Friction Reduction in Metal Extrusion
Excessive friction is the primary limiting factor in extrusion speed and die longevity. Through precise tribological engineering, we provide lubricants that optimize the coefficient of friction, allowing for increased press speeds and reduced energy consumption.
Controlling the Tribological Interface
In metal extrusion, friction occurs in three distinct zones: between the billet and the container wall, at the die face (dead metal zone formation), and along the die bearing. While some friction is necessary for proper material flow, excessive shear stress dramatically increases the required press tonnage and generates uncontrollable heat.
This excess thermal energy can push the extrudate past its solidus temperature, leading to hot shortness, edge tearing, and degraded metallurgical properties. Furthermore, high friction exponentially accelerates abrasive wear on the die bearings.
Hydrodynamic Film Stabilization
To counter this, our die wear reduction strategies employ advanced lubrication chemistries that establish a stable hydrodynamic regime. By optimizing the fluid's viscosity-pressure coefficient, the lubricant forms an incompressible wedge that sustains separation even under peak forming loads.
This drastic reduction in the coefficient of friction (µ) allows operators to increase ram speeds (enhancing productivity) without crossing the critical temperature threshold of the alloy. The result is a more efficient press cycle, lower energy expenditure per ton of extruded metal, and significantly improved dimensional stability of the profile.
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:
Request Process Analysis
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.