JPH077327Y2 - Electrolytic polishing device for metal plates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a metal used for surface polishing and passivation of a metal plate surface, particularly a stainless steel plate, a stainless clad steel, or a pretreatment of mild steel coating. The present invention relates to a plate electrolytic polishing apparatus.

<Prior Art> Surface grinding of stainless steel, stainless clad steel plate, etc. after thick plate rolling is generally performed using a belt grinder, but the belt cost is high due to the severe wear of the belt. There is a problem in that heat is generated by polishing, the polished surface warps after polishing, and press correction is required. In order to solve this problem, an electropolishing method (see, for example, JP-A-64-4500) is adopted.

<Problems to be Solved by the Invention> In the above electrolytic polishing method, there is a problem that the surface of the metal plate cannot be inspected unless the waste electrolytic solution scattered on the metal plate after polishing is washed and the product value is reduced. It was

The present invention solves the above-mentioned problems of the prior art, and provides an electrolytic polishing apparatus for a metal plate, which can obtain a high quality surface at low cost without hindering the inspection of the surface of the metal plate after electrolytic polishing. It is intended to be provided.

<Means for Solving the Problems> In order to achieve the above object, according to the present invention, a traveling carriage and a polishing head device provided on one surface of the traveling carriage and having a paste supply device and a counter electrode are mounted. The polishing head moving carriage, and a cleaning device provided on the other surface of the traveling carriage, holding a paste containing an electrolyte between the metal plate to be polished and the counter electrode, the metal plate and the It is an electropolishing apparatus which energizes through the paste between a counter electrode, Comprising: The said cleaning apparatus is a 1st scraper and a 1st injection nozzle from the downstream side toward the upstream side along the running direction of the said traveling trolley | bogie. A cleaning brush, a second spray nozzle, and a second scraper, which are arranged in this order, and the first scraper has a lower end that is inclined and contacts the metal plate over the entire width direction of the metal plate. The first injection nozzle includes an injection port that opens from one end side to the other end side in the plate width direction of the metal plate and obliquely downward, and the cleaning brush forms the metal plate. A brush is attached outward from the outer peripheral surface of the rotating body having the same length as the plate width, and the second injection nozzle is opened toward the contact surface between the cleaning brush and the metal plate. An electropolishing apparatus for a metal plate, characterized in that the second scraper comprises a plate-shaped member having a lower end that is inclined and contacts the metal plate over the entire surface in the plate width direction of the metal plate. Provided.

Hereinafter, the present invention will be described in more detail.

The electropolishing of the surface of the metal plate in the present invention means a method of electrochemically polishing the surface of the metal plate.For example, electrolytic pickling for performing descaling, so-called electrolytic polishing, passivation treatment, electrolytic coloring treatment and Electroplating etc. can be mentioned.

The metal plate used in the present invention may be any metal plate that requires surface polishing, and examples thereof include steel materials such as stainless steel, ordinary steel, and low alloy steel, copper, nickel, aluminum, titanium, chromium, and the like. It broadly includes non-ferrous materials and their alloy materials or metal materials coated with various metals.

The electrolyte used in the present invention may be any electrolyte contained in the above-mentioned electrolytic solution necessary for electropolishing as long as it can be made into a paste, and if necessary, an acid, a base, a salt and a mixture thereof. Can be used.

The paste used in the present invention is, of course, a paste prepared by adding the above electrolyte alone or adding water,
Furthermore, sodium polyacrylate, or silicon dioxide,
It may be a paste prepared by adding a pasting agent such as sodium alginate and manufactured by any method as long as it is conductive.

FIG. 1 is a plan view of an apparatus showing one embodiment of the present invention, and FIG. 2 is a partial sectional view.

A polishing head moving carriage 3 is provided on a traveling carriage 2 traveling on the track 1 so as to be traversable in the traveling direction.
Reference numeral 4 denotes a traverse rail of the moving carriage 3.

A paste tank 5, a paste pump 6, and a polishing head device 7 as a paste supply device are mounted on the movable carriage 3.

The polishing head device 7 in the present invention uses a metal plate to be surface-treated as one electrode, holds a paste containing an electrolyte between the surface of the metal plate and the counter electrode, and sandwiches the paste to form the counter electrode. This is an apparatus for electrolytically polishing the surface of a metal plate by facing the surface of the metal plate and passing electricity through the electrolyte between the metal plate and the counter electrode.

The polishing head device 7 will be described below with reference to one embodiment shown in FIGS. 3 and 4, but is not limited thereto.

In FIG. 3, the polishing head device 7 comprises an elevating cylinder 10 fixed by a fixture 9 to a column 8 standing on the moving carriage 3.
And the piston 11 that moves up and down by the operation of this cylinder 10.
A support member 12 that is fixed to one side and moves up and down along the column 8.
A fixing portion 13 is attached to the other side of the supporting member 12, and a polishing head supporting member 15 fixed to the fixing portion 13 and a rotor 16 of the supporting member 15 have an upper end of a supporting rod 17 fixed thereto and a lower end thereof. It is composed of an electrode head 18 suspended from the.

An electrode head 18 is provided at a central portion of the traveling carriage 2 so that the electrode head 18 can move when the moving carriage 3 is laterally moved.
The opening 20 is provided in the moving range of the.

The electrode head 18 has an electrode portion (counter electrode) 22 rotated by an electrode rotating device 21 and a pressing cylinder 24 for bringing the electrode portion 22 into close contact with a polished portion of a material 23 to be polished. The electrode rotating device 21 is not limited, and a known device such as one using a driving device, a sprocket and a chain, one rotating each using an electric motor, or the like can be used. The number of electrode parts 22 is not limited.

An example of the electrode portion 22 is shown in FIG. The paste that has reached the paste supply port 26 from the supply pipe 25 via the paste supply pipe and the paste supply head (not shown) from the paste tank 5 on the moving carriage 3 is supplied to the pad 28 provided on the lower surface of the electrode 27. It

Power is supplied to the electrode 27 from a power source (not shown) via the cord 29 and the Cu ring 30. Reference numeral 31 is, for example, a disc made of MC nylon.

Next, an operation example of the polishing head device 7 will be described. After moving the traveling carriage 2 and arranging it so that the opening 20 thereof is at a predetermined position of the material 23 to be polished, operating the elevating cylinder 10 to adjust the electrode head 18 to a predetermined height, the electrode rotating device 21 The electrode portion 22 is rotated by the operation, and while the movable carriage 3 is moved, the paste is poured between the surface of the material to be polished 23 via the pad 28 and the polishing surface of the material to be polished 23 is polished.
When the polishing for one stroke is completed, the traveling carriage 2 is moved by one pitch, and the polishing for one stroke is further performed.

The lifting means for the electrode head 18 is not limited to these, and known means such as a screw type can be used.

Next, a cleaning device 32 for removing the waste electrolytic solution scattered on the polishing surface after polishing the material to be polished 23 will be described.

The cleaning device 32 is attached to the lower surface (upper lower surface as viewed in FIG. 1) of the traveling vehicle 2 on the upstream side in the traveling direction. 5th below
Description will be given with reference to the drawings.

The upper ends of the columns 33 and 34 are fixedly mounted on the lower surface of the traveling carriage 2 (not shown), and the lower ends thereof are fixed to the base 35.

The base 35 has a first scraper 36, a first nozzle 37, a rotating brush 38, a second nozzle 39, and a second scraper 40 in order from the downstream side to the upstream side in the traveling direction of the traveling vehicle 2 (the direction of the arrow in FIG. 5). Is provided.

The first scraper 36 is for primary removal of the waste electrolytic solution having a thickness of 5 to 20 mm scattered on the surface of the material 23 to be polished at the time of electrolytic polishing to reduce the cleaning load by the subsequent rotary brush 38. The first nozzle 37 is provided between the first scraper 36 and the rotating brush 38 because if the thickness of the waste electrolyte is thin, it becomes semi-cured and becomes difficult to remove.

The first scraper 36 is provided on the entire surface of the material 23 to be polished in the plate width direction, is slightly inclined and comes into contact, and has a thickness of 9 m.
For example, a urethane rubber plate of about m is used.

The first nozzle 37 has an injection port on the base 35 so as to inject the cleaning liquid from one end side to the other end side in the plate width direction of the material 23 to be polished.
37a is provided on the other end side in the plate width direction and obliquely downward.
The diameter of the injection port 37a is not limited and may be, for example, about 15 mm.

The rotating brush 38 is provided on the support post 34 by attaching brushes 38b outward at appropriate intervals on the outer peripheral surface of the rotating body 38a having an axial length that is at least the same as the plate width of the workpiece 23. It is rotated by an appropriate drive means 41.

The material of the brush 38b may be nylon, and the length from the axis 38c of the rotating brush 38 to the tip of the brush 38b is 80% more than the distance between the axis 38c and the material 23 to be polished.
It is recommended to install it for about 100 mm longer.

The second nozzle 39 has injection ports 39a provided at a plurality of positions in the plate width direction of the material 23 to be polished so as to face the surface of the rotary brush 38 contacting the material 23 to be polished. Although the number of nozzles is not limited, it is preferable that the injection liquid is provided so as to reach the entire surface in the plate width direction.

The second scraper 40 is provided on the entire surface of the material 23 to be polished in the plate width direction, and a plate having the same shape and material as the first scraper 36 is used.

The cleaning liquid used for the first and second nozzles 37, 39 is water.

Next, an operation example of the cleaning device 32 will be described.

Material to be polished whose surface is polished by the polishing head device 7
23 moves below the cleaning device 32 by the movement of the traveling carriage 2, and further, by the movement of the traveling carriage 2, the first scraper 36 first removes the waste electrolyte, and then the first scraper.
A rotating brush that turns the waste electrolyte into a wet state by the cleaning liquid sprayed from the nozzle 37 and rotates clockwise as seen in FIG.
The surface of the material 23 to be polished is cleaned by the spray cleaning liquid of the second nozzle 39 from 38 and its rear side. The liquid mixture with the waste electrolyte is removed from the other end side in the plate width direction by the jet liquid of the first nozzle 37. Further, the waste electrolytic solution or cleaning solution remaining on the surface of the material to be polished 23 after cleaning is wiped off by the second scraper.

Thus, the surface of the material to be polished 23 is completely cleaned in one pass by the cleaning device arranged in one row.

<Examples> The present invention will be specifically described below based on Examples.

(Example 1) Using a stainless steel plate, surface polishing was performed under the following conditions by the electrolytic polishing apparatus shown in Figs.

Number of electrodes, rotation speed: 6 pieces, 120r.pm Adhesion thickness of waste electrolyte immediately after polishing: 1 to 15mm Diameter of first nozzle injection port, injection amount: 15mm, 40l / min of second nozzle injection port Diameter, total injection amount: 15 mm, 40 l / min Rotation speed of rotating brush: 60-100 rpm Cleaning speed (moving speed of trolley): 15 m / min Steel plate surface after polishing / cleaning has no residue of paste and flaw inspection In contrast, no press straightening was required and a high quality polished surface was obtained.

<Effect of the Invention> Since the present invention is configured as described above, it is possible to significantly reduce the polishing cost.

Also, it became possible to omit the press straightening after polishing.

Further, the cleaning devices are arranged in one row and the waste electrolyte can be completely removed in one pass.

Further, by using the device of the present invention, the surface inspection can be surely carried out, and the metal plate having the high quality polished surface can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of an electrolytic polishing apparatus showing an embodiment of the present invention. FIG. 2 is a partial sectional view taken along the line II-II in FIG. FIG. 3 is a side view of the polishing head device. FIG. 4 is a partial cross-sectional view of the electrode portion. FIG. 5 is a cross-sectional explanatory view showing an example of the cleaning device. Explanation of code 1 ... Track, 2 ... Truck, 2a ... Pad exchange yard, 3 ...
Polishing head moving carriage, 4 ... Traverse rail, 5 ... Paste tank, 6 ... Paste pump, 7 ... Polishing head device, 8
... Posts, 9 ... Fixing devices, 10 ... Lifting cylinders, 11 ... Pistons, 12 ... Supporting members, 13 ... Fixed parts, 15 ... Polishing head supporting members, 16 ... Rotor, 17 ... Supporting rods, 18 ... Electrode heads, 20
... Aperture, 21 ... Electrode rotating device, 22 ... Electrode part (counter electrode), 23
… Abrasive material, 24… Pressing cylinder, 25… Supply pipe, 26… Paste supply port, 27… Electrode, 28… Pad, 29… Cord, 30
... Cu ring, 31 ... Disc, 32 ... Cleaning device, 33,34 ... Posts, 35 ... Base, 36 ... First scraper, 37 ... First nozzle, 37a ... First nozzle injection port, 38 ... Rotating brush, 38a ... Rotating body, 38b ... Brush, 38c ... Axis center, 39 ... Second nozzle, 39a
… Second nozzle injection port, 40… Second scraper

Claims (1)

[Scope of utility model registration request] 1. A traveling carriage, a carriage for moving a polishing head having a paste supply device and a counter electrode provided on one surface of the traveling carriage, and a cleaning device provided on the other surface of the traveling carriage. Comprising: holding a paste containing an electrolyte between the metal plate to be polished and the counter electrode, an electropolishing device for energizing through the paste between the metal plate and the counter electrode, the cleaning device, A first scraper, a first injection nozzle, a cleaning brush, a second injection nozzle and a second scraper are sequentially arranged along the traveling direction of the traveling vehicle from the downstream side to the upstream side. Is a plate-shaped member having a lower end that is inclined over the entire width direction of the metal plate and comes into contact with the metal plate, and the first injection nozzle is provided from one end side to the other end side of the metal plate in the plate width direction. For The cleaning brush has an injection port that opens obliquely downward, and the cleaning brush traverses the metal plate in the plate width direction, and the brush is attached outward from the outer peripheral surface of the rotating body having the same length as the plate width. The second injection nozzle has an injection port opened toward the contact surface between the cleaning brush and the metal plate, and the second scraper is inclined over the entire width direction of the metal plate. An electropolishing device for a metal plate, comprising a plate-shaped member having a lower end that contacts the metal plate.