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Method for eliminating finishing liquid splashing

A technology for eliminating light and leveling liquid, applied in the field of eliminating splashing of light leveling liquid, can solve problems such as the inability to truly eliminate leveling liquid residue, achieve the effects of reducing troubleshooting time, improving surface quality, and improving production efficiency

Inactive Publication Date: 2020-12-29
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When producing EDDQ steel, 5-70mm of leveling liquid remains on the upper and lower surfaces of both sides of the whole coil of steel. The position in front of the leveling machine is manually controlled on the DS side, and the defect area on the operating side is kept out of the way. This control method can only temporarily control the residual leveling fluid at the edge, and has certain risks. It cannot really eliminate or control the residual leveling fluid. occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] When producing steel DC06 with a specification of 1.2×1350mm steel, the specific operation includes the following steps:

[0033] 1) Adjust the distance between the second air nozzle on the operating side of the lower surface of the tempering machine frame and the roll surface of the exit anti-wrinkle roller, and the distance is 12mm;

[0034] 2) Control the leveling liquid flow rate to 4L / min;

[0035] 3) Use the constant rolling force to control the skin pass mill mode, the constant rolling force is the skin pass rolling force, the size is 1200KN, and the elongation is 0.5% at this time;

[0036] 4) Control the smooth bending roll force of the tempering machine to -10%;

[0037] 5) Control the pulling sleeve speed of continuous exit to ≤180m / min.

[0038] 6) The diameter of the work roll is 465mm, and the diameter of the intermediate roll is 537mm.

[0039] According to this operation step, the surface of the steel is produced without the residue of the finishing s...

Embodiment 2

[0041] When producing steel DC06 with a specification of 0.8×1500mm steel, the specific operation includes the following steps:

[0042] 1) Adjust the distance between the second air nozzle on the operating side of the lower surface of the tempering machine frame and the roll surface of the exit anti-wrinkle roller, and the distance is 12mm;

[0043] 2) Control the leveling liquid flow rate to 4L / min;

[0044] 3) Use the constant rolling force to control the skin pass mill mode, the constant rolling force is the skin pass rolling force, the size is 1200KN, and the elongation is 0.6% at this time;

[0045] 4) Control the smooth bending roll force of the tempering machine to -10%;

[0046] 5) Control the pulling sleeve speed of continuous exit to ≤230m / min.

[0047] 6) The diameter of the work roll is 463mm, and the diameter of the intermediate roll is 535mm.

[0048] According to this operation step, the surface of the steel is produced without the residue of the finishing s...

Embodiment 3

[0050] When producing steel DC06 with a specification of 0.65*1250mm steel, the specific operation includes the following steps:

[0051] 1) Adjust the distance between the second air nozzle on the operating side of the lower surface of the tempering machine frame and the roll surface of the exit anti-wrinkle roller, and the distance is 12mm;

[0052] 2) Control the leveling liquid flow rate to 4L / min;

[0053] 3) Use the constant rolling force to control the skin pass mill mode, the constant rolling force is the skin pass rolling force, the size is 1200KN, and the elongation is 0.4% at this time;

[0054] 4) Control the smooth bending roll force of the tempering machine to -10%;

[0055] 5) Control the pulling sleeve speed of continuous exit to ≤300m / min.

[0056] 6) The diameter of the work roll is 456mm, and the diameter of the middle roll is 541mm.

[0057] According to this operation step, the surface of the steel is produced without the residue of the finishing soluti...

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PUM

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Abstract

The invention belongs to the technical field of cold rolling continuous annealing, and particularly relates to a method for eliminating finishing liquid splashing. The distance between a second air nozzle on the operation side of the lower surface of a temper mill rack and the roller face of an outlet anti-wrinkling roller is adjusted to be 10-15mm, the flow of finishing liquid is controlled to be2-5L / min, the mode of a temper mill is controlled through constant rolling force, the constant rolling force is finishing rolling force, the magnitude of the constant rolling force is 800-1600KN, thefinishing roller bending force of the temper mill is controlled to be -10% to 5%, and the continuous outlet pull sleeve speed is controlled to be smaller than or equal to 400m / min. When EDDQ and other cold-rolled plates with small rolling force are produced, the residual defect of the finishing liquid is controlled or eliminated, the surface quality of the cold-rolled plates is improved, the useamount of the finishing liquid is reduced, the fault treatment time is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of cold-rolling continuous annealing, and in particular relates to a method for eliminating splashing of skin-passing liquid. Background technique [0002] When producing EDDQ steel, 5-70mm of leveling liquid remains on the upper and lower surfaces of both sides of the whole coil of steel. The position in front of the leveling machine is manually controlled on the DS side, and the defect area on the operating side is kept out of the way. This control method can only temporarily control the residual leveling fluid at the edge, and has certain risks. It cannot really eliminate or control the residual leveling fluid. occur. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a method for eliminating the splashing of the finishing solution. Adopting this method can improve the surface quality of the cold-rolled sheet, reduce the amount of leveling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/02
CPCB21D1/02
Inventor 刘祥龙张建成洪天生解志彪王利国
Owner ANGANG STEEL CO LTD