JPH089800B2 - Electrolytic polishing equipment for steel sheets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention is used for surface polishing and passivation of stainless steel plates, stainless clad steel, general steel plates and other metal plates, or pretreatment of mild steel coating. The present invention relates to a suitable electrolytic polishing device for steel plates and the like.

<Prior Art> Conventionally, a belt grinder is generally used for surface polishing of stainless steel and a stainless clad steel plate after thick plate rolling, but the polishing time is 2 to 3 (hours / steel plate). In addition, the belt wear is severe and the belt cost is high,
There was a problem that the polished surface was warped after polishing and press correction was required.

<Problems to be Solved by the Invention> The present invention provides a highly efficient polishing apparatus capable of shortening the polishing time.

Further, the present invention provides a polishing apparatus in which almost no heat is generated during polishing, and therefore, the width warp of the polishing surface is not generated.

<Means for Solving the Problems> The present invention relates to an electrolytic polishing apparatus for a steel plate or the like in which a steel plate or the like is used as an anode and a polishing head is used as a cathode, and an electrolytic solution is arranged between the electrodes, and a traveling carriage that travels along the steel plate or the like. , A polishing carriage transverse to the traveling carriage is arranged, and a plurality of rows of polishing pads lined with electrodes are arranged in a zigzag pattern on the polishing carriage, and the polishing head is made of a steel plate or the like provided so as to be rotatable. It is an electrolytic polishing apparatus such as a steel plate having an electrolytic polishing apparatus or an apparatus for cleaning the electrolytic solution after electrolytic polishing mounted on a traveling carriage.

<Operation> First, the configuration of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing the overall structure of the present invention. On the other hand, Fig. 2 is the first AA view, and the side view of the polishing trolley is
The figure is a BB view of FIG. 1 and is an elevation view of the polishing cart.

In FIG. 1, reference numeral 1 denotes an electrolytic polishing material such as a steel plate. A rail 2 is arranged along the electrolytic polishing material, and a traveling carriage 3 travels on the rail 2. Reference numeral 4 is a traveling vehicle drive device.

Further, on the traveling carriage 3, a polishing carriage 5 traversing the traveling carriage 3 is mounted. Reference numeral 6 is a polishing carriage drive device.

The polishing carriage 5 is provided with a polishing head 9 composed of a polishing pad 14 lined with an electrode 13 and an electrode drive shaft 11,
A plurality of rows are arranged in a zigzag pattern through the distribution gear box 7 and the lifting cylinder 8.

4 and 5 are an enlarged side view and a bottom view of the electrode 13. The electrode 13 is fixed to the electrode drive shaft 11 with an insulating fastening bolt 12 via an insulating cover 15. On the other hand, the electrode 13 is in contact with a conductive brush 18 fixed to the cover 10 via a bracket 17 so as to be able to conduct electricity.

The electrode heads thus constructed are arranged in a plurality of rows in a zigzag pattern, as shown in FIG. 19
Indicates wiring. Here, it is desirable to change the rotation direction of the polishing head including the electrode head for each row as shown by the arrow in FIG. FIG. 7 shows the structure of the power transmission gears in the distribution gear box 7 for imparting such rotation to the polishing heads arranged in a zigzag pattern in a plurality of rows.
The number of columns is two in this example, but it may be three or more. Here, a is a motor shaft gear, b is an electrode rotation gear, and c
Is an intermediate gear.

Further, this electrode needs to be pressed against the steel plate at a constant pressure of about 50 g / cm ^2, and an elevating cylinder 8 for pressing the polishing head is provided on the polishing carriage 5.

Since the apparatus of the present invention is constructed in this way, a large amount of heat is not generated, and therefore the plate is not distorted, and electrolytic polishing by the buff and the electrode can be achieved with high efficiency. Further, according to the present invention, since the power transmission distribution gear can be configured on the trolley away from the corrosive atmosphere near the steel plate, maintenance of the device is easy.

Further, FIGS. 8 and 9 are a plan view and a side view showing another embodiment of the present invention. After the electrolytic polishing device on the traveling carriage, a scraper 20 for removing the electrolytic solution after electrolytic polishing and a lifting device 21 for the scraper 20 are provided, a spray header 22 for diluting the electrolytic solution, and a brush for cleaning. It has a roll 23. The scraper 20 and the spray header 22 are attached to a beam 28 provided on the truck 3, and the brush roll 23 is attached to the beam 28 by a bracket.
The brush roll tilting device 25 can be tilted via the lever 26 and the lever 24, and can be rotationally driven by the brush roll driving device 27.

 Next, the electrolytic polishing work with the apparatus of the present invention will be described.

That is, with respect to the steel plate 1 on which the electrolytic solution is sprayed, the steel plate 1 serves as an anode and the electrode side serves as a cathode, and the electrode 13 and the polishing pad 14
Rotate the polishing heads 9 arranged in a zigzag pattern,
Next, while holding the polishing head 9 against the steel plate 1 by the elevating cylinder 8 at a constant pressure, the polishing carriage 5 travels, first polishes in the width direction of the steel plate, and then the traveling carriage 3 travels to polish the next width. It is something that is carried out and polished in order.

When the polishing is completed, the sludge-like electrolyte remains on the steel sheet. Although various methods can be used as the cleaning method, for example, in order to reduce the waste liquid treatment load of the subsequent equipment and to reduce the waste liquid amount, the sludge-shaped waste liquid is first recovered by the scraper 20, and then the thin film-type electrolysis is performed. It is desirable to wash with a spray header 22 and a brush roll 23 for the purpose of washing the liquid.

<Effects of the Invention> According to the present invention, it is possible to significantly reduce the polishing time, reduce the polishing cost, and omit the press straightening after polishing. Also,
As a pretreatment for the coating of general steel sheets, by forming a coating of iron sulfate with sulfuric acid as the electrolytic solution, it is possible to prevent oxidation of the coated surface from the side of the steel sheet and to improve the peelability of the coating, that is, to extend the service life. it can.

[Brief description of drawings]

Fig. 1 is an overall plan view of the present invention, Fig. 2 is a view of AA in Fig. 1, a side view of the polishing trolley, Fig. 3 is a view of BB in Fig. 1, an elevation view of the polishing trolley, and Fig. 4 are FIG. 5 is a side view of the main part of the electrode, FIG. 5 is a view from C of FIG. 4, FIG. 6 is a view of E of FIG. 3, configuration diagram of the electrode head, and FIG. 7 is a view of DD of FIG. Configuration diagram of transmission gear,
FIG. 8 is a plan view of one embodiment of the present invention, and FIG. 9 is a side view. 1 ... Steel plate, 2 ... Rail, 3 ... Traveling carriage, 4 ... Traveling carriage drive, 5 ... Polishing carriage, 6 ... Polishing carriage drive, 7 ... Distributing gear box, 8 ... Lifting cylinder , 9 …… polishing head, 10 …… cover, 11 …… electrode drive shaft, 12 …… fastening bolt (insulator), 13 …… electrode (copper plate), 14 …… polishing pad, 15 …… insulation cover, 16 …… Missing number, 17 …… Bracket, 18 …… Conductive brush, 19 …… Wiring, 20 …… Scraper, 21 …… Scraper lifting device, 22 …… Splay header, 23 …… Brush roll, 24 …… Lever, 25 …… Brush roll tilting device, 26 …… Bracket, 27 …… Brush roll driving device. 28 ... Beam

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nei Naruhara 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Prefecture (no house number) Inside the Mizushima Works, Kawasaki Steel Co., Ltd. 1 chome (without street number) Kawasaki Steel Works Mizushima Steel Works

Claims (2)

[Claims] 1. An electrolytic polishing apparatus for a steel plate or the like in which a steel plate or the like is used as an anode and a polishing head is used as a cathode, and an electrolytic solution is arranged between the electrodes, and a traveling carriage that travels along the steel plate or the like and traverses on the traveling carriage. And a plurality of rows of polishing heads made of polishing pads lined with electrodes are arranged in a zigzag pattern on the polishing carriage, and the polishing heads are rotatably provided. Electropolishing equipment for steel plates. 2. An electrolytic polishing apparatus for a steel plate or the like according to claim 1, wherein an apparatus for cleaning the electrolytic solution after electrolytic polishing is mounted on the traveling carriage.