The need for a more energy-conscious society in relation to the efficient production and consumption of energy has intensified in past years and will become increasingly important for that society in the future. Currently, worldwide energy use is growing much faster than supply can match. The efficiency of conventional technologies must be improved in order to reduce losses in transmission and distribution of energy, and new strategies and technologies must be developed for “doing more, using less”.

Whatever form such solutions may take in the future, it may be expected that tungsten-based materials and components will play their positive part in meeting these challenges. Tungsten products have contributed in the past in this way, both as functional materials and advanced tools with outstanding properties, and this contribution will not diminish in the near future.

Current discussions on global warming, and the conclusion that anthropogenic greenhouse gases are responsible for most of the observed temperature increase since the middle of the twentieth century, have brought calls for reductions in emissions which will demand a more conscientious handling of fossil energy worldwide. The search for alternatives will be intensified, as coal, oil and natural gas reserves become depleted and the need to use existing natural and renewable resources steadily increases.

There is a great opportunity for tungsten-containing products which have strategic importance in the field of fossil energy production, fossil energy or renewable power generation, power transmission and power distribution, because of their outstanding properties.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Email: sales@chinatungsten.com
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Introduction
The production of the tungsten(VI) oxide from the ores is complicated, and not needed for any UK A level (or equivalent) syllabus. All we are interested in is the final reduction of the oxide to the metal.

Pure tungsten can't be obtained by reducing tungsten(VI) oxide using carbon, because it reacts with carbon to make tungsten carbide. Instead, the reducing agent is hydrogen.
The extraction process

Powdered tungsten(VI) oxide is heated to temperatures in the range 550 - 850°C in a stream of hydrogen.

An excess of hydrogen is used, and this carries away the steam produced during the reaction. The hydrogen is dried and recycled.
Great care obviously has to be taken to keep the whole system free of air to avoid explosion risks with the hydrogen at these high temperatures.
 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
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Although classified as a rare metal, tungsten is found in most countries and the International Tungsten Industry Association (ITIA), a not-for-profit trade association, represents the industry worldwide, with a membership ranging from miners to converters to consumers to traders.

Why tungsten is indispensable to our lives will become apparent from the survey on this website of tungsten’s applications, from mobile phones, circuit boards, dentist drills and light sources, to darts and golf clubs, to huge mining drills, power plants and nuclear reactors, to cars, planes and trains – and to LIFE itself.

The ITIA's website explores a fascinating metal of many superlatives, providing a work of reference to the expert, a comprehensive guide to the student, and an introduction to tungsten to the general public.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
Tungsten Video Center: http://v.chinatungsten.com
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Weldcraft has expanded its premium tungsten electrode offering to include 2 percent lanthanated and zirconiated tungsten electrodes. Like its existing tungsten electrode offering – pure, 2 percent ceriated, 1.5 percent lanthanated, rare earth and 2 percent thoriated – the new additions have undergone rigorous testing to ensure the highest quality and performance.

The 2 percent lanthanated tungsten electrodes provide similar characteristics as the 1.5 percent lanthanated tungsten electrode, but with improved arc starting and stability, and less tip erosion. They are also a good substitute for 2 percent thoriated tungsten electrodes. The new zirconiated tungsten electrodes resist spitting in higher current applications, minimizing the opportunity for tungsten contamination. These electrodes also provide excellent arc starts and stability, and ball up easily in AC applications, ensuring a smooth arc.

Weldcraft offers all of its tungsten electrodes in seven-inch lengths and in five industry-standard diameters (0.040-, 1/16-, 3/32-, 1/8- and 5/32-inch). Each package of ten tungsten electrodes features three languages – English, Spanish and French – and is color-coded according to American Welding Society (AWS) A5.12 and ISO 6848 standards: pure – green; 2 percent ceriated – grey; 1.5 percent lanthanated – gold; 2 percent lanthanated – blue; rare earth – aqua; 2 percent thoriated – red; and zirconiated – brown.
 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
Tungsten Video Center: http://v.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com