Die-casting mold release
Injection-chamber and die release coating
Also known as: Graphite release agent for die casting · Aluminum injection-chamber lubricant · Coating for metal injection molds · Anti-stick paint for non-ferrous alloys
Graphite release coating for metal injection molds and chambers.
[ Technical summary ]
In metal injection, the die and chamber see hot metal, pressure, and short cycles. A graphite coating forms a film that eases release and reduces sticking and wear. This record covers injection and die casting; foundry pouring and extrusion are separate uses. Metal, temperature, and application method are set by the cell.
Each process needs a specific product and application method. ESGRAF selects the solution according to temperature, material, load, cycle, and application method.
[ Problem it solves ]
Ease release in metal injection without metal or slag build-up on die and chamber.
Processes
- Aluminum injection
- Non-ferrous die casting
Operating conditions
- Contact with hot metal under pressure
- Repeated fill and release cycles
When it is suitable
- The part sticks to the die or chamber
- There are marks or slag on the contact surface
- Die wear forces frequent stops
When it may not be suitable
- The part tolerates no carbon pickup from contact
- The process specifies a release agent of another chemistry
- The surface tolerates no black residue and there will be no cleaning stage
Process challenges
- Metal sticking on die and chamber
- Thermal shock of the coating
- Marks on the part
Advantages
- Eases release on short cycles
- Reduces sticking and slag on the surface
- Film that withstands injection heat
Limitations
- Does not replace die design
- The coating wears with the cycle
- May leave black residue if over-applied
[ Critical selection variables ]
These variables define the grade and the geometry. Actual values are confirmed against the grade datasheet.
- Molten metal or alloy in contactDecisive
- Operating temperatureDecisive
- Thermal shock severityDecisive
- Application methodRelevant
- Film thicknessRelevant
- Machine cycle rateRelevant
[ Required material properties ]
Properties that guide selection. Numerical values come from each grade's datasheet.
Critical properties
- Lubricating film formation
- Friction coefficient
- Thermal shock resistance
- Thermal stability
Secondary properties
- Wear resistance
- Non-wetting by molten metal
[ Related ]
[ Frequently asked questions ]
View all FAQsTechnical content reviewed by ESGRAF — Last reviewed: October 28, 2026
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