KR101663772B1 - Apparatus and method for producing horizontal hairline - Google Patents

Apparatus and method for producing horizontal hairline Download PDF

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Publication number
KR101663772B1
KR101663772B1 KR1020150052027A KR20150052027A KR101663772B1 KR 101663772 B1 KR101663772 B1 KR 101663772B1 KR 1020150052027 A KR1020150052027 A KR 1020150052027A KR 20150052027 A KR20150052027 A KR 20150052027A KR 101663772 B1 KR101663772 B1 KR 101663772B1
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KR
South Korea
Prior art keywords
roll
steel sheet
pattern
rolls
steel plate
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KR1020150052027A
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Korean (ko)
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KR20160096522A (en
Inventor
김종국
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주식회사대양금속
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/005—Rolls with a roughened or textured surface; Methods for making same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B2001/081—Roughening or texturing surfaces of structural sections, bars, rounds, wire rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • B21B2023/005—Roughening or texturig surfaces of tubes

Abstract

The present invention relates to a cold rolling mill (CRM) in which a cold rolling process of a steel sheet is performed, a pattern roll engraved so that a horizontal hairline pattern protrudes on a surface thereof, and a pressure is applied to the steel plate to engage a horizontal hairline pattern. A plurality of first intermediate rolls positioned below the pattern roll; A plurality of first drive rolls positioned below the first intermediate roll; A first flow roll positioned between the plurality of first drive rolls; A plurality of first backup rolls positioned below the first drive roll and the first flow roll; A work roll positioned so as to be opposed to each other about the pattern roll and the passing steel plate; A plurality of second intermediate rolls positioned above the work roll; A plurality of second drive rolls positioned above the second intermediate roll; A second flow roll positioned between the plurality of second drive rolls; A second backup roll located above the second drive roll and the second flow roll; Wherein when a steel sheet subjected to a primary rolling process and a primary heat treatment process passes between a pattern roll and a work roll which are rotated in opposite directions to each other and a pressure is applied to the steel sheet, Is transferred to the back surface of the steel sheet. According to the present invention, it is possible to provide a horizontal hairline manufacturing apparatus and method capable of transferring a hairline in a transverse direction to a steel sheet during a cold rolling process of the steel sheet, and producing a smooth and uniformly polished surface sheet.

Description

[0001] APPARATUS AND METHOD FOR PRODUCING HORIZONTAL HAIRLINE [0002]

The present invention relates to an apparatus and a method for manufacturing a horizontal hairline, and more particularly, to an apparatus and a method for manufacturing a horizontal hairline, which can transfer a hairline in a lateral direction to a steel sheet during a cold rolling process of the steel sheet, To a hair line manufacturing apparatus and method.

The present invention relates to an apparatus and a method for manufacturing a horizontal hairline.

The background technology of the present invention is a surface polishing method of a steel sheet using a sand belt.

The surface polishing method of the general steel sheet is necessarily performed in the longitudinal direction of the steel sheet 10 in a manner that it is implemented on the welded surface by the sand belt 14 rotating on the surface or the back surface of the steel sheet 10 in the CPL (Coil Polishing Line) It is characterized by machining the polishing surface required by the customer. Such a method is the most common and universal processing method, but it does not implement a polishing surface other than the longitudinal direction of the steel sheet, and the passive coating layer of the steel sheet is forcibly cut to promote the generation of rust when it is combined with oxygen or moisture, There is a problem that the reliability of the quality of the product is lost.

In addition, since the quality uniformity and continuity of the abrasive surface of the steel sheet surface are deteriorated due to the wear of the sand belt 14, the quality of the quality of the steel sheet can be adversely affected have.

In order to compensate for this, the steel sheet is polished in a sheet state. However, in this case, the uniformity of quality is lowered and the quality defect rate is high. Therefore, there is a problem in that quality is guaranteed due to increase of sand belt usage and surface scratch. Coil Polishing Line) (speed: 12 ~ 24 rpm), productivity is remarkably low and there is also a disadvantage of rust.

1 is a view showing a polishing process of a steel sheet using a general sand belt.

Referring to FIG. 1, the heat treated hard material is sandwiched between a slip roll 11 to which a sand belt is connected and a billi roll 12 located at a lower side of the steel plate, at a low speed of 10 to 20 mpm, When the surface polishing is performed by applying a pressure to the sand belt 14 rotating at high speed of 1,800 to 1,400 rpm in cooperation with the contact roll 11 and the tension roll 13, a large amount of steel sludge and the removed sand belt 14 ) Particles are generated and a washing process is necessarily required.

In this case, a large amount of quality defects such as a dent or a cleaning solution stain is generated by the generated sludge, and a separate filter device for sludge treatment is required to prevent this.

In addition, it is practically difficult to manage new or used sand belts and concentration control of the polishing liquid, which are important for maintaining the desired surface profile of the demand.

Although the technique as a background of the present invention is disclosed in Korean Patent Laid-Open Publication No. 2003-0035529, a fundamental solution to the above-described problem is not presented.

It is an object of the present invention, which is devised to solve the problems described above, to provide a horizontal hair line manufacturing apparatus capable of transferring a hair line in a transverse direction to a steel sheet during a cold rolling process of the steel sheet, And a method.

Another object of the present invention is to provide an apparatus and a method for manufacturing a horizontal hairline that can prevent rust from being generated in a steel sheet by using mineral mineral oil as a rolling oil during a rolling process.

Still another object of the present invention is to prevent the rusting or corrosion of the passive film layer on the surface of the steel sheet due to forcible cutting of the passive film layer in the CPL process because the pattern is stamped by applying a low reduction ratio of 5 to 6% And to provide a device and a method for manufacturing a horizontal hairline having high productivity because the service life of the roll is prolonged.

According to an aspect of the present invention, there is provided an apparatus for manufacturing a horizontal hairline, comprising: a cold rolling mill (CRM) in which a cold working process of a steel sheet (10) is performed; A pattern roll (110) engraved so that a hairline pattern protrudes in a transverse direction in the rolling direction of the steel sheet (10) from 0.85 to 0.95 탆; A plurality of first intermediate rolls 120 positioned below the pattern roll 110; A plurality of first driving rolls 130 positioned below the first intermediate rolls 120; A first flow roll (140) positioned between the plurality of first drive rolls (130); A plurality of first backup rolls 150 positioned below the first drive roll 130 and the first flow roll 140; A work roll 160 located opposite to the pattern roll 110 and facing the steel plate 10 passing therethrough; A plurality of second intermediate rolls 170 positioned above the work rolls 160; A plurality of second driving rolls 180 positioned above the second intermediate rolls 170; A second flow roll (190) positioned between the plurality of second drive rolls (180); A second backup roll 200 positioned above the second drive roll 180 and the second flow roll 190; And the steel plate 10 that has been subjected to the primary rolling process and the primary heat treatment process passes between the pattern roll 110 and the work roll 160 rotated in opposite directions to each other, The hair line pattern protruding from the pattern roll 110 is transferred in the transverse direction in the rolling direction of the steel sheet 10 through which the pressure is applied by a reduction ratio of 6%.

Further, it is characterized in that the rolling oil containing mineral mineral oil is sprayed when the steel sheet is rolled by the pattern roll and the work roll.

delete

A method for manufacturing a horizontal hairline according to the present invention comprises the steps of: (a) uncoiling a steel sheet 10 in a coil state and firstly rolling it; (b) primary heat treatment of the primary rolled steel sheet (10) through a luster softening heat treatment process; (c) The steel sheet 10 subjected to the primary heat treatment has a surface roughness of 0.85 to 0.95 占 퐉 and is patterned on the outer side so as to protrude a hairline pattern in a transverse direction in the rolling direction of the steel sheet 10; When the steel plate 10 passes between the pattern roll 110 and the work roll 160 located opposite to each other, the steel plate 10 is subjected to a pressure of 5 to 6% A second step of rolling the hair line pattern of the pattern roll 110 onto the steel sheet 10; (d) a second heat treatment of the secondary rolled steel sheet 10; (e) the steel plate 10 subjected to the second heat treatment is calibrated at a leveler including a flatness; (f) shaping the leveled steel plate 10 according to demand; .

Further, in the step (c), when the steel sheet is rolled by the pattern roll and the work roll, the rolling oil containing mineral mineral oil is sprayed.

According to the present invention as described above, it is possible to provide a horizontal hairline manufacturing apparatus and method capable of transferring a hairline in a transverse direction to a steel sheet during a cold rolling process of the steel sheet, thereby producing a smooth and uniformly polished steel sheet .

In addition, according to the present invention, it is possible to provide an apparatus and a method for manufacturing a horizontal hairline that can prevent rust from being generated in a steel sheet by using a mineral mineral oil as a rolling oil during a rolling process.

According to the present invention, since the pattern is stamped by applying a low rolling reduction of 5 to 6%, it is possible to prevent the passive film layer on the steel sheet surface from being forcibly cut in the CPL process to prevent rusting or corrosion, It is possible to provide an apparatus and a method for manufacturing a horizontal hairline having a long life and high productivity.

1 is a view showing a polishing process of a steel sheet using a general sand belt.
2 is a view illustrating an apparatus for manufacturing a horizontal hair line according to a preferred embodiment of the present invention.
3 is a flow chart of a method of manufacturing a horizontal hairline according to a preferred embodiment of the present invention.
4 is a detailed flowchart of a secondary rolling process according to a preferred embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the accompanying drawings which illustrate an apparatus and a method for manufacturing a horizontal hairline according to embodiments of the present invention.

2 is a view illustrating an apparatus for manufacturing a horizontal hair line according to a preferred embodiment of the present invention.

Referring to FIG. 2, a horizontal hair line manufacturing apparatus 100 according to a preferred embodiment of the present invention includes a cold rolling mill (CRM) in which a steel plate 10 is subjected to a cold working process, And a work roll 160.

At this time, a horizontal hairline pattern protrudes from the outer surface of the pattern roll 110, and the work roll 160 is disposed on the lower side of the steel strip 10 passing through the pattern roll 110, .

The steel plate 10 subjected to the primary rolling process and the primary heat treatment process passes between the pattern roll 110 and the work roll 160 rotating in opposite directions and the pattern roll 110 is wound on the steel plate 10, The horizontal hair line pattern protruding from the pattern roll 110 is transferred to the back surface of the steel plate 10 by applying pressure by the work roll 160 and the work roll 160.

At this time, the pattern roll 110 is provided with a horizontal hair line standard pattern having a surface roughness of 0.85 to 0.95 mu m uniformly so as to be uniformly formed, and the horizontal hair line pattern is prepared to be transferred to the front surface or the back surface of the steel sheet 10.

When the steel plate 10 is rolled by the pattern roll 110 and the work roll 160, rolling oil is sprayed to imprint the pattern without damaging the passive film layer of the steel plate 10, .

At this time, the reduction rate at which the steel strip 10 is rolled by the pattern roll 110 and the work roll 160 is limited to a low pressure of 5 to 6% so that a beautiful surface is realized on the front surface or the back surface of the steel strip 10 , The use period of the pattern roll 110 is increased.

In addition, the horizontal hairline manufacturing apparatus 100 further includes a first intermediate roll 120 and a second intermediate roll 170.

The second intermediate rolls 170 are positioned to be in contact with the upper side of the work roll 160 so that the first intermediate rolls 120 are brought into contact with the lower side of the pattern roll 110, 110 and the work roll 160 to prevent a warp phenomenon from occurring.

For this, the first intermediate roll 120 and the second intermediate roll 170 may be formed of a plurality of rolls.

In addition, the horizontal hairline manufacturing apparatus 100 further includes a first driving roll 130 and a second driving roll 180.

At this time, the first driving roll 130 is positioned in contact with the lower side of the first intermediate roll 120, and the second driving roll 180 is positioned in contact with the upper side of the second intermediate roll 170 Thereby supporting the first intermediate roll 120 and the second intermediate roll 170 to prevent a warp phenomenon from occurring.

For this purpose, the first driving roll 130 and the second driving roll 180 are preferably formed in a plurality.

In addition, the horizontal hairline manufacturing apparatus 100 further includes a first flow roll 140 and a second flow roll 190.

At this time, the first flow roll 140 is positioned between the plurality of first driving rolls 130 while being in contact with the lower side of the first intermediate roll 120, The first and second intermediate rolls 170 and 170 prevent the first and second intermediate rolls 130 and 130 from being bent together with the first intermediate roll 170 and the first intermediate roll 170, The second intermediate roll 170 is supported together with the second driving roll 180 to prevent a warp phenomenon from occurring.

For example, as shown in FIG. 2, the first intermediate roll 120 is composed of two rolls, and the first driving roll 130 is also composed of two rolls, And the first flow rolls 140 are positioned between the two first drive rolls 130 to support the entire structure at the center.

The horizontal hairline manufacturing apparatus 100 further includes a plurality of first backup rolls 150 and a plurality of second backup rolls 200.

At this time, the first backup roll 150 is positioned below the first driving roll 130 and the first flow roll 140 to prevent the bending phenomenon, and in particular, the bending phenomenon in which both sides of the roll are bent prevent.

The second backup roll 200 is also positioned to be in contact with the second drive roll 180 and the second flow roll 190 to prevent the bending phenomenon and particularly to prevent the bending phenomenon in which both sides of the roll are bent .

For example, the first backup roll 150 is formed of four pieces, and supports the first driving roll 130 and the first flow roll 140 as a whole, and the second backup roll 200 also has four Thereby supporting the second drive roll 180 and the second flow roll 190 as a whole.

In addition, all the rolls including the pattern roll 110 are configured so as not to exceed 15 tons, respectively, so that an unreasonable load is applied to the steel plate 10 to prevent deterioration of the pattern quality.

Such a combination of rolls may have the advantage of producing a desired product by replacing the pattern roll 110 imprinted with the horizontal hairline with a pattern imprinted with a depth and a skewed surface of a pattern desired by the customer , The pattern roll 110 may be replaced with a roll for rolling only.

Hereinafter, a method of manufacturing a horizontal hair line according to a preferred embodiment of the present invention will be described.

A horizontal hairline manufacturing method according to a preferred embodiment of the present invention relates to a method of transferring a horizontal hairline to a steel sheet using a cold rolling mill (CPL).

3 is a flow chart of a method of manufacturing a horizontal hairline according to a preferred embodiment of the present invention.

Referring to FIG. 3, first, the steel sheet 10 in a coil state is uncoiled (step S110). That is, the steel sheet 10 wound in a roll form is unfolded and prepared for easy processing.

Then, the steel sheet 10 is subjected to primary rolling (step S120).

At this time, the steel sheet 10 having a reduction ratio of about 3.0% to about 80% applied to the steel sheet 10 is rolled to a thickness of 0.51 mm through primary rolling.

Next, the primary steel sheet 10 is subjected to a primary heat treatment so as to soften the steel material through the light-softening heat treatment process so as to facilitate secondary rolling (step S130).

At this time, "Bright Heat Treatment" is a general term for heat treatment while preventing the oxidation decarburization of the steel so that the surface of the shiny steel is maintained. The brass heat treatment is carried out by heating and cooling in a vacuum furnace under a suitable reducing or neutral atmosphere.

Then, secondary rolling is performed to transfer the horizontal hairline pattern to the steel plate 10 subjected to the primary heat treatment (step S140).

The steel sheet 10 is passed between a pattern roll 110 and a work roll 160 located opposite to the pattern roll 110. The horizontal hair line pattern 10 engraved on the outer side of the pattern roll 110, Is transferred to the back surface of the steel plate (10).

The reduction rate in the secondary rolling is 6%, and the thickness of the steel sheet 10 having the thickness of 0.51 mm in the step S120 is 0.48 mm through the secondary rolling process.

At this time, the step S140 may be subdivided into steps S141 to S143.

The steel sheet 10 is then passed between the pattern roll 110 and the work roll 160 (step S142), and then, , The horizontal hairline pattern is transferred to the steel sheet 10 (step S143).

The rolling oil is preferably sprayed in order to prevent the rust on the steel plate 10, using mineral mineral oil.

The steel sheet 10 that has passed through the step S140 for the first time checks the pattern with naked eyes before proceeding to the next step, checks the illuminance and gloss of the warp surface, and adjusts the pressing force appropriately so that a uniform pattern is transferred do.

Then, the secondary steel sheet 10 is subjected to secondary heat treatment (step S150).

Through the above step S150, the workability of the steel plate 10 can be improved.

At this time, periodic cleaning of the heat treatment cooling cooler is essential in the secondary heat treatment process.

Then, the steel plate 10 subjected to the second heat treatment is subjected to leveling in which the shape is corrected in the leveler (step S160).

In general, in the leveling step, the flatness of the steel plate 10 is corrected, and particularly, the flatness is controlled around the shape of the steel plate 10. Through this leveling process, the change in shape with respect to the entire width of the steel plate 10 It is possible to prevent a local flat defect.

Then, the leveled steel plate 10 is subjected to shearing according to the demand (step S170).

At this time, the width and length of the steel plate 10 are slitted or sheared according to the specifications desired by the customer, and then packaged and supplied.

It is preferable that the annealing speed or the cooling temperature condition in the step S120 to S150 is kept constant during the process.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and range of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10 steel sheet 11 tie plate
12 Billy Roll 13 Tension Roll
14 Sand Belt 100 Horizontal Hairline Manufacturing Equipment
110 pattern roll 120 first intermediate roll
130 First driving roll 140 First flowing roll
150 First backup roll 160 Work roll
170 Second intermediate roll 180 Second drive roll
190 second flow roll 200 second backup roll

Claims (5)

In a cold rolling mill (CRM) in which a steel plate 10 is subjected to a cold working process,
A pattern roll 110 having a surface roughness of from 0.85 to 0.95 탆 and being embossed so as to protrude a hairline pattern in a transverse direction in the rolling direction of the steel sheet 10; A plurality of first intermediate rolls 120 positioned below the pattern roll 110; A plurality of first driving rolls 130 positioned below the first intermediate rolls 120; A first flow roll (140) positioned between the plurality of first drive rolls (130); A plurality of first backup rolls 150 positioned below the first drive roll 130 and the first flow roll 140; A work roll 160 located opposite to the pattern roll 110 and facing the steel plate 10 passing therethrough; A plurality of second intermediate rolls 170 positioned above the work rolls 160; A plurality of second driving rolls 180 positioned above the second intermediate rolls 170; A second flow roll (190) positioned between the plurality of second drive rolls (180); A second backup roll 200 positioned above the second drive roll 180 and the second flow roll 190; / RTI >
When the steel sheet 10 subjected to the primary rolling and the primary heat treatment passes between the pattern roll 110 and the work roll 160 rotating in opposite directions to each other, The hair line pattern protruding from the pattern roll 110 is transferred in the transverse direction in the rolling direction of the steel sheet 10 to be passed therethrough.
The method according to claim 1,
And spraying the rolling oil containing the mineral mineral oil when the steel sheet (10) is rolled by the pattern roll (110) and the work roll (160).
delete (a) a steel plate 10 in a coil state is uncoiled and firstly rolled;
(b) primary heat treatment of the primary rolled steel sheet (10) through a luster softening heat treatment process;
(c) The steel sheet 10 subjected to the primary heat treatment has a surface roughness of 0.85 to 0.95 占 퐉 and is patterned on the outer side so as to protrude a hairline pattern in a transverse direction in the rolling direction of the steel sheet 10; When the steel plate 10 passes between the pattern roll 110 and the work roll 160 located opposite to each other, the steel plate 10 is subjected to a pressure of 5 to 6% A second step of rolling the hair line pattern of the pattern roll 110 onto the steel sheet 10;
(d) a second heat treatment of the secondary rolled steel sheet 10;
(e) the steel plate 10 subjected to the secondary heat treatment is calibrated at a leveler including a flatness;
(f) shaping the leveled steel plate 10 according to demand; ≪ / RTI >
5. The method of claim 4,
Wherein rolling oil containing mineral mineral oil is sprayed when the steel sheet is rolled by the pattern roll (110) and the work roll (160) in step (c).

KR1020150052027A 2015-02-05 2015-04-13 Apparatus and method for producing horizontal hairline KR101663772B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190077971A (en) 2017-12-26 2019-07-04 주식회사 포스코 Appratus for forming pattern on surface of roll and metal plate manufacturing method
KR102122556B1 (en) 2020-02-28 2020-06-15 강원구 Apparatus for polishing steel plate surface
KR102473186B1 (en) 2022-05-30 2022-12-02 (주)디엠에스코리아 Apparatus for polishing steel plate surface

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KR102529159B1 (en) 2021-05-26 2023-05-03 오대종 Hairline forming brush and its manufacturing method

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Publication number Priority date Publication date Assignee Title
KR100726827B1 (en) * 2006-02-24 2007-06-11 주식회사 케벨코 18high cluster rolling mill
JP2009178734A (en) * 2008-01-30 2009-08-13 Hitachi Cable Ltd Method for manufacturing metal foil material

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Publication number Priority date Publication date Assignee Title
KR20140001512A (en) * 2012-06-27 2014-01-07 현대자동차주식회사 Method for rolling of stainless steel

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Publication number Priority date Publication date Assignee Title
KR100726827B1 (en) * 2006-02-24 2007-06-11 주식회사 케벨코 18high cluster rolling mill
JP2009178734A (en) * 2008-01-30 2009-08-13 Hitachi Cable Ltd Method for manufacturing metal foil material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190077971A (en) 2017-12-26 2019-07-04 주식회사 포스코 Appratus for forming pattern on surface of roll and metal plate manufacturing method
KR102122556B1 (en) 2020-02-28 2020-06-15 강원구 Apparatus for polishing steel plate surface
KR102473186B1 (en) 2022-05-30 2022-12-02 (주)디엠에스코리아 Apparatus for polishing steel plate surface

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