Overview
Français
Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.
Read the articleAUTHOR
-
Claude BATAILLE: Former department manager at Ascométal's Fos-sur-Mer plant
INTRODUCTION
Roll surface finish plays an important role in ensuring product quality. In addition, flute rolling, which imposes complex internal transformations on the product, must be properly managed, calling on the skills of both the rolling mill operator and the sizer.
Surface defects observed on rolled products appear during the rolling process, or are caused either by incorrect setting of the train, or by the ingots themselves. To prevent these defects from being passed on to the wire mill, the billets are inspected and, if necessary, repaired during finishing.
This article describes the stresses placed on cylinders and tooling. It goes on to describe the different types of splines and, finally, explains the defects encountered on products and how to remedy them.
The complete study of the subject includes the articles :
— - Rolling of long products. Definitions and parameters ;
— - Rolling of long products. Cages and trains ;
— - Rolling of long products. Semi-finished and finished products;
— M 7 903 - Rolling of long products. Rolls, sizing, defects (this article) ;
- Rolling of long products.
The Ultimate Scientific and Technical Reference
This article is included in
Metal manufacturing processes and recycling
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Rolling of long products
Cylinders and tooling
Bibliography
Standardization
French and European standards. French Standards Association (AFNOR)
NF EN standards
- I- and H-beams in structural steel – Form and dimensional tolerances. Classification index: A45-211. - NF EN 10034 - 12-93
- Hot-rolled sheet piling in non-alloy steels – Part 1: Technical delivery conditions. Classification: A35-520-1....
Manufacturers. Suppliers
(non-exhaustive list)
SMS-Demag AG. http://www.sms-siemag.com/en/index2009.html
Friedrick Kocks GmbH und Co. http://www.kocks.de/Company.30.0.html
Danieli-Morgärdshammar...
Economic data
Tables 1 and 2 give train production capacities and, for information, the amount of investment required for equipment.
The Ultimate Scientific and Technical Reference
