In a manufacturing method for fuel cell separators having a seal part of convex shape that is pushed when superimposed with another separator, the method includes: a first pressing step of imparting work hardening to an entire region to become a convex shape configuring the seal part; and a second pressing step of press molding the region work hardened in the first pressing step so as to become a convex shape.

In a manufacturing method for fuel cell separators having a seal part of convex shape that is pushed when superimposed with another separator, the method includes: a first pressing step of imparting work hardening to an entire region to become a convex shape configuring the seal part; and a second pressing step of press molding the region work hardened in the first pressing step so as to become a convex shape.

A device for laterally guiding a metal strip (1, 13) running over a loop lifter (4, 12) between two roll stands (2, 3, 8, 9) of a finishing train. The device includes at least one main member module (14) extending in a direction between the roll stands. The module has a guiding plane (15), and also supports a number of wear members (18, 19, 20), each with a wear surface (21, 22, 23). Those wear members can be turned to a number of rotational positions. At least two wear members (18, 19, 20) are respectively arranged between one of the roll stands (2, 3, 8, 9) and the loop lifter, wherein, seen in the direction of the loop lifter (4, 12), the surface area of the wear surface (21, 22, 23) of adjacent wear member bodies (18, 19, 20) increases. During the operation of the device, at least one of the wear members is rotated while the metal strip (1, 13) is running to expose another area of the wear surface to the side of the strip.

A device for laterally guiding a metal strip (1, 13) running over a loop lifter (4, 12) between two roll stands (2, 3, 8, 9) of a finishing train. The device includes at least one main member module (14) extending in a direction between the roll stands. The module has a guiding plane (15), and also supports a number of wear members (18, 19, 20), each with a wear surface (21, 22, 23). Those wear members can be turned to a number of rotational positions. At least two wear members (18, 19, 20) are respectively arranged between one of the roll stands (2, 3, 8, 9) and the loop lifter, wherein, seen in the direction of the loop lifter (4, 12), the surface area of the wear surface (21, 22, 23) of adjacent wear member bodies (18, 19, 20) increases. During the operation of the device, at least one of the wear members is rotated while the metal strip (1, 13) is running to expose another area of the wear surface to the side of the strip.

Apparatus for rolling a metal product comprising a plurality of rolling units (11), each provided with a respective rolling roll (12). Each rolling unit (11) comprises a support assembly (17) selectively rotatable around an axis of rotation (Z), and comprising a support rod (20) provided with an attachment portion (23) of a roll (12), and an actuation assembly (35) configured to selectively move the support rod (20) along the axis of rotation (Z) to allow the removal of the roll (12).

Apparatus for rolling a metal product comprising a plurality of rolling units (11), each provided with a respective rolling roll (12). Each rolling unit (11) comprises a support assembly (17) selectively rotatable around an axis of rotation (Z), and comprising a support rod (20) provided with an attachment portion (23) of a roll (12), and an actuation assembly (35) configured to selectively move the support rod (20) along the axis of rotation (Z) to allow the removal of the roll (12).

An asynchronous rolling mill with a super large diameter ratio comprises a rolling mill stand, a press-down device, a balancing device, an upper roll system, and an arc-shaped plate device. The arc-shaped plate device comprises an arc-shaped plate, the arc-shaped plate is arranged opposite to the upper roll, and the arc-shaped plate and the upper roll are cooperated to roll strips. The present disclosure also provides a method for rolling a strip using an asynchronous rolling mill with a super large diameter ratio. The asynchronous rolling mill can roll with super large diameter ratio and different speeds, and has a large angle to engage, thereby reducing the external friction force of a workpiece and improving strip forming quality.

An asynchronous rolling mill with a super large diameter ratio comprises a rolling mill stand, a press-down device, a balancing device, an upper roll system, and an arc-shaped plate device. The arc-shaped plate device comprises an arc-shaped plate, the arc-shaped plate is arranged opposite to the upper roll, and the arc-shaped plate and the upper roll are cooperated to roll strips. The present disclosure also provides a method for rolling a strip using an asynchronous rolling mill with a super large diameter ratio. The asynchronous rolling mill can roll with super large diameter ratio and different speeds, and has a large angle to engage, thereby reducing the external friction force of a workpiece and improving strip forming quality.

A rolling mill stand has two working rolls forming a roll gap in which a rolled product transported in a conveying direction can be formed. The positioning of at least one working roll is variable in a plane perpendicular to the conveying direction. The rolling mill is used in a method which comprises: conveying the rolled product through the roll gap in the conveying direction and at the same time opening or closing the rolling mill stand by correspondingly increasing or decreasing the roll gap; during opening or closing of the roll stand, detecting a position of the rolled product in front of and/or behind the roll gap in the direction transverse to the conveying direction; and changing the positioning of the corresponding working roll depending on the detected position, so that the rolled product is stabilized at a target position during opening or closing of the roll stand.

A rolling mill stand has two working rolls forming a roll gap in which a rolled product transported in a conveying direction can be formed. The positioning of at least one working roll is variable in a plane perpendicular to the conveying direction. The rolling mill is used in a method which comprises: conveying the rolled product through the roll gap in the conveying direction and at the same time opening or closing the rolling mill stand by correspondingly increasing or decreasing the roll gap; during opening or closing of the roll stand, detecting a position of the rolled product in front of and/or behind the roll gap in the direction transverse to the conveying direction; and changing the positioning of the corresponding working roll depending on the detected position, so that the rolled product is stabilized at a target position during opening or closing of the roll stand.