JP3241563B2 - Winding method for thin coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention measures coil build-up, and detects a coil in which the shape of a rolled-up steel sheet does not collapse.
The present invention relates to a method for winding up a thin-plate coil which is controlled to an amount equal to the field-up amount, and particularly to manufacturing a thin-plate coil product in a continuous thin-plate coil manufacturing line. The production line refers to a continuous annealing line, a continuous plating line, and a recoiling line.

[0002]

2. Description of the Related Art A steel sheet 1 is a cold-rolled steel sheet or a hot-rolled steel sheet.
For example, in the case of a continuous plating line, as shown in FIG. 3, after the steel sheet 1 is unwound by the coil holder 11, the temperature is increased to the annealing temperature or the plating temperature by the furnace 12. Then, it is immersed in the plating pot 13 and wiped
In controlling the adhesion amount of the zinc adhered to the steel plate 1. Plated steel sheet 1 a steel plate 1 by skin pass 16 or leveler 17 is cooled to the temperature required for correcting the shape of the steel plate 1 in skin pass 16 or leveler 17 by the cooling device 15
To correct the shape of After that, taken Ki wound in the tension reel 20 is examined in the inspection table 18. Shah 19 steel plate 1
It is used for cutting the defective part and for split cutting for managing the coil to a predetermined mass. Conventionally, (referred to as or flatness) shape of the steel plate a predetermined extended had managed in the management provisions applied to the steel plate 1 by the skin pass 16 or leveler 17. However, the shape often undergoes local plastic deformation due to the build-up of the coil generated during coil winding, and when the coil is subsequently unwound, the shape is often deteriorated (shape collapse). Build-up in the local change in thickness of the width direction or length direction of the steel plate <br/> coil
Stored in the case of wound Ki take it is to the local upsurge. This build-up is often seen in the case taken to Ki wound to hard to be very discovery coil in the flat state of the steel plate.
In addition, during winding of the coil, the build-up amount cannot be measured, or even if the build-up amount can be measured, accuracy is often poor due to visual observation, and reliable management is difficult.

[0003]

In the conventional "coil winding method", in the case of manufacturing on a line, the amount of build-up is difficult to understand, so that the cause of build-up can be found at an early stage and the manufacturing conditions can be adjusted based on the cause. It was difficult to field back. In addition, even if the build-up of the coil is measured, the measurement accuracy is low due to manual work using a skimmer or the like, and the work load is large. Also,
Even in quality inspection at the time of delivery to the customer, the build-up measurement accuracy was poor, and the yield was reduced due to poor quality and excessive inspection management.

[0004]

The present invention SUMMARY OF] has been made to advantageously solve the problems of the prior art, when that preparative plated steel plate 1 by applying a predetermined tension by the tension reel 2,
Allowed installing a build-up sensor 4 on the outer peripheral surface of the coil to be taken-out wound <br/> by the tension reel 2, the build-up sensor 4 a build-up amount in the width direction of the steel plate 1 from the coil end surface A to the coil end surface B Measure continuously and roll
Winding thickness of coil that does not cause shape collapse of rolled steel sheet
The feature is to manage the build-up amount so that
This is a method of winding a thin plate coil .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a diagram for measuring the build-up of a coil according to the present invention on-line. First, the steel plate 1,
A predetermined tension is given by the tension reel 2
Wound Ki taken. The build-up sensor 4 is installed on an outer peripheral surface of a coil wound by the tension reel 2. Built-up sensor 4 is measured continuously build up amount in the width direction of the words steel plate 1 from the coil end surface A to the coil end surface B. The measurement result is displayed as a build-up amount on the monitor 6 or the recorder 7 via the signal processing device 5.

The build-up sensor 4 includes a method of simultaneously measuring the entire width from the coil end surface A to the coil end surface B and a method of continuously measuring while moving one point in the width direction from the coil end surface A to the coil end surface B. . Either method may be adopted.

FIG. 2 is a diagram for measuring the build-up of a coil according to the present invention on-line. First, the steel plate 1 after taken Ki wound in the coil 3 is disconnected from the plating line. The coil 3 is placed on the floor or on a predetermined table. Buildup sensor 4 is measured continuously build up amount in the width direction of the coil end face B to i.e. steel plate 1 on the outer peripheral surface from the seated is the coil end surface A so as to measure the coil 3. The measurement result is displayed as a build-up amount on the monitor 6 or the recorder 7 via the signal processing device 5.

The build-up sensor 4 has a method of simultaneously measuring the entire width from the coil end surface A to the coil end surface B, and a method of continuously measuring while moving one point in the width direction from the coil end surface A to the coil end surface B. . Either method may be adopted.

FIG. 4 is a diagram showing how the build-up amount of the coil according to the present invention is managed, and shows the relationship between the coil winding thickness, the coil build-up amount, and the strength of the steel sheet. The thickness X axis Maki coil, Y-axis shows the build-up of the coil, depending on the strength of the steel sheet, shape collapse occurs
Not the region and shaped region of collapse occurs with the X-axis and Y-axis
The relationship is shown.

[0011] As a result of taking Maki the coil under the condition of a region where the shape collapse does not occur, so that the Maki unwound steel plate does not disturb the shape. For this purpose, the flatness of the steel sheet can be maintained by managing the build-up amount of the coil generated at the coil steps to a predetermined value that does not cause shape collapse . Build up quantity of managing buildup of coils to a predetermined value is affected by the thickness Maki strength and the coil of the steel plate. That is, when large and when the intensity of the steel plate is small buildup of coils in the same Maki thickness when strength of the steel plate is small, it is necessary to manage less. For example, it described in point A in FIG. 4, the strength of the steel plate is the case of 500mm thickness Maki coil 20 Kg / mm ^2. This means that the coil buildup management value at this time is controlled to 0.5 mm or less. In other words, the coil build-up value
Is 0.5 mm, the coil winding thickness is 500 m
m or less means that the occurrence of shape collapse can be prevented.
I taste.

[0012]

As described above, according to the " winding method of a thin plate coil" according to the present invention, the amount of build-up can be determined quickly when manufacturing in a line, and the build-up amount is wound.
Feedback to the picking conditions, the shape of the unrolled steel sheet
Build the coil so that the coil does not collapse.
By controlling the do-up amount, defective coils due to shape collapse can be minimized. Also, the build-up measurement accuracy is good and the work load is small. In addition, the quality of the coil when delivered to the customer can be controlled enough to be delivered, and the customer is trusted.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating a main configuration of a coil build-up according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating off-line measurement of a coil build-up according to an embodiment of the present invention.

FIG. 3 is an overall schematic diagram of a plating line.

FIG. 4 shows the relationship between coil winding thickness and coil build-up amount .
1 is a diagram showing a build-up management method according to the present invention .

[Explanation of symbols]

1 steel plate 2 tension reel 3 coil 4 buildup sensor 5 signal processor 6 monitors 7 recorder

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-92216 (JP, A) JP-A-55-11489 (JP, A) JP-A-2-107752 (JP, A) 117891 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21C 47/00 C23C 2/40

Claims (1)

(57) [Claims] The method according to claim 1 steel sheet during that preparative Maki giving a predetermined tension by the tension reel, allowed installing a build-up sensors on the outer peripheral surface of the coil taken seeded by the tension reel, the build-up sensor from the coil end surface A The build-up amount in the width direction of the steel sheet is continuously measured up to the coil end surface B , and the shape of the unrolled steel sheet collapses.
Build-up amount so that the coil thickness is not generated
A method for winding a thin coil, characterized in that