JP3219350B2 - Surface treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed surface treatment apparatus capable of efficiently and continuously performing various surface treatments such as cleaning and application of a lubricant on a long wire material or a long wide sheet material. .

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional surface treatment apparatus is provided with rollers (32) on both the inside and outside of a treatment tank (31) to roll a wire (33) or a sheet-like material. Bend at (32),
It was immersed in the surface treatment liquid (34) in the treatment tank (31) to perform the surface treatment. In this case, since the wire (33) or the sheet-like material is bent by the roller (32), a strong tension is applied to the surface on the opposite side of the roller (32), and the components and the ionized component in the processing liquid (34) are reduced. ) Or fine cracks or crystal grain boundaries on the surface of the sheet-like material in the form of ions or other forms, which may have an adverse effect such as rusting after the treatment.

In the case of hot-dip galvanizing, for example, a wire or plate is degreased with, for example, sodium orthosilicate, pickled with hydrochloric acid or sulfuric acid, fluxed with ZnCl ₂ or NH ₄ Cl, and dried. Then, it is immersed in a hot-dip galvanizing bath (bath temperature 450 ° C., immersion time within 1 minute) to form a galvanized layer on the surface, and cooled with water to obtain a galvanized product.

Here, in the case of pickling work, chlorine in a dilute hydrochloric acid solution as a treatment liquid causes fine cracks on the surface of a wire (33) or a sheet-like material whose mouth is opened due to the tension at the time of bending. Penetrate into the grain boundaries in the form of chloride ions. Also, the acidity of ZnCl ₂ and N
HCl is generated in the processing solution by the thermal decomposition of H ₄ Cl, and the wire (33)
And chlorine ions penetrate into the surface of sheets and sheets.

When galvanizing (immersion galvanizing) treatment is performed in this state, the chlorine and chlorine ions remain in the form of being confined under the galvanized layer, and gradually become a product. There is a problem that fine rust is generated on the surface of the product, and the commercial value is significantly reduced.

Further, even if the washing process is performed after the pickling process, what once enters the inside of the surface of the material cannot be removed by the washing process and appears as a defect of the product as described above.

In the conventional surface treatment, the wire (33) or sheet-like material is simply passed through the processing solution or the processing solution is agitated so that the surface of the wire (33) or sheet-like material is positively treated. Therefore, the physical action acting on the surface was small, and the immersion distance had to be increased. Therefore, the conventional surface treatment tank is long, and as a result, there is a problem that a large site area is required.

[0008]

The technical problem to be solved by the present invention is to make it possible to process a surface-treated material such as a wire or a sheet in a straightened state while extending the length of the processing tank. It is to be as compact as possible.

[0009]

A surface treatment apparatus (A) according to the present invention comprises: a chemical solution tank (2) for storing a chemical solution (1); and a treatment solution disposed in the chemical solution tank (2). The tank (4) is immersed in the chemical solution (1) in the treatment liquid tank (4), and is opened to the surface treatment pipe (5) where the long surface treatment object (3) is surface-treated while passing. An ejector (7) having a chemical solution ejection port (6) for ejecting the chemical solution (1) at a high pressure in the surface treatment pipeline (5), and the chemical solution (1) from the chemical solution tank (2) to the ejector (7). A pumping pump (8) for pumping and a surface to be drilled in the chemical solution tank (2) and the processing liquid tank (4) in line with the pass line (P) of the surface treatment pipe (5) of the ejector (7) The through-holes (9a) (9b) (10a) (10b) for inserting the processed object, and the through-holes (9a) (9b) of the chemical tank (2) are at the liquid level (L1) of the chemical tank (2). It is characterized by being formed above.

Thus, when the long workpiece (3) is run in the ejector (7), the chemical (1) ejected at a high pressure from the chemical ejection port (6) receives the long workpiece (3). A strong collision with the surface of (3) causes a physical impact pressure to act on the surface of the long workpiece (3). At the same time, the ejected chemical liquid (1) sucks the chemical liquid (1) in the processing liquid tank (4) from the rear of the ejector (7) and flows through the surface treatment pipe (5) of the ejector (7). In addition, the effect of cleaning the surface of the long object to be treated (3) can be enhanced.

Further, a processing liquid tank (4) is provided in the chemical liquid tank (2), and an ejector (7) is immersed in the chemical liquid (1) in the processing liquid tank (4), and The chemical solution (1) is fed from the 2) to the ejector (7) by the pressure pump (8), so that the chemical solution (1) supplied to the ejector (7) is stored in the processing solution tank (4). Inflow,
It overflows and returns to the chemical tank (2). Therefore, the liquid level (L1) of the chemical liquid tank (2) is lower than the liquid level (L2) of the processing liquid tank (4), and the liquid level (L1) is equal to the pass line (P) of the surface treatment pipe (5) of the ejector (7). Then, through holes (9a), (9b), (10a), and (10b) for inserting the object to be treated can be formed in the chemical liquid tank (2) and the processing liquid tank (4). Therefore, the long surface-treated object (3) can be run in a straight line. Accordingly, unnecessary tension is not applied to the surface of the long surface-treated object (3), and components of the chemical solution (1) do not enter the surface of the long surface-treated object (3).

In addition, the long object to be cleaned (3) is, as described in claim 2, in addition to the drawn wire material, a sheet material as described in claim 3, that is, zinc plating or tin. Examples include a thin plate on which plating is performed, a glass plate, a resin sheet, or a resin plate whose surface is cleaned.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 shows a first embodiment of a wire rod surface treatment apparatus (A) according to the present invention, in which a chemical solution tank (2) is a rectangular box having a bottom and a lid (11) divided into two at an upper surface opening. Installed. A horizontal beam (12) is installed in a middle shape inside the chemical solution tank (2), and a treatment liquid tank (4) is attached to the horizontal beam (12). Therefore, the processing liquid tank (4) is supported in a state of being floated in the middle of the chemical liquid tank (2). This processing liquid tank
(4) is also a bottomed rectangular box, in which an ejector (7) is housed.

The ejector (7) includes an ejector body (7b) having a flange (7a) mounted on an upper surface, an entrance member (13) fixed to an upstream through hole of the ejector body (7b), and the entrance member.
In accordance with (13), a pipe section (14) attached to the downstream side through hole of the ejector body (7b) by a flange (14a).

The downstream end (13a) of the entrance member (13) is formed in a tapered shape, and its internal shape is also formed in a tapered shape in accordance with the outer shape. In the front half on the upstream side of the entrance member (13), (13b) is formed straight.

The inner shape of the entrance portion of the pipe portion (14) is formed in a tapered shape, and the tapered downstream end portion (13a) of the entrance member (13) is inserted, and the entrance member is formed.
The downstream end (13a) of (13) and the entrance taper of the pipeline (14)
(14b) and the chemical solution ejection port (6) are formed. Here, the surface treatment pipeline (5) extends from the entrance of the entrance member (13) to the pipeline (1).
Refers to the hollow part reaching the exit of 4).
Is inserted.

The inner peripheral shape of the pipe portion (14) is a tapered portion at the entrance.
A straight portion (14c) that is straight downstream from (14b), and a central narrow portion (14e) from the straight portion (14c).
(Ie, the narrowest part of the inner diameter)
(14e) is tapered so that its diameter gradually decreases (this portion is referred to as an intermediate tapered portion (14d)). The part up to this point is formed in a tapered tapered shape whose diameter gradually increases. (This portion is the outlet reverse tapered portion (14f).)

The pressure pump (8) is installed beside the chemical tank (2), and its water absorption pipe (15) is immersed in the chemical (1) in the chemical tank (2). A pipe (16) is connected to an upper flange (7a) of the ejector (7) via an opening / closing valve (17).

The ejector (7) has a pipe (14) mounted on a support member (18) installed in a middle stage in the processing liquid tank (4).
9), and through holes (9a), (9b), (10a), (10a), through which the material to be treated is inserted into the chemical liquid tank (2) and the processing liquid tank (4).
b) coincides with the pipe section (14). (20
a) and (20b) are guide members attached to both side walls of the chemical solution tank (2), each of which has a guide body projecting from a flange. Here, since abrasion resistance is required, ceramics will be used. The tapered through holes formed in the guide members (20a) and (20b) are through holes (9a) and (9b), through which the long object to be treated (3) runs on the pass line (P). Will be.

In this embodiment, three sets of the ejectors (7) are installed in parallel, but it is needless to say that the number of the ejectors (7) is not limited to one or two, and may be four or more. Further, the surface treatment apparatus (A) according to the present invention can be used not only for pickling but also for various uses such as washing with water, and applying a solvent or a lubricant. In addition, the ejector (7) and the tank (2) (4) and other materials are not particularly limited, but when using a corrosive solution such as an acid for the chemical solution (1), FRP and other materials such as stainless steel, enamel, glass A material with excellent chemical resistance such as Teflon or Teflon is used.

The chemical solution (1) used is appropriately selected depending on the type of surface treatment. In the galvanizing step (= galvanizing treatment), for example, when used for pickling, diluted hydrochloric acid or diluted hydrochloric acid is used. A sulfuric acid solution is used, and in the case of washing with water, water will be used. Further, in the case of a bonderite treatment, in a wire drawing step using a flux solvent for forming a phosphoric acid coating film or other dies, metal soap, lime or the like is used depending on the application.

If the long surface-treated object (3) is a wire, the pass line (P) is linear.
The through holes (9a), (9b), (10a), and (10b) may be small holes through which the wire is inserted, and the ejector (7) also has a pipe shape. On the other hand, when the long surface-treated object (3) is a sheet-like material, the pass line (P) becomes flat, so that the through hole (9) is formed.
a), (9b), (10a), and (10b) have a slit shape through which the sheet material is inserted, and the ejector (7) also has a flat plate shape. FIGS. 1 to 4 are drawings relating to the surface treatment device (A) for wires, and FIGS. 5 to 8 are drawings relating to the sheet-like member surface treatment device (A).

Ejector of sheet-like member surface treatment device (A)
In the example of this embodiment, three flanges (7a) are set on one ejector body (7b) in (7). Flange (7a)
An appropriate number of objects are set according to the width of the ejector (7). Also, as can be seen from FIG. 8, the sheet-like ejector (7) is slightly different from the linear one, and the entrance member (13) is housed in the ejector body (7b), The taper portion (14b) of the pipe portion (14) and the downstream end portion (13a) of the inlet member (13) constitute a chemical liquid ejection port (6). Further, a portion following the chemical liquid ejection port (6) is a tapered intermediate tapered portion (14g). (14h) is a throttle portion, and (14i) is an outlet reverse taper portion.

Next, the operation of the apparatus of the present invention will be described by taking as an example a case where the apparatus is used for pickling. As the chemical solution (1), for example, a dilute hydrochloric acid solution is used. The chemical solution (1) is absorbed by a pressure pump (8), and is pumped to an ejector (7) via a water pumping pipe (16). The pumped chemical (1) is ejected obliquely and at a high pressure forward from the ejector (6) of the ejector (7) .As can be seen from the figure, the ejector (6) is inclined forward. Is set toさ れ It is jetted into the pipeline (14) and accelerates the flow velocity at the jetting part.

Since the ejector (7) is immersed in the chemical liquid (1) in the processing liquid tank (4), the chemical liquid (1) in the processing liquid tank (4) is pulled by the flow of the ejection part. And is sucked into the pipe section (14). In the pipe section (14), the inner surface up to the constricted section (14e) is a straight section (14c) and a tapered tapered section (14d). object
(3) Long surface treatment by contacting the surface and oxidizing power
In addition to the chemical detergency of (3) for removing adhering substances and scale on the surface, the physical action due to the impact of the water flow is added, and the surface cleaning is completed in a short time.

The chemical liquid (1) supplied to the ejector (7) flows out into the processing liquid tank (4), most of which flows through the aberflow into the chemical liquid tank (2), and a part of the remaining liquid flows. It flows into the chemical solution tank (2) through the through holes (10a) (10b). As described above, the chemical liquid (1) is constantly pumped into the processing liquid tank (4) by the pressure pump (8), so that the liquid level in the processing liquid tank (4) is changed from the liquid level (L1) of the chemical liquid tank (1). The plane (L2) is higher. As a result, the chemical solution tank (2) and the processing solution tank coincide with the path line (P) of the surface treatment pipeline (5) of the ejector (7).
(4) Even if the through-holes (9a) (9b) (10a) (10b) for penetrating the object to be treated are drilled, the chemical solution (1) in the chemical solution tank (2) has the through-holes (9a) ( 9
The long object to be treated (3) can be run in a straight line to perform a line or surface treatment without flowing out through b). In addition, the ejection pressure of the chemical solution (1) ejected from the ejector (7) is controlled by an open / close valve (17) installed above the flange (7a).
Can be adjusted.

[0027]

According to the surface treatment apparatus of the present invention, through holes are formed in the chemical solution tank and the treatment liquid tank for inserting the objects to be treated, corresponding to the pass line (P) of the surface treatment pipeline of the ejector. And the through hole of the chemical solution tank is formed above the liquid level of the chemical solution tank, so that the long object to be treated can be run in a straight line, and as a result, the long object surface There is no intrusion of processing solution components or ions of the processing solution components into the surface layer of the processed product, and there is no such thing as constituting the cause of rusting after the product is manufactured. In addition, since the surface of the long surface-treated object is treated by the ejector, the chemical ejected at a high pressure from the chemical solution ejection port while the long surface-treated object is running in the ejector is treated by the ejector. The physical impact pressure acts on the surface of the long surface to be treated by strongly colliding with the surface, and the physical processing power is added in addition to the chemical processing power of the chemical solution, and as a result, the processing power is greatly improved. Therefore, there is an advantage that the device shape can be made compact.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a first embodiment of a surface treatment apparatus according to the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a sectional view of the wire ejector used in FIG. 1;

FIG. 5 is a front sectional view of the first embodiment of the surface treatment apparatus according to the present invention;

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a right side view of FIG.

FIG. 8 is a sectional view of an ejector for a sheet material used in FIG. 5;

FIG. 9 is a front sectional view of a conventional example.

[Explanation of symbols]

 (A) Surface treatment equipment (P) Pass line (L1) Liquid level of chemical tank (L2) Liquid level of processing liquid tank (1) Chemical liquid (2) Chemical tank (3) Long coating Surface treatment material (4)… Treatment liquid tank (5)… Surface treatment pipeline (6)… Chemical liquid jet (7)… Ejector (8)… Pressure pump (9a) (9b) (10a) (10b)… Communication Hole

Claims (3)

(57) [Claims] A chemical solution tank for storing a chemical solution,
A treatment liquid tank disposed in the chemical liquid tank; and a surface treatment conduit immersed in the chemical liquid in the treatment liquid tank, and opened to a surface treatment conduit through which the long object to be treated is subjected to surface treatment while passing. An ejector having a chemical solution ejection port for ejecting a chemical solution at a high pressure, a pressure pump for pumping the chemical solution from the chemical solution tank to the ejector, and a drilling machine for the chemical solution tank and the processing solution tank in line with the path line of the surface treatment path of the ejector. A surface treatment apparatus comprising: a through hole provided for inserting a surface-treated object; and a through hole of the chemical solution tank is formed above a liquid level of the chemical solution tank. 2. The surface treatment apparatus according to claim 1, wherein the long object to be cleaned is a wire. 3. The surface treatment apparatus according to claim 1, wherein the long object to be cleaned is a sheet material.