TECHNOLOGY #04
Graphite Suspensions
Graphite and Boron sticks are used as release agents in aluminum extrusion. These materials are known for their high-temperature stability and excellent lubricating properties.
Their effectiveness in aluminum extrusion is, however, heavily dependent on the application method and consistency.
Also, Worker health considerations due to particle exposure are a critical concern and require appropriate safety measures.
How it works
Graphite suspensions are liquid lubricants that contain fine graphite particles suspended in a carrier fluid.
When applied to the die surface, the fluid evaporates or burns off, leaving a thin, uniform layer of graphite. This layer reduces friction and prevents sticking or galling of the aluminum during extrusion.
Graphite maintains its lubricating properties at the high temperatures typical in the extrusion process, ensuring consistent performance.
Product application:
Graphite suspensions can be applied to the die surface through spraying, brushing, or dipping methods.
This liquid form allows for easy and uniform application, ensuring consistent coverage across complex die geometries.
The suspension dries quickly, forming a stable, adherent layer of graphite that enhances die performance.
Automated application systems can further improve consistency and efficiency, reducing manual labor and ensuring a uniform layer every time.

Strengths & Weaknesses
Let´s explore the strengths and weaknesses of using Graphite Suspension lubricants in a common aluminum extrusion process.
Strengths & Weaknesses
Let´s explore the strengths and weaknesses of using Graphite Suspension lubricants in a common aluminum extrusion process.
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