Tungsten Alloy Electrode
Tungsten alloy electrode is made of tungsten to tungsten electrode with another element. In the metal of tungsten, the highest melting point, high temperature strength and creep resistance and thermal conductivity, electrical conductivity and electron emission performance are good, than the major, except for the manufacturing of hard alloy and additive in alloy, tungsten and its alloys are widely used in electronics, electric light source industry, also in the aerospace, weapons and other departments for casting, make a rocket nozzle, die-casting mold, penetrators, contact, body heat and the heat shield.
In refractory metals, tungsten and tungsten alloys plastic - brittle transition temperature maximum. Sintering and melting polycrystalline tungsten material plasticity - brittle transition temperature between about 150 ~ 450 ℃, resulting in difficulties in processing and use, and the single crystal tungsten is below room temperature. Tungsten materials in the interstitial impurities, microstructure and the alloying elements, as well as plastic processing and surface state of the tungsten material plastic - brittle transition temperature has a significant impact. In addition rhenium tungsten material can significantly reduce plastic - brittle transition temperature, the other alloying elements to reduce plastic - brittle transition temperature have little effect (see the metal reinforcement).
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Specification for Tungsten and Oxide Dispersed Tungsten electrode for Arc Welding and Cutting