KR102022117B1 - Apparatus for pickling and coating - Google Patents

Abstract

According to the present invention, provided is a pickling and a film treatment device comprising a pickling part which can store an acidic solution such that an oxide film is removed by immersing an object to be treated with the oxide film formed on the surface; a film forming part capable of storing an acidic solution removing compound to remove the acidic solution formed around the object to be treated by being immersed in the acidic solution; a housing extending upward from a side surface of a plurality of aligned container tanks so as to seal around a plurality of solution tanks; and a suction part for discharging the gas generated inside the housing. The pickling part and the film forming part each include a plurality of solution tanks, and the plurality of aligned solution tanks of the pickling part and the plurality of solution tanks of the film forming part are formed to be aligned in parallel so as to be spaced apart from each other. Therefore, the present invention is capable of preventing the product from being oxidized.

Description

Pickling and coating equipment {APPARATUS FOR PICKLING AND COATING}

The present invention relates to a pickling and coating treatment device. More specifically, the acid pickling process and the film treatment process are spatially separated to prevent the acid gas generated in the pickling process from moving to the space where the film treatment process is performed, thereby preventing oxidation of the product by the acid gas. It is a technique regarding a pickling and film processing apparatus.

Cold Heading Quality Wire refers to a wire rod that is processed to facilitate cold forging, which is a post-process for hot rolled wire, and is used for automobile parts, mechanical parts, electrical and electronic parts, and construction. Used for applications such as bolts.

Therefore, Cold Heading Quality Wire is a product that requires strict quality to meet cold forging conditions. To manufacture cold heading quality wires, hot rolled wires require processing such as pickling coating processes.

 The pickling process involves chemically exfoliating the oxide film by depositing a bundle of wire coils wound in a pickling solution tank filled with a strong acidic aqueous solution such as nitric acid or hydrochloric acid, and then keeping the oxide film chemically separated from the oxide film. It is a process of washing the oxide film which peeled and deposited in the water washing tank with water, and then drying.

On the other hand, in the forging process, the metal mold, which is a processing tool, and the metal material, which is a working tool, come into contact with extreme pressure during plastic working of metal. At this time, the metal material deformed and processed by the mold generates heat due to friction with the mold, so that the mold and the material are sintered, so that the processing is not easy, and cracks may occur, resulting in product defects. Thus, lubrication is required at the contact between the mold and the material in order for the material to be processed without defects in the mold.

Therefore, the coating process proceeds for the purpose of such lubrication, and the hot rolled wire (Wire Rod) is subjected to a film forming step of several stages for lubrication during cold forging after the pickling process.

However, according to the related art, the pickling process and the coating process as described above are carried out through a solution tank in which wire rods are arranged on the same line, so that the pickling process and the coating process are performed in a state where the space is not separated. do. As a result, in the process of repeatedly depositing the wire rod in the acidic solution, harmful gases such as hydrochloric acid move into the air, and after the pickling process is completed, move to the front and rear of the film treatment process step so that even after the pickling process, the wire rod ( There is a problem that the product is oxidized because acid gas remains around the wire rod).

Therefore, there is a need for a method of preventing the degradation of product quality due to the acidic gas by minimizing the effect of the acidic gas before and after the coating process.

Korea Patent Registration No. 10-0775297

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides an acid pickling and coating treatment apparatus capable of preventing oxidation of a product due to residual acid gas generated in a pickling process of a wire rod before and after the coating treatment. For the purpose of

An pickling and coating treatment apparatus according to an embodiment of the present invention is a pickling portion capable of storing an acid solution so that an oxide film is removed by immersing a workpiece having an oxide film formed on a surface thereof, and being immersed in the acid solution. The film forming unit capable of storing the coating treatment compound to remove the acid solution formed around the water or to form a film, and the pickling unit and the film forming unit so that gas generated in the pickling unit and the film forming unit does not flow out. Each side of the portion and extending from each side and the housing is formed to be sealed around the upper portion and the suction portion for inducing and discharging the gas generated in the housing in a predetermined direction, wherein the pickling portion and the film forming portion, respectively A solution tank including the solution tank of the pickling part and the film type A plurality of solution tank parts may be aligned parallel to each other spaced apart.

The pickling portion or the film forming portion, the solution to increase the reaction rate by increasing the frequency of contact between the acid solution or the coating treatment compound and the object (M) stored in each of the solution tank; It may further include a vibrating body installed inside the tank.

And a trolley rail installed on side surfaces of the plurality of solution tanks and a trolley coupled to the rail and traveling on the pickling unit and the film forming unit, wherein the trolley is a trolley frame on which moving wheels are mounted. And a moving frame fixed to one side and a moving frame coupled to the other side of the bogie frame and moving in one direction so that an interval with the fixed frame can be changed.

The bogie may comprise a pair of rollers rotatably coupled in parallel to the bogie frame.

 Includes a transporting device in the lower portion to run on the pickling portion and the film forming portion, the transporting device is capable of raising and lowering the driving wheel and the feature that can run in combination with the rail formed on the side of the solution tank It may include a lifting device.

The housing may include a gas induction device, and the suction part may be formed on the side of the housing at an upper part of the solution tank where harmful gas is generated in the solution tank, and the gas induction device may be formed opposite the suction part.

 The housing may include an air curtain injector for forming an air curtain in at least one of the transport paths.

The housing may include a sensor installed at least one of the inner surface to detect a state of the transport device.

According to the present invention, an acid gas generated in a pickling process of a wire rod remains before and after the coating treatment step, so that a pickling and coating treatment apparatus capable of preventing the product from being oxidized can be provided.

1 is a plan view of a pickling and coating treatment apparatus according to an embodiment of the present invention
2 is a front view of a pickling and coating apparatus according to an embodiment of the present invention.
3 is a left side view of the pickling and coating apparatus according to an embodiment of the present invention.
4A is a plan view of a bogie in accordance with one embodiment of the present invention;
4B is a front view of the bogie in accordance with one embodiment of the present invention;
4C is a left side view of the bogie in accordance with one embodiment of the present invention;
5a and 5b is a state diagram used in the balance according to an embodiment of the present invention
Figure 6a is a plan view of a transport apparatus according to an embodiment of the present invention
Figure 6b is a front view of the transport apparatus according to an embodiment of the present invention
Figure 6c is a left side view of the transport apparatus according to an embodiment of the present invention

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms are used only for the purpose of distinguishing one component from another. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, various embodiments of the accuracy test apparatus according to the present invention will be described in detail with reference to the accompanying drawings, in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and duplicated thereto The description will be omitted.

Hot rolled steel or wire rods, which are raw materials, are pickled, coated, drawn, heat treated, plated, plated, etc. Products such as cold heading quality wire can be manufactured.

Wire rope is used as a cable material for lifting heavy items on devices such as ships, automobiles, elevators, etc., and cold heading quality wire is used for automobile parts, mechanical parts, electrical and electronic parts, and construction. This product is used as a bolt.

Hereinafter, a pickling and film treatment apparatus capable of performing a pickling coating process on a raw hot rolled steel sheet or a wire rod to manufacture a wire rope and a cold heading quality wire. This will be described.

1 is a plan view of a pickling and coating apparatus 10000 according to an embodiment of the present invention, Figure 2 is a front view of a pickling and coating processing apparatus 10000 according to an embodiment of the present invention, Figure 3 It is a left side view of the pickling-film processing apparatus 10000 which concerns on one Embodiment of this invention.

1 to 3, the pickling and coating apparatus 10000 according to an embodiment of the present invention includes a pickling unit 1000, a film forming unit 2000, a housing 3000, a suction unit 4000, and The dust collecting device 5000 may be included, and the pickling part 1000 and the film forming part 2000 may be formed in parallel to be spaced apart from each other in order to prevent oxidation of the product by acidic gas in the coating process.

When the pickling unit 1000 and the film forming unit 2000 are formed in parallel, the respective processes may be spatially separated to prevent the acid gas generated in the pickling process from moving to the film forming process. In the prior art, an acid treatment process, a washing process, a neutralization process, or a film forming process are performed in the same space with one direction aligned so that acid gas exists in the film treatment step to oxidize the product after the acid treatment step is performed. There was this.

However, in the pickling and coating processing apparatus 1000 according to the embodiment of the present invention, the pickling unit 1000 and the film forming unit 2000 are aligned in parallel, and a partition wall is formed on each side surface of the pickling unit 1000. By blocking the acid gas generated in the movement to the film forming unit 2000, it is possible to prevent the acid gas remaining in the workpiece (M) to oxidize the product during the film process proceeds in the film forming unit (2000). .

The pickling and coating apparatus 10000 according to an embodiment of the present invention performs a pickling (acid pick) process in the pickling unit 1000 and a film forming process in the film forming unit 2000.

Pickling is a process of dissolving and removing oxides, rust, etc., which are formed on the surface after heat-treating hot rolled steel sheets or wire rods as raw materials, and coating is cold. In the forging process, in order to improve lubricity, the film is formed on the surface of the wire rod from which the oxide film is removed.

Pickling unit 1000 is composed of a plurality of solution tank (1000a, 1000b, ... 1000i) to perform the pickling (acid pick) process, a plurality of solution tank (1000a, 1000b, ... 1000i) Acid solutions such as nitric acid, sulfuric acid, and hydrochloric acid can be stored inside. Repeated steps of locking the workpiece M in each of the solution tanks 1000a, 1000b, and 1000i in which the acid solution is stored, and the oxide film formed around the workpiece M Can be removed. The pickling unit 1000 may perform a cleaning step for removing an acid solution remaining around the object M, including a solution tank in which water is stored.

The film forming portion 2000 is composed of a plurality of solution tanks 2000a, 2000b, ... 2000i to ensure lubricity during cold forging, and is formed by coating the plurality of solution tanks 2000a, 2000b, ... 2000i. The solution in which the drug is dissolved can be stored. The object to be treated M is subjected to several deposition steps in a plurality of solution tanks 2000a, 2000b, ... 2000i in which various coating chemicals are dissolved, after the step of removing an acid solution. A film can be formed in the.

On the other hand, pickling and film treatment apparatus 10000 according to an embodiment of the present invention, the pickling portion (100) in the pickling portion 1000 to transport the treated object (M) to the film forming portion (2000) Can be used.

In the trolley 100, the pickling part 1000 and the film forming part 2000 are formed in parallel, and the pickling part 1000 is directed to the film forming part 2000. You need to change the path to proceed.

Therefore, the trolley 100 proceeds in a c-shaped path in order to change direction to the film forming unit 2000.

In order to block the acid gas generated in the pickling unit 1000 from moving in the path 100 of the truck 100 to the film forming unit 2000, the air is collected between the pickling unit 1000 and the film forming unit 2000. AIR CURTAIN can be installed. The portion through which the trolley 100 passes is an air curtain, which allows the movement of the trolley 100 while allowing air to pass through the connection passage between the pickling portion 1000 and the film forming portion 2000. Ingress can prevent the acid gas from moving.

On the other hand, except for the region through which the trolley 100 passes, the partition wall is formed to minimize the mixing of gas.

In order for the trolley 100 to drive the pickling unit 1000 and the film forming unit 2000, the trolley rails are disposed on the side surfaces of the plurality of solution tanks 1000a, 1000b, 1000i, 2000a, 2000b, 2000i. (Not shown) is installed, the balance 100 is coupled to the balance rail can transport the workpiece (M) while traveling the balance rail path.

The cart 100 transports the to-be-processed object M transported by the transport apparatus 200 to be described later to the film-forming unit 2000, or to facilitate the transport of the to-be-processed object M having completed the process procedure. It may include a configuration that performs a variety of functions.

Hereinafter, a configuration for the truck 100 to facilitate the transport of the object M will be described in more detail with reference to the accompanying drawings.

4A is a plan view of a bogie according to an embodiment of the present invention, FIG. 4B is a front view of a bogie according to an embodiment of the present invention, and FIG. 4C is a left side view of the bogie 100 according to an embodiment of the present invention. to be. 5A and 5B are diagrams illustrating a state of use of the cart 100 according to an embodiment of the present invention.

4A to 4D, the bogie 100 according to an embodiment of the present invention includes a bogie frame on which the moving wheels 107 are mounted, a fixed frame 101b fixedly coupled to one side of the bogie frame, and a bogie frame. By moving to one side in combination with the other side, it may include a moving frame 101a that can be changed from the fixed frame.

The workpiece M transported to the pickling and coating processing apparatus 10000 by the truck 100 is narrow in the shape of a coil in consideration of the convenience of transportation in order to facilitate transportation before being coupled to the transportation apparatus 200. It is bundled and transported in a wound state.

However, the to-be-processed object (M) and the transport apparatus 200 to be described later in the state is widened in order to increase the contact area with the solution so that both the surface and the acid solution or the solution containing the coating agent can be contacted Will be combined.

The bogie 100 moves the workpiece M placed between the fixed frame 101b and the moving frame 101a in a direction in which the moving frame 101a moves from one side of the workpiece M toward the fixed frame 101b. You can narrow or widen the gap as needed by using the gap change that moves in the opposite direction. For example, during transportation, the moving frame 101a moves in the direction of the fixed frame 101b to narrow the winding interval of the object M to facilitate transportation, and to be coupled to the lifting means before being deposited in an acidic solution. In the step, the moving frame 101a may be moved away from the fixed frame 101b to widen the winding interval of the object M.

Therefore, the interval between the workpieces M is adjusted by the movement of the moving frame 101a, thereby eliminating the inconvenience that the operator must manually carry out widening or narrowing the workpieces M by hand.

As shown in FIGS. 5A and 5B, the trolley 100 has a moving wheel 107 mounted at the lower side of the trolley frame for the treatment object M, so that the solution tanks 1000a, 1000b, 1000i, 2000a, 2000b are installed. It can run on the trolley rail provided in the side of 2000i).

In addition, the trolley 100 is provided with guide rollers 109 on the side, and the trolley rail running around the solution tanks 1000a, 1000b, ..., 1000i, 2000a, 2000b, ... 2000i arranged in a line. You can guide your travel route so you don't leave it.

Meanwhile, the to-be-processed object M is mostly made of a wire rod, so that the pickling and coating treatment process is performed in the released state, and the wire rod in the pickling process can be easily moved in the coating process. The wire rod spacing may be narrowed again as shown in FIG. A to facilitate the movement in the compressed state.

In addition, the wire rod compressed after the pickling process is immersed in the tank 1000i for washing with water, and after the transfer, the gap between the wire rods is widened to perform the coating process.

 The trolley 100 which is put into the pickling film processing apparatus may widen the gap between the wire rods while the pair of rollers 103 installed in parallel with the trolley frame rotate, and the trolley 100 discharged from the pickling film processing apparatus. In order to facilitate the transport of the wire rod, the moving frame 101a may move to the fixed frame 101b to compress the wire rod.

6A is a plan view of a transport apparatus 200 according to an embodiment of the present invention, FIG. 6B is a front view of a transport apparatus 200 according to an embodiment of the present invention, and FIG. 6C. Is a left side view of the transport apparatus 200 according to an embodiment of the present invention.

6A to 6C, the transportation device 200 according to an embodiment of the present invention includes a driving wheel 204 and a feature that can travel to travel on the pickling unit 1000 and the film forming unit 2000. It may include a lifting device 212 that can raise and lower the water.

The saddle 220 forms a lower portion of the transportation device 200 and the driving wheels 204 are coupled to the front and the rear, respectively. The lifting means 212 includes a hydraulic power unit 210, a guide roller 208, a hydraulic cylinder 212 and a chain 214. The hydraulic power unit 210 generates pressure in the hydraulic cylinder 212 to supply power for operating the hydraulic cylinder 212.

As shown in the left side view of FIG. 3, the guide roller 208 may prevent the C hook hook from being shaken when the C hook hook is raised or lowered.

The hydraulic cylinder 212 is formed on both pillars of the frame 206, and applies an external force to allow the C hook hook to move up and down. In the embodiment of the present invention, the hydraulic cylinder is used in a manner of raising and lowering the C hook hook, but is not limited thereto. C hook hook or other lifting means for raising and lowering the material to be treated (M) is also included in the technical idea of the present invention.

One end of the chain 214 is fixed to the outside of the frame 206, and the other end is connected to the C hook hanger through the pulley-shaped upper portion of the hydraulic cylinder 212. One end and the other end of the chain 214 is pushed by the pulley on the hydraulic cylinder 212. By doing so, the C hook hook can be raised by twice the height at which the pulley hydraulic cylinder 212 rises.

The C hook hook was formed to protrude inward from the top of the pillar of the frame 206 so that the C hook hook was engaged by being engaged. The driving means includes a driving reducer 202 and a driving wheel 204 and serves to allow the transportation device 200 to move and stop.

The driving reducer 202 rotates the gear engaged with the gear of the driving wheel 204 in a motor manner so that the driving wheel 204 can rotate and stop. The travel reducer 202 is installed at both front sides of the saddle 212, respectively. The travel reducer 202 can move only the front wheel 204.

At this time, the driving means of the transportation device 200 according to an embodiment of the present invention may be automatically controlled to reduce or accelerate the traveling speed by the automatic control device.

As described above, the pickling and coating apparatus 10000 according to an embodiment of the present invention separates the pickling unit 1000 and the film forming unit 2000 and moves the acid gas into the air after the pickling process. This may solve the problem of damaging the work equipment or deteriorating the product, the cart 100 can improve the convenience of work to facilitate the adjustment of the winding interval of the wire rod (Wire rod).

In addition, the transport device 200 is provided with a lifting means is provided with a traveling wheel to run the rail installed on the side of the solution tank, it is easy to perform the various steps of pickling process and film coating process. Furthermore, even if each process is controlled automatically, even if the process proceeds in the enclosed space by the housing, it is possible to control the equipment state without the operator entering the inside of the housing to protect the operator from harmful gases.

In addition, by installing the housing to be sealed and the suction unit induces harmful gas to the dust collector, it is possible to prevent the leakage of harmful gas to the outside of the housing to prevent leakage to the outside.

The pickling part 1000 or the film forming part 2000 is the acidic solution or the coating compound and the treated material stored in the solution tanks 1000a, 1000b, 1000i, 2000a, 2000b, 2000i, respectively. It may further include a vibrating body (not shown) installed outside the solution tank to increase the reaction rate by increasing the frequency of contact with the surface (M).

The structure of the vibrating body is installed at the bottom of the outer side of the solution tank to vibrate in direct contact with the acid to prevent the device from being damaged by the acidic solution to increase the durability of the device. The vibrating body (not shown) may cause a solution stored in a solution tank such as an acid solution to vibrate, thereby allowing the solution to contact the object M in a larger area, and shortening the process time by making the contact faster.

Meanwhile, the pickling and coating apparatus according to an embodiment of the present invention may include a housing 3000 so that gas generated in the pickling unit 1000 or the film forming unit 2000 does not flow out. The housing 3000 may be formed to extend from each side and each side to be sealed around the upper portion so that acid gas generated in the pickling unit 1000 does not flow into the film forming unit 2000.

The housing 3000 has the pickling part 1000 and the film forming part 2000 formed side by side and formed on both adjacent sides thereof, so that the acidic gas generated in the pickling part 1000 moves to the side of the adjacent film forming part 2000. It will block you from moving. Similarly, the side surface of the film forming unit 2000 is also blocked by the housing 3000 to prevent the gas and the like generated in the film forming process from moving to the pickling unit 1000 so that the processes can be performed without being influenced by other processes. .

The pickling and coating apparatus 10000 according to one embodiment of the present invention may include a suction unit 4000 capable of guiding and treating the harmful gas generated in the housing 3000 to the dust collector 5000. , The suction unit 4000 guides the harmful gas inside the housing 3000 generated during the pickling and coating process to the dust collecting device 5000, and the dust collecting device 5000 draws the harmful gas induced by the suction unit 4000. By treating, the damage caused by spilling harmful gas to the outside can be minimized.

Furthermore, the housing 3000 may include an air curtain injector for forming an air curtain in at least one of the movement paths of the transportation device 200, and may be installed in at least one of the inner surfaces of the housing 3000. And may further include a sensor for detecting the state of the transport device.

Air curtain injectors and sensors can additionally block the outflow of harmful gases, making the working environment safer.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

100: Balance
200: transportation device
1000: pickled
2000: film forming part
10000: Pickling and coating treatment device 1000: Pickling part

Claims (11)

A pickling portion capable of storing an acidic solution so that the oxide film is removed by immersing a workpiece having an oxide film formed on a surface thereof;
A film forming part capable of storing the coating compound in order to remove the acid solution or form a film by immersing the acid solution;
A housing extending from each side and each side of the pickling portion and the film forming portion so as to prevent the gas generated in the pickling portion and the film forming portion from flowing out; And
And an intake unit for inducing and discharging the gas generated in the housing in a predetermined direction.
The pickling portion and the film forming portion,
A plurality of solution tanks each aligned, and the plurality of solution tanks of the pickling unit and the film forming unit may be aligned in parallel to be spaced apart from each other, and the workpiece may move to one side between the pickling unit and the film forming unit. Includes a connecting passage,
A bogie rail installed on side surfaces of the plurality of solution tanks; And
And a bogie coupled to the bogie rail and traveling on the pickling portion and the film forming portion.
The balance is,
A bogie frame on which the moving wheels are mounted;
A fixed frame fixedly coupled to one side of the bogie frame; And
And a moving frame in which a distance from the fixed frame can be changed by engaging with the other side of the bogie frame and moving in one direction. The method of claim 1,
A pickling and coating apparatus, wherein partition walls are formed on both sides of a connection passage between the pickling portion and the film forming portion so as to block the gas movement. The method of claim 2,
Pickling and film processing apparatus comprising ;; air curtain spraying device is provided on one side of the pickling portion and the film forming portion so that the air curtain is formed on the lower side of the partition formed on both sides of the connection passage of the pickling portion and the film forming portion . The method of claim 1,
The pickling portion or the film forming portion,
A vibrating body provided outside the solution tank to increase the reaction rate by increasing the frequency of contact between the acidic solution or the coating compound and the surface of the object to be stored in each of the plurality of solution tanks; Pickling-film-processing apparatus containing. delete The method of claim 4, wherein
The balance is,
A pickling and coating apparatus, comprising: a pair of rollers rotatably coupled in parallel to the bogie frame. The method of claim 1,
Includes; a transport device at the bottom to run on the pickling portion and the film forming portion;
The transport device,
A driving wheel capable of driving in combination with the rail formed on the side of the solution tank; And
And a lifting device capable of lifting and lowering the object to be treated.
The method of claim 7, wherein
The transport device,
Pickling and coating processing device comprising a; a speed reducer capable of controlling the speed of the driving wheel. The method of claim 7, wherein
The housing includes a gas guide device,
The suction part is formed on the side of the housing in the upper portion of the solution tank in which harmful gas is generated in the solution tank,
The gas induction and coating apparatus, wherein the gas induction apparatus is formed opposite the suction unit. The method of claim 7, wherein
And said housing comprises an air curtain injector for forming an air curtain in at least one of the movement paths of said transport device. The method of claim 7, wherein
The housing is pickling and coating device that is installed at least on any one of the inner surface includes a sensor for detecting the state of the transport device.

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