KR101735006B1 - Device and method for cleaning surface of metal wire - Google Patents

Device and method for cleaning surface of metal wire Download PDF

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Publication number
KR101735006B1
KR101735006B1 KR1020150108367A KR20150108367A KR101735006B1 KR 101735006 B1 KR101735006 B1 KR 101735006B1 KR 1020150108367 A KR1020150108367 A KR 1020150108367A KR 20150108367 A KR20150108367 A KR 20150108367A KR 101735006 B1 KR101735006 B1 KR 101735006B1
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South Korea
Prior art keywords
steel wire
laser
supporting
cleaning
wire
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KR1020150108367A
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Korean (ko)
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KR20170014652A (en
Inventor
박순홍
장진영
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재단법인 포항산업과학연구원
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Priority to KR1020150108367A priority Critical patent/KR101735006B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • B21C43/04—Devices for de-scaling wire or like flexible work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
    • B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser

Abstract

A steel wire cleaning apparatus for removing foreign matter including a metal or a metal reaction product formed on a surface of a steel wire so as to more effectively remove foreign matter adhering to the surface of the steel wire using a laser, There is provided a device for cleaning a surface of a steel wire, comprising a laser part arranged to irradiate a surface of a steel wire with a laser, and a steel wire supporting part for supporting a steel wire against the laser part.

Figure R1020150108367

Description

Technical Field [0001] The present invention relates to a device for cleaning a surface of a steel wire,

The present invention relates to a wire surface cleaning apparatus and a cleaning method for removing foreign matter from the surface of a metal wire using a laser.

For example, a wire rod used for various purposes depending on its diameter is manufactured by drawing and heat-treating a cast metal wire. The metal-based steel wire is subjected to a heat treatment drawing process from a large-diameter steel wire and finally processed into wire of various diameters.

As the metal-based steel wire is heat-treated and drawn and formed, foreign substances such as high-temperature oxide and low-temperature oxide are formed on the surface of the steel wire. The foreign matter on the surface of the steel wire moves into the grain boundaries or the mouth of the steel wire and affects the physical properties of the wire. Therefore, it is necessary to remove the foreign substances from the surface of the steel wire by the heat treatment or the drawing process in the wire material processing.

The foreign substances generated by the reaction on the surface of the steel wire are oxides, nitrides, carbides and the like, and these various chemical substances are hard to be removed by strong adhesion to the surface of the steel wire.

In the conventional case, foreign matter such as an oxide film formed on the surface of the steel wire in the wire rod processing step was removed by a chemical or physical method. That is, conventionally, the surface scale is physically removed by chemically removing the foreign substances on the surface of the steel wire through chemical cleaning using a high-temperature acid or an alkaline high-temperature bath, or by bending the steel wire at a certain angle. However, in the case of the physical removal method, there is a possibility that the surface of the steel wire is damaged or a defect due to physical friction in the grain boundary or the mouth is generated. The chemical removal method is also not good for the human body due to the use of acid or alkaline chemicals and may cause environmental pollution problem.

There is provided a device for cleaning a surface of a steel wire and a cleaning method which can more effectively remove foreign matter adhering to the surface of the steel wire using a laser.

A steel wire surface cleaning apparatus and a cleaning method are provided that minimize thermal influence by a laser to prevent thermal deformation of a steel wire while more effectively removing contaminants attached to the surface of the steel wire.

The cleaning apparatus of this embodiment is a steel wire cleaning apparatus for removing foreign matter including a metal or a metal reaction product formed on the surface of a steel wire and is disposed on a moving line of a steel wire continuously moving, A laser portion, and a wire supporting portion that supports the wire and regulates its position with respect to the laser portion.

The cleaning apparatus may further include a moving unit connected to the laser unit and reciprocating the laser unit at a predetermined angle along the steel wire circumferential direction with the steel wire as a center axis to move the laser beam irradiation area of the laser unit.

The cleaning apparatus may further include a jetting unit for supplying a gas to the laser irradiation area to remove particles generated during cleaning.

The injection unit may include a spray tube disposed along the periphery of the steel wire, a spray nozzle provided along the spray tube to spray gas on the surface of the steel wire, and a gas supply unit connected to the spray tube to supply gas.

The injector may be configured to inject inert gas.

The cleaning apparatus may further include a suction unit for sucking and removing particles generated during the laser cleaning.

The suction unit may include a suction hood disposed to face the spray unit with the laser irradiation area of the steel wire therebetween, the suction hood disposed along the periphery of the steel wire, and a suction pump connected to the suction hood to apply a suction force.

At least a plurality of the laser units may be spaced apart along the outer circumferential surface of the steel wire.

A plurality of the laser units may be arranged along the axial direction of the steel wire.

The laser part may be structured to apply a pulse or a continuous wave laser to the rigid surface.

The steel wire supporting part may include a pair of supporting members spaced apart from each other on the ground and supporting the lower end of the steel wire.

The steel wire supporting part may further include a rotation roller rotatably installed on the support member and having a groove on which a steel wire is seated on a contact surface with the steel wire.

The steel wire supporting part may further include a pair of pressing members for pressing and supporting the upper end of the steel wire.

The wire supporting portion may further include a driving portion for moving the pressing member up and down.

The steel wire supporting part may further include a rotation roller rotatably installed on the upper pressing member and having a groove on which a steel wire is seated on a contact surface with the steel wire.

At least two of the rotating rollers may be arranged along the circumferential direction of the steel wire.

The cleaning method of this embodiment is a method of removing a foreign material including a metal or a metal reaction product formed on the surface of a steel wire by continuously moving the steel wire, regulating the position by supporting the steel wire, And removing the foreign matter by irradiating the laser with a laser.

The step of irradiating the laser may further include the step of reciprocating the laser irradiation region along the circumferential direction of the steel wire with the steel wire as the axis.

The cleaning method may further include a step of supplying the gas to the laser irradiation area to remove the particles when the foreign matter is removed.

The cleaning method may further include a suction step of sucking and removing the particles generated during the removal of foreign matter.

As described above, according to this embodiment, foreign matter adhering to the surface of the steel wire can be more effectively removed by applying thermal stress to the foreign matter while preventing the thermal deformation of the steel wire by irradiating the laser.

1 is a schematic view showing a configuration of a steel wire surface cleaning apparatus according to the present embodiment.
FIGS. 2 and 3 are schematic views showing a structure for supporting a steel wire of a steel wire surface cleaning apparatus according to the present embodiment.
4 is a view for explaining the laser irradiation structure of the steel wire surface cleaning apparatus according to the present embodiment.
Fig. 5 is a schematic view showing a structure of a jetting section of a steel wire surface cleaning apparatus according to the present embodiment.
6 to 8 are views showing the surface cleaning result of the steel wire according to the present embodiment.
9 and 10 are diagrams showing the results of grasping the composition of the surface area after cleaning the surface of the steel wire and the surface area before cleaning according to this embodiment.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the following description, a steel strip to be a foreign object refers to a material having a cylindrical sectional structure made of a metal such as steel, stainless steel, or aluminum titanium.

The foreign matter on the surface of the steel wire means metal reaction products such as oxides, nitrides and carbides formed on the surface in the process of drawing the steel wire into a wire rod by drawing or heat treatment, metal scale and the like.

The cleaning apparatus of this embodiment has a structure for removing foreign substances generated on the surface of a steel wire made of a metal by using a laser.

Fig. 1 shows a configuration of a steel wire surface cleaning apparatus according to the present embodiment.

1, the cleaning apparatus of this embodiment includes laser units 10 and 11 arranged on a moving line of a continuously moving steel wire W and irradiating a laser on the surface of the steel wire W, And a wire supporting portion for supporting the steel wire W such that the position thereof is restricted with respect to the laser portions 10, 11.

The cleaning unit is connected to the laser units 10 and 11 to reciprocally rotate the laser units 10 and 11 at a predetermined angle along the circumferential direction of the steel wire W with the steel wire W as a center axis, (30, 31) for moving the laser beam irradiation region of the laser beams (10, 11).

Although not shown, the steel wire W can be continuously released from the rotary roll for supplying the steel wire W, for example.

The moving speed of the steel wire W can be adjusted according to the output of the laser beam irradiated from the laser parts 10 and 11 to the surface of the steel wire W. [ That is, when the laser beam output of the laser units 10 and 11 is low, the moving speed of the steel wire W is relatively reduced so that a sufficient amount of energy can be irradiated to the surface of the steel wire W. On the contrary, when the laser beams output from the laser units 10 and 11 are high, the moving speed of the steel wire W is relatively increased so that excessive energy is not applied to the surface of the steel wire W.

In this embodiment, the laser units 10 and 11 may be configured to output a continuous wave laser. Alternatively, the laser units 10 and 11 may be configured to output pulse lasers. In the case where the laser units 10 and 11 output pulsed laser, the laser irradiated therefrom is a pulsed laser having a pulse width of nanosecond to below picoseconds, that is, a pulse width of picosecond, .

The laser units 10 and 11 may use various kinds of lasers, for example, solid lasers, liquid lasers, gas lasers, or semiconductor lasers.

As described above, in the present embodiment, the laser having the predetermined energy is irradiated from the laser portions 10 and 11 to the surface of the moving steel wire W to remove the foreign substances on the surface of the steel wire W. Foreign matter is removed from the surface of the steel wire W by the surface reaction when energy greater than the binding energy of the foreign substance attached to the surface of the steel wire W is applied through the laser beam.

The laser units 10 and 11 may include, for example, a laser oscillation source for generating a laser beam and a plurality of mirrors for transmitting the laser beam to the surface of the steel wire W . The laser units 10 and 11 may further include an attenuator for adjusting the power of the laser generated from the laser oscillation source. The laser units 10 and 11 can be variously modified according to the shape and power of the laser beam.

In the present embodiment, a plurality of the laser units 10 and 11 may be disposed at intervals along the circumferential direction of the steel wire W. [ FIG. 1 shows a structure in which two laser parts are disposed at the same position with respect to the axial direction of the steel wire W at an angle of 180 degrees along the circumferential direction. Three or more of the laser units may be disposed at a certain angle along the circumferential direction of the steel wire W. [ Each of the laser units 10 and 11 can irradiate a laser beam toward the surface of the steel wire W at the corresponding position. The number of the laser units 10 and 11 may vary depending on the size of the irradiation area of the laser beam with respect to the steel wire W. If the laser beam can be uniformly irradiated to the entire outer surface of the cylindrical steel wire W It can be set variously.

A plurality of the laser units 10 and 11 may be arranged along the axial direction of the steel wire W. [ 1 shows a structure in which two laser units are arranged at the same position with respect to the axial direction of the steel wire W as a unit and two units are arranged at intervals along the axial direction in which the steel wire W moves Respectively. The laser units 10 and 11 may be arranged in three or more units in addition to two units along the axial direction of the steel wire W. [ The distance between the laser unit 10 of the one unit and the laser unit 11 of the adjacent unit can be set variously.

Accordingly, the first laser cleaning is performed on the surface of the steel wire W in the first unit along the moving direction of the steel wire W, and then the second glass melt is again subjected to the laser cleaning, thereby improving the cleaning efficiency.

The installation positions of the laser units 10 and 11 may be the same among the units. In addition to this structure, the installation position of the lay tuning fork can be arranged between each unit at a predetermined angle along the circumferential direction of the steel wire W. [ Accordingly, the surface of the cylindrical steel wire W is irradiated more uniformly with the laser beam, so that the foreign matter on the surface of the steel wire W can be uniformly removed.

The wire support portion restricts the position of the steel wire W to prevent deflection or vibration generated when the steel wire is moved and maintains a constant focus distance of the laser portions 10 and 11 with respect to the steel wire W. [ Thus, regardless of the movement of the steel wire W, the focus of the laser beam irradiated by the laser parts 10 and 11 is accurately formed on the surface of the steel wire W, and stable and uniform cleaning is achieved.

To this end, the steel wire supporting part includes a pair of supporting members 20, 21 spaced apart from each other on the ground so as to support the lower end of the steel wire W.

As shown in FIG. 2, the support members 20 and 21 may be provided with a rotation roller 22 for minimizing friction with the moving steel wire W. As shown in FIG. The rotating roller 22 is freely rotatably mounted on the supporting members 20 and 21 and is rotated in accordance with the movement of the moving steel wire W. The rotary roller 22 has a structure in which a groove for receiving the steel wire W is formed on the contact surface with the steel wire W so as to prevent the steel wire W from being separated. Accordingly, the steel wire W is seated in the groove formed in the rotating roller 22 and can move without shaking.

Thus, the support members 20 and 21 are disposed with the laser units 10 and 11 interposed therebetween to support the steel wire W. The support members 20 and 21 suppress the swaying of the steel wire W in the right and left direction and the up and down direction and pass through the laser units 10 and 11 more stably in the moving process. Further, the position of the steel wire W is regulated on both sides of the laser beam irradiation position of the laser part 10, 11, so that the focus distance of the laser beam to the steel wire W is kept constant. Therefore, the focus of the laser beam is accurately irradiated from the laser portions 10 and 11 disposed between the support members 20 and 21 to the surface of the steel wire W, so that stable and uniform surface cleaning can be performed.

The steel wire supporting portion includes a pair of pressing members 24 and 25 for pressing and supporting the upper end of the steel wire W at an upper portion of the steel wire W and a driving portion 24 for moving the pressing members 24 and 25 up and down. (27). 1, the pressing members 24 and 25 are disposed at distances apart from the outer sides of the supporting members 20 and 21, and move downward according to the operation of the driving unit 27, ). The driving unit may be a driving cylinder which is driven by hydraulic pressure or air pressure.

Thus, the steel wire W is pressed by the pressing members 24 and 25, so that the tension applied to the steel wire W between the supporting members 20 and 21 becomes large. Therefore, the steel wire W passes through the support members 20 and 21 in a state where the tension is maintained more firmly in the course of passing through the support members 20 and 21. [ As described above, by applying the tension to the steel wire W between the supporting members 20 and 21 by pressing the steel wire W with the pressing members 24 and 25, the vibration suppressing force of the steel wire W is further enhanced, The focus distance of the laser units 10 and 11 can be kept constant.

3, the pressing member 24, 25 is provided with a rotating roller 26 having a groove on which the steel wire W is seated on the contact surface with the steel wire W, similar to the supporting members 20, 21 And can be rotatably installed. The rotating roller 26 is freely rotatably mounted on the pressing members 24 and 25 and is rotated in accordance with the movement of the moving steel wire W, thereby minimizing the friction with the steel wire W. The steel wire W is supported in a groove formed in the rotating roller 26.

3, the rotary roller 22 provided on the support members 20 and 21 or the rotary roller 26 provided on the pressing members 24 and 25 are arranged in the circumferential direction of the steel wire W So as to support the steel wire W. In the case of this structure, for example, even though the steel wire W having a relatively large diameter as compared with the rotating roller 22, the two rotating rollers arranged at an angle stably support the steel wire W from both sides, Or the upward / downward movement can be stably regulated.

Fig. 4 shows the structure of the moving parts 30 and 31 of the cleaning device according to the present embodiment.

4, the moving units 30 and 31 have a structure in which the laser units 10 and 11 are reciprocally rotated at a predetermined angle along the circumferential direction of the steel wire W with the steel wire W as a central axis have. The moving units 30 and 31 rotate the laser units 10 and 11 around the steel wire W as a center axis so that the focus distance of the laser beam to the surface of the steel wire W is kept constant.

The laser portions 10 and 11 irradiate a laser beam only in a certain region of the surface of the steel wire W and the steel wire W has a cylindrical sectional structure so that the focus of the laser beam is not uniformly irradiated onto the entire round surface. The laser beams 10 and 11 are rotated about the steel wire W by the moving units 30 and 31 so that the laser beam focus positions of the laser units 10 and 11 can be moved. Therefore, it is possible to uniformly irradiate the entire surface of the round wire W with the laser beam.

The moving units 30 and 31 may be connected to a plurality of laser units 10 and 11 provided in one unit to rotate the laser units 10 and 11 in the same manner. The laser units 10 and 11 rotate reciprocally by the moving units 30 and 31, respectively. The moving units 30 and 31 may be installed individually for each unit or may be installed in common for each unit.

The moving part may include a guide rail which is installed in an arc shape around a steel wire as an axis, for guiding the laser part, and a coupling structure of a driving cylinder for moving the laser part along the guide rail. The moving unit is applicable to all of the structures that reciprocate the laser unit with the steel wire as the axis.

In this embodiment, the reciprocating rotation angle of the laser units 10, 11 by the moving units 30, 31 can be variously set according to the focus area of the laser beam with respect to the surface of the steel wire W, for example.

The reciprocating rotational speed of the laser units 10 and 11 by the moving units 30 and 31 may also be set variously according to the over lapping area of the laser beam and the moving speed of the steel wire W, It is possible. Therefore, even if the steel wire W moves in the process of rotating the laser units 10 and 11, the focus of the laser beam can be overlapped to irradiate the entire outer surface of the steel wire W without losing the laser beam to perform cleaning .

The cleaning device has a structure capable of further increasing the removal efficiency of foreign matter from the surface of the steel wire during the laser cleaning process.

To this end, the cleaning apparatus of the present embodiment may further include a jetting section 40 for jetting gas into the laser irradiation area to remove foreign matter such as particles or fumes generated during laser cleaning.

1 and 5, the jetting unit 40 includes a jetting tube 41 disposed along the periphery of the steel wire W, a plurality of jetting tubes 41 disposed along the jetting tube 41, And a gas supply part 43 connected to the injection pipe 41 by a supply line 44 to supply the gas. The jetting section 40 has a sufficient structure to jet a gas to the laser irradiation area on the surface of the steel wire W. The jetting section 40 can be variously modified in addition to the above structure.

The injection pipe 41 may be formed in a ring shape so as to be disposed at the outer peripheral portion of the steel wire W having a cylindrical cross-sectional structure. The ring-shaped spray tubes 41 may be arranged so as to surround the entire outer circumferential portion of the steel wire W, separated from each other by a separate driving unit,

A plurality of spray nozzles 42 are arranged along the spray tube 41. Each of the injection nozzles 42 is disposed so as to face the outer peripheral surface of the steel wire W and injects a high pressure gas to the laser irradiation area of the steel wire W. [ The injection nozzle 42 is uniformly arranged along the outer circumferential surface of the steel wire W and can uniformly inject gas to the entire circumferential surface of the steel wire W. [

Foreign particles such as particles removed from the surface of the steel wire W are removed from the surface of the steel wire W by the gas injected from the injecting unit 40. Therefore, the foreign matter removal efficiency on the surface of the steel wire W can be further increased.

The gas injected through the jetting section 40 may be various gases including air. In the present embodiment, the jetting unit 40 may be configured to inject an inert gas such as argon into the gas sprayed on the surface of the steel wire W. [ It is possible to prevent adhesion or generation of secondary metal and metal products to the surface of the steel wire W by injecting an inert gas such as argon into the laser irradiation area by the jetting section 40. [

The cleaning apparatus may further include a suction unit 50 for sucking and removing foreign substances such as particles, fumes, and the like generated during the laser cleaning.

The suction unit 50 includes a suction hood 51 disposed opposite to the spray unit 40 with the laser irradiation area of the steel wire W interposed therebetween and disposed along the periphery of the steel wire W, And a suction pump (52) connected to the suction pipe (51) via a suction line (53) to apply a suction force.

The suction hood 51 is disposed opposite to the spray tube 41 of the spray section 40 with reference to the laser irradiation area with respect to the steel wire W. [ That is, the spray tube 41 and the suction hood 51 are arranged to face each other with the laser irradiation area therebetween. Foreign matter such as fumes or particles scattered in the laser irradiation area is blown along the gas spray direction by the gas injected from the injection nozzle 42 of the spray tube 41 and sucked into the suction hood 51 easily .

The suction hood 51 may be formed in a ring shape so that the steel wire W can be disposed on the outer periphery of the steel wire W having a cylindrical cross-sectional structure. Although not shown, the ring-shaped suction hood 51 may be divided into two parts, moved by separate driving parts, and separated or joined together so as to surround the entire periphery of the steel wire W. [ Therefore, foreign matter removed from the entire outer circumferential surface of the steel wire W can be removed through the suction hood 51.

As the foreign matter separated and removed from the steel wire W is completely removed from the steel wire W through the suction hood 51, foreign matter can be prevented from reattaching to the steel wire and the efficiency of cleaning the steel wire surface can be improved.

Hereinafter, the process of cleaning the surface of the steel wire by the following laser will be described.

According to the present embodiment, cleaning of the steel wire W is performed by continuously moving the steel wire, supporting the position of the steel wire, and irradiating the surface of the steel wire with a laser to remove foreign matter.

The steel wire is placed on the support members 20 and 21, and stably passes through the laser units 10 and 11 without vibration. In this process, the laser units 10 and 11 irradiate a laser beam onto the steel wire while maintaining the focus distance to the steel wire constant. That is, the present embodiment is able to irradiate the laser beam in a state in which the movement of the steel wire is supported while suppressing the movement as much as possible, so that the focus distance of the laser beam can be kept constant on the surface of the steel wire.

During the laser irradiation process, the laser units 10 and 11 are reciprocally rotated along the circumferential direction of the steel wire about the steel wire as the moving units 30 and 31 are driven. The focus of the laser beam is moved along the rounded surface of the steel wire in accordance with the reciprocating rotation of the laser parts 10 and 11. Thus, the energy of the laser beam is uniformly applied to the entire outer surface of the steel wire.

By irradiating the laser beam, energy above the bonding energy of the foreign matter adhering to the surface of the steel wire is incident on the surface of the steel wire. Therefore, due to the thermal stress due to the energy of the laser beam, the metal scale on the surface of the steel wire or the metal reaction product is removed from the steel wire.

In this process, the foreign object cleaned from the surface of the steel wire is completely separated from the steel wire by the injection pressure of the gas injected into the laser irradiation area, and sucked into the suction hood by the suction pressure through the suction hood.

Experimental Example

The laser cleaning test results for the steel wire according to the present embodiment will be described as follows. In the following experiments, the oxide layer adhered to the surface of the carbon steel wire was cleaned using a pulsed laser.

6 shows the surface of the steel wire before and after cleaning with respect to the steel wire. In this experiment, the steel wire with a diameter of 5.5 mm was subjected to laser cleaning.

As shown in FIG. 6, it can be confirmed that the oxide layer, which is a foreign substance, is cleanly removed from the surface of the steel wire through the laser cleaning.

FIG. 7 shows a state in which the oxide layer, which is a foreign substance, is removed from the surface of the steel wire through laser cleaning according to the present embodiment. This experiment was also conducted for a steel wire with a diameter of 5.5 mm. As shown in FIG. 7, the oxide layer attached to the surface of the steel wire was removed from the surface of the steel wire by performing a focus ion beam (FIB) on the interface between the cleaned oxide layer.

8 is an enlarged view of a boundary surface of a portion of the surface of the steel wire on which the oxide layer is cleaned by laser cleaning according to the present embodiment. In this experiment, the steel wire with a diameter of 1.65 mm was subjected to laser cleaning. As shown in Fig. 8, it can be seen that the oxide layer attached to the surface of the steel wire was removed by the incident energy of the laser.

9 and 10 show the results of grasping the composition of the surface area of the steel wire after cleaning with the laser and the surface area of the steel wire before cleaning. Fig. 9 shows the image of the steel wire surface after cleaning and the composition result. Fig. 10 shows the image of the steel wire surface before cleaning The results of the composition are shown. The test was carried out on a steel wire having a diameter of 1.65 mm.

As can be seen from the results, it can be seen that an oxide layer such as lead (Pb) is present on the surface of the steel wire before cleaning, and no lead or the like is detected after cleaning, so that the oxide layer is almost cleaned.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

10, 11: laser section 20, 21: support member
22, 26: rotating rollers 24, 25:
27: driving part 30, 31:
40: Dispenser 41: Dispenser
42: injection nozzle 43: gas supply part
50: Suction part 51: Suction hood
52: Suction pump

Claims (20)

A steel wire cleaning apparatus for removing foreign matter including a metal or a metal reaction product formed on a surface of a steel wire,
A laser portion disposed on a moving line of a continuously moving steel wire and irradiating a surface of the steel wire with a laser,
A wire supporting portion for supporting the wire and regulating its position with respect to the laser portion,
And a moving unit connected to the laser unit and reciprocating the laser unit at a predetermined angle along a circumferential direction of the steel wire with the steel wire as a center axis to move the laser beam irradiation area of the laser unit,
Wherein the plurality of laser units are arranged at intervals along the outer peripheral surface of the steel wire, and the plurality of laser units are arranged along the axial direction of the steel wire, respectively. delete delete The method according to claim 1,
Wherein the laser unit applies a pulse or continuous wave laser to a rigid surface. delete The method according to claim 1,
And a jetting section for supplying a gas to the laser irradiation area of the steel wire to remove particles generated during cleaning. The method according to claim 6,
Wherein the jetting portion comprises a jetting tube disposed along the periphery of the steel wire, a jetting nozzle provided along the jetting tube for jetting gas onto the surface of the steel wire, and a gas supply portion connected to the jetting tube for supplying gas, Device. The method according to claim 6,
Wherein the injecting portion injects an inert gas. The method according to claim 6,
And a suction unit disposed in the laser irradiation area of the steel wire and sucking and removing the particles generated during the laser cleaning. 10. The method of claim 9,
Wherein the suction portion includes a suction hood disposed to face the spray portion with the laser irradiation region of the steel wire therebetween and disposed along the periphery of the steel wire, and a suction pump connected to the suction hood to apply a suction force. The method according to any one of claims 1, 4, and 6 to 10,
Wherein the steel wire supporting portion includes a pair of supporting members spaced apart from each other on the ground and supporting the lower end of the steel wire. 12. The method of claim 11,
Wherein the steel wire supporting portion further comprises a rotating roller rotatably installed on the supporting member and having a groove on which a steel wire is seated on a contact surface with the steel wire. 13. The method of claim 12,
Wherein at least two of the rotating rollers are arranged along the circumferential direction of the steel wire. 12. The method of claim 11,
Wherein the steel wire supporting portion further comprises a pair of pressing members for pressing and supporting the upper end of the steel wire. 15. The method of claim 14,
And the wire supporting portion further includes a driving portion for moving the pressing member up and down. 16. The method of claim 15,
Wherein the steel wire supporting portion is rotatably installed on the upper pressing member and the contact surface with the steel wire further comprises a rotating roller having a groove on which the steel wire is seated. delete delete delete delete
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CN114247770A (en) * 2021-12-30 2022-03-29 苏州英忆新材料有限公司 Device for removing oxide skin on surface of nickel-titanium memory alloy wire and using method thereof

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