Tungsten Electrode in Resistance Welding
Tungsten electrode in resistance welding refers to the critical conductive electrode material applied in processes such as Resistance Spot Welding (RSW), Seam Welding, Projection Welding, and Resistance Butt Welding. Current passes through the contact surfaces of the workpieces to generate resistance heat during the welding process, melting the material locally to form a weld nugget. Since the welding zone must withstand high current, high temperature, and high pressure, the electrical conductivity, thermal conductivity, wear resistance, and high-temperature strength of the electrode material directly influence welding quality and production efficiency.
1. Working Principle of Tungsten Electrodes in Resistance Welding
During resistance welding, electrodes transfer welding current to the workpieces while applying pressure to the welding area. Heat is rapidly generated at the contact interface through electrical resistance, forming a molten pool. Metallurgical bonding is achieved under applied pressure. Tungsten and tungsten alloy materials have melting points as high as 3410°C, along with high hardness and excellent resistance to softening. Even under high-current and high-pressure conditions, they maintain stable electrode geometry and contact performance, ensuring consistent welding quality.
2. Types of CTIA’s Tungsten Electrodes in Resistance Welding
CTIA offers a variety of tungsten-based electrodes for resistance welding to satisfy diverse welding conditions. The types and characteristics of CTIA’s resistance welding tungsten electrodes are detailed in the picture below:
3. Applications of CTIA’s Tungsten Electrodes
CTIA’s tungsten electrodes are used in: (1) copper and copper alloy welding; (2) electrical contact welding; (3) power battery tab welding; (4) precision welding of electronic components; (5) stainless steel and nickel-based alloy welding; (6) automotive component resistance welding; (7) aerospace structural assembly.
4. Specifications of CTIA’s Tungsten Electrodes in Resistance Welding
(1) Electrode Materials: Pure Tungsten (W), Lanthanated Tungsten (WL10), Tungsten Copper (WCu), and others
(2) Diameter: 1.0–50.0 mm, customizable
(3) Length: 10–300 mm, customizable
(4) Density: 17.0–19.25 g/cm³
(5) Tip Geometry: Flat tip, ball tip, conical tip, customizable
(6) Note: CTIA provides customized resistance welding tungsten electrode solutions according to customer welding equipment and process requirements.
CTIA GROUP (CTIA) has over 30 years of experience in tungsten electrode manufacturing, supported by integrated capabilities in tungsten powder processing, powder metallurgy, high-temperature sintering, and precision machining. CTIA supplies pure tungsten, lanthanated tungsten, tungsten copper, and tungsten alloy resistance welding electrodes with consistent quality and customized dimensions, structures, and tip geometries, delivering reliable solutions for electronics, automotive, new energy, and advanced manufacturing applications.
For any inquiry, please contact tungsten electrode manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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