Rod Butt Welder: How Resistance Butt Welding Joins Wire and Rod
A rod butt welder joins two wire or rod ends face to face with resistance heat and pressure, so the joint carries the same tensile strength as the parent wire. There is no filler, flux or gas: the two ends are clamped, current flows across the contact faces, and the upset pressure forges them into one piece.
How the rod butt welding process works
- Prepare the ends. The wire ends are cut square by a shearing process so the faces meet cleanly.
- Preset current and pressure. Welding current and clamping pressure are set for the wire size with a rotary switch; the settings repeat for every weld of that size.
- Clamp and align. Quick-acting clamps hold the ends rigidly in grooved electrodes that align the wire quickly and accurately. An illuminated magnifier lets the operator check the ends before welding.
- Weld. A push of the button starts the cycle; the built-in control completes heating and upset automatically.
- Declamp. Once the weld is complete the job is released. The automatic cycle gives a uniform joint with high tensile strength.
Where rod butt welders are used
Wire drawing plants join coil ends to keep the drawing line running; wire-product and mesh makers join rod before forming; fabricators butt-weld round bar, chain links and ring blanks. Because the joint is forged rather than cast, it can be drawn, bent and formed after welding.
Choosing a machine
Choose by the wire or rod diameter you join most and by how the clamps are operated. The rod butt welding machine uses manual clamping for workshop and wire-drawing use; the pneumatic rod butt welder clamps and upsets with air pressure for repeatable production joints. Thin wire and bandsaw blades use their own machine class — see the butt welding machines range.
Need help choosing? WhatsApp our technical team on +91 88008 82983 with the wire diameter and material. GeM Registered OEM Manufacturer. Supported Worldwide.
Looking at equipment for this? These Cruxweld machines are the usual starting point — or send us your job and we suggest one.
Need a machine for this job? Use the machine finder or WhatsApp +91 88008 82983.
CRAZY IN LOVE WITH WELDING. Ramakant has a diversified background with industrial experience in welding and production management. He holds a master's degree (M.Tech.) in metallurgy and welding technology from SLIET University. He has experience in a number of industries, including power generation, defense, construction, mining equipment, and heavy engineering fabrication. He holds the positions of welding engineer, quality and inspection officer as well as general management. He has written technical welding articles, contributed to the various welding committees. For the past eight years, Ramakant has been a technical consultant, trainer, and spokesperson for Cruxweld.
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