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A kind of control method of variable gauge strip threading of thin strip in aluminum hot tandem rolling mill

A control method and thin strip technology, applied in the direction of rolling mill control devices, metal rolling, metal rolling, etc., can solve problems such as difficulty in rolling mill bite, failure, etc., and achieve the effects of low cost, simple implementation, and simple control process

Active Publication Date: 2020-09-18
北京科技大学设计研究院有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the thickness of the finished product is 2.5mm or less, when the set value of the roll gap is implemented, the rolls of the last stand will be pressed against each other, that is, the upper and lower work rolls will stick together, which will cause difficulties or failures in the biting of the rolling mill

Method used

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  • A kind of control method of variable gauge strip threading of thin strip in aluminum hot tandem rolling mill
  • A kind of control method of variable gauge strip threading of thin strip in aluminum hot tandem rolling mill
  • A kind of control method of variable gauge strip threading of thin strip in aluminum hot tandem rolling mill

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Embodiment Construction

[0035] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0036] The invention provides a strip threading control method with variable specifications for thin plate strips in an aluminum hot continuous rolling mill.

[0037] Such as image 3 As shown, the method includes the following steps:

[0038] S1: Taking the sum of the finished product thickness H and the additional threading thickness ΔH as the target thickness, the rolling schedule 1 is pre-calculated by the secondary process control system and sent to the primary automation system. The setting data contained in the rolling schedule 1 are as follows :

[0039]

[0040] Among them, F1, F2, F3 and F4 represent 4 finishing mills; the value of the additional thickness ΔH for threading is related to the width and thickness of the rolled aluminum strip,...

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Abstract

The invention provides a varied-specification strip passing control method of aluminum hot-continuous-rolling unit sheet strips and belongs to the technical field of non-ferrous metal machining. According to the method, during production of sheet strip products which are 3.0mm or below in thickness by an aluminum hot-continuous-rolling unit, two rolling schedules are pre-calculated by a secondaryprocess control system according to the different target thicknesses; in the rolling schedule 1, pre-setting calculation is performed in the thickness which is slightly larger than the sheet strip target thickness for head strip-passing; and in the rolling schedule 2, setting pre-calculation is performed in the sheet strip target thickness for normal rolling, and during strip passing, dynamic switching from the rolling schedule 1 to the rolling schedule 2 is finished automatically. By means of the method, the accidents of strip passing failures caused by poor head sheet shape or head deviationduring aluminum sheet strip passing are effectively reduced, and the strip passing success ratio and the production efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal processing, in particular to a strip threading control method with variable specifications for thin plate strips in aluminum hot rolling mills. Background technique [0002] Aluminum Hot Rolling Rolling is a very important process in the processing of aluminum alloy products. Aluminum ingots are rolled by rough rolling mills and finishing hot rolling units to produce hot-rolled products. The types and specifications of hot-rolled products are diversified, including different alloy types, different thicknesses and widths of finished products, and the range of thickness specifications alone is divided into 2.0-18.0mm. The aluminum ingot is reversibly rolled into an intermediate billet with a thickness of 20-30mm through the multi-pass rough rolling mill, and then rolled into a coil by the 1+4 finishing rolling unit. When the hot rolling mill produces products with a thickness of 3.0mm and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/00
CPCB21B37/00
Inventor 任晓怀宗胜悦韩庆张飞凌智
Owner 北京科技大学设计研究院有限公司
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