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What are the features of CMT cold metal transfer welding technology?
By rapidly controlling the wire feed retraction, the molten droplet is separated just before it reaches the workpiece, significantly reducing heat input—by as much as 33% compared to conventional welding. This alternating hot-and-cold process makes the welding procedure gentler, preventing thin plates from burning through or warping, and is particularly well-suited for welding ultra-thin sheets as thin as 0.3 mm.
Release date:
2025-01-01 15:49
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CMT cold metal transfer welding technology is an advanced welding process whose key features include:
Low Heat Input and Precise Control
By rapidly controlling the wire feed retraction, the molten droplet is separated just before it reaches the workpiece, significantly reducing heat input—by as much as 33% compared to conventional welding. This alternating hot-and-cold process makes the welding procedure gentler, preventing burn-through or deformation in thin plates, and is particularly well-suited for welding ultra-thin sheets as thin as 0.3 mm.
High-quality welds and stability
CMT technology ensures uniform weld formation with minimal spatter by precisely controlling short-circuit transfer. The resulting welds exhibit high strength and excellent sealing performance, achieving a 99% pass rate for air tightness, while the surface finish is nearly flawless—almost entirely free of visible marks.
Environmental Protection and Productivity
This technology boasts high production efficiency and virtually eliminates smoke and dust emissions during the process, aligning perfectly with modern industry standards for environmental sustainability. It can achieve more than 70 molten droplet transitions per second, making it ideal for large-scale, automated manufacturing operations.
Compatibility of Dissimilar Materials
In steel-aluminum hybrid body manufacturing, CMT achieves a strong bond between aluminum and steel by optimizing welding parameters—such as the mixed gas shielding—and thereby resolves the material compatibility issues inherent in conventional processes.
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