Method for rolling metal plate

A method for rolling metal plate comprising the steps of:

• rolling the metal in a longitudinal direction at a predetermined broadside rolling ratio, said ratio being the final plate width, to form a first metal plate having edge and crop portions;
• sizing the first metal plate such that a central portion of said first metal plate in a section parallel to said longitudinal direction thereof is greater in thickness than that of the end portions thereof if the edges of the first metal plate are spool shaped;
• rotating the sized first metal plate 90.degree. in a horizontal plane;
• rolling the first metal plate to form a second plate;
• sizing the second plate such that the central portion of the second plate in a section normal to said longitudinal direction thereof is thinner than the end portions thereof if the crop portions of the second plate bulge outwardly;
• rotating the second metal plate 90.degree. in a horizontal plane;
• and
• rolling the second plate.

A method for rolling metal plate comprising the steps of:

• rolling the metal plate in a longitudinal direction at a predetermined broadside rolling ratio, said ratio being the final plate width, to form a first metal plate having edge and crop portions;
• sizing the first metal plate such that a central portion of said first plate in a section parallel to said longitudinal direction thereof is less in thickness than that of the ends thereof if the edges are barrel shaped;
• rotating the sized first metal plate 90.degree. in a horizontal plane;
• rolling the first metal plate to form a second plate;
• sizing the second plate such that the central portion of the second plate in a section normal to said longitudinal direction is thinner than the end portions thereof if the crop portions of the second plate bulge outwardly;
• rotating the second metal plate 90.degree. in a horizontal plane;
• and
• rolling the second plate.

A method for rolling metal plate comprising the steps of:

• rolling the metal plate in a longitudinal direction at a predetermined broadside rolling ratio, said ratio being the final plate width, to form a first metal plate having edge and crop portions;
• sizing the first metal plate such that a central portion of said first metal plate in a section parallel to said longitudinal direction is less in thickness than that of the end portions thereof if the edges are barrel shaped;
• rotating the sized first metal plate 90.degree. in a horizontal plane;
• rolling the first metal plate to form a second plate;
• sizing the second plate such that the central portion thereof in a section normal to said longitudinal thereof is thicker than the end portions thereof if the crop portions are sunken;
• rotating the second metal plate 90.degree. from the longitudinal direction in a horizontal plane;
• and
• rolling the second plate.

A method for rolling metal plate comprising the steps of:

• rolling the metal plate in a longitudinal direction at a predetermined broadside rolling ratio, said ratio being the final plate width, to form a first metal plate having edge and crop portions;
• sizing the first metal plate such that a central portion of said first plate in a section parallel to said longitudinal direction is greater in thickness than that of the end portions thereof if the edges of the first plate are spool shaped;
• rotating the sized first metal plate 90.degree. in a horizontal plane;
• and
• rolling the first metal plate.

A method for rolling metal plate comprising the steps of:

• rolling the metal plate in a longitudinal direction at a predetermined broadside rolling ratio, said ratio being the final plate width, to form a first metal plate having edge and crop portions;
• sizing the first metal plate such that a central portion of said first plate in a section parallel to said longitudinal direction is less in thickness than that of the end portions thereof if the edges of the first metal plate are barrel shaped;
• rotating the sized first metal plate 90.degree. in a horizontal plane;
• and
• rolling the first metal plate.