KR20000046412A - Manufacture method of braking disc of carbon/carbon compounds - Google Patents
Manufacture method of braking disc of carbon/carbon compounds Download PDFInfo
- Publication number
- KR20000046412A KR20000046412A KR1019980063092A KR19980063092A KR20000046412A KR 20000046412 A KR20000046412 A KR 20000046412A KR 1019980063092 A KR1019980063092 A KR 1019980063092A KR 19980063092 A KR19980063092 A KR 19980063092A KR 20000046412 A KR20000046412 A KR 20000046412A
- Authority
- KR
- South Korea
- Prior art keywords
- carbon
- pitch
- preform
- mixture
- brake disc
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 13
- 150000001721 carbon Chemical class 0.000 title abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 30
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 40
- 229910052799 carbon Inorganic materials 0.000 claims description 39
- 239000002131 composite material Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000010000 carbonizing Methods 0.000 claims description 6
- 238000000280 densification Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 239000011295 pitch Substances 0.000 description 18
- 239000002783 friction material Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000010425 asbestos Substances 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0023—Shaping by pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Ceramic Products (AREA)
Abstract
Description
본 발명은 탄소/탄소 복합재료 브레이크 디스크 제조방법에 관한 것으로, 보다 상세하게는 자동차 등의 브레이크 디스크로서 적합한 마찰계수가 높고 열전도성 및 제동 안정성이 우수한 탄소/탄소 복합재료 브레이크 디스크를 제조하는 방법에 관한 것이다.The present invention relates to a method for manufacturing a carbon / carbon composite brake disc, and more particularly, to a method for manufacturing a carbon / carbon composite brake disc having a high coefficient of friction and excellent thermal conductivity and braking stability as a brake disc for an automobile. It is about.
일반적으로 자동차 등의 브레이크 디스크로 사용되는 마찰재료로는 석면을 주성분으로 하는 석면계 마찰재가 주로 사용되어왔다. 그러나 최근에는 석면이 인체에 미치는 영향이 문제가 되어 석면을 함유하지 않는 마찰재료가 개발되어 오고 있다. 석면을 함유하지 않는 마찰재로는 스틸 단섬유를 사용한 반금속계 마찰재가 실용화되었는 바, 이 마찰재는 스틸 섬유를 보강재로 하고, 다량의 흑연 분말과 금속 분말을 첨가하여 페놀 수지계의 결합제를 이용하여 가열 성형 하는 것이다. 이 마찰재의 특징은 내마모성이 우수하지만 이 반금속계 마찰재는 고온 제동시 발화하는 문제가 있고 또 마찰재 중에 포함되는 스틸 단섬유가 상대 회전체의 마모를 야기하는 문제가 있었다.In general, asbestos-based friction material mainly containing asbestos has been mainly used as a friction material used in brake discs for automobiles. Recently, however, the influence of asbestos on the human body has become a problem, and friction materials containing no asbestos have been developed. As a friction material that does not contain asbestos, a semimetal friction material made of short steel is put to practical use. The friction material is steel fiber as a reinforcing material, and a large amount of graphite powder and metal powder are added, followed by heat molding using a phenolic resin binder. It is. Although the characteristics of this friction material are excellent in wear resistance, this semimetal friction material has a problem of igniting at high temperature braking and the problem that the short steel fibers contained in the friction material cause wear of the relative rotating body.
따라서 스틸을 적게 함유하는 저스틸계 마찰재 또는 스틸을 포함하지 않는 논스틸계 마찰재가 개발 되었다.Therefore, low steel friction materials containing less steel or non-steel friction materials not containing steel have been developed.
그러나 상기의 마찰재도 제동시 소음이 발생하기 쉽고, 경우에 따라 제동시 차량의 진동을 동반하여 운전자에게 불안감을 주는 문제가 있었다.However, the friction material is also easy to generate noise when braking, and in some cases, there is a problem that gives the driver anxiety accompanied by vibration of the vehicle.
상기한 문제점을 해소하기 위한 본 발명은, 마찰계수가 높고 열전도성 및 제동 안정성이 우수한 탄소/탄소 복합재료 브레이크 디스크의 제조방법을 제공함에 그 목적이 있다.The present invention for solving the above problems is an object of the present invention to provide a method for producing a carbon / carbon composite brake disc having a high coefficient of friction, excellent thermal conductivity and braking stability.
상기한 목적을 달성하기 위한 본 발명은, 절단된 탄소섬유, 핏치분말의 혼합물로 구성되는 적어도 하나의 마찰부분과 상기 혼합물과 탄소직물 프리프레그를 교대로 적층하여 구성된 구조부분으로 이루어진 프리폼을 성형하는 단계; 프리폼을 성형용 몰드에 장입하여 프레싱하므로써 성형체를 제조하는 단계; 성형체를 탄화시키는 단계; 탄화체를 원하는 밀도를 얻기 위해 핏치를 함침하고 이를 탄화시키는 공정을 반복 수행하는 밀도화 단계를 포함하여 구성되는 탄소/탄소 복합재료 브레이크 디스크 제조방법을 제공한다.The present invention for achieving the above object, to form a preform consisting of at least one friction portion composed of a mixture of cut carbon fiber, pitch powder and a structural portion composed by alternately stacking the mixture and carbon fabric prepreg step; Preparing a molded body by charging the preform into a molding mold and pressing the preform; Carbonizing the molded body; It provides a carbon / carbon composite brake disc manufacturing method comprising a densification step of repeating the process of impregnating the pitch and carbonizing the carbon to obtain the desired density.
여기서 상기 혼합물은 0.5~100mm의 탄소섬유가 10~70중량%, 1.5mm이하의 입도를 갖는 분말핏치 30~60중량%로 혼합된 것을 사용하는 것이 바람직하다.Here, it is preferable to use a mixture of 30 to 60% by weight of the powder pitch having a particle size of less than 10 to 70% by weight, carbon fiber of 0.5 to 100mm.
또한, 상기 밀도화 단계는 상압의 불활성분위기하에서 700~1200℃의 온도에서 수행되고, 최종 열처리는 상압하의 불활성분위기하에서 2400℃ 이상의 온도에서 수행되게 하는 것이 바람직하다.In addition, the density step is carried out at a temperature of 700 ~ 1200 ℃ under an inert atmosphere of atmospheric pressure, the final heat treatment is preferably carried out at a temperature of 2400 ℃ or more under an inert atmosphere under atmospheric pressure.
이와 같은 본 발명의 브레이크 디스크 제조방법에 따라 제조된 탄소/탄소 복합재 브레이크 디스크는 순간 제동 특성 및 고온 환경에서 적절한 열적, 구조적, 마찰특성이 지니고 있어 특히 고속차량 및 경주용 자동차의 브레이크 디스크의 요구되는 특성에 적합하게 된다.The carbon / carbon composite brake discs manufactured according to the brake disc manufacturing method of the present invention have instantaneous braking characteristics and suitable thermal, structural, and frictional characteristics in a high temperature environment, and thus are particularly required for brake discs of high speed vehicles and racing cars. It becomes suitable for a characteristic.
도 1은 본 발명에 따른 제조공정도,1 is a manufacturing process diagram according to the present invention,
도 2는 본 발명의 프리폼 구조도이다.2 is a structural diagram of the preform of the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
A : 마찰부분 B : 구조부분A: friction part B: structural part
1 : 핏치 2 : 탄소섬유1: pitch 2: carbon fiber
3 : 탄소직물3: carbon fabric
이하, 본 발명을 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.
도 1은 본 발명에 따른 제조공정도이고, 도 2는 본 발명에 따른 탄소/탄소 복합재료 브레이크 디스크의 프리폼의 구조를 나타낸 것으로, 우선 그 구조에 대하여 설명하면, 실제 마찰을 일으키는 마찰부분(A)과 브레이크 디스크를 구조적으로 안정하게 유지해 주는 구조부분(B)으로 이루어져 있는데, 구조부분(B)을 중심으로 양쪽면이 마찰부분(A)으로 구성되어 있다. 여기에서 마찰부분(A)은 핏치분말(1)과 무질서하게 배향된 짧은 탄소섬유(2)로 이루어져 있으며, 구조부분(B)은 탄소직물(3) 프리프레그와, 핏치분말(1)과 탄소섬유(2)로 된 혼합물이 교대로 적층된 구조로 되어 있다.1 is a manufacturing process diagram according to the present invention, Figure 2 shows the structure of the preform of the carbon / carbon composite brake disk according to the present invention. First, the structure will be described, the friction portion (A) causing actual friction And a structural part (B) which keeps the brake disc structurally stable, and both sides of the structural part (B) are composed of a friction part (A). Here, the friction portion (A) consists of a pitch powder (1) and a short carbon fiber (2) disorderly oriented, the structural portion (B) is a carbon fabric (3) prepreg, the pitch powder (1) and carbon The mixture of the fibers 2 is laminated in an alternating manner.
이때 상기 구조부분(B)은 탄소직물(3) 프리프레그 20~85중량%에 절단된 탄소섬유(2) 10 내지 70 중량%, 핏치분말(1) 30 내지 60중량%로 이루어지며, 마찰부분(A)은 절단된 탄소섬유(2) 10 내지 70중량%, 핏치분말(1) 30 내지 60중량%의 비율로 이루어져 있다.At this time, the structural part (B) is made of carbon fiber (3) pre-preg 20 to 85% by weight cut carbon fiber (2) 10 to 70% by weight, pitch powder (1) 30 to 60% by weight, friction part (A) consists of 10 to 70% by weight of the cut carbon fiber (2), 30 to 60% by weight of the pitch powder (1).
상기 절단된 탄소섬유(2)의 길이는 0.5 내지 100mm, 핏치분말의 크기는 1.5mm이하인 것이 바람직하다.The length of the cut carbon fiber 2 is 0.5 to 100mm, the size of the pitch powder is preferably 1.5mm or less.
그리고 탄소직물(3) 프리프레그를 만드는 탄소직물의 조직은 평직, 주자직의 형태가 가능하다.And carbon fabric (3) The organization of the carbon fabric to make the prepreg can be in the form of plain weave, runner weave.
상기한 바와 같이 구성된 탄소/탄소 복합재료 브레이크 디스크를 제조하기 위한 방법은 도 1과 같이 절단된 탄소섬유, 핏치분말의 혼합물과 탄소직물 프리프레그를 교대로 적층하여 프리폼을 성형하는 단계, 프리폼을 성형용 몰드에 장입하여 프레싱하므로써 성형체를 제조하는 단계, 성형체를 탄화시키는 단계, 탄화체를 원하는 밀도를 얻기 위해 반복 수행하는 밀도화 단계를 포함하여 구성되는 바, 이를 상세하게 설명한다.Method for manufacturing a carbon / carbon composite brake disk configured as described above is a step of forming a preform by alternately laminating the mixture of the cut carbon fiber, pitch powder and carbon fabric prepreg as shown in Figure 1, forming a preform It comprises a step of preparing a molded body by charging and pressing in the mold for molding, carbonizing the molded body, densification step of repeatedly performing the carbonized body to obtain the desired density, which will be described in detail.
상기 프리폼을 성형하는 단계는 고온에서 열처리된 탄소섬유를 0.5 내지 100mm 길이로 절단하여 10 내지 70중량%, 핏치분말 30 내지 60%의 비율로 혼합하여 탄소직물 프리프레그와 적층하여 프리폼을 만든다. 탄소직물 프리프레그는 탄소직물상에 5 내지 60중량%의 핏치가 코팅된 상태이다. 성형체를 제조하는 단계는 상기 프리폼을 성형용 몰드에 장입하여 130 내지 400℃의 온도에서 사전 열처리한 후 가압을 실시하므로서 얻어진다. 여기서 바람직한 열처리 온도는 200 내지 350℃이다. 성형체를 탄화시키는 단계는 상기 성형체를 불활성 분위기에서 700 내지 1200℃의 온도에서 열처리하는 것으로 이루어진다. 상기 탄화체를 불활성 분위기의 대기압하에서 700 내지 1200℃의 범위 내에서 수회 함침, 탄화를 반복하는 밀도화 공정을 수행하고 2400℃ 이상의온도에서 최종 열처리를 실시하여 탄소/탄소 복합재료가 제조된다. 상기 함침시 사용되는 함침재로서는 콜타르 핏치, 석유계 핏치 등이 가능하다.In the forming of the preform, the carbon fiber heat-treated at a high temperature is cut to a length of 0.5 to 100 mm, mixed at a ratio of 10 to 70% by weight, and pitch powder 30 to 60%, and laminated with a carbon fabric prepreg to form a preform. The carbon fabric prepreg is coated with 5 to 60% by weight of pitch on the carbon fabric. The step of preparing a molded product is obtained by charging the preform into a mold for molding and pre-heating at a temperature of 130 to 400 ° C. and then pressing. Preferable heat treatment temperature here is 200-350 degreeC. Carbonizing the molded body consists of heat-treating the molded body at a temperature of 700 to 1200 ° C in an inert atmosphere. The carbon / carbon composite material is manufactured by performing a densification process of impregnating the carbonized body several times in a range of 700 to 1200 ° C. under a atmospheric pressure of an inert atmosphere and performing a final heat treatment at a temperature of 2400 ° C. or higher. As the impregnating material used during the impregnation, coal tar pitch, petroleum pitch, or the like can be used.
이하, 하기의 실시예를 통하여 본 발명의 탄소/탄소 복합재료 브레이크 디스크 제조방법을 보다 상세하게 설명한다.Hereinafter, the carbon / carbon composite brake disc manufacturing method of the present invention will be described in more detail with reference to the following examples.
실시예Example
탄소섬유 70중량%, 핏치분말 30중량%를 균일하게 혼합한 혼합물을 핏치가 코팅된 탄소직물 프리프레그와 교대로 적층하여 마찰부분과 구조부분으로 구성된 프리폼을 제조하였다. 탄소섬유는 1.0mm 이하로 절단한 것을 사용하였고 핏치분말의 입도는 0.3mm 이하의 것을 사용하였다. 상기 프리폼을 디스크 성형용 몰드에 장입하고, 열처리를 수행하여 프리폼의 온도가 200 내지 250℃에 도달하면 가압하여 성형체를 제조하였다. 성형체는 불활성 분위기하의 1기압에서 1000℃까지 열처리하여 탄화체를 제조하였고, 탄화체를 함침재인 핏치를 사용하여 상압 조건 1000℃에서 반복적으로 함침/탄화시키고 2400℃ 이상에서 최종 열처리하여 탄소/탄소 복합재료를 제조하였다.A mixture of 70 wt% carbon fiber and 30 wt% pitch powder was uniformly laminated with a pitch coated carbon fabric prepreg to prepare a preform consisting of a friction part and a structural part. Carbon fiber cut to 1.0mm or less was used, and pitch powders used were 0.3mm or less. The preform was charged into a mold for forming a disk and subjected to heat treatment to pressurize when the temperature of the preform reached 200 to 250 ° C. to manufacture a molded body. The molded body was heat-treated to 1000 ° C. at 1 atm under inert atmosphere, and carbonized carbon was repeatedly impregnated and carbonized at 1000 ° C. under normal pressure using a pitch, which is an impregnating material, and finally heat-treated at 2400 ° C. or above. The material was prepared.
비교예 1Comparative Example 1
탄소섬유로 직조된 펠트를 1000℃에서 열처리한 후 함침재인 핏치를 사용하여 800기압 이상의 가압 조건하의 1000℃에서 반복 함침, 탄화시키고 2400℃ 이하의 온도에서 최종 열처리를 실시하여 탄소/탄소 복합재료를 제조하였다.After the carbon fiber woven felt was heat-treated at 1000 ° C., the impregnated pitch was repeatedly impregnated and carbonized at 1000 ° C. under a pressurization condition of 800 atm or higher, and the final heat treatment was performed at a temperature of 2400 ° C. or lower to obtain a carbon / carbon composite material. Prepared.
비교예 2Comparative Example 2
상기 실시예 1과 동일한 방법으로 성형체를 제조하였으며, 성형체는 불활성 분위기하의 상압에서 1000℃까지 열처리하여 탄화체를 제조하였고, 탄화체를 함침재인 핏치를 사용하여 1000℃ 800기압 이상의 고압 조건에서 반복적으로 함침, 탄화시키고 2400℃ 이하의 온도에서 최종 열처리를 실시하여 탄소/탄소 복합재료를 제조하였다.A molded article was prepared in the same manner as in Example 1, and the molded article was heat-treated to 1000 ° C. under normal pressure in an inert atmosphere to prepare a carbonized article. The carbide was repeatedly used under high pressure of 1000 ° C. or higher at 800 ° C. using a pitch impregnated material. Impregnated, carbonized and subjected to final heat treatment at a temperature of 2400 ° C. or lower produced a carbon / carbon composite.
상기 실시예와 비교예 1, 비교예 2에서 제조된 탄소/탄소 복합재료의 물성을 시험한 결과를 다음 표 1에 나타내었다.The results of testing the physical properties of the carbon / carbon composites prepared in Examples and Comparative Examples 1 and 2 are shown in Table 1 below.
상기 표 1에서 볼 수 있듯이 본 발명에 따른 실시예의 경우는 비교예 1, 비교예 2 보다 높은 열전도도 값을 가져 제동시 발생되는 마찰열을 신속하게 밖으로 방출할 수 있어 브레이크 디스크의 제동 안정성을 확보할 수 있으며, 마모량은 중간값을 가지고 있으므로 마모량 부분에 있어서는 보통이라 할 수 있지만, 마찰계수는 높은값을 보이고 있어 순간 제동이 반복적으로 필요한 자동차 브레이크에 적합하다 할 수 있다.As can be seen in Table 1, the embodiment according to the present invention has a higher thermal conductivity value than that of Comparative Example 1 and Comparative Example 2, so that the frictional heat generated during braking can be quickly discharged out to secure braking stability of the brake disc. Since the wear amount has a median value, it can be said to be normal in the wear amount portion, but the friction coefficient shows a high value, which is suitable for automobile brakes requiring repeated braking.
그러므로 열전도도 특성과 연관지어 볼 때 본 발명의 탄소/탄소 복합재 브레이크 디스크는 순간 제동 특성 및 고온 환경에서 적절한 열적, 구조적, 마찰특성이 지니고 있어 특히 고속차량 및 경주용 자동차의 브레이크 디스크의 요구되는 특성에 적합하다고 볼 수 있다.Therefore, the carbon / carbon composite brake discs of the present invention, in connection with the thermal conductivity characteristics, have the appropriate thermal, structural and frictional characteristics in the instantaneous braking characteristics and the high temperature environment. It can be considered suitable for.
이상에서 설명한 바와 같이 본 발명에 의한 탄소/탄소 복합재료 브레이크 디스크는 높은 열전도도 값과 높은 마찰계수를 얻을 수 있고 금속 소결 디스크보다 내마모성이 우수하므로 디스크의 수명이 향상되고, 프리폼으로 펠트를 사용하거나 고압하에서 밀도화를 수행하는 공정보다 저렴한 비용으로 고속차량 및 경주용 차동차에 적합한 탄소/탄소 복합재료 브레이크 디스크를 생산할 수 있는 효과를 가진다.As described above, the carbon / carbon composite brake disc according to the present invention can obtain high thermal conductivity and high coefficient of friction and has better wear resistance than metal sintered discs, thereby improving the life of the discs, and using felt as a preform. It has the effect of producing carbon / carbon composite brake discs suitable for high speed vehicles and racing differentials at a lower cost than the process of densification under high pressure.
Claims (4)
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KR1019980063092A KR20000046412A (en) | 1998-12-31 | 1998-12-31 | Manufacture method of braking disc of carbon/carbon compounds |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100447840B1 (en) * | 2002-05-20 | 2004-09-08 | 주식회사 데크 | Manufacturing method for carbon-carbon composites |
KR101876054B1 (en) * | 2016-09-05 | 2018-07-09 | 한국철도기술연구원 | Carbon composite brake friction material and its manufacturing method |
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US5242746A (en) * | 1990-05-10 | 1993-09-07 | Le Carbone-Lorraine | Friction elements of composite carbon-carbon material and of differential texture |
US5609707A (en) * | 1991-09-04 | 1997-03-11 | The B. F. Goodrich Company | Carbon fiber reinforced carbon/carbon composite and method of its manufacture |
WO1998014716A1 (en) * | 1996-09-30 | 1998-04-09 | Messier-Bugatti | Preparation of textile preforms for brake discs in composite material |
KR100198153B1 (en) * | 1996-10-29 | 1999-06-15 | 추호석 | A vacuum pressure impregnation carbonization for densifying c/c composite |
KR19990053883A (en) * | 1997-12-24 | 1999-07-15 | 신현준 | Manufacturing method of carbon molded body |
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Publication number | Priority date | Publication date | Assignee | Title |
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US5242746A (en) * | 1990-05-10 | 1993-09-07 | Le Carbone-Lorraine | Friction elements of composite carbon-carbon material and of differential texture |
US5609707A (en) * | 1991-09-04 | 1997-03-11 | The B. F. Goodrich Company | Carbon fiber reinforced carbon/carbon composite and method of its manufacture |
WO1998014716A1 (en) * | 1996-09-30 | 1998-04-09 | Messier-Bugatti | Preparation of textile preforms for brake discs in composite material |
KR100198153B1 (en) * | 1996-10-29 | 1999-06-15 | 추호석 | A vacuum pressure impregnation carbonization for densifying c/c composite |
KR19990053883A (en) * | 1997-12-24 | 1999-07-15 | 신현준 | Manufacturing method of carbon molded body |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100447840B1 (en) * | 2002-05-20 | 2004-09-08 | 주식회사 데크 | Manufacturing method for carbon-carbon composites |
KR101876054B1 (en) * | 2016-09-05 | 2018-07-09 | 한국철도기술연구원 | Carbon composite brake friction material and its manufacturing method |
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