KR20030018174A - An apparatus for preventing a strip-vibration - Google Patents

An apparatus for preventing a strip-vibration Download PDF

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Publication number
KR20030018174A
KR20030018174A KR1020010051756A KR20010051756A KR20030018174A KR 20030018174 A KR20030018174 A KR 20030018174A KR 1020010051756 A KR1020010051756 A KR 1020010051756A KR 20010051756 A KR20010051756 A KR 20010051756A KR 20030018174 A KR20030018174 A KR 20030018174A
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KR
South Korea
Prior art keywords
strip
magnetic force
plating
pair
generating means
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KR1020010051756A
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Korean (ko)
Inventor
이왕하
한무호
박태준
이성희
이진희
Original Assignee
주식회사 포스코
재단법인 포항산업과학연구원
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Priority to KR1020010051756A priority Critical patent/KR20030018174A/en
Publication of KR20030018174A publication Critical patent/KR20030018174A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0035—Means for continuously moving substrate through, into or out of the bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/50—Controlling or regulating the coating processes
    • C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
    • C23C2/524—Position of the substrate
    • C23C2/5245—Position of the substrate for reducing vibrations of the substrate

Abstract

PURPOSE: An apparatus for suppressing vibration of strip is provided to improve quality of plating strip by always moving the strip without shaking in a continuous plating line so that thickness of a plating layer coated on the strip is constantly maintained at all time. CONSTITUTION: In an apparatus for suppressing vibration of strip of a continuous plating line comprising a snout, a plating tank in which a strip supplied from the snout is dipped by a plating solution, and an air knife for constantly maintaining the plating solution formed on the surface of the strip passing through the plating tank, the apparatus for suppressing vibration of strip is characterized in that a pair of opposite magnetic force generating means(3) are installed on a path along which the strip passing through the plating tank is moved, thereby pushing both sides of the strip using the same magnetism of the pair of opposite magnetic force generating means so that the strip is prevented from separating by the pair of opposite magnetic force generating means, wherein first and second displacement sensors(4,5) are installed at the inner side of the pair of opposite magnetic force generating means, a comparator(9) is installed at the output end of the first and second displacement sensors to detect difference between values outputted from the first and second displacement sensors, and a device(10) for varying power impressed to coil is installed at the output end of the comparator to regulate power source values(11,12) supplied to the pair of opposite magnetic force generating means according to values outputted from the comparator.

Description

스트립 진동 억제 장치{An apparatus for preventing a strip-vibration}An apparatus for preventing a strip-vibration

본 발명은 스트립 진동을 억제하는 장치에 관한 것으로서, 더욱 상세하게는 제철소의 연속도금 라인에서 스트립의 진동 발생을 억제하여 스트립의 표면에 도금되어지는 도금층의 두께를 일정하게 조정할 수 있도록 하는 스트립 진동을 억제하는 장치에 관한 것이다.The present invention relates to a device for suppressing strip vibration, and more particularly, to suppress strip vibration in a continuous plating line of a steel mill, and to control strip vibration to uniformly adjust the thickness of the plating layer plated on the surface of the strip. It relates to a device for suppressing.

도 1은 일반적인 도금라인을 나타낸 도면으로서, 일반적으로 연속 도금라인은 스나우트(Snout: 20)로부터 제공되어진 스트립(1)이 도금조(21)내로 인입되어진다. 이후 징크롤(Sink roll: 22)을 통과하면서 스트립(1)의 표면에 도금액이 도금되어진다. 이후, 스트립은 에어나이프(13)에 의하여 스트립(1)의 표면에 부착된 도금액의 두께를 조정하게 된다. 도금액의 두께는 에어나이프(13)가 강한 공기의 압력을 이용하여 도금액의 두께를 조정하게 된다. 이때, 스트립(1)의 진동을 억제하기 위하여 고정롤(14)이 스트립(1)을 지지하여 준다.FIG. 1 is a view showing a general plating line, in which a continuous plating line is generally introduced with a strip 1 provided from a snout 20 into a plating bath 21. Thereafter, a plating liquid is plated on the surface of the strip 1 while passing through a sink roll 22. The strip then adjusts the thickness of the plating liquid attached to the surface of the strip 1 by the air knife 13. The thickness of the plating liquid allows the air knife 13 to adjust the thickness of the plating liquid using the pressure of strong air. At this time, the fixing roll 14 supports the strip 1 in order to suppress the vibration of the strip 1.

한편, 상술한 제철소의 연속라인에 있어서 고정롤(14) 사이의 스트립(1)이 기계적인 진동 등 여러가지 원인으로 인하여 진동하고, 경우에 따라서 공진을 통해서 원치 않는 스트립 진동 현상이 생기는 경우가 발생한다.On the other hand, in the above-described continuous line of steelworks, the strip 1 between the fixed rolls 14 vibrates due to various reasons such as mechanical vibration, and in some cases, an unwanted strip vibration phenomenon occurs through resonance. .

이러한 스트립(1)의 진동은 단순한 소음뿐만 아니라 여러가지 정밀 측정장치 표면 조도 측정, 에어나이프(13) 전후의 간격 조절등의 정도를 떨어뜨리고, 용융도금과 같은 라인에 있어서는 정밀한 도금량 부착을 저해하는 원인이 될 수 있다.Vibration of the strip 1 not only reduces noise, but also reduces the degree of surface roughness measurement of various precision measuring apparatuses, and adjusts the space before and after the air knife 13, and causes a loss of precise plating amount adhesion in a line such as hot dip plating. This can be

종래에는 이러한 문제점을 해결하기 위하여 고정롤을 추가로 설치하였다. 그러나, 도금 라인인 경우에는 표면 도금액이 마르지 않은 상태로 추가 고정롤이 가동되면, 제품의 질의 저하만 초래할 수 있다. 또한 종래의 고정롤을 통한 접촉식 진동억제 장치는 진동억제에는 효과가 있을 수 있으나 도금한 표면에 악영향을 주는 문제점이 있다.Conventionally, a fixed roll was additionally installed to solve this problem. However, in the case of the plating line, if the additional fixing roll is operated in a state where the surface plating solution is not dried, only the deterioration of the quality of the product can be caused. In addition, the conventional vibration suppression device through a fixed roll may have an effect on the vibration suppression, but there is a problem that adversely affects the plated surface.

한편, 도금 라인의 스트립(1)의 길이가 길어짐에 따라, 도금 라인의 다른 기계적인 진동 등의 영향으로 앞뒤로 진동하게 되고, 극단적인 경우에 에어나이프(13)에서의 도금량 제어에도 악영향을 주게 되는 문제점이 있다.On the other hand, as the length of the strip 1 of the plating line becomes longer, it vibrates back and forth under the influence of other mechanical vibrations of the plating line, and in an extreme case, adversely affects the plating amount control in the air knife 13. There is a problem.

따라서 비접촉식 제어방식을 이용하면 표면 도금상태에 영향을 주지않으면서 적절히 진동을 억제할 수 있는 장치의 개발이 요망되어져 왔다.Therefore, the use of a non-contact control method has been desired to develop a device that can properly suppress vibration without affecting the surface plating state.

본 발명은 상술한 문제점을 해결하기 위한 것으로서, 연속도금라인에서 스트립이 항상 흔들림 없이 이동하게 하므로서 스트립에 도금되어지는 도금층의 두께를 항상 일정하게 유지하여 도금강판의 품질을 향상할 수 있는 스트립 진동억제 장치를 제공하는 데 그 목적이 있다.The present invention is to solve the above-described problems, the strip vibration suppression that can improve the quality of the plated steel plate by constantly maintaining the thickness of the plated layer to be plated on the strip by constantly moving the strip in the continuous plating line without shaking The object is to provide a device.

상술한 목적은 스나우트와, 상기 스나우트로 부터 공급되어지는 스트립이 도금액에 의하여 잠기어지는 도금조와, 상기 도금조를 통과한 스트립의 표면에 형성된 도금액을 일정하게 유지하기 위한 에어나이프로 구성된 연속도금라인의 스트립 진동억제장치에 있어서, 상기 스트립이 상기 도금조를 통과하여 이동하는 경로에 마주하는 한쌍의 자력발생수단을 설치하므로서 상기 마주하는 한쌍의 자력발생수단이 상기 스트립을 양측에서 동일한 자력으로 밀어주므로서 상기 마주하는 한쌍의자력발생수단에 의하여 상기 스트립의 이탈을 방지하는 스트립 진동 억제 장치에 의하여 달성된다.The above object is a continuous plating line composed of a snout, a plating bath in which a strip supplied from the snout is locked by a plating solution, and an air knife for maintaining a plating solution formed on the surface of the strip passing through the plating bath. In the strip vibration suppression apparatus of the present invention, since the pair of magnetic force generating means facing each other in the path in which the strip passes through the plating bath moves the strip by the same magnetic force on both sides, It is achieved by a strip vibration suppressing device which prevents the strip from being separated by the pair of opposing magnetic force generating means.

또한 본 발명의 목적은 마주하는 한쌍의 자력발생수단 내측에는 제1 및 제2 변위센서가 설치되어지며, 상기 제1및 제2 변위센서의 출력단에는 비교기가 설치되어 상기 제 1및 제2 변위센서로 부터 출력되어진 값의 차이값을 검출하게되며, 상기 비교기의 출력단에는 상기 비교기에서 출력된 값에 따라 상기 마주하는 한쌍의 자력발생수단에 공급되어지는 전원값을 조정할 수 있는 코일인가전원 가변기가 설치되어지는 것을 특징으로 하는 스트립 진동 억제 장치에 의하여 달성된다.In addition, an object of the present invention is the first and the second displacement sensor is installed inside the pair of magnetic force generating means facing, the comparator is installed at the output end of the first and second displacement sensor is the first and second displacement sensor The difference value of the value output from the to detect the difference, the output terminal of the comparator is provided with a coil-applied power supply variable that can adjust the power value supplied to the pair of magnetic force generating means in accordance with the value output from the comparator It is achieved by a strip vibration suppressing device characterized in that.

도 1은 일반적인 도금라인을 나타낸 도면.1 is a view showing a general plating line.

도 2는 본 발명에 의한 스트립 진동 억제장치가 도금라인에 설치된 상태를 나타낸 도면.Figure 2 is a view showing a state in which the strip vibration suppression apparatus according to the present invention is installed in the plating line.

도 3은 본 발명에 의한 스트립 진동 억제장치를 나타낸 도면.Figure 3 is a view showing a strip vibration suppressing apparatus according to the present invention.

도 4는 본 발명에 의한 스트립 진동 억제장치 제어상태를 나타낸 도면.4 is a view showing a control state of the vibration suppressing strip vibration apparatus according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1: 스트립2: 진동억제장치1: strip 2: vibration suppression device

3: 자력발생수단4: 제 1변위센서3: magnetic force generating means 4: first displacement sensor

5: 제 2변위센서6: 스트립 레퍼런스5: second displacement sensor 6: strip reference

7: 스트립 위치 A 8: 스트립 위치 B7: Strip position A 8: Strip position B

9: 비교기 10: 코일인가 전원 가변기(PWM)9: Comparator 10: Coiled Power Supply Variable Voltage (PWM)

11: 전원 A12: 전원 B11: power source A12: power source B

13: 에어나이프 14: 고정롤13: air knife 14: fixed roll

20: 스나우트22: 징크롤20: Snout 22: Jincroll

A: 자력A: magnetic force

첨부된 도면을 참조하여 본 발명의 구성에 대하여 상세히 설명한다.With reference to the accompanying drawings will be described in detail the configuration of the present invention.

도 2는 본 발명에 의한 스트립 진동 억제장치가 도금라인에 설치된 상태를 나타낸 도면이고, 도 3은 본 발명에 의한 스트립 진동 억제장치를 나타낸 도면이고, 도 4는 본 발명에 의한 스트립 진동 억제장치 제어상태를 나타낸 도면으로서, 일반적인 도금라인에 대한 설명은 상술한 설명으로 대신하기로 하고, 이하 본 발명을 상세히 설명하면 다음과 같다.2 is a view showing a state in which the strip vibration suppression apparatus according to the present invention is installed on the plating line, Figure 3 is a view showing the strip vibration suppression apparatus according to the present invention, Figure 4 is a control of the strip vibration suppression apparatus according to the present invention As a view showing the state, a description of the general plating line will be replaced by the above description, and the present invention will be described in detail below.

본 발명은 스트립(1)이 상술한 징크롤(22)을 통과한 후 에어나이프(13)를 통과하는 위치에 마주하는 한쌍의 자력발생수단(3)를 설치한 것으로 요지로 한다. 마주하는 한쌍의 자력발생수단(3)은 유도코일로 이루어져 있으나, 유도코일로 한정하지는 않으며, 자력(A)을 발생할 수 있는 전자석도 가능하다. 상술한 마주하는 한쌍의 자력발생수단(3)과 스트립(1)의 내측에는 각각 제 1및 제 2변위센서(4,5)가 설치되어진다. 상술한 각각의 제 1및 제 2변위센서(4,5)로 부터 검출된 전기신호는 비교기(9)에 입력되어질수 있도록 구성된다. 한편, 비교기(9)의 출력단에는 코일인가 전원 가변기(10)가 연결되어 상기 각각의 자력발생수단(3)에 인가되어지는 전원을 조정할 수 있도록 구성된다.The present invention is based on the fact that the strip 1 is provided with a pair of magnetic force generating means 3 facing the position passing through the air knife 13 after passing through the zinc roll 22 described above. A pair of opposing magnetic force generating means 3 is composed of an induction coil, but is not limited to the induction coil, an electromagnet capable of generating a magnetic force (A) is also possible. First and second displacement sensors 4 and 5 are provided inside the pair of magnetic force generating means 3 and the strip 1 facing each other described above. The electrical signals detected from each of the above-described first and second displacement sensors 4, 5 can be input to the comparator 9. On the other hand, the output terminal of the comparator 9 is connected to the coil applied power supply variable 10 is configured to adjust the power applied to the respective magnetic force generating means (3).

한편, 스트립의 이동시 정상적인 흐름은 스트립이 상기 각각의 제1및 제2변위센서(4,5)사의 중심을 통과하는 것이 정상적이라 하겠다. 그러나 기계적인 장애 또는 스트립라인이 길어짐으로 인하여 스트립이 흔들리는 일이 발생할 수 있다. 이때, 스트립 레퍼런스(6)이 스트립 위치 A(7)에서 스트립 위치 B(8)로 이동할 수 있다. 이후, 각각의 제 1 및 제 2변위센서(4,5)는 스트립이 어느쪽으로 치우쳐 있는지 측정하고, 그 검출한 신호를 비교기(9)로 송신하게 된다. 한편, 비교기(9)에서는 제 1 및 제 2변위센서(4,5)로부터 입력된 신호가 동일하면 스트립의 이동이 정상으로 인식하고 제 1 및 제 2변위센서(4,5)에서 보내온 신호의 차이가 있을 때는 중심에서 이탈된 것으로 인식하게 된다. 이때, 출력되는 값이 (-) 즉 스트립이 스트립위치 B(8)로 기울어진 상태인 경우에는 스트립 위치 A(7)측의 자력발생수단(3: 코일)에 전류를 가하는 전원A(11)의 전류를 즉시 증가하여 반대편으로 밀어준다. 반대로 비교기(9)의 출력이(+), 즉 스트립이 스트립 위치 A(7)로 기울어진 상태인 경우에는 스트립위치 B(8)측의 자력발생수단(3)에 전류를 가하는 전원B(12)의 전류를 즉시 증가하여 반대편으로 밀어준다. 이렇한 제어를 통해서 연속적으로 제어함으로써 비접촉식으로 스트립(1)을 흔들림 없이 항상 중앙으로 이동할 수 있도록 한다. 한편, 양극간의 거리 "W" 는 가능한 크게 유지하여 스트립이 자력에 의하여붙지 않도록 하여야 한다.On the other hand, the normal flow during the movement of the strip is normal that the strip passes through the center of each of the first and second displacement sensors (4, 5). However, mechanical failure or longer stripline may cause the strip to shake. At this time, the strip reference 6 may move from the strip position A 7 to the strip position B 8. Then, each of the first and second displacement sensors 4 and 5 measures which side the strip is biased and transmits the detected signal to the comparator 9. On the other hand, in the comparator 9, if the signals input from the first and second displacement sensors 4 and 5 are the same, the movement of the strip is recognized as normal and the signal transmitted from the first and second displacement sensors 4 and 5 When there is a difference, it is perceived as being out of center. At this time, when the output value is (-), that is, when the strip is inclined to the strip position B (8), the power source A 11 that applies a current to the magnetic force generating means 3 (coil) on the strip position A (7) side. Immediately increase the current of the other side to push. On the contrary, when the output of the comparator 9 is (+), that is, when the strip is inclined to the strip position A (7), the power source B 12 which applies a current to the magnetic force generating means 3 on the strip position B (8) side. Immediately increases the current in the unit to the other side. Continuous control through this control allows the strip 1 to always move to the center without shaking in a non-contact manner. On the other hand, the distance "W" between the anodes should be kept as large as possible to prevent the strip from sticking by magnetic force.

본 발명에 의하여 연속도금라인에서 스트립이 항상 흔들림 없이 이동하게 하므로서 스트립에 도금되어지는 도금층의 두께를 항상 일정하게 유지하여 도금강판의 품질을 향상할 수 있는 우수한 효과가 있다.In accordance with the present invention, the strip is always moved without shaking in the continuous plating line, thereby maintaining a constant thickness of the plating layer to be plated on the strip, thereby improving the quality of the plated steel sheet.

Claims (2)

스나우트와, 상기 스나우트로 부터 공급되어지는 스트립이 도금액에 의하여 잠기어지는 도금조와, 상기 도금조를 통과한 스트립의 표면에 형성된 도금액을 일정하게 유지하기 위한 에어나이프로 구성된 연속도금라인의 스트립 진동억제장치에 있어서,Strip vibration suppression of a continuous plating line consisting of a snout, a plating bath in which the strip supplied from the snout is immersed by a plating solution, and an air knife for constantly maintaining a plating solution formed on the surface of the strip passing through the plating bath. In the apparatus, 상기 스트립이 상기 도금조를 통과하여 이동하는 경로에 마주하는 한쌍의 자력발생수단을 설치하므로서 상기 마주하는 한쌍의 자력발생수단이 상기 스트립을 양측에서 동일한 자력으로 밀어주므로서 상기 마주하는 한쌍의 자력발생수단에 의하여 상기 스트립의 이탈을 방지하는 스트립 진동 억제 장치.The pair of magnetic force generating means facing each other by a pair of magnetic force generating means facing each other in the path through which the strip moves through the plating bath pushes the strip with the same magnetic force on both sides to generate the pair of magnetic force facing each other. Strip vibration suppressing device for preventing the stripping of the strip by means. 제 1항에 있어서The method of claim 1 상기 마주하는 한쌍의 자력발생수단 내측에는 제1 및 제2 변위센서가 설치되어지며, 상기 제1및 제2 변위센서의 출력단에는 비교기가 설치되어 상기 제 1및 제2 변위센서로 부터 출력되어진 값의 차이값을 검출하게되며, 상기 비교기의 출력단에는 상기 비교기에서 출력된 값에 따라 상기 마주하는 한쌍의 자력발생수단에 공급되어지는 전원값을 조정할 수 있는 코일인가전원 가변기가 설치되어지는 것을 특징으로 하는 스트립 진동 억제 장치.First and second displacement sensors are installed inside the pair of opposing magnetic force generating means, and comparators are installed at output ends of the first and second displacement sensors to output values from the first and second displacement sensors. The difference value of the comparator is detected, and the output terminal of the comparator is provided with a coil-applied power supply variable that can adjust the power value supplied to the pair of magnetic force generating means in accordance with the value output from the comparator Strip vibration suppression device.
KR1020010051756A 2001-08-27 2001-08-27 An apparatus for preventing a strip-vibration KR20030018174A (en)

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KR970062351U (en) * 1996-05-10 1997-12-10 Overplating prevention device on the edge of galvanized steel sheet
JPH1053852A (en) * 1996-08-12 1998-02-24 Nisshin Steel Co Ltd Method for adjusting coating weight of plating utilizing electromagnetic force and device therefor
JPH11100651A (en) * 1997-07-30 1999-04-13 Kawasaki Steel Corp Continuous hot dip metal coating device
JP2001040463A (en) * 1999-07-28 2001-02-13 Hitachi Ltd Continuos hot dip metal coating device, and its method

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Publication number Priority date Publication date Assignee Title
KR830005399A (en) * 1981-01-15 1983-08-13 마에다 다다요시 Dust-proofing method and apparatus for strip-shaped conveyed materials
JPH06108220A (en) * 1992-09-29 1994-04-19 Nisshin Steel Co Ltd Method for controlling coating weight of hot-dip metal-coated steel strip by electromagnetic force
KR970062351U (en) * 1996-05-10 1997-12-10 Overplating prevention device on the edge of galvanized steel sheet
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JPH11100651A (en) * 1997-07-30 1999-04-13 Kawasaki Steel Corp Continuous hot dip metal coating device
JP2001040463A (en) * 1999-07-28 2001-02-13 Hitachi Ltd Continuos hot dip metal coating device, and its method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105683072A (en) * 2013-11-04 2016-06-15 康宁精密素材株式会社 Non-contact vibration suppression device and object processing method
CN105683072B (en) * 2013-11-04 2017-10-20 康宁精密素材株式会社 Non-contacting vibration restraining device and object processing method

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