Roughness transfer and wear in last stand of cold rolling millFunded under: FP4-BRITE/EURAM 3
Steel sheeting may require some roughness for a variety of reasons. For example, meeting customer requirements (to make sheet forming easier), preventing strip walking during continuous annealing, preventing sticker marks from batch annealing, improving adhesion coatings. Roughness on the sheets is achieved through two stages. Firstly, in the last stand of the tandem mill and secondly, on a temper mill. The major differences between these two processes is that force control is preferred in the tandem mill whereas elongation control is in use at the temper mill. There are other differences such as the ranges of strip hardness (2-4 times harder at a tandem mill), ranges in tension ratios, lubrication (temper mills are drier than tandem mills), the prescence of sheet coating (absent at tandem mills) and entering roughness. Within this investigation, the partners have considered numerous factors which can be involved in roughness transfer. These parameters include rolling force, strip tension, lubrication, rolls running-in, texturing method and roll steel grade. 110 cases were run at a pilot mill and the partners assessed the main results (rolling force and roll wear) on an industrial tandem mill.
Bibliographic Reference: EUR 18524 EN (1998) 144pp.
Availability: Available from OOPEC Sales agentsAvailable from OOPEC Sales agents
ISBN: ISBN 92-828-4852-3
Record Number: 199910016 / Last updated on: 1999-02-11
Original language: en
Available languages: en