CN117602851A - Metal-plated optical fiber coating device and preparation method of metal-plated optical fiber - Google Patents
Metal-plated optical fiber coating device and preparation method of metal-plated optical fiber Download PDFInfo
- Publication number
- CN117602851A CN117602851A CN202311511799.6A CN202311511799A CN117602851A CN 117602851 A CN117602851 A CN 117602851A CN 202311511799 A CN202311511799 A CN 202311511799A CN 117602851 A CN117602851 A CN 117602851A
- Authority
- CN
- China
- Prior art keywords
- coating
- metal
- optical fiber
- die
- cup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 283
- 239000011248 coating agent Substances 0.000 title claims abstract description 271
- 239000013307 optical fiber Substances 0.000 title claims abstract description 147
- 238000002360 preparation method Methods 0.000 title abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 210
- 239000002184 metal Substances 0.000 claims abstract description 210
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 24
- 239000011701 zinc Substances 0.000 claims description 23
- 239000010453 quartz Substances 0.000 claims description 22
- 229910052725 zinc Inorganic materials 0.000 claims description 21
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 20
- 229910052718 tin Inorganic materials 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 239000007769 metal material Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- 229910052738 indium Inorganic materials 0.000 claims description 13
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 33
- 238000007747 plating Methods 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 17
- 230000005484 gravity Effects 0.000 description 12
- 230000008018 melting Effects 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000002923 metal particle Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000007526 fusion splicing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/42—Coatings containing inorganic materials
- C03C25/46—Metals
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention belongs to the field of optical fiber preparation, and particularly relates to a metal-plated optical fiber coating device and a preparation method of a metal-plated optical fiber. The metal-plated optical fiber coating device comprises a heating device for heating molten metal, a coating cup for metal coating, and an adjusting device for adjusting the position of the coating cup; the side wall of the heating device is connected with the adjusting device, the adjusting device is fixedly provided with a coating cup, and the coating cup is arranged at the right center of the heating device. According to the invention, through actually adjusting the coating cup structure, the height of molten metal in the metal coating process of the bare optical fiber can be stably controlled, the height of the molten metal can be adjusted by adjusting the height of the side wall of the coating die, and the height of the molten metal can be kept unchanged in the metal coating process.
Description
Technical Field
The invention belongs to the field of optical fiber preparation, and particularly relates to a metal-plated optical fiber coating device and a preparation method of a metal-plated optical fiber.
Background
Optical fibers are short for optical fibers, and are optical devices that use the principle of total reflection of light to transmit signals. Since the 1966 'father of optical fiber' Gao proposes that optical fibers can be used for communication transmission, optical fibers and optical fiber technologies have been unprecedented, and the optical fibers and the optical fiber technologies have been widely applied to the fields of communication engineering, aerospace, petrochemical industry, medical treatment, bridge detection, power transmission and the like.
The fiber structure is composed of three parts: a core, a cladding and a coating layer. Wherein the refractive index of the fiber core is greater than the refractive index of the cladding, and the fiber core and the cladding together form a waveguide structure. The coating layer is a protective layer of the optical fiber and plays a role in increasing the mechanical property and the bending resistance of the optical fiber.
The currently mainstream coating layers comprise acrylic resin coating, heat-resistant silica gel coating and polyimide coating. Wherein the acrylic resin coating is most widely applied, and the working temperature is between 40 ℃ below zero and 85 ℃. The heat-resistant silica gel coated optical fiber can be stably used for a long time in an air environment at 200 ℃, and meanwhile, the attenuation added value and the coating weight loss rate are low at high temperature. The polyimide coated optical fiber can be used for a long time in an air atmosphere at 300 ℃, can be used for a short time at 300-400 ℃, and can be kept in use under high-pressure and vacuum conditions. However, for higher temperatures and harsher use environments, organic coatings are no longer suitable and, therefore, higher temperature resistant coatings need to be developed. Metals and alloys generally have relatively high melting points and metal-plated optical fibers can be prepared to meet application requirements.
The metal-plated optical fiber has outstanding advantages: the corrosion resistance and the stress resistance of the metal coating are optimal; can isolate the erosion of water and hydrogen to the inside of the optical fiber; the optical fibers may be fusion-spliced by a metal fusion-splicing method or the like.
The preparation method of the metal-plated optical fiber is classified into an electroless plating method, an electroplating method, a sputtering method, an evaporation method, and a molten metal method. Electroless plating generally has lower accuracy due to the uncontrollable rate of chemical reaction. Electroplating presents the risk of environmental pollution by the plating solution. The sputtering method has better coating quality, but the prepared coating has thin thickness, and the prepared coating with the thickness of micron-scale needs long time. The vapor deposition method has poor process repeatability and large consumption of materials in the vapor deposition process. The above four methods can only produce short-distance metal-plated optical fibers due to low bare fiber strength, equipment limitations, and the like. The molten metal method is currently the most suitable method for preparing long distance metal coated optical fibers.
The core of the metal-plated optical fiber prepared by the molten metal method is a metal coating device. The metal coating apparatus needs to be capable of achieving stable control of the temperature of molten metal and to be capable of achieving highly stable control of the molten metal at the time of metal coating. When the temperature is unstable or the height of the molten metal is unstable, the thickness of the coating is easily uneven, and the quality of the coating is reduced. However, the existing coated optical fiber device can partially realize temperature control, but still has the problems that metal is easy to remain in a coating cup and is difficult to clean, the utilization rate of raw materials is low, the height of molten metal is difficult to keep constant in the metal coating process, wire threading is difficult or the success rate of wire threading is low, and the like.
Disclosure of Invention
In view of the above, the main object of the present invention is to provide a metal-plated optical fiber coating apparatus and a metal-plated optical fiber manufacturing method, which can realize precise control of the height of molten metal in the metal coating process, can keep the height of molten metal constant in the metal coating process, and is convenient for cleaning the residual metal in a coating cup, and has the advantages of high raw material utilization rate, convenient threading and high success rate.
The aim and the technical problems of the invention are realized by adopting the following technical proposal. The invention provides a metal-plated optical fiber coating device, which comprises a heating device for heating molten metal, a coating cup for metal coating, and an adjusting device for adjusting the position of the coating cup; the side wall of the heating device is connected with the adjusting device, the adjusting device is fixedly provided with a coating cup, and the coating cup is arranged at the right center of the heating device.
Further, the metal-plated optical fiber coating device comprises a coating cup seat, a connecting rod and a displacement platform, wherein the adjusting device for adjusting the coating cup position is arranged on the coating cup seat; the cup coating seat is connected with a connecting rod, and the connecting rod is arranged on the displacement platform and is connected with the displacement platform through a screw; the coating cup is arranged on the position, opposite to the coating cup seat, of the heating device.
Further, the foregoing metal-plated optical fiber coating apparatus, wherein the coating cup for metal coating includes an inlet die for guiding the optical fiber, a coating die for effecting metal coating, and a base die for providing liquid metal; the inlet die is connected with the coating die, and the coating die is connected with the substrate die.
Further, in the aforementioned metal-plated optical fiber coating apparatus, the entrance die is provided with an upper through hole allowing the optical fiber to pass therethrough, and the inner wall of the entrance die is provided with a chamfer for guiding the optical fiber to enter.
Further, in the foregoing metal-plated optical fiber coating apparatus, a lower through hole allowing the optical fiber to pass through is provided on the coating die, and a gap allowing the molten metal to flow in is provided on a side wall of the coating die.
Further, in the aforementioned metal-plated optical fiber coating apparatus, the height of the molten metal in the base die is higher than the height of the molten metal in the coating die.
Further, in the aforementioned metal-plated optical fiber coating apparatus, the bottom of the inlet die is connected to the side wall of the coating die to form a gap with a fixed height.
Further, in the foregoing metal-plated optical fiber coating apparatus, the side wall of the coating die is connected to the side wall of the base die, and the molten metal in the base die is completely melted and fills the highly fixed gap.
Further, in the foregoing metal-plated optical fiber coating apparatus, the coating cup is made of a ceramic material selected from one of alumina ceramic and zirconia ceramic.
Further, the foregoing metal-plated optical fiber coating apparatus, wherein the metal is at least one selected from the group consisting of indium, tin, zinc, aluminum, copper, and gold.
The aim and the technical problems of the invention are realized by adopting the following technical proposal. The invention provides a preparation method of a metal-plated optical fiber, which comprises the following steps:
firstly, assembling an inlet die, a coating die and a base die of a coating cup, and then placing a metal material into the base die;
heating the preform rod to 2200 ℃ in a graphite furnace, and adjusting the diameter of the bare optical fiber after the material is melted, and allowing the bare optical fiber to pass through the upper through hole and the lower through hole after the diameter of the bare optical fiber reaches the expected diameter;
heating the metal material by using the control cabinet to enable the metal material to be molten into a liquid state, and enabling the metal material to flow into the coating die from a gap of the side wall of the coating die;
and step four, collecting the metal-plated optical fiber after the temperature of the molten metal reaches a set temperature range and is stable.
Further, in the foregoing method for manufacturing a metal-clad optical fiber, the preform and the bare optical fiber are made of quartz or glass.
Through the technical scheme, the metal-plated optical fiber coating device and the preparation method of the metal-plated optical fiber provided by the invention have the following beneficial effects:
according to the invention, through actually adjusting the coating cup structure, the height of molten metal in the metal coating process of the bare optical fiber can be stably controlled, the height of the molten metal can be adjusted by adjusting the height of the side wall of the coating die, and the height of the molten metal can be kept unchanged in the metal coating process.
The metal-plated optical fiber coating device provided by the invention can realize continuous preparation of metal-plated optical fibers, is simple to operate, easy to thread, high in threading success rate, convenient to clean and recover residual metals in the coating cup, high in raw material utilization rate, and capable of avoiding pollution of the coating cup, so that the coating cup can be reused.
The preparation method of the metal-coated optical fiber is realized by adopting the metal coating device, the utilization rate of raw materials is high, residual metal in a coating cup is convenient to clean, the height of molten metal for metal coating can be accurately controlled, threading is convenient, and the success rate is high. And the prepared metal-plated optical fiber has smooth and uniform surface and no defects such as plating leakage, cracks and the like.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a metal coating apparatus according to the present invention;
FIG. 1A is a schematic view of a heating device of a metal coating apparatus according to the present invention;
FIG. 2 is a schematic view of a coating cup of the metal coating apparatus of the present invention;
FIG. 3 is a scanning electron microscope image of a side-defect galvanized silica fiber prepared in comparative example 1;
FIG. 4 is a scanning electron microscope image of a surface-totally coated galvanized silica fiber prepared in example 3 of the present invention.
In the figure: 110: a heating device; 120: coating a cup; 130: an adjusting device; 131: a cup coating seat; 132: a connecting rod; 133: a displacement platform; 210: coating a cup; 211: an inlet die; 212: coating a die; 213: a base die; 220: an upper through hole; 221: chamfering: 222: and a lower through hole.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the present invention, the following detailed description refers to the specific implementation, the characteristics and the effects of the metal-coated optical fiber coating device and the preparation method of the metal-coated optical fiber according to the present invention, which are provided by the present invention, with reference to the accompanying drawings and the preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features or characteristics of one or more embodiments may be combined in any suitable manner.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having" and any variations thereof in the description of the invention and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.
In the description of embodiments of the present invention, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present invention, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the embodiments of the present invention, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).
In the description of the embodiments of the present invention, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present invention.
In the description of the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
Referring to fig. 1, the present invention provides a metal-clad optical fiber coating apparatus, which includes a heating device 110 for heating molten metal, a coating cup 120 for metal coating, and an adjusting device 130 for adjusting the position of the coating cup; the side wall of the heating device 110 is connected with the adjusting device 130, the adjusting device 130 is provided with a coating cup 120, and the coating cup is arranged at the right center of the heating device 110; the specific structure of the heating device 110 is shown in fig. 1A, and the heating device comprises a metal shell 111, a resistance wire 112, fire-resistant cotton 113 and a control cabinet 114; the fire-resistant cotton 113 and the resistance wire 112 are both adhered to the inside of the metal shell 111, the metal shell 111 is connected with the control cabinet 114 through an electric wire, and the fire-resistant cotton 113 and the resistance wire 112 are adhered into a whole. Wherein, the metal casing 111 supports the overall structure of heating device 110, and resistance wire 112 is used for heating after the circular telegram and makes the molten metal melt, and fire-resistant cotton 113 is used for keeping warm, and switch board 114 is used for adjusting the heating temperature. Wherein the resistance wires 112 are uniformly distributed around the coating cup 120, and can provide a stable temperature field to uniformly heat the molten metal. The side of the metal housing 111 has a hole of 20mm size for the connecting rod 132 to extend into the heating device 110. The adjusting device 130 comprises a coating cup holder 131, a connecting rod 132 and a displacement platform 133. The adjustment device can realize real-time adjustment of the position of the coating cup so as to ensure that the bare optical fiber passes through the center of the coating cup 120. By arranging the coating cup 120 at the center of the heating device 110, the coating cup 120 is uniformly heated from top to bottom from outside to inside, and the temperature field where the coating cup 120 is positioned is stable.
Further, the cup holder 131 and the connecting rod 132 are welded together or directly cold-worked into a whole by using a heat-resistant stainless steel plate, and the connecting rod 132 is disposed on the displacement platform 133 and connected with the displacement platform 133 by a screw.
When metal coating is carried out, the coating cup 120 is arranged on the heating device 110 and is opposite to the coating cup seat 131, and in the process of preparing the metal coated optical fiber, the position of the coating cup seat 131 can be adjusted by adjusting the displacement platform 133.
Referring to fig. 2, the coating cup 120 for metal coating includes an inlet die 211 for guiding an optical fiber, a coating die 212 for implementing metal coating, and a base die 213 for providing liquid metal.
The entrance die 211 is provided with an upper through hole 220 allowing the optical fiber to pass therethrough, and the inner wall of the entrance die 211 is provided with a chamfer 221 for guiding the optical fiber to enter, thereby guiding the bare optical fiber to pass through the entrance die 211.
The coating die 212 is provided with a lower through hole 222 for allowing the optical fiber to pass through, the side wall of the coating die 212 is provided with a gap for allowing molten metal to flow in, and the height of the molten metal can be controlled by changing the height of the side wall. In practice, the height of the side walls can be changed by changing different parts.
Further, the optical fiber passes through the through hole from top to bottom. In practice, the size of the upper through-hole 220 is slightly larger than the size of the lower through-hole 222 to facilitate the passage of the optical fiber therethrough. For example, if 125 μm of optical fiber passes through the through-hole, the upper through-hole may be set to 500 μm and the lower through-hole may be set to 250 μm. If 160 μm of optical fibers pass through the through-holes, the upper through-holes may be set to 600 μm and the lower through-holes may be set to 300 μm.
The base mold 213 is used for providing molten metal, and the height of the molten metal in the base mold 213 is higher than that in the coating mold 212 according to the length of the metal-coated optical fiber, and the calculation formula is as follows:
where M is the mass of metal required to make a length L of the metal-clad fiber, L is the length of the metal-clad fiber, a is the fiber diameter, b is the metal-clad thickness, ρ is the density of the metal. h is the difference between the height of the molten metal in the base die and the height of the molten metal in the coating die. The mass of the added metal can be calculated according to the length of the prepared metal-plated optical fiber and the thickness of the plating.
When molten, the molten metal is forced by gravity into the coating die 212 through the voids in the side walls of the coating die 212. Because the metal is solid initially, the metal becomes liquid after melting, and the metal has certain fluidity, more metal is arranged on two sides, and the metal liquid is high and flows through the gaps of the side walls under the action of gravity. The height of the molten metal in the base die 213 is designed to be slightly higher than that in the coating die 212 in order to ensure that the gap can be filled. In order to ensure that the quality of the molten metal in the substrate die is slightly higher than that of the metal in the coating die, the quality of the molten metal needs to be calculated when the molten metal fills the space of H-2mm, and the height of the molten metal in the outlet die is equal to that of the molten metal in the coating die and is H-2. The calculation formula of the minimum metal mass m required according to the designed dimensions is:
m＝ρ[2π(27 2 -20 2 )+(H-2)π·27 2 ]＝ρπ(729H-800)
wherein H is the height of the upper opening of the coating die, and mm; ρ is the molten metalDensity, g/mm 3 。
In order to ensure that the mass of the molten metal in the substrate die is slightly higher than that of the metal in the coating die, only the mass of the metal placed in the substrate die is required to be larger than the minimum mass m, and m+20g can be taken as the mass of the added metal, so that the height of the molten metal in the substrate die is ensured to be slightly higher than that of the molten metal in the coating die.
The bottom of the inlet die 211 and the side wall of the coating die 212 are connected by a clamping groove to form a gap with a fixed height. The side wall of the coating die 212 and the side wall of the base die 213 are connected through a clamping groove, and the gap with fixed height is filled after the molten metal in the base die 213 is completely melted, so that the constant height of the molten metal in the metal coating process is realized. The height of the molten metal has a great influence on the coating quality. The fluctuation of the height of the molten metal can cause the fluctuation of the coating quality, and under the condition of the same wire drawing speed, the molten metal is too low, so that the phenomena of plating leakage, uneven plating thickness and the like on the surface during coating are easily caused, the quality of a finished product is influenced, and the constant height of the molten metal is required to be ensured. In addition, by replacing the base mold 213 with a different sidewall height, the control of the molten metal height can be achieved. Alternatively, different molds are required to achieve different molten metal heights, but the molten metal height of each set of molds is fixed.
As shown in fig. 2, the height of the molten metal is maintained constant by relying on the bottom of the inlet die 211 and the side wall of the coating die 212, wherein the bottom of the inlet die 211 has a groove with a height of 2mm, and the upper portion of the coating die 212 has a groove with a height of H, and a space with a height of H-2mm is formed in the middle after the both are combined, and this space is used for fixing the constant height of the molten metal. When h=4mm, then the fixed molten metal height is 2mm; the height of the gap is 2mm. When h=6mm, then the fixed molten metal height is 4mm; the height of the gap is 4mm.
In the above technical solution, the coating cup is made of ceramic materials, including but not limited to alumina ceramic and zirconia ceramic. Because the metal and the ceramic do not react, the phenomenon that the metal is stuck to the bottom is avoided, and therefore the residual metal can be cleaned. After the molten metal passes through the coating cup hole, the long-time heating reaction can cause the blocking of the coating cup hole, and the coating cup is prevented from being polluted because the coating cup is made of ceramic materials.
In particular, the coating cup 120 has the advantages that:
the coating cup 120 can achieve a constant level of molten metal during the metal coating process.
The coating cup 120 is made of ceramic material, and has good heat resistance, compared with a coating cup made of metal material, the coating cup cannot be used because the coating cup cannot be oxidized. For example, alumina ceramic has a melting point of about 2054, zirconia ceramic has a melting point of about 2715, and is much higher than 304 stainless steel (melting point 1398-1454).
The coating cup 120 does not contain a threaded structure or a hollow structure, and is convenient to process and manufacture.
The coating cup 120 is convenient to disassemble, and can be cleaned after the metal coating is completed and after the whole coating cup is cooled, so that the metal can be recycled.
The upper and lower through holes of the coating cup 120 are concentric, the arc angle (chamfer) design of the inlet die is convenient for threading, and the threading success rate is high.
Threading is easy because the design of chamfer is added on the side wall of the inlet die, and the fiber can be guided, thereby realizing success rate. The cleaning of the residual metal is caused by the fact that the metal does not react with the ceramic, and the phenomenon that the metal sticks to the bottom is avoided. The pollution of the coating cup is avoided, and the coating cup hole is blocked due to long-time heating reaction after the metal liquid passes through the coating cup hole.
Referring to fig. 1, the present invention further provides a method for preparing a metal-plated optical fiber, comprising the following steps:
step one, the inlet die 211, the coating die 212 and the base die 213 of the coating cup are assembled from top to bottom according to fig. 2, and the inlet die 211, the coating die 212 and the base die 213 are fixedly connected through clamping grooves. After which the metal material is placed in the base mold 213.
And step two, heating the prefabricated rod to at least 2200 ℃ in a graphite furnace, and adjusting the diameter of the bare optical fiber after the material is melted, and allowing the bare optical fiber to pass through the upper through hole 220 and the lower through hole 222 after the diameter of the bare optical fiber reaches the expected diameter. Since the softening point of quartz is 2200 ℃, heating to at least 2200 ℃ is only required. The desired filament diameter described above is typically 125 microns for silica fibers, considering that the device is approximately 125.+ -.3 microns. However, the fiber can be practically adjusted according to the requirements, for example, 125-180 microns, because the quartz fiber generally has the wire diameter requirement for the bare fiber, and the bare fiber is coated after the wire diameter requirement is met.
Step three, the metal material is heated to its melting point by the control cabinet 114, melted into a liquid state, and flowed into the coating die 212 from the gap of the side wall of the coating die 212. Wherein some gaps are left in the side walls of the inlet of the coating die 212 in order to allow the molten metal to smoothly flow into the coating die 212. The purpose of this design is to add metal particles of sufficient mass to avoid contact of the fiber with the metal particles after the fiber passes through the coating cup, causing the metal particles to wear the fiber and thereby fracture the fiber. The design can lead the molten metal to be contacted with the optical fiber after melting, and the liquid contact can not basically affect the optical fiber. The melting point of different metals is different, for example, the melting point of In is 160, and the melting point of DEG C Zn is 420. DEG C
Step four, when the temperature of the molten metal reaches a set temperature range, for example, the In preparation temperature can be 160 DEG C170 DEG C180; the preparation temperature of the Zn can be 420 DEG, 430 DEG, 440 DEG, and after the temperature is stabilized, the metal-coated optical fiber is recovered. The phenomena of incomplete coating and uneven coating thickness easily occur due to unstable temperature, and the coating can be collected after the surface is completely coated through observation by a microscope.
In practice, the type of metallic material may include, but is not limited to, at least one of indium, tin, zinc, aluminum, copper, and gold.
In addition, the preform and the bare fiber material may be quartz or glass.
The invention will be further described with reference to specific examples, which are not to be construed as limiting the scope of the invention, but rather as falling within the scope of the invention, since numerous insubstantial modifications and adaptations of the invention will now occur to those skilled in the art in light of the foregoing disclosure.
Unless otherwise indicated, materials, reagents, and the like referred to below are commercially available products well known to those skilled in the art; unless otherwise indicated, the methods are all methods well known in the art. Unless otherwise defined, technical or scientific terms used should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The following are the test methods according to the invention in examples 1-3 and comparative examples 1-2, in relation to the performance parameters:
(1) The surface quality of the metal coating is observed by a microscope or a scanning electron microscope, and the metal coating on the surface of the optical fiber is complete and has no defects, so that the use requirement can be met.
(2) And (3) the uniformity of the metal coating, wherein the cross section is enlarged by a scanning electron microscope, the boundary between the metal coating and the quartz optical fiber is observed, and the uniformity of the coating is observed.
Example 1
Taking tin as an example of a coating material, a specific embodiment of the preparation method of the metal-plated optical fiber of the present invention is as follows:
step one: and (3) completing the assembly of the coating cup, placing the coating cup in the middle of a coating cup seat, and placing the metal tin into a base mold. The calculation formula is thatThe density of the substituted metal tin and the height of the molten metal are required to be calculated. For metallic tin, ρ=7.29 g/cm 3 When h=6 mm, the height of the molten metal was 4mm, and the mass of the metallic tin was 81.85g. In order to ensure that the height of the molten metal is constant in the wire drawing process, the mass of the molten metal filled into the coating cup is 101.85g.
Step two: the quartz optical fiber preform is placed in a graphite furnace and heated to 2200 ℃, the head of the preform is heated and softened in a central high temperature zone (the temperature is 2200 ℃) and a stub bar is formed under the action of gravity. The stub bar descends away from the graphite furnace with gravity. The stub bar was cut with pliers and drawn into a bare fiber having a wire diameter of 125 μm, and the bare fiber was passed through a metal coating cup.
Step three: and heating the coating cup to 240 ℃ by a heating device, and enabling the tin liquid to be in contact with the quartz optical fiber so as to be solidified on the surface of the quartz optical fiber, thereby forming a tin coating. And collecting the tin-coated optical fiber after the tin liquid is completely melted and the temperature is stabilized at 240 ℃.
Through the actual adjustment cup structure of scribbling for the molten metal height when bare optical fiber carries out the metal coating can obtain stable control, can adjust the molten metal height through the coating mould of change different lateral wall heights, and can realize that the molten metal height keeps unchanged in the metal coating process. The device can realize the continuous preparation of metal coating optic fibre, easy operation, and it is easy to wear the silk, and it is high to wear the silk success rate to be convenient for clear up the recovery to scribble the residual metal in the cup, the raw materials high-usage can avoid scribbling the cup and polluted, thereby make scribble the cup and can used repeatedly. The preparation method of the metal-coated optical fiber is realized by adopting the metal coating device, the utilization rate of raw materials is high, residual metal in a coating cup is convenient to clean, the height of molten metal used for metal coating can be accurately controlled, threading is convenient, and the success rate is high.
Example 2
The difference between this example and example 1 is that indium is changed as the metal plating coating material, the bare fiber diameter is kept unchanged, and the metal plating optical fiber with completely coated surface and uniform plating can be prepared by only adjusting the height of the molten metal to 2mm.
Taking indium as an example of a coating material, a specific embodiment of the preparation method of the metal-plated optical fiber of the present invention is as follows:
step one: and (3) completing the assembly of the coating cup, placing the coating cup in the middle of a coating cup seat, and placing the metal indium into a base mold. The calculation formula is thatIt is necessary to calculate the density of indium and the height of the molten metal. For metallic indium, ρ=7.31 g/cm 3 When h=4 mm, the height of the molten metal was 2mm, and the mass of the indium metal was 48.59g. To ensure a constant level of molten metal, the mass of molten metal charged into the coating cup was 68.59g.
Step two: the quartz optical fiber preform is placed in a graphite furnace and heated to 2200 ℃, the head of the preform is heated and softened in a central high-temperature zone (the temperature is 2200 ℃) and a stub bar is formed under the action of gravity. The stub bar descends away from the graphite furnace with gravity. The bare fiber of 125 μm after the stub bar was cut with pliers, and the bare fiber was passed through a metal coating cup.
Step three: and heating the coating cup to 160 ℃ by a heating device, and enabling the indium liquid to be in contact with the quartz optical fiber so as to be solidified on the surface of the quartz optical fiber, thereby forming an indium coating. And collecting the indium-coated optical fiber after the indium liquid is completely melted and the temperature is stabilized at 160 ℃.
Example 3
The difference between this example and example 1 is that zinc is replaced as the metal plating coating material, the height of the molten metal is kept unchanged, and only the bare fiber diameter is adjusted to 160 μm, so that a metal plating optical fiber with completely coated surface and uniform plating can be prepared.
Taking zinc as an example of a coating material, a specific embodiment of the preparation method of the metal-plated optical fiber of the present invention is as follows:
step one: and (3) completing the assembly of the coating cup, placing the coating cup in the middle of a coating cup seat, and placing the metal zinc into a base mold. The calculation formula is thatThe density of the substituted zinc and the height of the molten metal are calculated. For metallic zinc, ρ=7.13 g/cm 3 When h=6 mm, the height of the molten metal was 4mm, and the mass of the metallic zinc was 80.06g. In order to ensure the constant height of the molten metal, the mass of the molten metal filled into the coating cup is 100.06g.
Step two: the quartz optical fiber preform is placed in a graphite furnace and heated to 2200 ℃, the head of the preform is heated and softened in a central high-temperature zone (the temperature is 2200 ℃) and a stub bar is formed under the action of gravity. The stub bar descends away from the graphite furnace with gravity. The bare fiber 160 μm after the stub bar was cut with pliers and passed through a metal coating cup.
Step three: the coating cup is heated to 420 ℃ by a heating device, and the zinc liquid is contacted with the quartz optical fiber so as to be solidified on the surface of the quartz optical fiber, so that a zinc coating is formed. And collecting the zinc-coated optical fiber after the zinc liquid is completely melted and the temperature is stabilized at 420 ℃.
Comparative example 1
The difference between this comparative example and example 3 is that the coating apparatus of this comparative example uses not ceramic material as the coating cup material but metal material as the coating cup material (the rest is the same as example 3), resulting in clogging of the coating cup hole after the end of the preparation and difficult cleaning of the residual metal in the coating cup.
Taking zinc as an example of a coating material, the comparative example is specifically:
step one: the coating is carried out by using a cylindrical stainless steel coating cup with the diameter of the base being 4mm, the height of the side wall being 30mm and the wall thickness being 3 mm. Metallic tin is placed in a base mold. The calculation formula is thatIt is necessary to calculate the density of the zinc metal and the height of the molten metal. For metallic tin, ρ=7.13 g/cm 3 When the height H of the molten metal was 4mm, the mass of the metallic tin was 35.84g.
Step two: the quartz optical fiber preform is placed in a graphite furnace and heated to 2200 ℃, the head of the preform is heated and softened in a central high-temperature zone (the temperature is 2200 ℃) and a stub bar is formed under the action of gravity. The stub bar descends away from the graphite furnace with gravity. The stub bar was cut with pliers and drawn into a bare fiber having a wire diameter of 160 μm, and the bare fiber was passed through a metal coating cup.
Step three: and heating the coating cup to 420 ℃ by a heating device, and enabling the zinc liquid to be in contact with the quartz optical fiber so as to be solidified on the surface of the quartz optical fiber, thereby forming a zinc coating. And collecting the zinc-coated optical fiber after the zinc liquid is completely melted and the temperature is stabilized at 420 ℃.
Comparative example 2
The difference between this comparative example and example 1 is that the coating apparatus of this comparative example does not use a ceramic material coating cup (the rest is the same as example 1) with a reasonable structure to perform metal coating, resulting in gradual decrease of the height of the molten metal with the preparation of the metal-plated optical fiber, and in the occurrence of surface skip plating and plating unevenness in the later stage.
Taking tin as an example of the coating material, this comparative example is specifically:
step one: the coating is carried out by using a cylindrical ceramic coating cup with the diameter of the base being 4mm, the height of the side wall being 30mm and the wall thickness being 3 mm. Metallic tin is placed in a base mold. The calculation formula is that
The density of the substituted metal tin and the height of the molten metal are required to be calculated. For tin, ρ=7.29 g/cm 3 When the height H of the molten metal was 4mm, the mass of the metallic tin was 36.64g.
Step two: the quartz optical fiber preform is placed in a graphite furnace and heated to 2200 ℃, the head of the preform is heated and softened in a central high-temperature zone (the temperature is 2200 ℃) and a stub bar is formed under the action of gravity. The stub bar descends away from the graphite furnace with gravity. The stub bar was cut with pliers and drawn into a bare fiber having a wire diameter of 125 μm, and the bare fiber was passed through a metal coating cup.
Step three: and heating the coating cup to 240 ℃ by a heating device, and enabling the tin liquid to be in contact with the quartz optical fiber so as to be solidified on the surface of the quartz optical fiber, thereby forming a tin coating. And collecting the tin-coated optical fiber after the tin liquid is completely melted and the temperature is stabilized at 240 ℃.
The coated optical fiber products obtained in examples 1-3 and comparative examples 1-2 of the present invention were tested and the test results are shown in Table 1.
Wherein, the coating cup Kong Wanhao/is blocked, whether metal residues exist or not is visually observed, and after the preparation of the metal coating optical fiber is finished, whether the holes of the coating cup are blocked or not is observed, and whether metal liquid residues exist in the coating cup or not is observed. The height of the molten metal can be directly judged according to the design of the coating cup, the cylindrical coating cup of the coating device of the comparative example 1 can gradually decrease along with the consumption of the molten metal, and the height of the molten metal of the coating cup of the metal coating device can be kept constant. The integrity and uniformity of the coating are observed by a scanning electron microscope, the accelerating voltage is 15KV, the magnification is 500 times, and whether the surface is uneven or not is judged by observing the existence of metal plating leakage/coating. The zinc-plated quartz optical fiber prepared in comparative example 1 is shown in fig. 3, and the zinc plating layer on the surface of the optical fiber is uneven; the zinc-plated silica fiber prepared in example 3 is shown in fig. 4, and the zinc plating layer on the surface of the metal-plated silica fiber is complete, smooth and uniform. Since it is difficult to secure a constant level of the molten metal in the coating cup of the coating apparatus of comparative example 1, the level of the molten metal is lowered with the extension of the preparation time, and thus a plating leakage phenomenon occurs on the surface of the metal-plated optical fiber. The coating cup of the metal-plated optical fiber coating device of the embodiment 3 has constant height of the metal liquid and stable temperature field, and the metal plating on the surface of the prepared metal-plated optical fiber is complete, smooth and uniform, and has no phenomena of plating leakage and uneven thickness.
TABLE 1
| Coating cup hole | Metal residue | Height of molten metal | Integrity of coating | Uniformity of coating | |
| Example 1 | Intact (good) | Without any means for | Constant | Intact (good) | Uniformity of |
| Example 2 | Intact (good) | Without any means for | Constant | Intact (good) | Uniformity of |
| Example 3 | Intact (good) | Without any means for | Constant | Intact (good) | Uniformity of |
| Comparative example 1 | Blockage of | Has the following components | Gradually decrease | With missing plating | Non-uniformity of |
| Comparative example 2 | Intact (good) | Without any means for | Gradually decrease | With missing plating | Non-uniformity of |
As can be seen from the data in Table 1, the metal-plated optical fiber coating device and the metal-plated optical fiber preparation method in the embodiments 1-3 of the present invention can ensure that the holes of the coating cup are intact and no metal residue exists in the coating cup, and the obtained metal-plated optical fiber coating is complete and uniform for bare optical fibers with different types of metals and different wire diameters due to stable temperature and constant height of the molten metal during coating. Comparative examples 1-2 the metal-plated optical fiber not using the metal coating apparatus of the present invention was subject to the occurrence of the phenomena of missing plating and uneven plating due to the reduced height of the metal liquid, and the coating cup using the metal material had the phenomena of clogging of the coating cup hole, and metal residue.
The technical features of the claims and/or the description of the present invention may be combined in a manner not limited to the combination of the claims by the relation of reference. The technical scheme obtained by combining the technical features in the claims and/or the specification is also the protection scope of the invention.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A metal-plated optical fiber coating device, which is characterized by comprising a heating device for heating molten metal, a coating cup for metal coating, and an adjusting device for adjusting the position of the coating cup; the side wall of the heating device is connected with the adjusting device, a coating cup is placed on the adjusting device, and the coating cup is arranged at the right center of the heating device.
2. The metal-plated optical fiber coating apparatus of claim 1, wherein the adjusting means for adjusting the position of the coating cup comprises a coating cup holder, a connecting rod, and a displacement platform; the cup coating seat is connected with a connecting rod, and the connecting rod is arranged on the displacement platform and is connected with the displacement platform through a screw; the coating cup is arranged on the position, opposite to the coating cup seat, of the heating device.
3. The metal-plated optical fiber coating apparatus of claim 1, wherein the coating cup for metal coating comprises an inlet die for guiding an optical fiber, a coating die for effecting metal coating, and a base die for providing liquid metal; the inlet die is connected with the coating die, and the coating die is connected with the substrate die.
4. A metal-plated optical fiber coating apparatus according to claim 3, wherein the entrance die is provided with an upper through hole allowing the optical fiber to pass therethrough, and the inner wall of the entrance die is provided with a chamfer for facilitating the introduction of the optical fiber; the coating die is provided with a lower through hole allowing the optical fiber to pass through, and the side wall of the coating die is provided with a gap allowing molten metal to flow in.
5. The metal-plated optical fiber coating apparatus of claim 3, wherein the level of the molten metal in the base die is higher than the level of the molten metal in the coating die; the bottom of the inlet die is connected with the side wall of the coating die to form a gap with a fixed height.
6. The metal-plated optical fiber coating apparatus of claim 1, wherein the side walls of the coating die and the side walls of the base die are connected, and the liquid metal in the base die is completely melted to fill the highly-fixed gap.
7. The metal-plated optical fiber coating apparatus of claim 1, wherein the coating cup is made of a ceramic selected from one of alumina ceramic and zirconia ceramic.
8. The metal-plated optical fiber coating apparatus of claim 1, wherein the metal is selected from at least one of indium, tin, zinc, aluminum, copper, and gold.
9. A method of making a metal-clad optical fiber comprising the steps of:
firstly, assembling an inlet die, a coating die and a base die of a coating cup, and then placing a metal material into the base die;
heating the preform rod to 2200 ℃ in a graphite furnace, and adjusting the diameter of the bare optical fiber after the material is melted, and allowing the bare optical fiber to pass through the upper through hole and the lower through hole after the diameter of the bare optical fiber reaches the expected diameter;
heating the metal material by using the control cabinet temperature control system to enable the metal material to be molten into a liquid state, and enabling the metal material to flow into the coating die from a gap of the side wall of the coating die;
and step four, collecting the metal-plated optical fiber after the temperature of the molten metal reaches a set temperature range and is stable.
10. The method of manufacturing a metal-clad optical fiber according to claim 9, wherein the preform and the bare optical fiber are made of quartz or glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311511799.6A CN117602851A (en) | 2023-11-14 | 2023-11-14 | Metal-plated optical fiber coating device and preparation method of metal-plated optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311511799.6A CN117602851A (en) | 2023-11-14 | 2023-11-14 | Metal-plated optical fiber coating device and preparation method of metal-plated optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117602851A true CN117602851A (en) | 2024-02-27 |
Family
ID=89945357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311511799.6A Pending CN117602851A (en) | 2023-11-14 | 2023-11-14 | Metal-plated optical fiber coating device and preparation method of metal-plated optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117602851A (en) |
-
2023
- 2023-11-14 CN CN202311511799.6A patent/CN117602851A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4145200A (en) | Production of optical glass fibers | |
| JP4673275B2 (en) | Method for producing sheet glass by fusion downdraw method | |
| US10189738B2 (en) | Bushing with ribbed tip plate | |
| US20170240450A1 (en) | Induction melter for glass melting and systems and methods for controlling induction-based melters | |
| CN112142295A (en) | Platinum channel suitable for advanced electronic display glass | |
| CN103193398A (en) | Preparation method of high-temperature-resistant optical fiber by carrying out high-speed drawing forming once | |
| JP2012162422A (en) | Method for manufacturing glass article and glass melting furnace | |
| EP0082642A1 (en) | Method and apparatus for producing tubular glass article | |
| RU2463263C2 (en) | Device and method for making fibers | |
| EP0471152B1 (en) | Method of forming glass articles | |
| CS254330B2 (en) | Device for aerosol powder formation from liquid alloy | |
| CA2661088A1 (en) | Bushing assembly having cooling support fins | |
| KR101491547B1 (en) | Glass-coated wires and methods for the production thereof | |
| CN117602851A (en) | Metal-plated optical fiber coating device and preparation method of metal-plated optical fiber | |
| EP1680369B1 (en) | Danner pipe | |
| WO2020157769A1 (en) | Method for drawing an optical fibre using rod-in-cylinder technique | |
| CN116514388A (en) | Wire drawing device and wire drawing method for quartz glass coarse rod | |
| CN111136229A (en) | Crystallizer copper pipe water jacket integrated configuration | |
| US3589879A (en) | Device for supplying glass melt from the feeder of a glass furnace into the glass fiber formation zone | |
| JP2020528394A (en) | Methods and equipment for adjustable heat transfer with glass ribbon | |
| JP2021504279A (en) | Glass manufacturing equipment and glass manufacturing method including heat shield | |
| CN1073972C (en) | Cooling device used in manufacturing of optical fiber prefabricated member | |
| RU2793313C1 (en) | Method for manufacturing a device for producing glass or basalt fibre | |
| EP1461293B1 (en) | A method and a device in the manufacture of an optical fibre | |
| Koch et al. | Design and manufacture of bushings for glass fibre production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |