TIG tungsten needle

TIG tungsten needle professional sales Welding Accessories] tungsten needle (electrode) non-radioactive material. Electron emission capacity than the high thorium tungsten, arc voltage is low, stable arc. Positive polarity, the allowable current density of 5% -8% over the thorium tungsten, exchange high allowable current density, long life, suitable for DC or AC welding and the use of time in the same amount of longer than thorium tungsten. Typically used for welding carbon steel, stainless steel, titanium and other metals. Product Name Specification Unit tungsten needle red head φ 1.5 x 150 支 tungsten needle φ 1.6 x 150 支 tungsten needle φ 2.0 x 150 支 tungsten needle φ 2.4 x 150 支 tungsten needle φ 2.4 x 175 支 tungsten needle φ 3.2 x 150 支 tungsten needle φ 3.2 x 175 支 tungsten needle φ 4.0 x 150 支 tungsten needle φ 5.0 x 150 支 tungsten rod φ 1.6-8.0 Kg supply of various brands of tungsten needle, please consult order! We will provide the best price and service to you. 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Pure tungsten W1 W≥99.92 SiO2≤0.03 Fe2O3Al2≤0.03 Mo≤0.01 CaO thorium tungsten WTH-7 W margin other impurities total mass fraction of not more than 0.15% cerium tungsten WCe-20 W margin CeO1.8- 2.2 SiO2≤0.06 Fe2O3AI2O3≤0.02 Mo≤0.01 CaO≤0.01 cerium tungsten low electron work function, high chemical stability, allowing high current density, non-radioactive, is currently widely used an electrode pure tungsten melting point and boiling point high, not easy to melt volatile, burning, less sophisticated pollution, but electron emission is poor, it is not conducive to the stability of arc burning. Thorium tungsten electron emission capability, allows high current density, more stable arc burning, but with a certain radioactive element thorium, application affected. Zirconium tungsten to special conditions must prevent contamination of the base metal electrode, you can use this Tungsten. This is easy to keep the tip electrode hemispherical, adapted AC welding. 0001 ......................... ....................... 55 916.807 electrode .. Such electrodes are containing tungsten carbide, boron, manganese high abrasive wear of welding electrodes, AC and DC, with good abrasive wear properties of cerium tungsten is extremely ingredients in pure tungsten ------------------------------ mass fraction of 1.8% -2.2% of the cerium oxide electrode and impurities ≤0.1% . The advantage is that X-ray dose cerium tungsten electrode and antioxidant properties have been greatly improved over thorium tungsten; electron work function pole about 10% lower than thorium tungsten arc it easier, better arc stability. Also cerium tungsten chemical stability, cathode spots is small, low pressure drop, less burning, etc., so is currently the most widely used TIG welding a tungsten. The chemical composition of commonly used grades of pure tungsten and tungsten W1 W≥99.92 SiO2≤0.03 Fe2O3Al2≤0.03 Mo≤0.01 CaO thorium tungsten WTH-7 W margin other impurities mass fraction of the total is not more than 0.15% cerium tungsten WCe- 20 W margin CeO1.8-2.2 SiO2≤0.06 Fe2O3AI2O3≤0.02 Mo≤0.01 CaO≤0.01 cerium tungsten low electron work function, high chemical stability, allowing high current density, non-radioactive, is a now widely used electrode pure tungsten high melting and boiling points, not easy to melt volatile, burning, less sophisticated pollution, but electron emission is poor, is not conducive to the stability of arc burning. Thorium tungsten electron emission capability, allows high current density, more stable arc burning, but with a certain radioactive element thorium, application affected. Zirconium tungsten to special conditions must prevent contamination of the base metal electrode, you can use this Tungsten. This is easy to keep the tip electrode hemispherical, adapted AC welding. The chemical composition of commonly used grades of pure tungsten and tungsten W1 W≥99.92 SiO2≤0.03 Fe2O3Al2≤0.03 Mo≤0.01 CaO thorium tungsten WTH-7 W margin other impurities mass fraction of the total is not more than 0.15% cerium tungsten WCe- 20 W margin CeO1.8-2.2 SiO2≤0.06 Fe2O3AI2O3≤0.02 Mo≤0.01 CaO≤0.01 cerium tungsten low electron work function, high chemical stability, allowing high current density, non-radioactive, is a now widely used electrode pure tungsten high melting and boiling points, not easy to melt volatile, burning, less sophisticated pollution, but electron emission is poor, is not conducive to the stability of arc burning. Thorium tungsten electron emission capability, allows high current density, more stable arc burning, but with a certain radioactive element thorium, application affected. Zirconium tungsten to special conditions must prevent contamination of the base metal electrode, you can use this Tungsten. Easy to maintain such an electrode tip hemispherical, adapted AC welding strip, welcomed the consultation