This 25mm diameter pneumatic butt welding machine is a specialized device based on resistance welding principles, designed for the efficient, high-quality butt joining of metal bars and wires, such as rebar and steel rods. By applying precise pressure to the two metal joints to be welded and passing a high-density current, the thermal effect of the current melts the metal atoms at the joint. Under pressure, this forms a metallurgical bond, achieving a solid metal connection. The equipment is widely suitable for butt welding between pipes, rods, plates, and profiles made of materials like carbon steel, alloy steel, and non-ferrous metals, and can also join dissimilar metals. It is a key piece of equipment in the construction, manufacturing, and metalworking industries for creating reliable structural connections

• Powerful & Stable Pneumatic Pressure System: Utilizes a high-performance pneumatic (or hydraulic) pressurization system to deliver extremely high clamping force. This guarantees the workpiece remains absolutely free from slippage or misalignment during forging and welding, fundamentally ensuring process stability and consistent performance.

• High-Precision Wear-Resistant Dual-Guide Rails: Features a hardened, precision dual-guide rail system with strong wear resistance, ensuring exceptionally smooth and stable movement of the machine's moving parts. This provides a solid mechanical foundation for achieving ultra-high precision alignment of the workpiece butting faces, a prerequisite for obtaining high-quality weld seams.

• Efficient & Reliable Upset Mechanism: Incorporates an optimally designed upset mechanism that operates smoothly and can deliver massive, yet controllable, upset force. This mechanism completes sufficient extrusion and plastic deformation instantaneously after the metal melts, effectively expelling impurities and refining the grain structure, significantly enhancing joint efficiency and final weld quality.

• High-Temperature Resistant, High-Conductivity Electrode Material: The welding die electrodes are made from premium Chromium Zirconium Copper (CuCrZr). This material offers excellent high-temperature strength, wear resistance, and superior electrical conductivity, ensuring stable current transmission during welding and a long electrode service life. It is a key component in maintaining a stable welding process window

Stable Pressure Application

Easy To Operate

Copper Alloy Electrode