Preparation of High Performance Anti-shock Non-sag Tungsten Wire(1)

With the rapid economic development, national defense, transportation and other industries are gradually increasing their demand for high-performance anti-shock non-sag tungsten wire (not easy to sag and difficult algorithm of fault). How to prepare the production process based on the common non-sag tungsten wire process on high temperature with good non-sag properties and anti-shock performance? Non-sag tungsten powder metallurgy preparation stage has a critical effect on the temperature and anti-shock resistance of tungsten wire:

At a temperature of 260 ~ 460 ℃, and hydrogen flow rate is 0.3 ~ 0.5m3 / h , using ammonium paratungstate(APT) (with good flow properties , impurity content of less than 50ppm, grain morphology of monoclinic hexagonal structure) to obtain a tungsten blue oxide with a particle size of 9.1μm in restore conditions.

At 550 ~ 870 ℃, adding K, Si, Al, Co elements to tungsten blue oxide, through a two-stage reduction, obtained tungsten powders of different particle size, think that B: D powder is 4: 6 ratio of the tungsten powder with a particle size normal distribution, the most beneficial to get a good high temperature non-sag tungsten wire properties and seismic performance.

 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.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

• < Prev
• Next >