KR20220108657A - Multi-layer structure for manufacturing self-lubricating bushing - Google Patents

Multi-layer structure for manufacturing self-lubricating bushing Download PDF

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KR20220108657A
KR20220108657A KR1020210011900A KR20210011900A KR20220108657A KR 20220108657 A KR20220108657 A KR 20220108657A KR 1020210011900 A KR1020210011900 A KR 1020210011900A KR 20210011900 A KR20210011900 A KR 20210011900A KR 20220108657 A KR20220108657 A KR 20220108657A
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South Korea
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laminated structure
self
manufacturing
bushing
carbon steel
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KR1020210011900A
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Korean (ko)
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이원석
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이원석
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Priority to KR1020210011900A priority Critical patent/KR20220108657A/en
Publication of KR20220108657A publication Critical patent/KR20220108657A/en
Priority to KR1020230161678A priority patent/KR20240007886A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/18Layered products comprising a layer of metal comprising iron or steel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/26Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C37/00Cooling of bearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/26Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
    • B32B2037/268Release layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/06Coating on the layer surface on metal layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/20Inorganic coating
    • B32B2255/205Metallic coating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00Shaping
    • F16C2220/02Shaping by casting
    • F16C2220/08Shaping by casting by compression-moulding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86Optimisation of rolling resistance, e.g. weight reduction 

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A layered structure for manufacturing a self-lubricating bushing is disclosed. The layered structure for manufacturing a self-lubricating bushing according to the present invention includes a carbon steel plate, a bronze sintered layer formed by applying and sintering bronze powder on the carbon steel plate, and a Teflon film disposed on the bronze sintered layer. The layered structure is disposed between a pair of lower and upper molds, and integrated by pressing the molds at a set pressure and temperature for a predetermined time. According to the present invention, the bronze sintered layer and Teflon film are integrated into one body and then used in the manufacture of the bushing. As a result, the manufactured bushing can be self-lubricated due to low friction and non-lubricating characteristics of the Teflon without additional surface coating or lubricant while securing certain durability that can respond to external impact or deformation prevention by the carbon steel plate.

Description

자기윤활 부싱을 제조하기 위한 적층구조체{MULTI-LAYER STRUCTURE FOR MANUFACTURING SELF-LUBRICATING BUSHING}Multilayer structure for manufacturing self-lubricating bushings

본 발명은 자기윤활 부싱을 제조하기 위한 적층구조체에 관한 것으로, 보다 상세하게는, 표면 코팅이나 윤활유의 제공없이도 자체적으로 저마찰 및 무윤활 특성을 확보할 수 있는 자기윤활 부싱을 제조하기 위한 적층구조체에 관한 것이다.The present invention relates to a laminated structure for manufacturing a self-lubricating bushing, and more particularly, to a laminated structure for manufacturing a self-lubricating bushing that can secure low friction and non-lubricating properties by itself without surface coating or provision of lubricating oil. is about

일반적으로, 모든 기계에는 상대적인 슬라이딩 또는 롤링 동작을 포함하는 일종의 움직이는 부품이 설치되게 된다. 상대 운동의 예로는 공작 기계와 같은 선형 슬라이딩 운동과 자동차 바퀴와 같은 회전 운동이 있다.In general, all machines will be equipped with some sort of moving part that involves a relative sliding or rolling motion. Examples of relative motion are linear sliding motion, such as a machine tool, and rotational motion, such as a car wheel.

부싱은 원통형 기계 부품으로 샤프트를 지지하는데 사용되는 독립적인 부품으로서 단일 독립 부품 장치라는 점을 제외하면 기술적으로 베어링과 동일하다.A bushing is a cylindrical mechanical part that is technically identical to a bearing, except that it is a single independent part device used to support a shaft.

이러한 부싱은 주로 기계 부품 간의 마찰과 마모를 줄이기 위해 어셈블리의 지지 부품으로 널리 사용되고 있으며, 특히 차량 서스펜션 시스템에 적용되고 있다.These bushings are widely used as support parts of assemblies to reduce friction and wear between mechanical parts, and are particularly applied to vehicle suspension systems.

그러나, 종래기술에 따른 부싱은 기계 부품 간의 마찰과 마모를 줄이기 위해 표면에 화학약품을 특수 코팅하거나 또는 윤활유를 제공함으로써 부식이나 표면 손상을 초래하여 안정적인 저마찰과 저마모를 확보할 수 없는 구조적인 문제점이 있다.However, the bushing according to the prior art causes corrosion or damage to the surface by coating a special chemical on the surface or providing lubricating oil to reduce friction and abrasion between mechanical parts. There is a problem.

이에 따라, 차량 서스펜션 시스템에 적용되는 샤프트의 지지시 별도의 표면 코팅이나 윤활유의 제공없이도 저마찰 및 무윤활 특성을 확보할 수 있는 부싱의 개발이 절실히 요구되고 있는 실정이다.Accordingly, there is an urgent need to develop a bushing capable of securing low friction and no lubrication characteristics without a separate surface coating or lubricating oil when supporting a shaft applied to a vehicle suspension system.

KR 등록특허공보 제10-1805222호(등록일자 2017년11월29일)KR Registered Patent Publication No. 10-1805222 (Registration date: November 29, 2017)

본 발명의 기술적 과제는, 화학약품을 이용한 표면 코팅이나 윤활유의 제공없이도 자체적으로 저마찰 및 무윤활 특성을 확보할 수 있는 자기윤활 부싱을 제조하기 위한 적층구조체를 제공하는 것이다.It is an object of the present invention to provide a laminated structure for manufacturing a self-lubricating bushing capable of ensuring low friction and non-lubricating properties by itself without surface coating using chemicals or provision of lubricating oil.

본 발명이 이루고자 하는 기술적 과제는 이상에서 언급한 기술적 과제로 제한되지 않으며, 언급되지 않은 또 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

상기 기술적 과제는, 자기윤활 부싱을 제조하기 위한 적층구조체로서, 상기 적층구조체는 탄소강판과, 상기 탄소강판 위에 청동분을 도포하고 소결시켜 형성되는 청동 소결층 및 상기 청동 소결층 위에 배치되는 테프론 필름을 포함하고, 한 쌍의 하부금형과 상부금형 사이에 상기 적층구조체를 배치하고, 설정된 압력 및 온도로 일정시간 가압하여 일체화되는 것을 특징으로 한다.The technical problem is a laminated structure for manufacturing a self-lubricating bushing, wherein the laminated structure is a carbon steel sheet, a bronze sintered layer formed by coating and sintering bronze powder on the carbon steel sheet, and a Teflon film disposed on the bronze sintered layer Including, arranging the laminated structure between the pair of lower molds and upper molds, characterized in that it is integrated by pressing for a predetermined time at a set pressure and temperature.

상기 적층구조체는, 상기 하부금형 및 상부금형에 의해 100Mpa 이하의 압력 및 400℃ 이하의 온도 조건에서 30분 이하로 가압되어 형성되는 것을 특징으로 한다.The laminated structure is characterized in that it is formed by being pressurized by the lower mold and the upper mold for 30 minutes or less at a pressure of 100 Mpa or less and a temperature of 400° C. or less.

상기 적층구조체는, 상기 하부금형 및 상부금형에 의해 가압된 후, 250℃ 이하의 온도로 냉각되는 것을 특징으로 한다.The laminated structure, after being pressed by the lower mold and the upper mold, is characterized in that it is cooled to a temperature of 250 ℃ or less.

상기 적층구조체는, 자연냉각 방식, 송풍팬에 의한 송풍방식 및 에어컨에 의한 강제냉각 방식 중 어느 하나의 냉각방식으로 냉각되는 것을 특징으로 한다.The laminated structure is characterized in that it is cooled by any one of a natural cooling method, a blowing method by a blowing fan, and a forced cooling method by an air conditioner.

상기 하부금형 및 상부금형의 내부에는 상기 적층구조체를 설정온도로 가열하기 위한 발열체가 설치되는 것을 특징으로 한다.A heating element for heating the laminated structure to a set temperature is installed inside the lower mold and the upper mold.

상기 탄소강판의 두께는 5mm 이하이고, 상기 청동 소결층의 두께는 3mm 이하이며, 상기 테프론 필름의 두께는 5mm 이하인 것을 특징으로 한다.The thickness of the carbon steel sheet is 5mm or less, the thickness of the bronze sintered layer is 3mm or less, and the thickness of the Teflon film is 5mm or less.

상기 적층구조체는, 상기 테프론 필름 위에 배치되는 스테인리스 재질의 이형필름을 더 포함하고, 상기 이형필름은 부싱의 제조공정으로 투입시 분리되는 것을 특징으로 한다.The laminated structure further includes a release film made of a stainless material disposed on the Teflon film, and the release film is characterized in that it is separated when inputted to the manufacturing process of the bushing.

본 발명에 의하면, 탄소강판, 청동 소결층 및 테프론 필름의 적층 구조에 의해 일체화되도록 형성된 후 부싱의 제조에 사용됨으로써, 부싱은 탄소강판에 의해 외부 충격 또는 변형 방지에 대응할 수 있는 일정한 내구성을 확보하면서도 테프론 필름에 의해 별도의 표면 코팅이나 윤활유의 제공없이도 저마찰 및 무윤활 특성에 의해 자기윤활이 가능할 수 있는 유용한 효과를 갖는다.According to the present invention, by being integrally formed by the laminated structure of the carbon steel sheet, the bronze sintered layer and the Teflon film and then used for the manufacture of the bushing, the bushing secures a certain durability that can cope with external impact or deformation prevention by the carbon steel sheet. The Teflon film has a useful effect that self-lubrication is possible due to its low friction and non-lubricating properties without a separate surface coating or provision of lubricating oil.

그리고 청동 소결층에 의해 탄소강판과 테프론 필름의 견고한 접착성을 확보함으로써, 부싱의 사용과정에서 샤프트 등의 회전체에 의한 테프론 필름의 분리를 방지할 수 있는 유용한 효과도 갖는다.And by securing the strong adhesion between the carbon steel sheet and the Teflon film by the bronze sintered layer, it also has a useful effect of preventing the separation of the Teflon film by a rotating body such as a shaft in the process of using the bushing.

도 1은 본 발명에 따른 자기윤활 부싱을 제조하기 위한 적층구조체를 보인 단면도이다.
도 2 내지 도 4는 본 발명에 따른 적층구조체의 제조공정을 순서대로 보인 공정도이다.
1 is a cross-sectional view showing a laminated structure for manufacturing a self-lubricating bushing according to the present invention.
2 to 4 are process diagrams sequentially showing the manufacturing process of the laminated structure according to the present invention.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예들을 상세하게 설명하면 다음과 같다. 다만, 본 발명을 설명함에 있어서, 이미 공지된 기능 혹은 구성에 대한 설명은 본 발명의 요지를 명료하게 하기 위하여 생략하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

도 1을 참조하면, 본 발명에 따른 자기윤활 부싱을 제조하기 위한 적층구조체는 탄소강판(10), 청동 소결층(20)과, 그리고 테프론 필름(30)을 포함한다.Referring to FIG. 1 , a laminated structure for manufacturing a self-lubricating bushing according to the present invention includes a carbon steel plate 10 , a sintered bronze layer 20 , and a Teflon film 30 .

탄소강판(10)은 부싱의 외부 표면을 형성하도록 마련되는 구성이다. 즉, 탄소강판(10)은 부싱의 외부표면을 형성하며 이에 따라 부싱은 외부 충격 또는 변형 방지에 대응할 수 있는 일정한 내구성을 확보할 수 있게 된다.The carbon steel plate 10 is configured to form the outer surface of the bushing. That is, the carbon steel plate 10 forms the outer surface of the bushing, and accordingly, the bushing can secure a certain durability that can respond to external impact or deformation prevention.

그리고 탄소강판(10)은 부싱의 외부표면을 형성시 5mm 이하의 두께로 형성된다. 이에 따라 탄소강판(10)은 부싱의 경량화에 기여할 수 있게 된다.And the carbon steel plate 10 is formed to a thickness of 5 mm or less when forming the outer surface of the bushing. Accordingly, the carbon steel sheet 10 can contribute to weight reduction of the bushing.

청동 소결층(20)은 탄소강판(10)에 테프론 필름(30)을 접착하도록 마련되는 구성이다. 이를 위해서, 청동 소결층(20)은 탄소강판(10)의 일측 표면에 청동분에 의해 소결되어 형성된다. 이때, 청동 소결층(20)은 탄소강판(10)과 테프론 필름(30)이 견고하게 접착될 수 있도록 3mm 이하의 두께로 형성된다.The bronze sintered layer 20 is configured to adhere the Teflon film 30 to the carbon steel plate 10 . To this end, the bronze sintered layer 20 is formed by sintering with bronze powder on one surface of the carbon steel sheet 10 . At this time, the bronze sintered layer 20 is formed to a thickness of 3 mm or less so that the carbon steel plate 10 and the Teflon film 30 can be firmly adhered.

테프론 필름(PTFE: Polytetrafluoroethylene)(30)은 부싱의 내부 표면을 형성하도록 마련되는 구성이다. 이때, 테프론 필름(30)은 5mm 이하의 두께로 형성된다.The Teflon film (PTFE: Polytetrafluoroethylene) 30 is configured to form the inner surface of the bushing. At this time, the Teflon film 30 is formed to a thickness of 5 mm or less.

여기서 테프론은 불소와 탄소의 강력한 화학적 결합으로 인해 매우 안정된 화합물을 형성함으로써 거의 완벽한 화학적 비활성 및 내열성, 비점착성, 우수한 절연 안정성, 낮은 마찰계수 등의 특성들을 가지고 있으며, 이러한 테프론에 의해 제조된 테프론 필름(30)은 예를 들어, 차량 서스펜션 시스템에 적용되는 샤프트의 지지시 별도의 표면 코팅이나 윤활유의 제공없이도 저마찰 및 무윤활 특성에 의해 자기윤활이 가능할 수 있게 된다.Here, Teflon forms a very stable compound due to the strong chemical bond between fluorine and carbon, so it has properties such as almost perfect chemical inertness, heat resistance, non-tackiness, excellent insulation stability, and low coefficient of friction. Reference numeral 30 indicates, for example, when supporting a shaft applied to a vehicle suspension system, self-lubrication is possible due to low friction and no lubrication properties without a separate surface coating or provision of lubricant.

이하, 도 2 내지 도 4를 참조하여 본 발명에 따른 자기윤활 부싱을 제조하기 위한 적층구조체의 제조과정을 순서대로 설명한다.Hereinafter, the manufacturing process of the laminated structure for manufacturing the self-lubricating bushing according to the present invention will be described in sequence with reference to FIGS. 2 to 4 .

도 2를 참조하면, 탄소강판(10) 위에 청동분을 도포하고 소결시켜 청동 소결층(20)을 형성한 뒤, 청동 소결층(20) 위에 테프론 필름(30)을 적층하게 된다.Referring to FIG. 2 , bronze powder is applied and sintered on the carbon steel sheet 10 to form a bronze sintered layer 20 , and then a Teflon film 30 is laminated on the bronze sintered layer 20 .

도 3을 참조하면, 도 2의 적층구조체를 하부금형(1) 위에 배치하고, 상부금형(2)을 하강시킴으로써 하부금형(1)과 상부금형(2)에 의해 적층구조체를 설정된 압력 및 온도로 일정시간 가압하여 일체화시키게 된다. 이때, 적층구조체는 하부금형(1) 및 상부금형(2)에 의해 100Mpa 이하의 압력 및 400℃ 이하의 온도 조건에서 30분 이하로 가압되게 된다.Referring to FIG. 3 , the laminated structure of FIG. 2 is placed on the lower mold 1 , and the upper mold 2 is lowered to set the laminated structure by the lower mold 1 and the upper mold 2 at a set pressure and temperature. It is integrated by pressing for a certain period of time. At this time, the laminated structure is pressed by the lower mold 1 and the upper mold 2 at a pressure of 100 Mpa or less and a temperature of 400° C. or less for 30 minutes or less.

즉, 하부금형(1)과 상부금형(2)의 가압 구조에 의해, 청동 소결층(20)이 용융됨으로써 탄소강판(10)과 테프론 필름(30)이 일체화되도록 접착될 수 있게 되는 것이다.That is, by the pressing structure of the lower mold 1 and the upper mold 2 , the bronze sintered layer 20 is melted so that the carbon steel sheet 10 and the Teflon film 30 can be bonded to be integrated.

여기서 도면에 도시되지 않았지만, 하부금형(1)과 상부금형(2)의 내부에는 적층구조체를 설정온도로 가열하기 위한 발열체가 설치되게 된다.Although not shown in the drawings, a heating element for heating the laminated structure to a set temperature is installed inside the lower mold 1 and the upper mold 2 .

상기와 같이, 적층구조체가 하부금형(1)과 상부금형(2)에 의해 일체화되도록 가압된 후, 적층구조체는 하부금형(1) 및 상부금형(2)에 의해 가압된 상태에서 250℃ 이하의 온도로 냉각되게 된다. 이때, 적층구조체의 냉각방식은 자연냉각 방식, 송풍팬에 의한 송풍방식 및 에어컨에 의한 강제냉각 방식 중 어느 하나의 냉각방식으로 진행되게 된다.As described above, after the laminated structure is pressed to be integrated by the lower mold 1 and the upper mold 2, the laminated structure is pressed by the lower mold 1 and the upper mold 2 at a temperature of 250° C. or less. cooled to temperature. At this time, the cooling method of the laminated structure is performed by any one of a natural cooling method, a blowing method by a blowing fan, and a forced cooling method by an air conditioner.

즉, 적층구조체의 냉각에 의해, 청동 소결층(20)이 서서히 응고됨으로써 탄소강판(10)과 테프론 필름(30)이 일체화된 상태로 유지될 있게 되는 것이다.That is, by cooling the laminated structure, the bronze sintered layer 20 is gradually solidified so that the carbon steel sheet 10 and the Teflon film 30 can be maintained in an integrated state.

도 4를 참조하면, 적층구조체가 250℃ 이하의 온도로 냉각되게 되면, 상부금형(2)을 상승시키고 하부금형(1)으로부터 적층구조체를 탈거함으로써, 자기윤활 부싱을 제조하기 위한 적층구조체를 얻을 수 있게 되는 것이다.Referring to FIG. 4 , when the laminated structure is cooled to a temperature of 250° C. or less, the upper mold 2 is raised and the laminated structure is removed from the lower mold 1 to obtain a laminated structure for manufacturing a self-lubricating bushing. it will be possible

한편, 도 5를 참조하면, 본 발명에 따른 자기윤활 부싱을 제조하기 위한 적층구조체는 테프론 필름(30) 위에 배치되는 스테인리스 재질의 이형필름(40)을 더 포함한다. Meanwhile, referring to FIG. 5 , the laminated structure for manufacturing the self-lubricating bushing according to the present invention further includes a release film 40 made of stainless steel disposed on the Teflon film 30 .

이러한 이형필름(40)은 탄소강판(10), 청동 소결층(20) 및 테프론 필름(30)을 하부금형(1) 및 상부금형(2)에 의해 일체화하는 경우 테프론 필름(30) 위에 가접착된다.The release film 40 is a Teflon film 30 when the carbon steel sheet 10, the bronze sintered layer 20 and the Teflon film 30 are integrated by the lower mold 1 and the upper mold 2 Temporarily adhesive on the Teflon film 30 do.

도 6을 참조하면, 이형필름(50)은 적층구조체를 다수의 롤러(60)에 의해 부싱의 제조공정으로 투입시 별도의 탈거장치(도면에 미도시)에 의해 테프론 필름으로부터 탈거되게 된다. 적층구조체로부터 탈거된 이형필름(40)은 금속재질에 의해 훼손이 방지되어 재사용되며, 이에 따라 부싱의 제작단가를 낮출 수 있게 된다.Referring to FIG. 6 , the release film 50 is removed from the Teflon film by a separate removal device (not shown in the drawing) when the laminated structure is put into the manufacturing process of the bushing by the plurality of rollers 60 . The release film 40 removed from the laminated structure is reused as damage is prevented by the metal material, thereby reducing the manufacturing cost of the bushing.

이상 설명한 바와 같이, 본 발명에 따른 자기윤활 부싱을 제조하기 위한 적층구조체는, 탄소강판(10), 청동 소결층(20) 및 테프론 필름(30)의 적층 구조에 의해 일체화되도록 형성된 후 부싱의 제조에 사용됨으로써, 부싱은 탄소강판(10)에 의해 외부 충격 또는 변형 방지에 대응할 수 있는 일정한 내구성을 확보하면서도 테프론 필름(30)에 의해 별도의 표면 코팅이나 윤활유의 제공없이도 저마찰 및 무윤활 특성에 의해 자기윤활이 가능할 수 있다.As described above, the laminated structure for manufacturing the self-lubricating bushing according to the present invention is formed to be integrated by the laminated structure of the carbon steel sheet 10, the bronze sintered layer 20, and the Teflon film 30. By being used, the bushing has low friction and non-lubricating properties without a separate surface coating or lubricating oil by the Teflon film 30 while securing a certain durability that can respond to external impact or deformation prevention by the carbon steel plate 10. self-lubrication may be possible.

그리고 본 발명에 따른 자기윤활 부싱을 제조하기 위한 적층구조체는, 청동 소결층(20)에 의해 탄소강판(10)과 테프론 필름(30)의 견고한 접착성을 확보함으로써, 부싱의 사용과정에서 샤프트 등의 회전체에 의한 테프론 필름(30)의 분리를 방지할 수 있다.And the laminated structure for manufacturing the self-lubricating bushing according to the present invention secures strong adhesion between the carbon steel plate 10 and the Teflon film 30 by the bronze sintered layer 20, so that in the process of using the bushing, the shaft, etc. It is possible to prevent the separation of the Teflon film 30 by the rotating body.

앞에서, 본 발명의 특정한 실시예가 설명되고 도시되었지만 본 발명은 기재된 실시예에 한정되는 것이 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명한 일이다. 따라서, 그러한 수정예 또는 변형예들은 본 발명의 기술적 사상이나 관점으로부터 개별적으로 이해되어서는 안 되며, 변형된 실시예들은 본 발명의 특허청구범위에 속한다 하여야 할 것이다.In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the spirit or point of view of the present invention, and the modified embodiments should belong to the claims of the present invention.

10: 탄소강판
20: 청동 소결층
30: 테프론 필름
40: 이형필름
10: carbon steel sheet
20: bronze sintered layer
30: Teflon film
40: release film

Claims (7)

자기윤활 부싱을 제조하기 위한 적층구조체로서,
상기 적층구조체는 탄소강판과, 상기 탄소강판 위에 청동분을 도포하고 소결시켜 형성되는 청동 소결층 및 상기 청동 소결층 위에 배치되는 테프론 필름을 포함하고, 한 쌍의 하부금형과 상부금형 사이에 상기 적층구조체를 배치하고, 설정된 압력 및 온도로 일정시간 가압하여 일체화되는 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
A laminated structure for manufacturing a self-lubricating bushing, comprising:
The laminated structure includes a carbon steel sheet, a bronze sintered layer formed by applying and sintering bronze powder on the carbon steel sheet, and a Teflon film disposed on the bronze sintered layer, and the lamination between a pair of lower molds and upper molds A laminated structure for manufacturing a self-lubricating bushing, characterized in that it is integrated by arranging the structure and pressing it for a predetermined time at a set pressure and temperature.
제1항에 있어서,
상기 적층구조체는,
상기 하부금형 및 상부금형에 의해 100Mpa 이하의 압력 및 400℃ 이하의 온도 조건에서 30분 이하로 가압되어 형성되는 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
According to claim 1,
The laminated structure is
A laminated structure for manufacturing a self-lubricating bushing, characterized in that it is formed by being pressurized for 30 minutes or less at a pressure of 100 Mpa or less and a temperature of 400° C. or less by the lower mold and the upper mold.
제1항에 있어서,
상기 적층구조체는,
상기 하부금형 및 상부금형에 의해 가압된 후, 250℃ 이하의 온도로 냉각되는 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
According to claim 1,
The laminated structure is
After being pressed by the lower mold and the upper mold, the laminated structure for manufacturing a self-lubricating bushing, characterized in that it is cooled to a temperature of 250° C. or less.
제3항에 있어서,
상기 적층구조체는, 자연냉각 방식, 송풍팬에 의한 송풍방식 및 에어컨에 의한 강제냉각 방식 중 어느 하나의 냉각방식으로 냉각되는 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
4. The method of claim 3,
The laminated structure is a laminated structure for manufacturing a self-lubricating bushing, characterized in that it is cooled by any one of a natural cooling method, a blowing method by a blowing fan, and a forced cooling method by an air conditioner.
제1항 내지 제4항 중 어느 한 항에 있어서,
상기 하부금형 및 상부금형의 내부에는 상기 적층구조체를 설정온도로 가열하기 위한 발열체가 설치되는 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
5. The method according to any one of claims 1 to 4,
A laminated structure for manufacturing a self-lubricating bushing, characterized in that a heating element for heating the laminated structure to a set temperature is installed inside the lower mold and the upper mold.
제1항에 있어서,
상기 탄소강판의 두께는 5mm 이하이고, 상기 청동 소결층의 두께는 3mm 이하이며, 상기 테프론 필름의 두께는 5mm 이하인 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
According to claim 1,
The thickness of the carbon steel sheet is 5mm or less, the thickness of the bronze sintered layer is 3mm or less, and the thickness of the Teflon film is 5mm or less.
제1항에 있어서,
상기 적층구조체는,
상기 테프론 필름 위에 배치되는 스테인리스 재질의 이형필름을 더 포함하고, 상기 이형필름은 부싱의 제조공정으로 투입시 분리되는 것을 특징으로 하는 자기윤활 부싱을 제조하기 위한 적층구조체.
According to claim 1,
The laminated structure is
A laminate structure for manufacturing a self-lubricating bushing, characterized in that it further comprises a release film of a stainless material disposed on the Teflon film, wherein the release film is separated when inputted to the manufacturing process of the bushing.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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