This paper presents two strategies for the upgrade of set-up generation systems for tandem cold mills. Even though these mills have been modernized mainly due to quality requests, their upgrades may be made intending to replace pre-calculated reference tables. In this case, Bryant and Osborn mill model without adaptive technique is proposed. As a more demanding modernization, Bland and Ford model including adaptation is recommended, although it requires a more complex computational hardware. Advantages and disadvantages of these two systems are compared and discussed and experimental results obtained from an industrial cold mill are shown.

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Resumo Este trabalho apresenta a análise e os resultados de ensaios físico-químicos e metalográfico, na recuperação dimensional, utilizando Procedimento de Soldagem com Arame Tubular (FCAW) em materiais de base em Ferro Fundido Nodular do tipo ASTM A 536 classe 60-40-18, aplicados em Mancais de Encosto de LTQ e LTF Siderúrgico. Para qualificação e aprovação do processo, foram realizados testes em amostras soldadas simulando condições de trabalho os quais são aqui apresentados Através deste trabalho, concluiu-se a recuperação de seis Mancais de Encosto Siderúrgicos com Peso unitário médio de 8 Ton. Palavras-chave: Mancal; Ferro fundido; Soldagem; Laminação. Abstract This paper presents the analysis of the results of physic-chemical tests and metallographic analyses, for application to dimensional repair overlay weld using welding procedure with Flux-cored gas Shielded-FCAW process, Backup Chocks for LTQ backboard and LTF Steel. The definition, qualification and approval of the welding process to be used, preliminarily been performed chemical tests and metallographic in samples welded with the base material in Cast Iron. The results presented in this paper were used to rebuild to the dimensional repair of the six chocks with average unit weight of 8 Ton.

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