Rebar Upsetting Machine – Cold Forging for Reinforcement Bar
Rebar Upsetting Machine is an advanced piece of equipment developed to prepare rebar ends for mechanical threading and coupling.Using a combination of hydraulic force and precise electronic control, it reshapes the end of each reinforcing bar under cold conditions, creating a denser, stronger joint area. This process is widely used in infrastructure, building construction, bridges, and energy projects where high-performance steel connections are essential.
Innovative Cold Upsetting Technology
Unlike traditional heating or welding methods, this machine applies cold upsetting technology to compress the rebar end, increasing its cross-sectional area by approximately 15–20%. The enlarged end ensures that the thread diameter equals or exceeds the original rebar diameter, allowing full utilization of the steel’s tensile strength—up to 110% of its rated capacity.
This process enhances the structural integrity of the joint while reducing material waste and improving the uniformity of rebar splicing, ensuring long-term stability in critical engineering projects.
Smart Operation System
Rebar Upsetting Machine operates through an integrated hydraulic and electrical control system. Operators can switch between manual and automatic modes depending on the task.
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In automatic mode, the machine performs all steps—clamping, upsetting, and releasing—automatically after the operator activates the foot switch.
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In manual mode, users can independently control hydraulic movement, test parameters, or perform mold replacement.
All operational parameters are displayed on a touch-screen interface, making setup and monitoring simple even for new users.
Flexible Application and High Productivity
Rebar Upsetting Machine accommodates rebar sizes from 16 mm to 32 mm, following GB1499 and GB13014 standards. Each cycle takes only 10–15 seconds, greatly enhancing productivity for mass rebar processing. Thanks to its one-touch automation, even operators with minimal training can achieve consistent, high-quality results.
Simplified Mold Replacement and Maintenance
Changing molds is quick and straightforward. Users can loosen the fixing screws, select the mold removal command on the screen, and the system will automatically lift and release the molds using hydraulic control. When installing new molds, the system clamps and aligns them automatically, ensuring perfect positioning.
High-quality hydraulic seals and precision components reduce wear and extend the machine’s service life. Built-in safety guards and emergency stop systems prevent accidental activation during maintenance or mold changes.
Conclusion
Rebar Upsetting Machine represents a modern approach to rebar preparation—fast, safe, and mechanically precise. Its combination of hydraulic efficiency, digital control, and cold forging technology allows construction teams to achieve superior tensile performance and reliable joints. Whether used in high-rise buildings or heavy civil works, this machine ensures both quality and efficiency in every operation.
