KR101361026B1 - Dual material brush and manufacturing method thereof - Google Patents
Dual material brush and manufacturing method thereof Download PDFInfo
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- KR101361026B1 KR101361026B1 KR1020120042394A KR20120042394A KR101361026B1 KR 101361026 B1 KR101361026 B1 KR 101361026B1 KR 1020120042394 A KR1020120042394 A KR 1020120042394A KR 20120042394 A KR20120042394 A KR 20120042394A KR 101361026 B1 KR101361026 B1 KR 101361026B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
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- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
본 발명은 선체와 샤프트간의 전압기울기를 낮추기 위해 이종 소재를 접합하여 브러쉬를 제조하는 이종접합 브러쉬 및 그 제조방법에 관한 것으로, 본 발명에 의해 제조된 이종접합 브러쉬는 은에 비하여 상대적으로 저가인 동의 재료를 더 많이 사용하여 이종접합 형태로 제조함으로써 고가인 은을 전량 사용하여 제조하는 종래의 은 브러쉬에 비해 소재 원가를 절감하며, 내마모성 및 내구성을 향상시킬 수 있다.The present invention relates to a heterojunction brush for manufacturing a brush by joining dissimilar materials to lower the voltage gradient between the hull and the shaft, and a heterojunction brush produced by the present invention is relatively inexpensive compared to silver. By using more materials to manufacture in a heterojunction form, it is possible to reduce the material cost, and to improve wear resistance and durability compared to conventional silver brushes manufactured using all of the expensive silver.
Description
본 발명은 브러쉬에 관한 것으로, 더욱 상세하게는 이종소재접합 브러쉬 및 그 제조방법에 관한 것이다.The present invention relates to a brush, and more particularly to a heterogeneous material bonding brush and a manufacturing method thereof.
일반적으로 전기공급 브러쉬는, 예를 들어 전원에 모터의 회전자를 전기적으로 연결함에 있어서 전선으로 고정연결하지 않고 접촉식으로 연결하여 전압을 공급하는 부품을 말하며, 전기가 공급되어 동작하는 모터와 반대로 발전된 전기를 공급하는 발전기에도 전기공급 브러쉬가 사용된다. In general, the brush for supplying electricity refers to a part for supplying a voltage by contacting the electric motor without a fixed connection by using electric wires. Electric supply brushes are also used for generators that supply the electricity generated.
전기공급 브러쉬는 그 용도와 재료에 따라 탄소 브러쉬, 천연 흑연 브러쉬, 전기 흑연 브러쉬, 금속 흑연 브러쉬, 은 브러쉬 등이 있으며, 그 접촉 압력, 전류 밀도, 진동, 회전자 샤프트의 표면 상태, 주위 환경(온도, 습도, 기압, 수압 등)이 그 수명에 영향을 미친다.Electric supply brushes include carbon brushes, natural graphite brushes, electric graphite brushes, metal graphite brushes, and silver brushes, depending on their use and materials.These contact pressures, current densities, vibrations, surface conditions of the rotor shaft, and ambient environment ( Temperature, humidity, barometric pressure, water pressure, etc.) affect its lifespan.
한편, 선박의 추진기 스크류 샤프트에 사용되는 브러쉬에 있어서, 이종 금속들이 전해질인 해수에 담궈지게 되면 기전력 차이에 의한 전위차가 발생되고, 이들 사이에 전자이동과 함께 산화가 일어나는 양극에서 갈바닉 부식이 발생하는 문제로 인해 일반적으로 희생양극에 의한 음극보호방식(cathodic protection)을 이용하여 선체를 보호하고 있다. On the other hand, in the brush used for the screw shaft of the ship's propeller, when the different metals are immersed in the seawater which is the electrolyte, a potential difference is generated due to the electromotive force difference, and galvanic corrosion occurs at the anode where oxidation occurs along with electron transfer between them. Due to the problem, generally, cathodic protection by sacrificial anodes is used to protect the hull.
그런데, 희생양극에 의한 음극보호방식은 선체의 대형화에 따라 제한적으로 사용될 수밖에 없어 최근에는 외부전원법(ICCP)에 의한 음극보호방식이 널리 이용되고 있다.By the way, the negative electrode protection method by the sacrificial anode has to be limited to the size of the hull in recent years, the cathode protection method by the external power supply method (ICCP) has been widely used in recent years.
외부전원법은 티탄(Ti)과 같은 불활성 금속을 양극으로, 선체를 음극으로 하여 전자 흐름을 유지하므로 음극을 부식 전위보다 낮게 유지한다. The external power method maintains electron flow with an inert metal such as titanium (Ti) as the anode and the ship body as the cathode, thus maintaining the cathode below the corrosion potential.
선체는 추진기 스크류 샤프트 부분에서 부식이 심한데 샤프트 베어링의 윤활막 생성 등으로 전자의 흐름에 장애가 발생하기 때문이다. 즉, 선체와의 전위차로 인한 부식 구동력이 커지기 때문에 추진기 스크류 샤프트 주위에 높은 통전능력을 갖는 은 브러시를 설치하여 전위차를 감소시켜 내식성을 도모하고 있다.The hull is highly corroded in the screw shaft of the propeller because the flow of electrons is disturbed by the formation of the lubricating film of the shaft bearing. That is, since the corrosion driving force due to the potential difference with the hull is increased, a silver brush having a high current carrying capacity is installed around the screw shaft of the propeller to reduce the potential difference to achieve corrosion resistance.
대한민국 공개특허공보 제10-2000-0059273호는 선박 또는 해상 구조물의 추진운동 즉 추진기에 관한 것으로서, 회전자의 동력공급을 위하여 브러쉬를 사용한 예가 개시되어 있다.Korean Patent Laid-Open Publication No. 10-2000-0059273 relates to a propulsion movement or propulsion of a ship or offshore structure, and an example of using a brush for power supply of a rotor is disclosed.
일반적인 선박 추진기 스크류 샤프트에 사용되는 브러쉬는, 주로 은(Ag) 분말에 약간의 흑연(graphite) 분말을 혼합하여 제조한다. 예로서, 은 분말 80~95중량%에 대하여 흑연 분말 5~20중량%로 혼합한 후, 금형 내에 혼합 분말을 충전한 후 가압성형하여 불활성 분위기에서 소결 공정을 거친 뒤 기계 가공으로 제조하고 있다.Brushes used in general ship propeller screw shafts are made mainly by mixing some graphite powder with silver (Ag) powder. For example, after mixing 5 to 20% by weight of graphite powder with respect to 80 to 95% by weight of silver powder, the mixed powder is filled into a mold and then press-molded to undergo a sintering process in an inert atmosphere and then manufactured by machining.
그러나, 이와 같이 제조된 선박 추진기 스크류 샤프트용 브러쉬는, 주소재로 고가인 은을 사용함으로써 제조 가격이 상승하며, 소재 특성상 내구성 및 내마모성이 떨어지는 문제점이 있었다.However, the brush for the ship propeller screw shaft manufactured as described above has a problem in that the manufacturing price is increased by using expensive silver as an address material, and the durability and wear resistance are inferior in material characteristics.
본 발명은 상술한 종래기술의 문제점을 극복하기 위한 것으로서, 이종소재를 접합하여 브러쉬를 제조함으로써, 제조원가를 절감하고 내구성 및 내마모성을 향상시킨 이종접합 브러쉬 및 그 제조방법을 제공하는 데에 그 목적이 있다.The present invention is to overcome the problems of the prior art described above, the purpose of providing a heterojunction brush and a method of manufacturing the same by reducing the manufacturing cost, improve durability and wear resistance by manufacturing a brush by bonding the heterogeneous material. have.
상기와 같은 목적을 달성하기 위해 본 발명은, 동 분말 80~90중량%와, 흑연 분말 10~20중량%를 혼합하는 1차분말혼합단계; 1차혼합분말을 금형의 기준선까지 충전하는 1차충전단계; 은 분말 40~90중량%와, 흑연 분말 9~50중량%와, 망간 분말 1~10중량%를 혼합하는 2차분말혼합단계; 상기 1차혼합분말이 충전된 금형 위에 2차혼합분말을 충전하는 2차충전단계; 성형 압 0.5~1.5 Ton/cm2 로 가압 성형하는 성형단계; 및 성형체를 700℃~900℃의 온도에서 22시간~26시간 동안 불활성 분위기에서 열처리하여 소결시키는 열처리 및 소결단계로 이루어진 이종접합 브러쉬의 제조방법을 제공한다.In order to achieve the above object, the present invention, the first powder mixing step of mixing 80 to 90% by weight of copper powder, 10 to 20% by weight of graphite powder; A primary charging step of charging the primary mixed powder to a base line of the mold; A secondary powder mixing step of mixing 40 to 90% by weight of silver powder, 9 to 50% by weight of graphite powder, and 1 to 10% by weight of manganese powder; A secondary charging step of charging a secondary mixed powder on the mold filled with the primary mixed powder; A molding step of press molding at a molding pressure of 0.5 to 1.5 Ton / cm 2 ; And it provides a method for producing a heterojunction brush consisting of a heat treatment and a sintering step of heat-treating the molded body in an inert atmosphere for 22 hours to 26 hours at a temperature of 700 ℃ ~ 900 ℃.
본 발명에 있어서, 상기 1차혼합분말을 충전하는 기준선은 전체 충전량의 2/3 이상인 것이 바람직하다.In the present invention, it is preferable that the reference line for filling the primary mixed powder is 2/3 or more of the total filling amount.
본 발명에 따른 이종접합 브러쉬 및 그 제조방법에 의하면, 이종소재를 접합하여 브러쉬를 제조함으로써 제조원가를 절감하고 내구성을 향상시키는 효과가 있다.According to the heterojunction brush and the manufacturing method thereof according to the present invention, there is an effect of reducing the manufacturing cost and improve the durability by bonding the dissimilar material to manufacture the brush.
도 1은 본 발명에 의한 이종접합 브러쉬의 제조방법을 나타낸 순서도,
도 2는 도 1의 제조방법으로 제조된 이종접합 브러쉬를 나타낸 정면도,
도 3은 도 2의 이종 접합 브러쉬의 측면도이다.1 is a flow chart showing a method of manufacturing a heterojunction brush according to the present invention,
Figure 2 is a front view showing a heterojunction brush manufactured by the manufacturing method of Figure 1,
3 is a side view of the heterojunction brush of FIG. 2.
이하, 첨부 도면을 참조로 본 발명을 바람직한 실시예에 의해 상세히 설명하기로 한다.Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 이종접합 브러쉬의 제조방법을 나타낸 순서도이다.1 is a flow chart showing a method of manufacturing a heterojunction brush of the present invention.
도시된 바와 같이, 본 발명의 선박용 이종접합 브러쉬의 제조방법은 동 분말 80~90중량%와, 흑연 분말 10~20중량%를 혼합하는 1차분말혼합단계(S110); 1차혼합분말을 금형의 기준선까지 충전하는 1차충전단계(S120); 은(Ag) 분말 40~90중량%와, 흑연(graphite) 분말 9~50중량%와, 망간(Mn) 분말 1~10중량%를 혼합하는 2차분말혼합단계(S130); 1차혼합분말이 충전된 금형 내에 2차혼합분말을 충전하는 2차충전단계(S140); 성형 압 0.5~1.5 Ton/cm2 로 가압 성형하는 성형단계(S150); 및 성형체를 700℃~900℃의 온도에서 22시간~26시간 동안 불활성 분위기에서 열처리하여 소결시키는 열처리 및 소결단계(S160)로 이루어진다.
As shown, the method for producing a heterogeneous bonding brush for ships of the present invention comprises a primary powder mixing step (S110) of mixing 80 to 90% by weight of copper powder and 10 to 20% by weight of graphite powder; A primary charging step of charging the primary mixed powder to a base line of the mold (S120); A secondary powder mixing step (S130) of mixing 40 wt% to 90 wt% of silver (Ag) powder, 9 wt% to 50 wt% of graphite powder, and 1 wt% to 10 wt% of manganese (Mn) powder; A secondary charging step (S140) of filling the secondary mixed powder in a mold filled with the primary mixed powder; Molding step (S150) for pressing molding at a molding pressure 0.5 ~ 1.5 Ton / cm 2 ; And heat treatment and sintering step (S160) for sintering the molded body by heat treatment in an inert atmosphere for 22 hours to 26 hours at a temperature of 700 ℃ ~ 900 ℃.
<실시예 1>
≪ Example 1 >
동 분말 80중량%와, 흑연 분말 20중량%을 혼합한 1차혼합분말을 마모 한계선까지 금형에 충전하고, 은 분말 80중량%, 흑연 분말 17중량%와, 내 마모성을 향상시키기 위한 첨가제로서 망간 분말 3중량%을 혼합한 2차혼합분말을 1차혼합분말이 충전된 금형 내에 충전하였다. 1,2차혼합분말이 금형에 모두 충전되면, 성형 압 1 Ton/cm2 로 가압 성형을 행한 후 성형체를 700℃의 온도에서 26시간 동안 불활성 분위기에서 열처리하여 이종접합 브러쉬용 소결체를 제조하였다. 제조된 소결체는 최종적으로 기계 가공 공정을 거쳐 이종접합 브러쉬의 제조가 완료되었다. A primary mixed powder containing 80% by weight of copper powder and 20% by weight of graphite powder was filled into the mold to the wear limit line, 80% by weight of silver powder, 17% by weight of graphite powder, and manganese as an additive to improve wear resistance. A secondary mixed powder containing 3% by weight of powder was filled into a mold filled with the primary mixed powder. When the first and second mixed powders were all filled in the mold, pressure molding was performed at a molding pressure of 1 Ton / cm 2, and the molded bodies were heat treated in an inert atmosphere at a temperature of 700 ° C. for 26 hours to prepare a sintered compact for heterojunction brushes. The manufactured sintered compact was finally subjected to a machining process to manufacture a heterojunction brush.
아래의 표 1은 본 발명의 실시예 1에 의해 제조된 이종접합 브러쉬와 종래의 방법으로 제조된 선박 추진기 스크류 샤프트용 은 브러쉬의 특성을 나타낸 비교표이다.Table 1 below is a comparison table showing the characteristics of the heterojunction brush produced in Example 1 of the present invention and the silver brush for ship propeller screw shaft manufactured by the conventional method.
종래의 은 브러쉬는 은 분말 90중량%에 대하여 흑연 분말 10중량%로 혼합한 후, 금형 내에 혼합 분말을 충전한 후 가압성형하여 불활성 분위기에서 소결 공정을 거친 뒤 기계 가공으로 제조한 것을 사용하였다.The conventional silver brush was prepared by machining by mixing 10% by weight of graphite powder with respect to 90% by weight of silver powder, filling the mixed powder into a mold, and then pressing the mixture and sintering in an inert atmosphere.
(g/cc)density
(g / cc)
(shore)Hardness
(shore)
(kg/cm2)Flexural strength
(kg / cm2)
(μΩcm)Resistivity
(μΩcm)
표 1에 도시된 바와 같이, 본 발명의 실시예 1에 의해 제조된 이종접합 브러쉬는 종래의 방법에 의해 제조된 은 브러쉬 비해 물성 및 내구성이 우수하였으며, 이종 금속 접합 상태가 매우 양호하여 선박 추진기 스크류 샤프트에 사용가능한 브러쉬를 얻을 수 있었다.
As shown in Table 1, the heterojunction brush manufactured by Example 1 of the present invention had superior physical properties and durability compared to the silver brush produced by the conventional method, and the heterogeneous metal bonding state was very good, so that the ship propeller screw A brush usable on the shaft was obtained.
<실시예 2~4>
<Examples 2-4>
동 분말 90중량%와, 흑연 분말 10중량%을 혼합한 1차혼합분말을 금형의 마모 한계선까지 충전하고, 은 분말 56중량%, 흑연 분말 37중량%와, 내 마모성을 향상시키기 위한 첨가제로서 망간 분말 7중량%을 혼합한 2차혼합분말을 1차혼합분말이 충전된 금형 위에 충전하였다. 1,2차혼합분말의 충전이 완료된 후, 성형 압 1 Ton/cm2 로 가압 성형을 한 후 성형체를 각각 700℃, 800℃ 및 900℃의 온도에서 각각 24시간, 23시간, 22시간 동안 불활성 분위기에서 열처리하여 이종접합 브러쉬용 소결체를 제조하였다.A primary mixed powder containing 90% by weight of copper powder and 10% by weight of graphite powder was filled to the wear limit line of the mold, and 56% by weight of silver powder, 37% by weight of graphite powder, and manganese as an additive to improve wear resistance. A secondary mixed powder containing 7% by weight of powder was charged on a mold filled with the primary mixed powder. After the filling of the 1st and 2nd mixed powder is completed, it press-molded by the molding pressure of 1 Ton / cm <2> , and inactivated the molded object for 24 hours, 23 hours, and 22 hours at the temperature of 700 degreeC, 800 degreeC, and 900 degreeC, respectively. Heat treatment in an atmosphere to prepare a sintered body for a heterojunction brush.
상기 실시예 2~4에 따른 각각의 브러쉬들의 내 수명성(내 마모성)을 평가한 결과, 전반적으로 양호한 내구성을 가지고 있으나, 특히 700℃온도에서 열처리하여 제조된 실시예 2의 이종접합 브러쉬의 내 수명성이 가장 우수하게 나타남을 알 수 있다.As a result of evaluating the life resistance (wear resistance) of each of the brushes according to Examples 2 to 4, the overall durability is good, but especially in the heterojunction brush of Example 2 manufactured by heat treatment at 700 ℃ temperature It can be seen that the lifespan is the best.
아래의 표 2는 본 발명의 실시예 2 내지 4에 따라 서로 다른 소결온도에서 제조된 이종접합 브러쉬들의 특성을 나타낸 비교표이다.Table 2 below is a comparison table showing the properties of heterojunction brushes produced at different sintering temperatures according to Examples 2 to 4 of the present invention.
(g/cc)density
(g / cc)
(shore)Hardness
(shore)
(kg/cm2)Flexural strength
(kg / cm2)
(μΩcm)Resistivity
(μΩcm)
위와 같은 실시예 이외에도 여러가지로 실험한 결과, 상기 1차혼합분말을 충전하는 금형의 기준선은 전체 충전량의 2/3 내지 4/5의 범위내에서 설정하는 것이 바람직한 것으로 밝혀졌다. 또한, 열처리 및 소결단계는온도와 재료성분에 따라 22시간 ~ 26시간 내에서 조절 가능한 것으로 확인되었다.
As a result of various experiments in addition to the above examples, it was found that the baseline of the mold filling the primary mixed powder is preferably set within a range of 2/3 to 4/5 of the total filling amount. In addition, the heat treatment and sintering step was found to be adjustable within 22 to 26 hours depending on the temperature and material composition.
<비교예>
<Comparative Example>
동 분말 80중량%와, 흑연 분말 20중량%을 혼합한 1차호합분말을 금형의 마모 한계선까지 충전하고, 은 분말 80중량%, 흑연 분말 14중량%와, 이종 금속 접합을 위한 첨가제 주석(Sn) 분말 3중량%을 혼합한 2차혼합분말을 1차혼합분말이 충전된 금형 위에 충전하였다. 1,2차혼합분말이 금형에 모두 충전되면, 성형 압 1 Ton/cm2 로 가압 성형을 행한 후 성형체를 800℃의 온도에서 24시간 동안 불활성 분위기에서 열처리하여 이종접합 브러쉬용 소결체를 제조하였다. 즉, 실시예 1에서 첨가제로 사용된 망간 분말 대신에 주석 분말을 사용하였다.A primary mixing powder containing 80% by weight of copper powder and 20% by weight of graphite powder was filled to the wear limit line of the mold, 80% by weight of silver powder, 14% by weight of graphite powder, and additive tin (Sn) for joining dissimilar metals. A secondary mixed powder containing 3% by weight of powder) was charged onto a mold filled with the primary mixed powder. When the first and second mixed powders were filled in the mold, pressure molding was performed at a molding pressure of 1 Ton / cm 2, and the molded bodies were heat-treated in an inert atmosphere at a temperature of 800 ° C. for 24 hours to prepare a sintered body for heterojunction brushes. That is, tin powder was used instead of manganese powder used as an additive in Example 1.
아래의 표 3은 비교예에 의해 제조된 이종접합 브러쉬와 실시예 1의 설명에서 대비한 은 브러쉬의 특성을 나타낸 표이다.Table 3 below is a table showing the characteristics of the silver brush in contrast to the heterojunction brush prepared in Comparative Example and the description of Example 1.
(g/cc)density
(g / cc)
(shore)Hardness
(shore)
(kg/cm2)Flexural strength
(kg / cm2)
(μΩcm)Resistivity
(μΩcm)
표 3에 도시된 바와 같이, 본 발명의 비교예에 의해 제조된 이종접합 브러쉬는 종래의 방법에 의해 제조된 은 브러쉬 비해 밀도 및 경도는 우수하였으나, 이종금속을 접합하기 위하여 사용된 주석(Sn)에 의하여 스웨팅(Sweating) 현상, 즉 주석이 다른 소재와 혼합되지 못하고 돌출되어 나오는 현상이 발생 되어 이종접합 브러쉬의 접합 상태가 불량한 것으로 나타났다. As shown in Table 3, the heterojunction brush produced by the comparative example of the present invention had better density and hardness than the silver brush produced by the conventional method, but was used for bonding dissimilar metals (Sn). Due to the sweating phenomenon, that is, the tin is not mixed with other materials and protrudes, resulting in a poor bonding state of the heterojunction brush.
도 2는 본 발명에 의해 제조된 이종접합 브러쉬를 나타낸 정면도이고, 도 3은 도 2의 브러쉬의 측면도로서, 2차 혼합분말 소결체(10)에 접합된 1차 혼합분말 소결체(20) 위에 전기연결선(30)과 결합단자(40)가 연결된 것이 도시되어 있다.FIG. 2 is a front view illustrating a heterojunction brush manufactured by the present invention, and FIG. 3 is a side view of the brush of FIG. 2, and an electrical connection line is formed on the primary mixed powder sintered
위의 실시예 외에도 여러 가지로 실험한 결과, 1차 혼합분말은 동 분말 80~90중량%와, 흑연 분말 10~20중량%, 2차 혼합분말은 은(Ag) 분말 40~90중량%와, 흑연(graphite) 분말 9~50중량%와, 망간(Mn) 분말 1~10중량%로 하고, 성형 압은 0.5~1.5 Ton/cm2 로 하며, 700℃~900℃의 온도에서 22시간 ~ 26시간 동안 불활성 분위기에서 열처리 및 소결하고, 상기 1차혼합분말을 충전하는 금형의 기준선은 전체 충전량의 2/3 내지 4/5의 범위내에서 설정하는 것이 바람직한 것으로 밝혀졌다.In addition to the above examples, as a result of various experiments, the primary mixed powder was 80 to 90% by weight of copper powder, the graphite powder was 10 to 20% by weight, and the secondary mixed powder was 40 to 90% by weight of silver (Ag) powder. , 9 to 50% by weight of graphite powder and 1 to 10% by weight of manganese (Mn) powder, the molding pressure is 0.5 to 1.5 Ton / cm 2 , 22 hours ~ at a temperature of 700 ℃ ~ 900 ℃ ~ It has been found that the baseline of the mold heat-treated and sintered in an inert atmosphere for 26 hours and filling the primary mixed powder is preferably set within the range of 2/3 to 4/5 of the total filling amount.
본 발명에 의해 제조된 이종접합 브러쉬는 은에 비하여 상대적으로 저가인 동의 재료를 더 많이 사용하여 이종접합 형태로 제조함으로써 고가인 은을 전량 사용하여 제조하여 선박 추진기 스크류의 샤프트에 사용하는 종래의 은 브러쉬에 비해 소재 원가를 약 20% 이상 절감하며, 내마모성 및 내구성을 향상시키는 효과가 있다.The heterojunction brush produced by the present invention is manufactured in the form of heterojunction using a relatively inexpensive copper material compared to silver, and is manufactured using all of the expensive silver to use for the shaft of the ship propeller screw. It saves more than 20% of the cost of materials compared to brushes, and improves wear resistance and durability.
본 명세서에 기재된 본 발명의 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시예에 관한 것이고, 발명의 기술적 사상을 모두 포괄하는 것은 아니므로, 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.The embodiments of the present invention described in the present specification and the configurations shown in the drawings relate to the most preferred embodiments of the present invention and are not intended to encompass all of the technical ideas of the present invention so that various equivalents It should be understood that water and variations may be present.
위에서는 선박 추진기 스크류 샤프트에 사용하는 것으로서, 은을 주성분으로 하는 브러쉬를 대체할 수 있는 이종접합 브러쉬 및 그 제조방법에 대하여 실시예를 들어 설명하였으나, 본 발명의 이종접합 브러쉬는 선박 추진기 샤프트용에 한정되지 않으며, 전기적 접촉을 매개하는 부품, 즉 모터 브러쉬나 발전기 브러쉬 등 다른 전기전자장치에도 사용할 수 있음은 물론이다.In the above, the heterojunction brush and the manufacturing method thereof, which are used in the ship propeller screw shaft, which can replace the brush containing silver as a main component, have been described by way of example, but the heterojunction brush of the present invention is applied to the ship propeller shaft. The present invention is not limited thereto, and may be used in other electrical and electronic devices such as motor brushes or generator brushes.
따라서, 본 발명은 상술한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 권리범위 내에 있게 된다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. , And such changes are within the scope of the claims.
10 : 2차혼합분말 소결체
20 : 1차혼합분말 소결체
30 : 연결선
40 : 결합단자10: secondary mixed powder sintered body
20: primary mixed powder sintered body
30: Connecting cable
40: coupling terminal
Claims (4)
1차혼합분말을 금형의 기준선까지 충전하는 1차충전단계;
은 분말 40~90중량%와, 흑연 분말 9~50중량%와, 망간 분말 1~10중량%를 혼합하는 2차분말혼합단계;
금형에 충전된 상기 1차혼합분말 위에 2차혼합분말을 충전하는 2차충전단계;
성형 압 0.5~1.5 Ton/cm2 로 가압 성형하는 성형단계; 및
상기 성형체를 700℃~900℃의 온도에서 22시간~26시간 동안 불활성 분위기에서 열처리하여 소결시키는 열처리 및 소결단계로 이루어진 이종접합 브러쉬의 제조방법.A primary powder mixing step of mixing 80 to 90% by weight of copper powder and 10 to 20% by weight of graphite powder;
A primary charging step of charging the primary mixed powder to a base line of the mold;
A secondary powder mixing step of mixing 40 to 90% by weight of silver powder, 9 to 50% by weight of graphite powder, and 1 to 10% by weight of manganese powder;
A secondary charging step of charging a secondary mixed powder on the primary mixed powder filled in a mold;
A molding step of press molding at a molding pressure of 0.5 to 1.5 Ton / cm 2 ; And
Method for producing a heterojunction brush consisting of a heat treatment and a sintering step of heat-treating the molded body in an inert atmosphere for 22 hours to 26 hours at a temperature of 700 ℃ ~ 900 ℃.
상기 1차혼합분말을 금형에 충전하는 금형의 기준선은 전체 충전량의 2/3 이상인 것을 특징으로 하는 이종접합 브러쉬의 제조방법.The method of claim 1,
The base line of the mold for filling the mold with the primary mixed powder is a method for producing a heterojunction brush, characterized in that more than 2/3 of the total filling amount.
상기 금형의 기준선이 금형 전체 충전량의 2/3~4/5인 것을 특징으로 하는 이종접합 브러쉬의 제조방법.3. The method of claim 2,
The baseline of the mold is a method for producing a heterojunction brush, characterized in that 2/3 to 4/5 of the total filling amount of the mold.
상기 2차 혼합분말 소결체(10)와 상기 1차 혼합분말 소결체(20)가 제 1 항 내지 제 3 항 중 어느 한 항에 의해 제조된 것을 특징으로 하는 이종접합 브러쉬.
The electrical connection line 30 and the coupling terminal 40 are connected on the primary mixed powder sintered body 20 bonded to the secondary mixed powder sintered body 10,
Heterojunction brush, characterized in that the secondary mixed powder sintered body (10) and the primary mixed powder sintered body (20) is produced by any one of claims 1 to 3.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023715A (en) * | 1996-07-02 | 1998-01-23 | Matsushita Electric Ind Co Ltd | Electric slide contact material and motor using it |
| JPH11187624A (en) * | 1997-12-19 | 1999-07-09 | Matsushita Electric Ind Co Ltd | Metal brush |
| KR100225809B1 (en) * | 1996-12-24 | 1999-10-15 | 에릭 발리베 | Method and apparatus for controlling operation of sequential filter in diesel engine |
| US20030127941A1 (en) * | 2001-12-26 | 2003-07-10 | Tris Inc. | Metal-graphite brush |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023715A (en) * | 1996-07-02 | 1998-01-23 | Matsushita Electric Ind Co Ltd | Electric slide contact material and motor using it |
| KR100225809B1 (en) * | 1996-12-24 | 1999-10-15 | 에릭 발리베 | Method and apparatus for controlling operation of sequential filter in diesel engine |
| JPH11187624A (en) * | 1997-12-19 | 1999-07-09 | Matsushita Electric Ind Co Ltd | Metal brush |
| US20030127941A1 (en) * | 2001-12-26 | 2003-07-10 | Tris Inc. | Metal-graphite brush |
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