Method of manufacturing metal foil
First Claim
1. A process for manufacturing a metal foil by cold rolling a metal sheet through a plurality of passes after selecting a target sheet thickness to be achieved by each pass by repeating the step of calculating a rolling pressure for each pass by varying said target sheet thickness until said calculated pressure reaches a target value, said process comprising making judgment as to the likelihood of any kissing of work rolls after said calculating step, changing the Young'"'"'s modulus of said rolls from the value of soft rolls to that of hard rolls if said judgment has affirmed said likelihood, and repeating said calculating step again until said calculated pressure reaches a new target value, so that a new target sheet thickness may be selected.
1 Assignment
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Accused Products
Abstract
A process for manufacturing a metal foil by effecting rolling with a high efficiency without making any defectively shaped product. A metal foil having a thickness of 0.2 mm or less is manufactured after a plurality of passes of cold rolling by using soft work rolls from the first pass to the pass preceding the kissing pass during which the kissing of rolls is likely to occur, using hard work rolls for carrying out the kissing pass with a reduction in thickness of over 30%, and using soft work rolls for carrying out the last, or the last two passes with a reduction of 20% or less. Judgment is made again as to the likelihood of any roll kissing when hard rolls are used, and the pressure to be applied for the kissing pass is controlled in accordance with the result of such judgment.
9 Citations
13 Claims
- 1. A process for manufacturing a metal foil by cold rolling a metal sheet through a plurality of passes after selecting a target sheet thickness to be achieved by each pass by repeating the step of calculating a rolling pressure for each pass by varying said target sheet thickness until said calculated pressure reaches a target value, said process comprising making judgment as to the likelihood of any kissing of work rolls after said calculating step, changing the Young'"'"'s modulus of said rolls from the value of soft rolls to that of hard rolls if said judgment has affirmed said likelihood, and repeating said calculating step again until said calculated pressure reaches a new target value, so that a new target sheet thickness may be selected.
- 4. A process for manufacturing a metal sheet by a plurality of passes of cold rolling, which comprises using soft work rolls from the first pass of rolling to the pass preceding the kissing pass during which the kissing of the rolls is likely to occur, using hard work rolls for carrying out said kissing pass, and using soft work rolls for carrying out the last, or the last two passes.
Specification