Typical preheating time: 30–45 minutes
This time range applies to the following conditions:
• Common stainless steel heated roller diameters (200–400 mm)
• Heating temperature 80°C–120°C
• Heat transfer medium is thermal oil or high-temperature hot water
• Appropriately matched heating system power
The core purpose of preheating is to prevent drastic temperature shocks to the overall structure of the heated roller, thus allowing the roller to reach a balanced, stable, and controllable working state in the thermal environment.
