There are now two types of electronic dartboard around, the standard board with hundreds of holes in it and the new so called  BristleTech  board, which is similar to the standard bristle boards so you can use both steel tip darts and soft tips, and it still has the electronics to do all the scoring for you as well. This is truly the best of both worlds and is surely the way of the future.

The electronic dartboard have fine workmanship, and design beautiful, good quality and so. If you get to use whatever darts you like and the built in laser shows you where to throw from as well, fantastic! This is surely the ultimate standard board around for both schools of darters at the moment. Who knows, the electronic dart boards may be used in the big tournaments like the Las Vegas Classic before long.

features:

LCD display with cricket display
English speak, 29 games and 90 variations
Adapter and battery operated and both not included
Voice and sound system
bubble bag and Color box package
6soft tip dart and 6 spare tips
PCS per carton; Carton Size: 55 x 16 x 62 cm

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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The TG curve of APT weightessness and the change of temperature and reaction time under the condition of a constant heating rate were obtained by thermo gravmetric analysis .According to the weight loss rate of APT, the DTG curve was drawn based on the TG and curves . A dynamic model of the themal decomposition of APT was practiced by using differential method . A linear regression of the experimental data was performed based on the basic equations of the non isotheraml kinetics. The weightless cures showed that the thermal decomposition of APT consist of four main stages,the first dehydration about 126.2 ℃,the second aaround into

Microwave decomposition of solid crystalline ammonium paratungstate (APT) and ammonium metatungstate (AMT) was investigated. It was observed that APT and AMT interact with 2.45-GHz microwave radiation. Samples of ammonium paratungstate (20-50 g) were successfully converted into WO3-x (0 ≤ x ≤ 0.2). A wide variety of morphological parameters were found. The interaction of AMT with the 2.45-GHz microwave radiation resulted in the partial loss of crystalline water and the partial dissolution of the sample in the released water.

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Ammonium paratungstate was prepared from tungsten alloy swarf employing anodic dissolution in sodium hydroxide using a packed bed configuration followed by chemical conversion into ammonium tungstate through tungstic acid. The alkaline tungstate solution was dialysed to recover sodium hydroxide, which could be recycled to the electrolytic dissolution. The influence of anodic current density and other parameters on dissolution/recovery was studied and discussed. It was observed that a current density of 600 mA/100 g scrap could be applied when the concentration of NaOH was maintained around 2.5 M. The energy consumption for anodic dissolution was 2.14 kWh/kg W with more than 90% recovery achieved. XRD studies indicated that the exhausted scrap contained an alloy of nickel and iron with a very low percentage of tungsten. APT sample prepared through anodic dissolution in NaOH was characterized.

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