Hot-forming lubrication
Hot bending, cutting, and stamping lubrication
Also known as: Graphite lubricant for hot forming · Hot-stamping release agent · Paint for hot bending · Hot-cutting lubrication
Graphite film for hot bending, cutting, and stamping.
[ Technical summary ]
In hot forming the part and the tool are hot. A liquid lubricant evaporates or bounces; a graphite film stays and reduces friction, marks, and sticking. Closed-die forging and cold stamping are separate records. Tool temperature and application method are set by the press.
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 ]
Lubricate hot bending, cutting, or stamping without the lubricant bouncing or evaporating before contact.
Processes
- Hot stamping
- Hot bending and cutting
Operating conditions
- Hot tool and part
- Repeated thermal cycles
When it is suitable
- The liquid lubricant bounces or evaporates on the hot tool
- There are marks or sticking in hot forming
- The die wears with the thermal cycle
When it may not be suitable
- The process is cold drawing or cold stamping
- The part tolerates no black residue and there will be no wash
- The surface tolerates no black residue and there will be no cleaning stage
Process challenges
- Thermal bounce of the lubricant
- Marks on the hot part
- Die wear from thermal cycling
Advantages
- Film that stays on a hot tool
- Reduces marks and sticking
- Eases hot release
Limitations
- Does not replace closed-die forging as an application
- The coating wears with the cycle
- May generate vapours when applied hot, depending on the product
[ Critical selection variables ]
These variables define the grade and the geometry. Actual values are confirmed against the grade datasheet.
- Operating temperatureDecisive
- Thermal shock severityDecisive
- Application methodDecisive
- Material of the workpieceRelevant
- Pressing pressureRelevant
- Film thicknessRelevant
[ 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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