KR100485244B1 - A graphite series contact or brush and manufacturing method thereof - Google Patents

A graphite series contact or brush and manufacturing method thereof Download PDF

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Publication number
KR100485244B1
KR100485244B1 KR10-2002-0021153A KR20020021153A KR100485244B1 KR 100485244 B1 KR100485244 B1 KR 100485244B1 KR 20020021153 A KR20020021153 A KR 20020021153A KR 100485244 B1 KR100485244 B1 KR 100485244B1
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South Korea
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graphite
silver
brush
powder
contact
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KR10-2002-0021153A
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Korean (ko)
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KR20030082702A (en
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김관수
윤원규
박명하
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희성금속 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/027—Composite material containing carbon particles or fibres

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)

Abstract

본 발명은 차단기에 사용되는 흑연(Gr)계 접점 또는 브러쉬 및 그 제조방법에 관한 것으로, 흑연(Gr)계 접점 또는 브러쉬 제조시 압출공정, 압연공정 및 절단 공정 또는 압출공정 및 절단공정으로 제조함으로써, 흑연(Gr)의 조직상태가 접촉면에 수평 또는 수직으로 평행하게 배열되어, 차단기에 부착하여 사용할 때 내마모성 및 내수명성이 매우 개선된 흑연(Gr)계 전기 접점 또는 브러쉬(Brush) 및 그 제조방법을 제공한다. The present invention relates to a graphite (Gr) -based contact or brush used in the circuit breaker and a method for manufacturing the same, by manufacturing the graphite (Gr) -based contact or brush in the extrusion process, rolling process and cutting process or extrusion process and cutting process , Graphite (Gr) -based electrical contact or brush (Gr) electrical contact or brush (structure) is arranged in a horizontal or vertical parallel to the contact surface, the wear resistance and the service life is very improved when attached to the circuit breaker To provide.

Description

흑연계 접점 또는 브러쉬 및 그 제조방법{A graphite series contact or brush and manufacturing method thereof}A graphite series contact or brush and manufacturing method

종래의 흑연(Gr)계 접점 또는 브러쉬(Brush)를 제조하는 방법은, 흑연(Gr)계 금속 중에서 구체적으로 은(Ag)-흑연(Gr)계의 접점 또는 브러쉬(Brush) 제조방법을 참고로 살펴보면, 차단기에 사용되는 은(Ag)-흑연(Gr)계 접점 또는 브러쉬는, 은(Ag)과 흑연(Gr)분말을 제조한 후, 은(Ag) 및 흑연(Gr) 분말을 일정 함량(AgGr2%, AgGr3%, AgGr5%, AgGr 10%)으로 혼합하고, 일정한 크기의 금형 속에 혼합 분말을 충진시킨 후, 가압성형을 실시한 다음으로 소결공정을 거친 뒤 재가압 및 기계가공으로 제조됨으로써 은(Ag)조직 속에 흑연(Gr)이 접촉면에 수평으로 넓게 불균일하게 분포되어 있어 도전성 및 내수명성이 불안정하였다.Conventional graphite (Gr) contact or brush (brush) manufacturing method, the silver (Ag) -graphite (Gr) of the contact point or brush (Brush) manufacturing method specifically in the graphite (Gr) metal. Looking at the silver (Ag) -graphite (Gr) contact or brush used in the circuit breaker, after producing silver (Ag) and graphite (Gr) powder, the silver (Ag) and graphite (Gr) powder to a certain amount ( AgGr2%, AgGr3%, AgGr5%, AgGr 10%), and after filling the mixed powder in a mold of a certain size, and then press molding, after sintering process is produced by re-pressurizing and machining Graphite (Gr) was distributed unevenly and horizontally on the contact surface in the Ag) structure, resulting in unstable conductivity and durability.

이 종래 기술의 공정을 도면을 참고로 좀 더 자세히 살펴보면, 도 1에 도시된 바와 같이, 먼저 분말제조공정(S11)에서 은(Ag)분말을 제조한 후, 제조된 일정 함량의 은(Ag)분말과 흑연(Gr)분말을 그 다음 분말혼합공정(S12)에서 예를 들어, AgGr2%, AgGr3%, AgGr5%, AgGr 10%등의 비율로 혼합한다. 그리고 나서, 이 혼합 분말을 일정크기의 금형 속에 충진시킨 후 성형공정(S13)에서 프레스(Press)로 가압성형을 실시한다. 이 성형공정(S13)에서 성형된 성형체를 그 다음 공정인 소결공정(S14)에서 일정한 강도 및 물성치를 주기 위해 수소분위기에서 600~980℃의 온도로 열처리한 후, 재가압공정(S15)에서 소결체에 잔존하는 기포를 일부 제거시키도록 소결체를 재가압처리하고, 기계가공공정(S16)에서 일정크기, 즉 접점크기러 기계가공을 행하여 은(Ag)-흑연(Gr)계 접점 또는 브러쉬(Brush)를 제조하였다. 이와 같이 제조된 종래의 은(Ag)-흑연(Gr)계 접점 또는 브러쉬의 내부조직을 도면을 통해 살펴보면, 그 횡단면에서 보면 도 2a에 도시된 바와 같이 은(Ag)기저(1) 조직에서 접촉면에 수평으로 흑연(Gr)(2)이 존재하고, 그 종단면에서 보면 도 2b에 도시된 바와 같이 은(Ag)기저(1) 조직에서 흑연(Gr)(2)이 접촉면에 넓게 분포하고 았어, 전기 접점의 특성상 흑연(Gr)이 전도성을 방해하므로 심한 전기저항이 발생되어 내 아크(arc)성이 저하되며, 마모가 심해 차단기 수명이 저하되는 문제점이 있다.Looking at the process of the prior art in more detail with reference to the drawings, as shown in Figure 1, first preparing a silver (Ag) powder in the powder manufacturing process (S11), and then produced a predetermined amount of silver (Ag) The powder and the graphite (Gr) powder are then mixed in a powder mixing step (S12) at, for example, AgGr 2%, AgGr 3%, AgGr 5%, AgGr 10%, and the like. Then, the mixed powder is filled into a mold of a predetermined size, and then press molding is performed by pressing in the molding step S13. The molded article formed in this molding step (S13) is heat-treated at a temperature of 600 to 980 ° C. in a hydrogen atmosphere in order to give a constant strength and physical properties in the next step, the sintering step (S14), and then the sintered body in a repressurizing step (S15). The sintered body is repressurized to remove some of the bubbles remaining in the sintered body, and a certain size, ie, contact size, is machined in the machining process (S16) to obtain a silver (Gr) -based contact or brush. Was prepared. Looking at the internal structure of the conventional silver (Ag) -graphite (Gr) -based contact or brush manufactured as described above through the drawings, as shown in Figure 2a, the contact surface in the silver (Ag) base (1) tissue Graphite (Gr) (2) is present in the horizontal direction, and in the longitudinal section, as shown in Fig. 2b, the graphite (Gr) (2) is widely distributed in the contact surface in the silver (Ag) base (1) structure, Due to the characteristics of the electrical contacts, graphite (Gr) interferes with conductivity, so that severe electrical resistance is generated, thereby reducing arc resistance, and abrasion is severe, resulting in a short circuit breaker life.

본 발명은 상기와 같은 종래 기술의 문제점을 개선하기 위해 발명된 것으로, 차단기에 사용되는 흑연(Gr)계 접점 또는 브러쉬(Brush) 제조시 압출공정, 압연공정 및 절단공정 또는 압출공정 및 절단공정으로 제조하여, 종래의 제조공정에서는 제조할 수 없는, 기저조직내에 흑연(Gr)의 조직상태를 접촉면에 수평 또는 수직으로 평행한 방향으로 균일하게 분포시킴으로써 도전성, 경도, 내마모성, 내수명성을 개선한 흑연(Gr)계 접점 또는 브러쉬(Brush)제조방법을 제공하는 것을 목적으로 한다.The present invention is invented to improve the problems of the prior art as described above, in the manufacturing of graphite (Gr) contact or brush (Brush) used in the breaker extrusion process, rolling process and cutting process or extrusion process and cutting process Graphite that has been improved in conductivity, hardness, abrasion resistance, and service life by uniformly distributing the state of graphite (Gr) in the underlying structure in a direction horizontally or vertically parallel to the contact surface, which cannot be manufactured in a conventional manufacturing process. An object of the present invention is to provide a (Gr) type contact or brush manufacturing method.

상기와 같은 목적을 달성하기 위해, 본 발명은 흑연(Gr)분말과 흑연과 합금되는 금속의 분말을 혼합한 후, 이를 빌렛트(Billet)로 성형하고, 소결공정을 거쳐서, 열간 압출을 하면 압출된 와이어(Wire)의 흑연(Gr) 조직상태는 압출방향으로 섬유(Fiber)상이 형성된다. 이 압출된 와이어를 압연공정을 거쳐 절단하면 접촉면에 수평 방향으로 흑연이 균일하게 분포되고, 압출된 와이어를 일정크기로 절단하면 접촉면에 수직방향으로 흑연(Gr)이 균일하게 분포되어 본 발명에 의해 흑연(Gr)계 접점 또는 브러쉬가 제공된다.In order to achieve the above object, the present invention, after mixing the graphite (Gr) powder and the powder of the metal alloyed with graphite, and then molded into a billet (Billet), through the sintering process, hot extrusion is extruded The graphite (Gr) texture state of the wire is formed in the fiber direction in the extrusion direction. When the extruded wire is cut through the rolling process, the graphite is uniformly distributed in the horizontal direction on the contact surface, and when the extruded wire is cut to a certain size, the graphite (Gr) is uniformly distributed in the vertical direction on the contact surface and according to the present invention, Graphite (Gr) based contacts or brushes are provided.

이와 같은 본 발명에 의해 흑연(Gr)계 접점 또는 브러쉬(Brush)제조 공정을 도면을 참고로 좀 더 상세히 설명하면 다음과 같다. 여기에서 흑연(Gr)계 접점 중에서 일실시예로서, 은(Ag)-흑연(Gr)계 접점 또는 브러쉬(Brush) 제조방법에 대해 설명하였다.Referring to the graphite (Gr) contact or brush (Brush) manufacturing process by the present invention in more detail with reference to the drawings as follows. Herein, as an example of the graphite (Gr) -based contact, a silver (Ag) -graphite (Gr) -based contact or a brush (Brush) manufacturing method has been described.

본 발명에 의하면 기저조직내에 흑연(Gr) 조직의 상태가 수평 또는 수직으로 형성되는데 먼저, 수평으로 형성되는 경우의 제조공정을 도 3a를 참고로 살펴보면, 도 3a에 도시된 바와 같이, 먼저 분말제조공정(31)에서 일정 크기의 은(Ag)분말을 제조한다. 이와 같이 제조된 은(Ag)분말의 일정 함량을 분말혼합공정(S32)에서 흑연(Gr)분말과 혼합한다. 그리고 나서 이 은(Ag)과 흑연(Gr)의 혼합 분말을 그 다음의 성형공정(S33)에서 일정크기, 예를 들어 50~150φ, 50~500Ι 크기의 원통금형 속에 충진시킨 후 프레스(Press)로 예를 들어 0.1~5Ton/㎠의 단위 가압력으로 가압성형을 행하여 빌렛트(Billet)를 주조한다. 이와 같이 성형된 성형체인 빌렛트를 일정한 강도 및 물성치를 갖추도록 하기 위해 그 다음 공정인 소결공정(S34)에서 진공 또는 수소 분위기에서 400~980℃에서 0.5~30시간동안 유지시켜 소결체를 형성한다. 그 다음으로 열간압축공정(S35)에서 상기 소결공정(S34)에서 제조된 소결체를 100~980℃에서 예열한 후 단위가압력 0.2~10Ton/㎠으로 프레스로 재가압처리한다. 그 다음의 열간압출공정(S36)에서는 이와 같이 재가압처리되어 압축된 빌렛트를 100~980℃에서 예열한 후 전기접점의 폭 및 길이의 크기를 갖는 압축금형을 사용하여 압출기에서 열간압출하는데, 이에 의해 압출된 와이어(Wire)에서의 흑연(Gr)의 조직상태가 압출방향으로 섬유(Fiber)상으로 형성된다. 여기에서. 예를 들어 접점크기가 1 ×5 ×6(㎜)인 경우에는 압출기 금형은 5 ×6(㎜)의 사각금형으로 와이어를 압출한다. 그리고 나서 이와 같이 상기 열간압출공정(S36)에서 압출된 와이어는 그 다음의 압연공정(S37)에서 압연된 후, 절단공정(S38)두께길이 만큼 절단되는데, 이에 의해 접촉면에 수평방향으로 흑연(Gr)이 균일하게 분포된다. 이와 같이 제조된 접점은 최종적으로 표면연마공정(S39)에서 표면의 이물 및 표면조도가 개선된다. 이에 의해, 본 발명에 의한 은(Ag)-흑연(Gr)계 접점 또는 브러쉬(Brush)의 제조가 완료된다.According to the present invention, the state of the graphite (Gr) structure in the base tissue is formed horizontally or vertically. First, referring to FIG. 3A of the manufacturing process in the case of being formed horizontally, as shown in FIG. In step 31, silver (Ag) powder of a certain size is produced. A predetermined amount of the silver (Ag) powder thus prepared is mixed with graphite (Gr) powder in a powder mixing process (S32). Then, the mixed powder of silver (Ag) and graphite (Gr) is filled into a cylindrical mold of a predetermined size, for example, 50 to 150 φ and 50 to 500 Ι in the next molding step (S33), and then press. For example, by pressing by a unit pressing force of 0.1 ~ 5 Ton / ㎠ to cast a billet (Billet). In order to have a predetermined strength and physical properties of the billet formed in this way to form a sintered compact by maintaining for 0.5-30 hours at 400 ~ 980 ℃ in a vacuum or hydrogen atmosphere in the next step of the sintering step (S34). Next, the pre-heated sintered body produced in the sintering process (S34) in the hot compression process (S35) at 100 ~ 980 ℃ and is repressurized by a press at a unit pressing pressure of 0.2 ~ 10Ton / ㎠. In the next hot extrusion process (S36), the pre-pressurized billet thus compressed is preheated at 100-980 ° C., and then hot-extruded in an extruder using a compression mold having a width and a length of an electrical contact. Thereby, the structure state of the graphite Gr in the extruded wire is formed in a fiber shape in the extrusion direction. From here. For example, when the contact size is 1 × 5 × 6 (mm), the extruder die extrudes the wire into a square mold of 5 × 6 (mm). Then, the wire extruded in the hot extrusion step (S36) as described above is rolled in the next rolling step (S37), and then cut by the thickness length of the cutting step (S38), whereby the graphite (Gr) in the horizontal direction on the contact surface ) Are evenly distributed. The contacts thus produced are finally improved in the surface foreign matter and surface roughness in the surface polishing process (S39). Thereby, manufacture of the silver (Ag) -graphite (Gr) type contact or brush by this invention is completed.

본 발명의 또다른 형태로서 흑연(Gr)조직이 기저조직에서 수직 방향으로 균일하게 분포되는 경우의 제조방법은, 도 3b에 도시된 바와 같이, 열간 압출공정(S36)에서 압출한 다음으로 절단공정(S38)에서 절단함으로써 기저조직내에 흑연(Gr)조직이 수직방향으로 균일하게 분포되도록 하는 것만 제외하면 도 3a의 공정과 동일하므로, 이에 대한 설명은 상기한 것을 대신한다. 이와 같이 본 발명의 제조방법에 의해 제조된 은(Ag)-흑연(Gr)계 전기접점의 조직형태를 도 4를 참고로 살펴보면, 도 4a는 압출공정, 압연공정 및 절단공정으로 제조된 은(Ag)-흑연(Gr)계 접점 또는 브러쉬의 횡단면으로서 은(Ag)기저 조직에서 흑연(Gr)(2)조직이 일직선 형상으로 접촉면에 수평으로 평행하며 균일하게 분포되어 있고, 그 종단면은 도 4b에 도시된 바와 같이, 은(Ag)기저 조직에서 흑연(Gr)(2) 조직이 점상으로 매우 균일하게 분포되어 있음을 알 수 있다. 또한 도 4c는 압출공정 및 절단공정으로 제조된 것의 횡단면으로서 은(Ag)기저 조직에서 흑연(Gr)(2) 조직이 일직선 형상으로 접촉면에 수직으로 평행하며 균일하게 분포되어 있고, 그 종단면은 도 4b와 동일하며 도 4b에 도시된 바와 같이 은(Ag)기저 조직에서 흑연(Gr)(2) 조직이 점상으로 매우 균일하게 분포되어 있음을 알 수 있다.As another embodiment of the present invention, the manufacturing method in the case where the graphite (Gr) structure is uniformly distributed in the vertical direction in the base structure, as shown in Figure 3b, is extruded in the hot extrusion step (S36) and then the cutting step Since it is the same as the process of FIG. 3A except that the graphite (Gr) structure is uniformly distributed in the vertical direction by cutting at S38, the description thereof is replaced by the above. As described above, referring to FIG. 4, the structure of the silver (Ag) -graphite (Gr) -based electrical contact manufactured by the manufacturing method of the present invention is illustrated in FIG. 4A. As a cross section of an Ag) -graphite (Gr) -based contact or brush, the graphite (Gr) (2) structure is uniformly distributed horizontally and parallel to the contact surface in the silver (Ag) -based structure, and its longitudinal section is shown in FIG. 4B. As shown in FIG. 1, it can be seen that the graphite (Gr) 2 structure is distributed very uniformly in the silver (Ag) based structure. 4C is a cross sectional view of the fabricated by the extrusion process and the cutting process, in which the graphite (Gr) (2) structure is uniformly distributed parallel to the contact surface in a straight line in the silver (Ag) -based structure, the longitudinal section of which is shown in FIG. As shown in FIG. 4B, it can be seen that graphite (Gr) 2 structure is distributed uniformly in the silver (Ag) based structure as shown in FIG. 4B.

본 발명의 효과를 더 명확하게 하기 위해 본 발명에 의해 제조된 전기접점 또는 브러쉬와 종래의 방법으로 제조된 전기접점 또는 브러쉬를 비교해보면 표 1과 같다.In order to clarify the effects of the present invention when comparing the electrical contact or brush produced by the present invention with the electrical contact or brush produced by a conventional method is shown in Table 1.

구분division 밀도density 비커스(VICKERS)경도Vickers hardness 전기전도도(IACS%)Electrical Conductivity (IACS%) 내ARCMy ARC 내수명성Service life 비고Remarks 종래의 방법Conventional method 8.8~9.58.8 ~ 9.5 20~6020-60 30~60%30-60% 보통usually 보통usually 본 발명의 방법Method of the invention 9.5~9.89.5-9.8 45~8045-80 60~85%60-85% 우수Great 탁월eminence

여기에서, 전기접점 또는 브러쉬의 시료는 은(Ag) : 흑연(Gr)=97: 3%로 분말을 혼합한 것으로, 종래의 방법 및 본 발명의 방법으로 제조하여 비교조사한 결과이다.Here, the sample of an electrical contact or a brush is a powder mixed with silver (Ag): graphite (Gr) = 97: 3%, and it is the result of the comparative investigation made by the conventional method and the method of this invention.

상기 표 1에서도 알 수 있듯이, 본 발명의 의한 제조방법으로 제조된 은(Ag)-흑연(Gr)계 접점 또는 브러쉬는 밀도, 비커스 경도, 전기전도도 등의 물성치 및 조직상태가 종래 기술에 비해 매우 우수하여 차단기용 접점으로 사용시 내아크(ARC)성 및 내수명성이 개선되었음을 알 수 있다.As can be seen in Table 1, the silver (Ag) -graphite (Gr) -based contact or brush produced by the manufacturing method of the present invention has a very high physical properties such as density, Vickers hardness, electrical conductivity, and structure compared to the prior art. It can be seen that the arc resistance (ARC) resistance and the service life is improved when used as a breaker contact.

상기와 같은, 본 발명의 은(Ag)-흑연(Gr)계 접점 또는 브러쉬 제조방법은 은(Ag)-흑연(Gr)계 접점에만 한정되는 것은 아니고, 은(Ag)-산화물계의 소결공법으로 제조되는 전기접점의 제조방법, 은(Ag)-흑연(Gr)-니켈(Ni)의 3원합금 또는 은(Ag)-흑연(Gr)이 함유된 전기접점 제조방법, 동(Cu)-흑연(Gr) 및 동(Cu)-흑연(Gr)이 함유된 합금 또는 카본 브러쉬(CARBON-BRUSH) 제조방법 및 흑연(Gr)과 카본(Carbon)이 함유된 합금의 제조방법 등에도 물론 적용될 수 있다. As described above, the silver (Ag) -graphite (Gr) -based contact or brush manufacturing method of the present invention is not limited to silver (Ag) -graphite (Gr) -based contacts, the silver (Ag) -oxide-based sintering method Method for producing an electrical contact made of a silver, (Ag) -graphite (Gr) -nickel (Ni) ternary alloy or silver (Ag)-graphite (Gr) containing an electrical contact manufacturing method, copper (Cu)- It can of course also be applied to alloys containing graphite (Gr) and copper (graphite) -Gr (Gr) or to methods of producing carbon brushes (CARBON-BRUSH) and to methods of producing alloys containing graphite (Gr) and carbon (Carbon). have.

본 발명에 의하면, 흑연(Gr)계 전기접점 또는 브러쉬 제조시 압출공정, 압연공정 및 절단공정 또는 압출공정 및 절단공정에 의해 제조함으로써, 종래의 제조공정으로는 제조할 수 없는 기저조직내에 흑연(Gr)의 조직상태를 접촉면에 수평 또는 수직으로 평행한 방향으로 배열할 수 있도록 하므로, 종래의 방법에 의해 제조된 접점 또는 브러쉬에 비해, 밀도, 경도 및 전기전도도 등의 물성치와 조직상태가 매우 우수하고, 따라서 이와 같이 제조된 접점을 차단기의 전기접점으로 사용할 때 도전성, 내마모성 및 내수명성을 양호하게 개선시킬 수 있는 효과가 있다.According to the present invention, the graphite (Gr) -based electrical contact or brush is produced by the extrusion process, the rolling process and the cutting process or the extrusion process and the cutting process in the production of the brush, the graphite ( Since the structure state of Gr) can be arranged in the direction parallel to the contact surface in the horizontal or vertical direction, compared with the contact or brush manufactured by the conventional method, the physical properties such as density, hardness, and electrical conductivity are very excellent. Therefore, there is an effect that it is possible to improve the conductivity, wear resistance and service life well when using the contact prepared as described above as an electrical contact of the circuit breaker.

도 1은 종래의 공정을 설명하는 도면이다.1 is a view for explaining a conventional process.

도 2는 종래의 공정에 의해 제조된 은(Ag)-흑연(Gr)계 접점의 내부조직을 나타내는 도면이다.2 is a view showing the internal structure of the silver (Ag) -graphite (Gr) -based contact manufactured by a conventional process.

도 3a 및 도 3b는 본 발명의 제조공정을 설명하는 도면이다.3A and 3B illustrate the manufacturing process of the present invention.

도 4a 내지 4c는 본 발명의 제조공정에 의해 제조된 은 (Ag)-흑연(Gr)계 접점의 내부조직을 나타내는 도면이다.Figures 4a to 4c is a view showing the internal structure of the silver (Ag) -graphite (Gr) -based contact manufactured by the manufacturing process of the present invention.

＊ 도면의 주요부분에 대한 부호설명＊ Code description for main part of drawing

1. 은(Ag)기저 2.흑연(Gr)1. Silver (Ag) base 2. Graphite (Gr)

Claims (3)

은(Ag)98%-흑연(Gr)2%, 은(Ag)97%-흑연(Gr)3%, 은(Ag)95%-흑연(Gr)5%, 은(Ag)90%-흑연(Gr)10% 중 어느 하나의 혼합비율로 구성된 흑연(Gr)계 접점 또는 브러쉬 제조공정으로 제조된 흑연(Gr)계 접점 또는 브러쉬(Brush)에 있어서,Silver (Ag) 98%-Graphite (Gr) 2%, Silver (Ag) 97%-Graphite (Gr) 3%, Silver (Ag) 95%-Graphite (Gr) 5%, Silver (Ag) 90%-Graphite In the graphite (Gr) contact or brush (Br) produced by the graphite (Gr) contact or brush manufacturing process composed of a mixing ratio of (Gr) 10%, 압출공정 및 절단공정 또는 압출공정, 압연공정 및 절단공정으로 제조되어 흑연(Gr)조직이 접촉면에 수직 또는 수평 방향으로 섬유(Fiber)상을 형성한 것을 특징으로 하는 흑연(Gr)계 접점 또는 브러쉬(Brush).Graphite (Gr) contact or brush, which is manufactured by extrusion process, cutting process or extrusion process, rolling process and cutting process, and the graphite (Gr) structure forms a fiber phase in the vertical or horizontal direction on the contact surface. (Brush). 은분말을 제조하는 분말제조공정과,A powder manufacturing process for producing silver powder, 상기 분말제조공정에 의해 제조된 상기 은분말을 흑연분말과 은(Ag)98%-흑연(Gr)2%, 은(Ag)97%-흑연(Gr)3%, 은(Ag)95%-흑연(Gr)5%, 은(Ag)90%-흑연(Gr)10% 중 어느 하나의 비율로 혼합하는 분말혼합공정과,The silver powder produced by the powder manufacturing process is graphite powder and silver (Ag) 98%-graphite (Gr) 2%, silver (Ag) 97%-graphite (Gr) 3%, silver (Ag) 95%- A powder mixing step of mixing at a ratio of graphite (Gr) 5% or silver (Ag) 90%-graphite (Gr) 10%; 상기 분말혼합공정에 의해 혼합된 분말을 프레스로 가압성형하여 빌렛트(Billet)를 주조하는 성형공정과,A molding process of casting a billet by pressing the powder mixed by the powder mixing process with a press; 상기 성형공정에서 성형된 상기 빌렛트 열처리하는 소결공정과,A sintering step of heat-treating the billet formed in the molding step; 상기 소결공정에서 제조된 소결체를 재가압처리하는 압축공정으로 이루어지는 은(Ag)-흑연(Gr)으로 구성된 흑연(Gr)계 접점 또는 브러쉬 제조공정으로 제조된 흑연(Gr)계 접점 또는 브러쉬(Brush)의 제조방법에 있어서,Graphite (Gr) contact or brush made of silver (Ag) -graphite (Gr) made of a compression process for repressurizing the sintered body manufactured in the sintering process or a brush manufacturing process In the manufacturing method of), 상기 압축공정에서 재가압 처리되어 압축된 빌렛트를 압축 금형을 사용하여 압출기에서 열간 압축하는 압출공정과,An extrusion process of hot-pressing the billet, which has been repressurized and compressed in the compression process, using a compression mold; 상기 압출공정에서 압출된 와이어(Wire)를 압연하는 압연공정과,A rolling process of rolling the wire extruded in the extrusion process; 상기 압연공정에서 압연된 와이어(Wire)를 절단하는 절단공정을 더 포함하여 구성되며,It is configured to further include a cutting process for cutting the wire (Wire) rolled in the rolling process, 흑연(Gr)조직이 접촉면에 수평방향으로 섬유(Fiber)상을 형성하는 것을 특징으로 하는 흑연(Gr)계 접점 또는 브러쉬 제조방법.Graphite (Gr) -based contact or brush manufacturing method, characterized in that to form a fiber (Fiber) in the horizontal direction on the contact surface. 은분말을 제조하는 분말제조공정과,A powder manufacturing process for producing silver powder, 상기 분말제조공정에 의해 제조된 상기 은분말을 흑연분말과 은(Ag)98%-흑연(Gr)2%, 은(Ag)97%-흑연(Gr)3%, 은(Ag)95%-흑연(Gr)5%, 은(Ag)90%-흑연(Gr)10% 중 어느 하나의 비율로 혼합하는 분말혼합공정과,The silver powder produced by the powder manufacturing process is graphite powder and silver (Ag) 98%-graphite (Gr) 2%, silver (Ag) 97%-graphite (Gr) 3%, silver (Ag) 95%- A powder mixing step of mixing at a ratio of graphite (Gr) 5% or silver (Ag) 90%-graphite (Gr) 10%; 상기 분말혼합공정에 의해 혼합된 분말을 프레스로 가압성형하여 빌렛트(Billet)를 주조하는 성형공정과,A molding process of casting a billet by pressing the powder mixed by the powder mixing process with a press; 상기 성형공정에서 성형된 상기 빌렛트를 열처리하는 소결공정과,A sintering step of heat-treating the billet formed in the molding step; 상기 소결공정에서 제조된 소결체를 재가압처리하는 압축공정으로 이루어지는 은(Ag)-흑연(Gr)으로 구성된 흑연(Gr)계 접점 또는 브러쉬 제조공정으로 제조된 흑연(Gr)계 접점 또는 브러쉬(Brush)의 제조방법에 있어서,Graphite (Gr) contact or brush made of silver (Ag) -graphite (Gr) made of a compression process for repressurizing the sintered body manufactured in the sintering process or a brush manufacturing process In the manufacturing method of), 재가압 처리되어 압축된 빌렛트를 압축 금형을 사용하여 압출기에서 열간 압축하는 압출공정과An extrusion process in which the pressurized billet is recompressed and hot compressed in an extruder using a compression mold. 상기 압출공정에서 압출된 와이어를 절단하는 절단공정을 더 포함하여 구성되며,It is configured to further include a cutting process for cutting the wire extruded in the extrusion process, 흑연(Gr)조직이 접촉면에 수직방향으로 섬유(Fiber)상을 형성하는 것을 특징으로 하는 흑연(Gr)계 접점 또는 브러쉬 제조방법.Graphite (Gr) -based contact or brush manufacturing method characterized in that to form a fiber (Fiber) in the direction perpendicular to the contact surface.
KR10-2002-0021153A 2002-04-18 2002-04-18 A graphite series contact or brush and manufacturing method thereof KR100485244B1 (en)

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KR20170070471A (en) * 2015-12-14 2017-06-22 희성금속 주식회사 Fabrication Method of Ag-Ni-C Composite Clad Strip for Electrical Contact Materials of Magnetic Connector
KR102356988B1 (en) * 2021-07-08 2022-02-08 주식회사 유승 Dispersion Hardened Silver-based Composite for Measuring Device Element of Electronic Parts and Manufacturing Process of the Dispersion Hardened Silver-based Composite by Powder Metallurgy

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JPH0813065A (en) * 1994-07-05 1996-01-16 Sumitomo Metal Mining Co Ltd Sintered material for electrical contact and production thereof
KR0144991B1 (en) * 1995-06-30 1998-07-15 박성훈 Method fkr manufacturing disk-shaped graphite particles
KR19980052576A (en) * 1996-12-24 1998-09-25 오상수 Manufacturing method of metal graphite brush for DC motor
KR19990016288A (en) * 1997-08-14 1999-03-05 오상수 Metal Graphite Brush Manufacturing Method
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170070471A (en) * 2015-12-14 2017-06-22 희성금속 주식회사 Fabrication Method of Ag-Ni-C Composite Clad Strip for Electrical Contact Materials of Magnetic Connector
KR102054538B1 (en) * 2015-12-14 2019-12-10 엘티메탈 주식회사 Fabrication Method of Ag-Ni-C Composite Clad Strip for Electrical Contact Materials of Magnetic Connector
KR102356988B1 (en) * 2021-07-08 2022-02-08 주식회사 유승 Dispersion Hardened Silver-based Composite for Measuring Device Element of Electronic Parts and Manufacturing Process of the Dispersion Hardened Silver-based Composite by Powder Metallurgy

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