| 摘要 |
PURPOSE:To prevent a junction line from being rolled simultaneously over plate width and thus prevent a plate break, and to improve yield by slanting the junction line between steel plates to the contact line between a cold rolling roll and the steel plates. CONSTITUTION:The junction lines between steel plates is slanted at a fixed angle theta to the junction line between a roll and the steel plates and successive continuous rolling is performed from one end to the other end in the width direction of the steel plates. The junction line of the steel plates is slanted at a specified angle theta and also slanted at a specified angle theta to the end part in the opposite direction at the center part of the plate width to perform successive continuous rolling from both end parts to the center part in the width direction of the plates. At this time, the expressionIholds for the angle theta, where DELTAl is the width of the junction line including a change in material quality, DELTAR is the contact width between the roll and steel plates during rolling, and W is the width of the steel plate. |
