Thick plate rolling method
A technology of forming rolling and rolling process, applied in the direction of metal rolling, contour control, etc., can solve the problems of increased production cost and complicated process, and achieve the effect of increasing the yield and improving the planar shape of the steel plate
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[0051] Example 1
[0052] The initial dimensions of the slab: thickness 297mm, width 1700mm, length 2970mm.
[0053] Target size of rolled steel plate: thickness 20.12mm, width 4307mm, length 17304mm.
[0054] The steel code RS=5, RS=5 is used for rolling, the stretch ratio is 1.45, and the size of the slab during the rolling process is: 1700mm+10mm=1710mm.
[0055] Forming MAS depth: -1.5mm.
[0056] Depth of widening MAS: -4.5mm.
[0057] Before the slab comes to the thick plate rolling mill, it is first rotated by 90°, after the rotation is completed, the forming rolling is performed, and the forming MAS rolling is performed in the last pass of the forming rolling (forming MAS depth-1.5mm); forming MAS After the rolling is completed, the slab is rotated for the second time. After the rotation is completed, the slab is rolled to the width of 4307mm required by the customer. In the last pass of the widening rolling, the slab is rolled by the MAS rolling. Depth -4.5mm); After the widen...
Example Embodiment
[0060] Example 2
[0061] The initial dimensions of the slab: thickness 218mm, width 1300mm, length 2670mm.
[0062] Target size of rolled steel plate: thickness 10.11mm, width 3907mm, length 19156mm.
[0063] The steel code RS=5, RS=5 is used for rolling, the stretch ratio is 1.46, and the size of the slab during the rolling process is: 1300mm+15mm=1315mm.
[0064] Molding MAS depth: -1.6mm.
[0065] Depth of widening MAS: -3.5mm.
[0066] Before the slab comes to the thick plate rolling mill, it is first rotated by 90°, after the rotation is completed, the forming rolling is performed, and the forming MAS rolling is performed in the last pass of the forming rolling (forming MAS depth-1.6mm); forming MAS After the rolling is completed, the slab is rotated for the second time. After the rotation is completed, the slab is rolled to the width of 3907mm as required by the customer. In the last pass of the widening rolling, the slab is rolled by the MAS rolling (widening MAS). Depth -3.5mm...
Example Embodiment
[0069] Example 3
[0070] The initial dimensions of the slab: thickness 297mm, width 1700mm, length 2670mm.
[0071] Target size of rolled steel plate: thickness 18.12mm, width 3217mm, length 23126mm.
[0072] The steel code RS=5, RS=5 is used for rolling, the stretch ratio is 1.20, and the size of the slab during the rolling process is: 1700mm+10mm=1710mm.
[0073] Forming MAS depth: -1.0mm.
[0074] Depth of widening MAS: -6.5mm.
[0075] Before the slab comes to the thick plate rolling mill, it is first rotated by 90°. After the rotation is completed, the forming rolling is performed, and the forming MAS rolling is performed in the last pass of the forming rolling (forming MAS depth -1.0mm); forming MAS After the rolling is completed, the slab is rotated for the second time. After the rotation is completed, the slab is rolled to the width of 3217mm as required by the customer. In the last pass of the widening and rolling, the slab is rolled by a widening MAS. Depth-6.5mm); After the...
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