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

Active Publication Date: 2013-01-23
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology adopts the vertical roll rolling method and the MAS rolling method at the same time, and the process is co

Method used

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Examples

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Example Embodiment

[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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Abstract

The invention relates to a thick plate rolling method which comprises a shaping rolling procedure, a broadening rolling procedure and a fine rolling procedure, wherein shaping MAS (mizushima automatic planview pattern control system) rolling is used for one time during the rolling process of a plate blank through three times of rotation, and the planar shape control to the plate blank is carried out by using broadening MAS rolling for one time, thereby the planar shape of a steel plate is greatly improved, and the rolled steel plate is approximately rectangle shaped, so that the steel plate yield is increased. Compared with the yield of an existing transverse rolled material, the planar shape of the rolled steel plate is improved, thereby the yield of each transverse rolled material using the thick plate rolling method is increased to 93-94%.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a thick plate rolling method, which is realized by controlling a thick plate rolling mill. Background technique [0002] Steel plates with a thickness of more than 4mm are called medium and thick plates, referred to as medium and heavy plates. It is used in shipbuilding, building components, machine manufacturing, transportation, military industry and other departments, as well as in many fields of the national economy such as large-diameter welded pipes, containers, boilers, etc. The level of its technology and equipment directly affects the finished product of the product. Rate. [0003] The thick plate rolling process is a process of rolling a slab of a certain size into a steel plate of a certain size. Since the width of the incoming slab is different from the width of the finished steel plate required by the customer, the rolling method used in the rolling...

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B37/28
Inventor 林剑王全胜孔伟施锦飞
Owner BAOSHAN IRON & STEEL CO LTD
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