阅读说明：本技术 一种薄规格带钢或者硅钢尾部卷取控制工艺 (Thin-specification strip steel or silicon steel tail coiling control process ) 是由 闫峥嵘 张世厚 康炜 于 2021-09-15 设计创作，主要内容包括：一种薄规格带钢或者硅钢尾部卷取控制工艺,属于热连轧带钢卷取设备技术领域,解决薄规格带钢和硅钢尾部起套导致卸卷异常、卷形合格率下降的技术问题。解决方案为：在卷取厚度小于等于2.3mm的带钢或所卷取带钢的材质代码等于硅钢的材质代码的情况下,带钢尾部到达精轧F2机架时,G辊道速度V-(1)=K-(1)×D×ω×π/60；带钢尾部继续前行并到达精轧F6机架时,G辊道速度V-(2)=K-(2)×D×ω×π/60；在卷取厚度大于2.3mm的带钢且所卷取带钢的材质代码不等于硅钢的材质代码的情况下,G辊道投滞后速度的滞后率取值范围为90%～70%。本发明具有设计合理、工作效率高、产品质量好、可有效避免产品缺陷等优点。(A coiling control process for a thin-specification strip steel or silicon steel tail belongs to the technical field of hot continuous rolling strip steel coiling equipment and solves the technical problems of coil stripping abnormity and coil shape qualification rate reduction caused by the sleeve lifting of the thin-specification strip steel and silicon steel tail. The solution is as follows: when the strip steel with the thickness less than or equal to 2.3mm is coiled or the material code of the coiled strip steel is equal to that of silicon steel and the tail of the strip steel reaches a finish rolling F2 rack, the G roller speed V is 1 =K 1 XDxω xπ/60; the G roller table speed V is achieved when the tail part of the strip steel continues to move forwards and reaches a finish rolling F6 machine frame 2 =K 2 XDxω xπ/60; and under the condition that the strip steel with the thickness of more than 2.3mm is coiled and the material code of the coiled strip steel is not equal to that of the silicon steel, the hysteresis rate of the G roller bed feeding hysteresis speed ranges from 90% to 70%. The invention has the advantages of reasonable design, high working efficiency, good product quality, capability of effectively avoiding product defects and the like.)

1. A thin gauge strip steel or silicon steel tail coiling control process is characterized in that:

when the strip steel with the thickness less than or equal to 2.3mm is coiled or the material code of the coiled strip steel is equal to that of silicon steel and the tail of the strip steel reaches a finish rolling F2 rack, the G roller speed V is₁=K₁XDxω xπ/60; the G roller table speed V is achieved when the tail part of the strip steel continues to move forwards and reaches a finish rolling F6 machine frame₂=K₂×D×ω×π/60；

Wherein: k₁Is the first stage hysteresis rate; k₂Is the second stage hysteresis rate; d is the roll diameter of the lower pinch roll; omega is the actual angular velocity of the lower pinch roll;

and under the condition that the coiled strip steel with the thickness of more than 2.3mm or the material code of the coiled strip steel is not equal to that of the silicon steel, the hysteresis rate of the G roller bed feeding hysteresis speed ranges from 90% to 70%.

2. The thin gauge strip steel or silicon steel tail coiling control process of claim 1, wherein: the first sectionHysteresis ratio K₁The value range of (A) is 70% -60%; the second-stage hysteresis rate K₂The value range of (A) is 50% -40%.

Technical Field

The invention belongs to the technical field of hot continuous rolling strip steel coiling equipment, and particularly relates to a thin-specification strip steel or silicon steel tail coiling control process.

Background

With the continuous thinning development of hot continuous rolling products, thin strip steel with the thickness less than or equal to 2.3mm and the tail part of silicon steel are frequently sleeved during coiling, the quality of steel coils is seriously influenced, the coil shape qualification rate is reduced, and the production quality of the next process is influenced. The abnormal coil at the tail part is coiled by the coiling block, so that the coil can not be normally unloaded, and the single machine production is forced, thereby reducing the production efficiency.

Disclosure of Invention

The invention provides a coiling control process for the tail part of thin-specification strip steel or silicon steel, aiming at overcoming the defects of the prior art and solving the technical problems of abnormal coil stripping, reduced coil-shaped qualified rate and the like caused by the existing sleeve lifting of the tail part of the thin-specification strip steel or silicon steel.

The invention is realized by the following technical scheme.

A coiling control process for the tail of thin-gauge strip steel or silicon steel comprises the following steps:

when the strip steel with the thickness less than or equal to 2.3mm is coiled or the material code of the coiled strip steel is equal to that of silicon steel and the tail of the strip steel reaches a finish rolling F2 rack, the G roller speed V is₁=K₁XDxω xπ/60; the G roller table speed V is achieved when the tail part of the strip steel continues to move forwards and reaches a finish rolling F6 machine frame₂=K₂×D×ω×π/60；

Wherein: k₁Is the first stage hysteresis rate; k₂Is the second stage hysteresis rate; d is the roll diameter of the lower pinch roll; omega is the actual angular velocity of the lower pinch roll;

and under the condition that the strip steel with the thickness of more than 2.3mm is coiled and the material code of the coiled strip steel is not equal to that of the silicon steel, the hysteresis rate of the G roller bed feeding hysteresis speed ranges from 90% to 70%.

Further, the first stage hysteresis rate K₁The value range of (A) is 70% -60%; the second-stage hysteresis rate K₂The value range of (A) is 50% -40%.

The invention adopts a method of feeding the hysteresis rate of a G roller way in sections to coil aiming at different steel thicknesses, solves the problem of sleeve lifting of the tail parts of the hot continuous rolling coiled thin-specification strip steel and silicon steel, coordinates the tension of the coiled tail parts, enables the tail parts of the strip steel to enter a winding drum in a flat manner, smoothly finishes the steel coiling process, and avoids the problems of abnormal coil unloading, unqualified coil shape quality and the like caused by the sleeve lifting of the tail parts.

Compared with the prior art, the invention has the advantages of reasonable design, high working efficiency, good product quality, capability of effectively avoiding product defects and the like.

Detailed Description

The present invention will be described in further detail with reference to examples.

A coiling control process for the tail of thin-gauge strip steel or silicon steel comprises the following steps:

when the strip steel with the thickness less than or equal to 2.3mm is coiled or the material code of the coiled strip steel is equal to that of silicon steel and the tail of the strip steel reaches a finish rolling F2 rack, the G roller speed V is₁=K₁XDxω xπ/60; the G roller table speed V is achieved when the tail part of the strip steel or the silicon steel continues to move forward and reaches a finish rolling F6 rack₂=K₂×D×ω×π/60；

Wherein: k₁The first-stage hysteresis rate is 70-60%; k₂The second-stage hysteresis rate is 50-40%; d is the roll diameter of the lower pinch roll; omega is the actual angular velocity of the lower pinch roll;

and under the condition that the strip steel with the thickness of more than 2.3mm is coiled and the material code of the coiled strip steel is not equal to that of the silicon steel, the hysteresis rate of the G roller bed feeding hysteresis speed ranges from 90% to 70%.

The working process of the invention is as follows:

and according to the material code and the thickness parameter of the steel grade sent down in the second stage received by the computer, if the thickness of the strip steel coiled at present is less than or equal to 2.3mm or the material code is equal to the material code of silicon steel, calculating and determining that different values of hysteresis are obtained by the G roller way section when the tail part of the strip steel respectively reaches a finish rolling F2 rack and a finish rolling F6 rack according to the tracking position of the tail part of the strip steel. I.e. the speed V of the G roller way when the tail of the strip steel or silicon steel reaches the finish rolling F2 rack₁=K₁XDxω xπ/60; the G roller table speed V is achieved when the tail part of the strip steel or the silicon steel continues to move forward and reaches a finish rolling F6 rack₂=K₂×D×ω×π/60；

Wherein: k₁The first-stage hysteresis rate is 70-60%; k₂The second-stage hysteresis rate is 50-40%; d is the roll diameter of the lower pinch roll; omega is the actual angular velocity of the lower pinch roll;

and if the strip steel with the thickness larger than 2.3mm is coiled and the material code of the currently coiled strip steel is not equal to the material code of the silicon steel, executing the original control logic to coil the steel by the program. When the delay speed of the G roller is reeled, the delay rate ranges from 90% to 70%.

The invention fully utilizes the characteristics of the coiling machine, selects different G roller bed hysteresis rates after the steel grades are distinguished according to the target thickness and material codes of the rolled strip steel, adopts a sectional control method in the coiling process, completes the stable transition of tail tension, efficiently solves the problem of tail sleeve lifting of thin-specification strip steel and silicon steel, avoids coil shape abnormity caused by tail sleeve lifting, influences normal coil unloading, causes the production of a coiling single machine, and reduces the production efficiency; and the coil shape quality of the product is reduced, the qualified rate of the steel coil is improved, the waste amount of the coil reduction judgment or the coil finishing judgment is reduced, and good benefits are obtained.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.