ALUMINUM BAR AND PRODUCTION METHOD THEREOF

摘要

A production method of an aluminum bar includes a surface pressing step of pressing a surface of an aluminum bar with pressure rollers. A pressing force of the pressure rollers in the surface processing step is set within a range of 1.5 Fc to 4.0 Fc, where, in a relationship between a pressing force of the pressure rollers to the aluminum bar and a straightness of the aluminum bar, when a boundary point at which a section where the straightness of the aluminum bar improves as the pressing force of the pressure rollers increases shifts to a section where the straightness does not change as the pressing force of the pressure rollers increases is a straightness saturation point, and the pressing force of the pressure rollers at the straightness saturation point is “Fc”.

主权项

1. A production method of an aluminum bar, comprising:
a surface pressing step of pressing a surface of an aluminum bar with pressure rollers, wherein a pressing force of the pressure rollers in the surface processing step is set within a range of 1.5 Fc to 4.0 Fc, where, in a relationship between a pressing force of the pressure rollers to the aluminum bar and a straightness of the aluminum bar, when a boundary point at which a section where the straightness of the aluminum bar improves as the pressing force of the pressure rollers increases shifts to a section where the straightness does not change as the pressing force of the pressure rollers increases is a straightness saturation point, and the pressing force of the pressure rollers at the straightness saturation point is “Fc”.