JPS581064A - Steel band supporting device of continuous plating device - Google Patents

Abstract

PURPOSE:To eliminate the need for using a touch roll, etc., and to prevent the plating surface from being flawed, by providing a linear motor device in the vicinity of a gas wiping nozzle of a continuous plating device so as to be opposed to both the surfaces of a steel band. CONSTITUTION:Plating is performed by soaking a steel band 1 into a plating bath 2 by a soaking roll 3, and the plating layer is thinned by a wiping nozzle 4. Right above this wiping nozzle 4, a linear motor device 6 is provided so as to be opposed to both the surfaces of the steel band 1. As for the linear motor device 6, stator iron cores 7, 8 are provided so as to be opposed to both the sides of the steel plate 1, and to the stator iron cores 7, 8, a 2-phase or 3-phase coil 9 for generating a moving magnetic field is wound. By the coil 9, an eddy current is generated in the steel band 1, force for attracting repulsing the steel band 1 is generated in the stator iron cores 7, 8, and vibration of the steel band 1 is suppressed and it is controlled and supported vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a continuous steel strip V-cutting device Km, and a support device for binding and supporting steel strips.

Toru Qin may be **s*g's continuous method V Now the device is stl to the steel strip to the happy metal plating book! Thereafter, the plating layer is controlled to be as thin as possible using a gas wiping device and wound up. Spraying this gas or gas such as air or steam with a wiping nozzle thins the plating layer, but in order to make the plating layer thinner,
It is necessary to make the opening of the wiping nozzle and the copper band as narrow as possible.

Therefore, if there is vibration in the copper strip, the opening of the copper strip with the nozzle cannot be done with scissors, so the vibration of the steel strip is suppressed and the steel strip is supported vertically.Tyrol is generally used. It is a diagram showing a continuous mesh device. (l) is a steel strip,
The bath, (3) is a dipping roller, (the gas wiping nozzle is a gas wiping nozzle, and (S) is a touch roll. Area 11) is recommended for dipping roll (3).
Crushed and INK plated on the copper band surface, Waibinda Nozu # (
*) After making the Kyochi metal layer as thin as possible, there will be some winding leakage, but as mentioned above, in order to reduce the vibration of the steel strip, it is
Q −k (1) has been hit.

However, in order to suppress the vibration of the copper band, it is necessary to install the wiping nozzle (4) near the wiping nozzle (4).
4) In the vicinity of point 4), there is an island in the shape of plated metal.
There is a disadvantage that ga is born.

One way to solve the drawback of point 2 is to install an air box directly above the wiping nozzle and blow out high-pressure air on both sides of the copper strip. -snretaru (God■■Gift snow-s@oz
g-).

However, since this method jets high-pressure air onto the surface of the steel plate, the optimum air pressure control mechanism is complicated. In addition, the same layer of Keyaki that spews S* air and has a bad effect on the galvanizing process (galvanizing process), etc. due to the cooling of the steel plate and the holding of the plated steel plate at a high temperature in the post-plating process. be.

This invention is advantageous from this point of view. 1. It is possible to avoid dusting the steel strip layer by touching it (also, the steel plate will not be cooled). In addition, the control is very simple - it simply provides a support device for the copper strip, and its requirements and number and ζlb are such that the copper strip is placed in the vicinity of the gas wiping nozzle of the continuous plating device. -The feature is that a linear motor device is provided between the WE fence and the fence.

The explanation will be given below based on the drawings.

FIG. 113 is a diagram showing an embodiment of Jin's invention.

The copper strip (1) is immersed in a plating bath (
A linear motor device (@) is provided directly above the wiping nozzle (4) facing each other on both sides of the steel strip (1).

FIG. 3 shows the island number in FIG. 7 showing the linear motor device.

The linear motor device (・) consists of a stator core (Ma), (s
A two-phase or three-wheel coil (9) that generates a moving magnetic field is wound around the stator core (9). , an eddy current is generated in the steel strip (1), and this eddy current and the shifting magnetic field cause -electronic iron core (?), ($1 to have a copper strip (1)
) is sucked in, generates summer power, suppresses vibration of the steel strip, and operates the control room in an upright manner. Also, K, which controls the repulsion and repulsion force depending on the thickness of the steel strip (1) or the state of vibration, is the coil (
Easily control the current or frequency of 11Kml
It is magnificent.

The width of this invention support device is 1.slI~I RIs DM
As a result of continuously galvanizing a cold-rolled steel plate with a thickness Q of 355w to 4.5cm, and performing continuous galvanizing while maintaining a current of 100A to 500A with this linear motor device, the conventional When the copper strip is supported by a touch roll, the #&width of the copper strip is about 10 m, but after implementing the present invention, the amplitude of the copper strip is suppressed to 2ff to 3H, and as a result, the gap between the wiping nozzle and the copper strip is reduced. The conventional 15M was now 5m+, and the plating thickness of the steel plate, which used to be 15μ, was reduced to 5μ, and no eaves on the plated surface could be seen.

As described above, the supporting device of this invention suppresses the vibration of the copper strip and supports it by the repulsive force of the linear motor device, and does not come into contact with the copper strip like a touch roll, so it does not touch the plated surface. There's nothing to cover up. Furthermore, since eddy currents are generated in the steel strip, the steel strip is heated to a temperature that is advantageous for alloying treatment after plating.

Furthermore, the supporting device of the present invention includes a plurality of supporting devices in the width direction of the copper strip,
By providing linear motor devices that can each be controlled independently, the temperature in the width direction of the copper strip can also be controlled at the same time. This effect controls the heating temperature by changing the strength of eddy currents generated in the copper strip in the width direction. FIG. 4 shows 345 independent linear motor devices provided in the width direction of the copper strip. That is, it is possible to independently control the glue near motor devices 00i1 (11) on both sides of the copper strip and the glue near motor device α on the center side.

The heating temperature is controlled by changing the current flowing through each of the three linear motor devices to change the eddy current generated in the width direction of the copper strip.

Normally, the temperature of the copper strip after plating becomes lower as both sides are cooled. FIG. 5 is a diagram showing a general temperature curve in the width direction 1 of the copper strip after plating. The horizontal axis shows the position in the width direction of the copper strip, and the vertical axis shows the temperature at each position. As is clear from the figure, the temperature of the copper strip after plating is low because both sides are cooled, and the temperature in the center is high. If alloying treatment (galvanization treatment) or the like is performed on the blade V-layer while maintaining such a temperature distribution, the alloyed layer will become non-uniform. In the case of such a humidity curve, if more current is passed through the linear motor device 01) of the support device of this invention than the linear motor device 02) on the center side, both sides of the copper strip will be heated and the copper The humidity curve in the width direction of the band is as shown by the dotted line in Figure 5, and a uniform temperature distribution can be obtained.

As described above, the supporting device of the present invention is capable of supporting the copper strip while suppressing its vibration, and at the same time can also control the temperature in the width direction of the steel strip, and has great effects when implemented in a continuous plating device. It is.

[Brief explanation of drawings]

Fig. 1 shows an i-continuous plating device for copper strips, Fig. 2 shows an embodiment of the present invention, Fig. 3 shows a beam near motor device, and Fig. 4 shows the width direction of the copper strip. Figure iI5 shows a typical temperature curve across the width of a copper strip after plating. l... Steel strip, 2... Plating bath, 3... Dipping roll, 4... Wiping nozzle, 5... Touch roll, 6
... Linear motor device, 7.8 ... Stator core,
9...Three-phase coil, 10111-・Both sides linear-
Motor device, 12... linear motor device on the center side. Applicant Sumitomo Metal Industries Co., Ltd. Agent Oshi 1) Yoshihisa 11!1...
:(1300mm)

Claims (1)

[Scope of Claims] l After the copper strip is immersed in a metal plating bath, the plating layer is attached by gas wiping, and the copper strip is placed in the vicinity of the gas wiping device. A copper strip support device characterized in that a linear cage device is provided opposite to both pictures. Document support device.