Wax-Based Lubricants for Copper Processing
Copper processing requires boundary layers capable of withstanding immense shear forces without breaking down. Our engineered synthetic waxes offer superior load-carrying capacity compared to traditional oils, delivering unmatched performance in tube drawing and extrusion.
The Rheological Advantage of Synthetic Waxes
Non-ferrous metals like copper exhibit high ductility and a strong tendency to cold-weld (gall) to tool steel under high pressure. Traditional fluid oils often lack the necessary film strength; their viscosity drops precipitously as temperatures rise during deformation, leading to boundary layer collapse.
When the hydrodynamic film fails, the resulting friction not only damages the tooling but imparts severe surface defects onto the copper workpiece, requiring extensive secondary drawing passes or scrapping the material entirely.
High Molecular Weight Shear Protection
By utilizing high-molecular-weight synthetic waxes, PROMET's copper extrusion lubricants provide a distinct rheological advantage. These waxes remain in a highly viscous, semi-solid state at the critical point of deformation. This ensures a thick, resilient tribological film that physically separates the copper billet from the die bearing.
The wax formulation acts as a phase-change material; it absorbs thermal energy from the deformation zone as it melts, providing localized cooling, while maintaining an extreme pressure (EP) cushion. This results in brilliant surface finishes, lower drawing forces, and the total elimination of galling.
Key Performance Metrics
| Thermal Boundary Limit: | > 950 °C |
| Decomposition Profile: | Clean Phase Transition |
| Kinematic Viscosity (100°C): | Tailored formulations |
| Application Method: | Spraying, Dripping, or Swabbing |
| Graphite Content: | 0% (No solid buildup) |
Related Technical Resources:
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Submit your plant's operational parameters. Our tribology engineers will calculate load-bearing requirements and provide a targeted lubricant formulation to optimize tool life and process stability.