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Hard Calender with Controlled Crown
The hard calender adopts rigid roller surfaces such as steel or chilled cast iron rollers, with high hardness and low elastic deformation of the roller body.
The contact area of the hard calender is small, the pressure is concentrated, and the peak pressure is high, which can easily lead to uneven local stress on the paper.
Why Calender Need Crown
After being subjected to pressure, it will deform, which is mechanically called deflection.
If no measures are taken, the resulting deflection will make the paper thinner on both sides and thicker in the middle.
Making two pressure rollers into an olive shape or making one of them into an olive shape is called fixed medium height.
Technical Sheet
| Paper width | 1092~10000mm |
| Maximum line pressure | 450KNm |
| Working speed | 200-12000min |
| Maximum temperature | 350 ℃ |
| Roller material | Cold hard cast iron or forged roller |
Hard Calender with Controlled Crown
The hard calender adopts rigid roller surfaces such as steel or chilled cast iron rollers, with high hardness and low elastic deformation of the roller body.
The contact area of the hard calender is small, the pressure is concentrated, and the peak pressure is high, which can easily lead to uneven local stress on the paper.
Why Calender Need Crown
After being subjected to pressure, it will deform, which is mechanically called deflection.
If no measures are taken, the resulting deflection will make the paper thinner on both sides and thicker in the middle.
Making two pressure rollers into an olive shape or making one of them into an olive shape is called fixed medium height.
Technical Sheet
| Paper width | 1092~10000mm |
| Maximum line pressure | 450KNm |
| Working speed | 200-12000min |
| Maximum temperature | 350 ℃ |
| Roller material | Cold hard cast iron or forged roller |
