The Multiple Rare Earth - Tungsten Electrode Materials Industry Key Technology Research

Tungsten inert gas is widely used in welding, plasma welding , cutting and thermal spraying and other areas of the national economy and national defense irreplaceable key functional materials . Currently using more thorium tungsten electrode mainly thorium tungsten electrode containing radioactive thorium , its production and use will cause environmental pollution, hazards to human health , the U.S. , the EU's relevant manufacturers are moving away from thorium tungsten material production or shift production to developing countries , China's long-standing for substitution of tungsten thorium research work , has developed a cerium tungsten, lanthanum tungsten electrodes and other recently developed multi-composite rare earth tungsten electrodes , a small -scale pilot study integrated welding performance meets and exceeds the same specifications of thorium tungsten electrode , to carry out such electrodes industrialization of key technology research is particularly urgent.

The first time in the international multi- composite rare earth tungsten electrodes for industrial production and global markets. Specific innovation :

1 Proprietary component designs.

2 Breakthrough industrial production technical difficulties .

3 Successfully replaced thorium tungsten electrode tungsten electrodes to achieve cleaner production and environmentally friendly.

After several tests topics , breaking multiple composite rare earth tungsten electrodes industrialization of key technologies, integrated yield reached more than 75% , to achieve stable production of the product . Specific technical innovation manifested in :

1 ) Cancel the calcined APT liquid - solid doping . Not only reduces the cost of production and to achieve a uniform doping .

2 ) Large temperature gradient reduction . Regulation of particle size reduction can be achieved .

3 ) Low current vertical melt sintering . That save energy , reduce costs but also reduce the burning .

4 ) Plastic deformation processing of new technologies. Improve the overall product yield.

Currently electrode manufacturing enterprises to use the technology to produce a hundred batches electrodes integrated product yield stable , both in 75% , stable production . The Multiple batch of rare earth tungsten electrodes are already exported to Europe, Japan, Korea and other countries , the domestic market and U.S. , Japan, Korea and other countries, the market is expanding. Through the typical user product performance surveys , users generally reflect multiple composite rare earth tungsten electrodes integrated welding performance is better than thorium tungsten electrode for welding a variety of base materials , good adaptability . Given that the products of excellent welding performance , has been applied to the " Shenzhou" spacecraft welding .


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