Resistance Welding vs. Stud Welding: Do You Know Which One You Need?
In the world of metal fabrication, choosing the right welding method can make the difference between a durable joint and a structural failure. Two of the most commonly used techniques—resistance welding and stud welding by electric arc—offer very different solutions depending on the application, part design, and technical requirements.
While resistance welding is ideal for joining metal sheets using pressure and heat generated by electrical current, stud welding allows cylindrical or threaded elements to be fixed directly onto metal surfaces without the need for drilling or complex preparation.
And when it comes to efficiency, precision, and reliability, the short arc welding machines from BEARFIX® stand out as industry leaders. Designed for demanding industrial environments, these machines offer superior performance, ease of use, and weld quality that meets the highest standards.
In this article, we explain the key differences between both methods, their advantages, and when it’s best to use each one. Plus, we introduce the BEARFIX® solutions that are revolutionizing stud welding across a wide range of industries.
Resistance Welding vs. Stud Welding: Do You Know Which One You Need?
Resistance Welding
- How does it work? Electrical current is applied between two metal pieces while pressure is exerted. The heat generated by electrical resistance melts the material at the contact point.
- Common types: Spot welding, seam welding, projection welding.
- Typical uses: Automotive bodywork, thin metal structures, electrical components.
- Advantages: Fast, clean, automatable, no filler material required.
Stud Welding
- How does it work? Uses an electric arc welding process, where an arc is generated between the base of the stud and the metal surface. This arc melts both materials, and the stud is then pressed against the surface to form a solid joint.
- Typical uses: Stud fastening in metal structures, shipbuilding, railway industry, appliance manufacturing.
- Advantages: Strong bond, quick installation, ideal for fastenings without surface perforation.
What Is Arc Welding?
Arc welding generates temperatures above 3,000 °C through an arc between the stud and the metal surface. In stud welding, this method enables a fast, precise bond without damaging the base material. It’s especially effective when used with professional units like those from BEARFIX®, which offer:
- ✅ Precise electronic control of welding time
- ✅ Robust and compact metal housing
- ✅ Thermally controlled fan for added safety
- ✅ Compatibility with automatic guns and gas modules
- ✅ Automatic fault diagnostics (damaged cable, overheating, etc.)
Models such as the LBH 410, LBH 710, and LBH 910 allow welding of studs up to 12 mm using short arc or ceramic methods—ideal for demanding industrial applications.
Can Studs Be Welded by Resistance?
Not typically.
Resistance welding requires flat contact between parts and constant pressure, which is not compatible with the geometry of a stud. Studs are usually cylindrical or threaded, making it impossible to distribute current and pressure evenly.
That’s why stud welding with electric arc, especially with equipment like BEARFIX® machines, is the preferred method: fast, safe, and highly professional.
Con más de 40 años de experiencia en el sector de la soldadura y las técnicas de unión Bearcat extiende sus conocimientos a todos los sectores industriales: automoción, ingeniería de ferrocarriles, ingeniería industrial, industria naval, obra civil.
