KR100292275B1 - Vacuum suction rolls for removing rolling mill lubricant on surface of steel sheet - Google Patents
Vacuum suction rolls for removing rolling mill lubricant on surface of steel sheet Download PDFInfo
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- KR100292275B1 KR100292275B1 KR1019960067653A KR19960067653A KR100292275B1 KR 100292275 B1 KR100292275 B1 KR 100292275B1 KR 1019960067653 A KR1019960067653 A KR 1019960067653A KR 19960067653 A KR19960067653 A KR 19960067653A KR 100292275 B1 KR100292275 B1 KR 100292275B1
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Abstract
Description
본 발명은 아연도금강판을 제조하는 설비의 조질압연기(SKIN PASS MILL)에서 분사된 압연유를 제거하는 장치에 관한것으로, 보다 상세히는 롤(ROLL)표면을 특수섬유로 코팅(COATING)하고 롤 내부는 중공(中空)상태로 만들어 진공펌프를 가동시킴으로써, 롤내부에 음압(진공)을 형성하여 강판표면에 잔류한 압연유를 흡인하여 제거하도록 된 강판표면의 압연유 제거용 진공흡인롤에 관한 것이다.The present invention relates to an apparatus for removing the rolled oil sprayed from the skin pass mill (SKIN PASS MILL) of the equipment for manufacturing galvanized steel sheet, more specifically, the surface of the roll (ROLL) coated with a special fiber (COATING) and the inside of the roll The present invention relates to a vacuum suction roll for removing rolling oil on a surface of a steel sheet, which is formed in a hollow state to operate a vacuum pump to form a negative pressure (vacuum) inside the roll to suck and remove the rolling oil remaining on the surface of the steel sheet.
일반적으로 아연도금강판 생산설비의 조질압연기(SKIN PASS MILL)는 강판의 형상을 교정하고, 연신을 부여함으로써 강판의 응력을 제거하여 후공정인 텐션레벨라(TENS10N LEVELLER) 와 후처리의 크롬처리설비(CHROMATE)로 이송시키는 설비이다.In general, SKIN PASS MILL of galvanized steel sheet production equipment removes stress of steel plate by correcting the shape of steel plate and applying drawing to remove tension stress of steel plate and chrome treatment facility of post treatment. It is a facility to transfer to (CHROMATE).
종래의 압연유제거장치의 구성도인 제1(a)도 및 제1(a)도에 대한 A-A단면도인 제1(b)도에서 도시된 바와 같이, 상기조질압연기(11)은 한쌍의 워크롤(WORK ROLL)(16) 사이를 도금강판(S)이 통과하면서 강판형상이 교정되고, 생산되는 아연 도금강판(5)의 종류에 따라 압연유(WET OIL)을 사용하거나 또는 사용하지 않게 된다.As shown in FIG. 1 (a) and FIG. 1 (b) which is a cross sectional view of a conventional rolled oil removing apparatus, the crude rolling mill 11 has a pair of work rolls. Steel plate shape is calibrated as the plated steel sheet S passes between the (WORK ROLL) 16, depending on the type of galvanized steel sheet 5 to be produced or not using a rolling oil (WET OIL).
압연유가 사용되는 경우는 미니스팡글(MINI SPANGLE)제품, 즉, 냉각압연코일을 아연도금하고 도금층의 스팡글(SPANGLE)생성을 억제시킨 제품을 생산시에는 워크롤(WORK ROLL)(16)과 아연도금강판(5)과의 마찰력을 감소시키고, 높은 연신율을 아연도금강판에 부여하기 위하여 조질압연 과정에서 워크롤(16)과 아연도금강판(5)사이에 분사노즐(SPRAY NOZZLE)(12)을 설치하여 압연유를 분사하면서 작업을 시행한다.When rolling oil is used, the work roll (16) and the mini spangle products (i.e., products with zinc plated cold rolled coils and suppressed spangle formation of the plated layer) are produced. SPRAY NOZZLE (12) between the work roll (16) and the galvanized steel sheet (5) during the temper rolling process to reduce the frictional force with the galvanized steel sheet (5) and to impart a high elongation to the galvanized steel sheet. The installation is carried out while spraying the rolling oil.
한편, 압연유가 도포되지 않으면서 조질압연 작업이 이루어지는 경우는 레귤러스팡글(REGULAR SPANGLE)제품이며, 이때는 압연유를 분사시키지 않으면서 작업이 이루어진다.On the other hand, when the rough rolling is performed without the rolling oil is applied to the regular product (REGULAR SPANGLE), in this case the work is performed without spraying the rolling oil.
그러나 상기 미니스팡글 제품의 생산시 분사된 압연유는 아연도금강판(5)이 후공정인 텐숀레벨러 (미도시)와 크롬처리장치(미도시)로 진입전에 반드시 제거되어야만 하기때문에, 이를 제거하기 위한 종래의 장치가 제1도 및 제2도에 도시되어있다.However, the rolled oil sprayed during the production of the mini-spangle products must be removed before entering the galvanized steel sheet 5 into the tension leveler (not shown) and the chromium treatment device (not shown). Conventional apparatus are shown in FIGS. 1 and 2.
종래기술에 다른 압연유 제거용 공기분사장치는 조질압연장치(11)의 워크롤(16)과 장력부여롤(14)사이에 1쌍의 상하공기노즐(13a)이 위치하고 장력부여롤(14)와 장력감지롤(15)사이에 1쌍의 상하 공기노즐(13b)이 위치하며, 상기공기노즐(13a)(13b)은 다수개의 노즐이 형성되어 아연도금강판(5)을 향해 설치되어있다.According to the related art, the air spraying device for removing rolling oil is provided with a pair of upper and lower air nozzles 13a between the work roll 16 and the tension applying roll 14 of the temper rolling device 11 and the tension applying roll 14 and A pair of upper and lower air nozzles 13b are positioned between the tension sensing rolls 15, and the air nozzles 13a and 13b are provided with a plurality of nozzles and are installed toward the galvanized steel sheet 5.
상기와 같이 구성된 종래의 공기분사장치는 아연도금강판(5)과 이것의 상하부면에 압연유가 도포된 상태로 조질압연기(11)을 빠져나오게 되면 공기노즐(13a)(13b)를 통해 고압공기를 분사하여 압연유를 제거하도록 되어있다.The conventional air spraying device configured as described above exits the temper mill 11 with the galvanized steel sheet 5 and the rolling oil applied to the upper and lower surfaces thereof, and the high-pressure air through the air nozzles 13a and 13b. It is designed to remove the rolling oil by spraying
그러나 상기와 같은 공기분사방법을 이용할 경우, 수용성의 압연유액이 완전히 제거되지 못하였다. 따라서 아연도금강판(S)에 압연유가 부착된 상태로 레벨라(미도시)의 롤(ROLL)에 결정물로 부착하여 강판표면에 전사되어 이물묻음의 표면결함를 유발하게 되고, 또한 크롬처리장치(미도시)에 진입하여 크롬용액을 오염시켜 크롬피막 형성을 방해하는 등의 제품불량의 주요원인이 되는 것이다.However, when using the air spraying method as described above, the water-soluble rolling fluid was not completely removed. Therefore, in the state where the rolling oil is attached to the galvanized steel sheet (S) attached to the roll (ROLL) of Revelra (not shown) as a crystal, it is transferred to the surface of the steel sheet to cause surface defects of foreign matters, and also the chrome treatment apparatus ( It is the main cause of product defects such as entering the (not shown) to contaminate the chromium solution and interfere with the formation of the chromium film.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된것으로서, 특수섬유를 롤표면에 원주방향으로 부착하고 모세관현상을 이용하여 도금강판(S)표면의 압연유를 흡수한후, 진공펌프를 가동하여 롤 내부를 진공(음압)상태을 형성하여 압연유를 흡인, 배출시키는 장치로서, 강판표면의 잔류오일을 완전히 제거하여 레벨링시 레벨러롤에 결정물로 부착하여 판면을 오염시키지 않고, 또한 후처리설비의 크롬용액을 오염시키지 않으며, 표면이 미려한 크롬피막을 형성시켜주고 압연유를 회수함으로써 생산원가를 절감하는, 강판표면의 압연유 제거용 진공흡인롤 장치를 제공함에 그 목적이 있다.Therefore, the present invention has been made in order to solve the above problems, the special fiber is attached to the roll surface in the circumferential direction and absorbs the rolling oil on the surface of the plated steel sheet (S) by using capillary action, then operates the vacuum pump It is a device that draws and discharges the rolling oil by forming a vacuum (negative pressure) state inside the rolls. It is an object of the present invention to provide a vacuum suction roll device for removing rolling oil on the surface of a steel sheet, which does not contaminate the chromium solution, forms a beautiful chrome coating, and reduces production costs by recovering the rolling oil.
제1(a)도는 종래의 압연유제거장치의 구성도.1 (a) is a block diagram of a conventional rolling oil removing device.
제1(b)도는 제1(a)도에 따른 장치의 A-A′ 단면도.FIG. 1 (b) is a cross-sectional view A-A 'of the device according to FIG. 1 (a).
제2도는 본 발명의 일실시예에 따른 강판 표면의 압연유제거용 진공흡인롤 장치의 구성도.2 is a block diagram of a vacuum suction roll device for removing the rolling oil on the surface of the steel sheet according to an embodiment of the present invention.
제3(a)도는 제2도에 따른 장치의 사용상태도.3 (a) is a state of use of the device according to FIG.
제3(b)도는 제3(a)도에 따른 장치의 A-A′ 단면도.3 (b) is a cross-sectional view A-A ′ of the device according to FIG. 3 (a).
제4도는 본 발명에 따른 진공흡은원리를 설명하기 위한 도면으로서,4 is a view for explaining the principle of vacuum suction according to the present invention,
제4(a)도는 개략도이고,4 (a) is a schematic diagram,
제4(b)도는 원리도이며,4 (b) is a principle diagram,
제4(c)도는 진공의 흐름도이다.4 (c) is a flowchart of a vacuum.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 조질압연기(SKIN PASS MILL) 12 : 압연유 분사노즐11: SKIN PASS MILL 12: Rolling oil spray nozzle
13 : 에어노즐(AIR NOZZLE) 14 : 장력부여롤(ROLL)13: AIR NOZZLE 14: Tension Roll (ROLL)
15 : 장력감지롤 16 : 워크롤(WORK ROLL)15: tension sensing roll 16: WORK ROLL
50 : 진공흡인롤 장치 51 : 진공흡인롤(ROLL)50: vacuum suction roll device 51: vacuum suction roll (ROLL)
52 : 공기실린더(AIR CYLINDER) 53 : 로타리조인트(ROTARY JOINT)52: AIR CYLINDER 53: ROTARY JOINT
54 : 구동모타(MOTOR) 55 : 샤프트(SHAFT)54: MOTOR 55: Shaft
61 : 인입세퍼레이터(INLET SEPARATOR) 71 : 진공펌프(VACCUM PUMP)61: INLET SEPARATOR 71: Vaccum Pump
72 : 펌프모타(PUMP MOTOR)72: Pump Motor
81 : 배출세퍼레이터(DRAIN SEPARATOR) 101 : 젖음부(WET PART)81: drain separator 101: wet part
102 : 건조부(DRY PART) 103 : 지지대102: DRY PART 103: Support
104 : 흡입관 105 : 진공부(VACCUM PART)104: suction pipe 105: vacuum part (VACCUM PART)
상기 목적을 달성하기 위하여, 본 발명은 도금강판표면에 잔류된 압연유를 제거하기 위한 진공흡인롤 장치에 있어서, 내부에 공동부(105)및 벽부분에 흡입관(104)이 형성되어있는 지지대(104)와 이것의 외주에 부착되어있는 섬유층(102)으로 이루어지며, 상하이동가능하고 회전가능하게 설치되는 진공흡인롤(51a), (51b)과, 상기 흡인롤의 한쪽 끝단에 각각 설치되어 있는 로타리 조인트(53)와, 상기흡인롤이 내부를 진공상태로 만들기위한 진공펌프(71)과, 상기 흡인롤과 진공펌프의 사이에 설치되며 상기흡인롤에 흡인된 압연유를 회수하여 공기와 압연유로 분리시키는 인입세퍼레이터(61)과, 상기 인입세퍼레이터로 부터의 공기를 대기로 배기하는 배출세퍼레이터(81)를 구비하여 이루어지는 것을 특징으로 하는 강판 표면의 압연유 제거용 진공흡인롤 장치를 제공한다.In order to achieve the above object, the present invention is a vacuum suction roll device for removing the rolling oil remaining on the surface of the plated steel sheet, the support portion 104 is formed in the cavity 105 and the suction pipe 104 in the wall portion therein And a fibrous layer (102) attached to the outer periphery thereof, the vacuum suction rolls (51a) and (51b) which are movable and rotatably installed, and rotary joints respectively provided at one end of the suction rolls. (53) and the vacuum pump 71 for vacuuming the inside of the suction roll and the suction roll and the vacuum pump to recover the rolling oil sucked in the suction roll to separate the air and the rolling oil. The suction separator 61 and the discharge separator 81 which exhausts the air from the said suction separator to air | atmosphere are provided, The vacuum suction roll apparatus for removing the rolling oil of the steel plate surface characterized by the above-mentioned. The ball.
이하 본 발명의 일실시예를 첨부도면을 참조하여 더욱 상세히 설명하기로 한다. 도면에서, 제2도는 본 발명의 일실시예에 따른 강판표면의 압연유제거용 진공흡인롤장치의 구성도이고, 제3(a)도는 제2도에 따른 장치의 사용상태도이고, 제3(b)도는 제3(a)도에 따른 장치의 A-A단면도이고, 제4도는 본 발명에 따른 진공흡인원리를 설명하기 위한 도면으로서, 제4(a)도는 개략적이고, 제4(b)도는 원리도이며, 제4(c)도는 진공의 흐름도이다.Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings. 2 is a configuration diagram of a vacuum suction roll device for removing rolling oil from a steel plate surface according to an embodiment of the present invention, and FIG. 3 (a) is a diagram showing a state of use of the apparatus according to FIG. ) Is a cross-sectional view AA of the apparatus according to the third (a), Figure 4 is a view for explaining the vacuum suction principle according to the present invention, Figure 4 (a) is a schematic view, Figure 4 (b) is a principle diagram 4 (c) is a flowchart of a vacuum.
제2도및 제3도를 참조하면, 본 실시예에 따른 흡인롤장치(50)은 흡인롤(51a)(511)과 인입세퍼레터(61), 진공펌프(71)와 배출세퍼레터(81)을 갖추고 있다.2 and 3, the suction roll device 50 according to the present embodiment is a suction roll (51a) 511 and the inlet separator 61, the vacuum pump 71 and the discharge separator (81) Equipped)
상기 흡인롤(51)은 특수섬유로 만들어져 원주방향으로 부착되며, 제2도에 도시 된 바와같이 상부흡인롤(51a)의 샤프트(55)에는 공기실린더(52a)(52b)가 2 개 설치되며, 이는 상부흡인롤을 상하로 업다운시킨다. 공기실린더(52a,52b)에는 압력계(미도시)가 구비되어 롤에 가압되는 압력치를 확인할 수 있다.The suction roll 51 is made of special fibers and attached in the circumferential direction, and two air cylinders 52a and 52b are installed on the shaft 55 of the upper suction roll 51a as shown in FIG. This raises the upper suction roll up and down. Air cylinders (52a, 52b) is provided with a pressure gauge (not shown) can check the pressure value that is pressed on the roll.
하부 흡인롤(51b)에는 구동모터(54)가 장착되어 롤을 구동시키게 된다. 또한 롤 샤프트 끝단에는 로타리조인트(ROTARY JOINT)(53)가 각각 설치되어진다. 그리고 흡인롤(51a)(51b)메서 흡인된 압연유를 분리해 주는 인입세퍼레터(61)가 설치되어 압연유와 공기를 분리시킨다.The driving motor 54 is mounted on the lower suction roll 51b to drive the roll. In addition, a rotary joint 53 is provided at the end of the roll shaft. In addition, an inlet separator 61 for separating the rolled oil sucked by the suction rolls 51a and 51b is provided to separate the rolled oil and the air.
인입세퍼레터(61) 후단에는 진공펌프(71)가 설치되고 진공펌프(71)를 작동시키는 모터(72)가 구비된다. 또한 진공펌프(71)을 통과한 미립압연유 및 공기 혼합물을 최종적으로 분리해주는 배출세퍼레터(81)가 갖춰진다.The rear end of the inlet separator 61 is provided with a vacuum pump 71 and a motor 72 for operating the vacuum pump 71. In addition, a discharge separator 81 for finally separating the granulated oil and the air mixture passed through the vacuum pump 71 is provided.
상기와 같이 구성된 본발명에 따른 강판 표면의 압연유제거용 진공흡인롤장치의 작용을 설명하면 다음과 같다.Referring to the operation of the vacuum suction roll device for removing the rolling oil on the surface of the steel sheet according to the present invention configured as described above are as follows.
조질압연기(11)을 거친 강판 표면에 잔류압연유를 제거하기 위하여, 하부 흡인롤(51b)에 연결된 구동모터(54)을 작동시킨다. 그리고 상부흡인롤(51a)을 한쌍의 공기실린더(52a, 52b로 가압하여 강판표면(S)에 밀착시킨다. 도금강판(S)에 밀착된 1쌍의 흡인롤(51a, 51b)은 모세관현상에 의하여 강판표면의 압연유를 롤표면에 스며들게 한다. 흡인롤(51a, 51b)표면에 스며든 압연유는 진공펌프(71)의 가동으로 형성된 진공압(약-300~-400mmHg)에 의하여 롤(51a, 51b)내부로 흡인된다.In order to remove the residual rolling oil on the surface of the steel sheet passed through the rough rolling mill 11, the drive motor 54 connected to the lower suction roll 51b is operated. Then, the upper suction roll 51a is pressed by a pair of air cylinders 52a and 52b to be in close contact with the steel plate surface S. The pair of suction rolls 51a and 51b which are in close contact with the plated steel sheet S are capillary phenomenon. The oil rolled on the surface of the steel sheet is infiltrated on the surface of the roll, and the oil rolled on the surface of the suction rolls 51a and 51b is formed by the vacuum pressure (about -300 to -400mmHg) formed by the operation of the vacuum pump 71. 51b) aspirated internally.
한편 제4도는 흡인롤에 의한 진공흡인의 원리를 나타내었다. 제4(a)도에 도시된 바와 같이 흡인롤(51a)(51b)사이를 스트립(S)이 통과하면서 흡인롤(51a)(51b)표면에 스며든 압연유(1a)는, 처음에는 제4(b)도에 도시된 바와같이 젖음부(WET PART)(101)을 형성하지만 제4(c)도에서 도시된 바와같이 롤 회전과 롤 진공부(105)의 음압으로 인해 화살표로 도시한 바와같이 흡입관(104)을 통하여 롤 진공부(105)로 흡인되어, 결국 건조부(DRY PART)(102)로 진행되어진다.4 shows the principle of vacuum suction by the suction roll. As shown in FIG. 4 (a), the rolling oil 1a that penetrates the surfaces of the suction rolls 51a and 51b while the strip S passes between the suction rolls 51a and 51b is initially subjected to the fourth pressure. As shown in FIG. 4B, the wet part 101 is formed, but as shown in FIG. 4C, due to the rotation of the roll and the negative pressure of the roll vacuum unit 105 as shown by the arrows, Similarly, it is sucked into the roll vacuum part 105 through the suction pipe 104, and it progresses to the dry part (DRY PART) 102 finally.
상기와 같이 롤 진공부(105)에 모아진 압연유 및 공기혼합물은 로타리조인트 (ROTARY JOINT)(53)를 통하여 인입세퍼레이터(61)로 전달된다.As described above, the rolled oil and the air mixture collected in the roll vacuum unit 105 are transferred to the inlet separator 61 through a rotary joint 53.
인입세퍼레터(61)로 인입된 압연유 혼합물은 필터(FILTER)을 통하여 압연유는 분리되어 회수되고, 공기는 진공펌프(71)로 향해 보내진다. 또한 진공펌프(71)는 펌프 모터(72)에 의해 작동되어 약 (-300∼-400mmHg)의 진공압을 생성시키며, 진공펌프(71)은 냉각수에 의해 냉각되어진다. 진공펌프(71)후단에 배출세퍼레터(81)가 설치되고 배출세퍼레터(81)에 인낄된 미립압연유 및 공기는 분리되어 공기는 대기로 배기되며 압연유는 회수가 된다.The rolled oil mixture drawn into the drawing separator 61 is separated and recovered through a filter FILTER, and air is directed to the vacuum pump 71. In addition, the vacuum pump 71 is operated by the pump motor 72 to generate a vacuum pressure of about (-300 ~ -400mmHg), the vacuum pump 71 is cooled by the cooling water. A discharge separator 81 is installed at the rear of the vacuum pump 71, and the particulate rolled oil and air encapsulated in the discharge separator 81 are separated, and the air is exhausted to the atmosphere, and the rolled oil is recovered.
이상에서 본 발명은 그의 바람직한 일실시예를 기준으로 설명하고 도시하였지만 당업지는 본 발명의 요지를 일탈하지 않는 범위에서 상기 실시예에 대한 다양한 변경 및 수정이 가능함을 명백히 알 수 있다.Although the present invention has been described and illustrated with reference to a preferred embodiment thereof, it can be clearly understood that various changes and modifications can be made to the embodiment without departing from the gist of the present invention.
상기와 같이 본 고안에 의하면, 조질압연후 강판표면에 잔류한 압연유를 진공흡인롤을 사용하여 효과적으로 제거함으로써 종래에 제기되었던 문제점이 해소된다.According to the present invention as described above, by removing the rolled oil remaining on the surface of the steel sheet after the temper rolling by using a vacuum suction roll effectively solves the problems raised in the prior art.
즉 레벨라 롤을 오염시키지 않고, 후처리설비의 크롬용액이 오염되지 않음으로 제품품질이 향상기고, 압연유를 회수함으로써 생산원가가 절감되는 등의 효과를 제공한다.That is, it does not contaminate the level rolls and does not contaminate the chromium solution of the aftertreatment facility, thereby improving product quality and reducing the production cost by recovering the rolled oil.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960067653A KR100292275B1 (en) | 1996-12-19 | 1996-12-19 | Vacuum suction rolls for removing rolling mill lubricant on surface of steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960067653A KR100292275B1 (en) | 1996-12-19 | 1996-12-19 | Vacuum suction rolls for removing rolling mill lubricant on surface of steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980048992A KR19980048992A (en) | 1998-09-15 |
| KR100292275B1 true KR100292275B1 (en) | 2001-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019960067653A KR100292275B1 (en) | 1996-12-19 | 1996-12-19 | Vacuum suction rolls for removing rolling mill lubricant on surface of steel sheet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101440093B1 (en) | 2013-05-03 | 2014-09-17 | 주식회사 세일특수강 | Apparatus for removing oil from the surface of strip |
| KR20150090551A (en) | 2014-01-29 | 2015-08-06 | 장성욱 | Vacuum roll apparatus of rolling mill |
| KR101639251B1 (en) * | 2015-07-16 | 2016-07-13 | 주식회사 포스코 | Wringer Roll and Apparatus having the same for removing foreign materials |
| KR20200076068A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 포스코 | Foreign Matter Removal Type Steel Sheet Transferring Roll |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101294017B1 (en) * | 2013-04-15 | 2013-08-16 | 대한동방 주식회사 | A vacuum pressure suction roll with improved suction efficiency |
-
1996
- 1996-12-19 KR KR1019960067653A patent/KR100292275B1/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101440093B1 (en) | 2013-05-03 | 2014-09-17 | 주식회사 세일특수강 | Apparatus for removing oil from the surface of strip |
| KR20150090551A (en) | 2014-01-29 | 2015-08-06 | 장성욱 | Vacuum roll apparatus of rolling mill |
| KR101639251B1 (en) * | 2015-07-16 | 2016-07-13 | 주식회사 포스코 | Wringer Roll and Apparatus having the same for removing foreign materials |
| KR20200076068A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 포스코 | Foreign Matter Removal Type Steel Sheet Transferring Roll |
| KR102178679B1 (en) * | 2018-12-19 | 2020-11-13 | 주식회사 포스코 | Foreign Matter Removal Type Steel Sheet Transferring Roll |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980048992A (en) | 1998-09-15 |
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