| 摘要 |
<p>The invention relates to a method for manufacturing thin metal rings (16) such as for a pushbelt (1) that comprises at least one such ring (16) and a multitude of transverse metal elements (3), which method includes the process steps (III, IV, Vl) of: - separating a plate section (12) from the length (L) of an elongated steel sheet (11), - bending the plate section (12) into a cylindrical shape, - welding adjoining ends (13) of the bend plate section (12) to form a tube (14), wherein in the above process step (III) of bending the plate section (12) into a cylindrical shape the plate section (12) is bend in a direction essentially perpendicular to the said length (L) of the elongated steel sheet (11), i.e. along the width (W) thereof.</p> |
