun version. These are games that can be played with any number of players, including an odd number. The more people that play, the more fun they are.
The Object: To be the only person in the game with any lives left.
The Scoring: Names are written in any order down the left side of the scoreboard. Usually a throw of one dart each sets the playing order with closet to the bulls-eye throwing first. After the first game, play order is played with whoever lost first plays first on down to the winner playing last. Three tally marks are placed next to each name to indicate the number of lives left and High or Low is written on the top to indicate the version being played.
The Play: First, I'm going to explain High because it is simpler than Low. The first player throws two darts simultaneously to set a starting number. The first player has no chance to lose a life and therefore is handicapped from hitting a really good score to put the next player at a higher risk. The sum of the two darts is written on the board, this is the target number for the next player.
The next player throws three darts in the traditional manner trying to score a higher total than the previous player. Remember that higher means higher, ties to the number don’t count unless the score is over 100 points.
If a player has scored higher than the previous player, no life is lost. If the score was not higher the player erases one life. Either way, that player's score is the new score for the next player to beat. The old score is erased or crossed out and the new score written on the board.
Play continues until only one player has any lives left and he/she wins.
Now let's talk about Low. Low is played exactly like High except that you must score LOWER than the previous player's score to not lose a life. "Easy, I'll just throw all three darts off the board!" wrong. Any darts that miss or fall out of the board count as 25 points!
Another twist to this game is that if you hit a bulls-eye, 25 points are subtracted from your score! So, if you mange to somehow hit three double bulls-eyes, your score would be -150 (negative one-hundred-fifty)!
If you've played x01 before, you'll be absolutely astounded by how many triple-20's you'll hit while aiming for the fat single-1!
Strategy: These games really don't have much strategy. When I play Low, I always like to throw the first dart at bull in hopes of starting my total with -25 or -50.
Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
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Tungsten Carbide Nozzle Sintering Technology III
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- Category: Tungsten Information
- Published on Monday, 31 August 2015 16:23
- Written by xiaobin
- Hits: 280
Hot pressed sintering is a kind of process that pressure excert a pressure to the blank and heat from the axial direction, which put complete sintering and molding together and realize densification. The feature of hot pressed sintering is the heating and pressing process is simultaneous, and the powder is in the thermoplastic state, which is beneficial for helping contact diffusion of particles and flow transfer. Therefore, the pressure of forming is lower, and not only reduces the sintering temperature, but also reduce the sintering time, which contain the growth of the grains.
The product has fine grain, high density, good mechanical properties, physical and chemical properties. Compared to vacuum sintering at sintering process which has larger pores and larger grains, hot pressing sintering enables the stored distortion by vacuum annealing heat treatment method can recrystallize grains and reduce the grain and ultra-fine carbide can be obtained.
Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Futbol Tungsten Dart Rule
- Details
- Category: Tungsten Information
- Published on Friday, 28 August 2015 17:42
- Written by yingying
- Hits: 269
Futbol tungsten dart rule is kind of an odd game that really sharpens your ability to hit bulls-eyes. This game can be played with 2 players or 2 teams.
The Object: To score at least the same number of points faster than your opponent was able to.
The Scoring: Four tallies are marked each side of the board to represent the four "downs" that the offense possesses the ball. The player’s names are written at the top of each column.
The Play: Both players throw one dart at bulls-eye, closest to the bull throws first and has the option of "receiving the ball". If the player "receives" he will play offense first and try to score points. If the player chooses not to receive he will play defense and try to stop the other player from scoring too many points.
The offensive player throws first and tries to score as high a score as possible with three darts. The thin outer ring is the "double" and counts as two time the number scored. The thin inner ring is the "triple" and counts as three times the number scored. Score less than 41 with three darts do not count. Any score 41 or greater is added to the offensive player's score.
Next, the defensive player throws three darts at bulls-eye. Any darts that hit the bulls-eye remove one down each (two if it is a double bulls-eye). Erase one tally from the offensive player's side for each bulls-eye the defense scored.
Play continues alternating players until the defense has removed all four downs from the offensive player. Once all four downs are removed, "possession of the ball" is turned over to the original defensive player. The offensive player now plays defense and the defensive player now plays offense.
The goal of the new offensive player is to score more points than the original offensive player scored.
Strategy: There really is no strategy for this game, it's really just a game of accuracy. The only hint I can offer is that misses around the 19 score more than misses around the 20.
Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
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