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Control method of hot rolling roughing mill

A control method and rough rolling mill technology, applied in rolling mill control devices, metal rolling, metal rolling, etc., can solve problems such as slabs cannot be bitten normally, slip, and affect production rhythm, so as to ensure production rhythm and increase transmission Speed, the effect of avoiding production accidents

Active Publication Date: 2018-11-20
SHOUGANG JINGTANG IRON & STEEL CO LTD
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Problems solved by technology

[0003] The invention provides a control method of a hot rolling roughing mill, which is used to solve the technical problem in the prior art that the slab slips in the roughing mill, causing the slab to not bite normally, thus affecting the normal production rhythm

Method used

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  • Control method of hot rolling roughing mill

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Embodiment 1

[0019] figure 1 It is a schematic flowchart of a control method for a hot rolling roughing mill in an embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0020] Step 10: The slab enters the rough rolling area, re-optimizes the load distribution of the skid pass, and reduces the slab reduction in the skid pass;

[0021] Further, the slab enters the rough rolling area, re-optimizes the load distribution of the slipping pass, reduces the slab reduction of the slipping pass, and also includes: reducing the slab reduction of the slipping pass to 5- 10%.

[0022] Specifically, the rough rolling mill of the 2250mm hot rolling production line often slips during production, which seriously affects the rolling rhythm and the stability of the rolling mill. The slipping phenomenon in the normal rolling process means that the metal in the entire deformation zone is The roll moves in one direction. Among them, the reduction of the slab is one of the f...

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Abstract

The invention discloses a control method of a hot rolling roughing mill. The method comprises the steps that a board blank enters a rough rolling area, load distribution of a slip pass is optimized again, and the board blank rolling reduction of the slip pass is reduced; the set value of rolling force of a roughing mill vertical roll of the board blank is adjusted, and the holding force is increased; the speed of the roughing mill vertical roll and a roller way when the board blank is gripped is adjusted, and the conveying speed is increased; and descaling water of the current pass of the board blank is eliminated, wherein the steel gripping signal of the roughing mill is judgment of rolling force at the moment of steel gripping. The technical problem that due to the slip phenomenon of a board blank in a roughing mill in the prior art, the board blank cannot be normally gripped, and accordingly normal production rhythm is affected is solved. The technical effect that rapid response isachieved when the board blank slides while being gripped in the roughing mill, the production accidents of board blank abandoning and rollback are avoided, and the production efficiency is improved are achieved.

Description

technical field [0001] The invention relates to the technical field of hot rolling, in particular to a control method of a hot rolling roughing mill. Background technique [0002] In the field of hot rolling, the 2250 production line often has the phenomenon that the slab cannot be bitten normally due to slippage when the slab is rolled in the rough rolling area, especially the tool steel roll, which in turn causes tracking errors and leads to the rejection and return of the slab The phenomenon affects the normal production rhythm, and at the same time affects the yield, cost and other indicators. Contents of the invention [0003] The invention provides a control method of a hot-rolling roughing mill, which is used to solve the technical problem in the prior art that the slab slips in the roughing mill, causing the slab to not bite normally, thus affecting the normal production rhythm. [0004] The invention provides a control method of a hot rolling roughing mill. The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00
CPCB21B37/00
Inventor 张明生彭振伟王健韩宁
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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