Cylinders and tools
Rolling of long products - Rolls, sizing, defects

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M7903 V2 Article

Cylinders and tools


Rolling of long products - Rolls, sizing, defects

Author : Claude BATAILLE

Publication date: December 10, 2025 | Lire en français

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1. Cylinders and tools

1.1 Cylinders

The choice of cylinder must meet the following requirements:

  • sufficient tensile strength to withstand rolling forces;

  • sufficient surface finish retention;

  • the greatest possible wear resistance, with the constraint that the cylinder must be able to be re-machined.

In simple terms, steel, which is stronger than cast iron, is used for large trains or high-pressure roughing cages.

The more fragile but wear-resistant cast iron is used for intermediate trains and finishing cages.

Where possible, GS (spheroidal graphite) cast iron is used in roughing machines because it is more...

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