KR20010045023A - manufacturing method of synchronizer ring - Google Patents

manufacturing method of synchronizer ring Download PDF

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Publication number
KR20010045023A
KR20010045023A KR1019990048122A KR19990048122A KR20010045023A KR 20010045023 A KR20010045023 A KR 20010045023A KR 1019990048122 A KR1019990048122 A KR 1019990048122A KR 19990048122 A KR19990048122 A KR 19990048122A KR 20010045023 A KR20010045023 A KR 20010045023A
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South Korea
Prior art keywords
forging
synchronizer ring
manufacturing
heat treatment
powder
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KR1019990048122A
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Korean (ko)
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KR100364267B1 (en
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정림호
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이계안
현대자동차 주식회사
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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
    • B22F3/17—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by forging
    • 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
    • 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
    • B22F3/24—After-treatment of workpieces or articles
    • 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
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

PURPOSE: A synchronizer ring manufacturing method simplifies forging and heat treatment works to reduce manufacturing cost. CONSTITUTION: A manufacturing method comprises a powder mixing process(P100), a molding body manufacturing process(P200), a sintering process(P300), a hot forging process(P400), a high frequency heat treatment process(P500) and a spray coating process(P600). The powder mixing process(P100) is to mix powder of sinter forging material. The molding body manufacturing process(P200) is to manufacture a molding body with density of 6.5g/cm3 by pressure of 500t using mixed powder. The sintering process(P300) is to sinter the manufactured molding body under 1120°C±10°C in the atmosphere of 95% N2/5% H2. The hot forging process(P400) is to make the sintered molding body to hot forged product of 7.5g/cm3 by a single forging work of pressure of 500t. The high frequency heat treatment process(P500) is to leave the mold body in 83 0°C±10°C for 0.1-0.3 second and temper the molding body in 150°C for 90 minutes. The spray coating process(P600) is to spray molybdenum only on the synchronizer ring part of the mold body.

Description

싱크로나이저 링의 제조방법{manufacturing method of synchronizer ring}Manufacturing method of synchronizer ring

본 발명은 차량용 동기장치의 싱크로나이저 링(synchronizer ring)의 제조방법에 관한 것으로서, 더욱 상세하게는 소결 단조재를 이용하여 소결 단조한 다음 고주파 열처리하여 싱크로나이저 링을 제조함으로써 단조작업 및 열처리작업을 단순화시켜 제조원가를 절감할 수 있도록 하는 싱크로나이저 링의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a synchronizer ring of a vehicle synchronizer, and more particularly, to forging and heat treatment by producing a synchronizer ring by sintering and forging using a sintered forging material and then subjected to high frequency heat treatment. The present invention relates to a method of manufacturing a synchronizer ring to simplify the manufacturing cost.

일반적으로 차량용 수동 변속기의 기어 물림 방식에는 섭동 기어식, 상시 물림식, 동기 물림식이 있는데, 최근의 수동 변속기는 대개 섭동 물림식과 상시 물림식의 단점을 보완할 수 있도록 설계된 동기 물림식을 주로 채택하고 있다.In general, there are perturbation gears, constant bites, and synchronous bites in the gear biting method of a manual transmission for a vehicle. In recent years, the manual transmission mainly adopts a synchronous bite type designed to compensate for the disadvantages of perturbation and constant bite. have.

상기한 동기물림식은 주축상에 싱크로나이저 허브가 스플라인 결합되어 주축과 일체로 회전이 이루어지며, 이 싱크로나이저 허브의 외주면 기어부에는 축방향으로 이동 가능하도록 슬리브가 치합된다.In the above-described synchronous rim, the synchronizer hub is splined on the main shaft to rotate integrally with the main shaft, and the sleeve is engaged with the gear part of the outer peripheral surface of the synchronizer hub to move in the axial direction.

그리고, 상기한 싱크로나이저 허브의 양측에는 상기한 슬리브와 선택적으로 치합되는 클러치 기어와 결합되는 스피드 기어가 배치되며, 이 클러치 기어의 내측에 형성되는 코운부에는 동기시 동기 작용을 수행하는 싱크로나이저 링이 배치되어 이루어진다.A speed gear coupled to the clutch gear selectively engaged with the sleeve is disposed on both sides of the synchronizer hub, and a synchronizer ring for synchronizing at the synchronous part is formed in the corner portion formed inside the clutch gear. This is done by placing.

이와 같은 싱크로나이저 링은 승용차종의 경우 황동 단조재를 사용하여 연속주조 또는 압출 성형하고 있으며, 상용 대형 차종의 경우에는 자체의 강도 및 강성이 요구되므로 스틸 냉간 단조재를 사용하여 성형하고 있다.Such synchronizer rings are continuously cast or extruded using brass forgings for passenger cars. In the case of commercial large vehicles, their strength and rigidity are required, so they are molded using steel cold forgings.

특히, 스틸 냉간 단조재를 통해 제조된 싱크로나이저 링은 치형부의 강도를 위해 침탄 열처리 공정을 거치게 되며, 내주 마찰면은 마찰특성을 높이기 위해 몰리브덴(Mo)을 용사 코팅하고 있다.In particular, the synchronizer ring manufactured by cold forging steel is subjected to a carburizing heat treatment process for the strength of the teeth, the inner friction surface is thermally coated with molybdenum (Mo) to increase the friction characteristics.

그런데, 상술한 바와 같이 스틸 냉간 단조재를 이용한 싱크로나이저 링의 제조방법은 냉간 단조작업으로 인해 단조용량이 커야 하므로 전체 설비가 상대적으로 커지게 되고, 또한 하나의 싱크로나이저 링을 제조하기 위해서는 다수 번의 단조작업이 요구되므로 전체 가공공정이 복잡해짐은 물론 가공시간이 길어져 제조원가를 증가시키게 되는 문제점이 있다.However, as described above, the manufacturing method of the synchronizer ring using the steel cold forging material has a large forging capacity due to the cold forging operation, so that the entire equipment becomes relatively large, and in order to manufacture a single synchronizer ring, Since the forging operation is required, there is a problem in that the overall machining process is complicated and the machining time is increased to increase the manufacturing cost.

또한, 침탄 열처리 후 싱크로나이저 링의 변형량이 심함에 따라 열처리전에는 반드시 싱크로나이저 링의 치형부를 별도의 지그(jig)로 하나씩 고정한 상태에서 열처리를 해야하므로, 열처리 작업이 번잡해짐은 물론 열처리 작업시간이 길어져 제조원가를 증가시키게 되는 문제점이 있다.In addition, since the deformation of the synchronizer ring after carburizing heat is severe, the heat treatment must be carried out in a state in which the teeth of the synchronizer ring are fixed one by one with a separate jig, so that the heat treatment work becomes complicated and the heat treatment time is long. There is a problem in that it increases the manufacturing cost.

따라서, 본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로서, 소결 단조재를 이용하여 소결 단조한 다음 고주파 열처리하여 싱크로나이저 링을 제조함으로써 단조작업 및 열처리작업을 단순화시켜 제조원가를 절감할 수 있도록 하는 싱크로나이저 링의 제조방법을 제공하는 데 그 목적이 있다.Therefore, the present invention has been made in view of the above problems, by sinter forging using a sintered forging material and then induction heat treatment to produce a synchronizer ring to simplify the forging work and heat treatment work to reduce the manufacturing cost It is an object of the present invention to provide a method of manufacturing a synchronizer ring.

도 1은 본 발명의 실시예에 따른 싱크로나이저 링의 정면도.1 is a front view of a synchronizer ring in accordance with an embodiment of the present invention.

도 2는 도 1의 A-A선 단면도.2 is a cross-sectional view taken along the line A-A of FIG.

도 3은 본 발명의 실시예에 따른 싱크로나이저 링의 제작공정을 보인 블록도.Figure 3 is a block diagram showing a manufacturing process of the synchronizer ring according to an embodiment of the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : 싱크로나이저 링 3 : 마찰부1: synchronizer ring 3: friction part

5 : 치형부 7 : 몰리브덴 적층 피막5: tooth portion 7: molybdenum laminated film

P100 : 분말혼합 공정 P200 : 성형체 제작공정P100: Powder Mixing Process P200: Molding Process

P300 : 소결 공정 P400 : 열간 단조 공정P300: Sintering Process P400: Hot Forging Process

P500 : 열처리 공정 P600 : 용사공정P500: Heat Treatment Process P600: Spraying Process

상기와 같은 목적을 달성하기 위한 본 발명에 따른 싱크로나이저 링의 제조방법은 소결 단조재의 분말을 혼합하는 분말혼합 공정과, 혼합된 분말을 이용하여 500ton 압력으로 6.5g/cm3밀도의 성형체를 제작하는 성형체 제작 공정과, 제작된 성형체를 1120℃ ± 10℃로 95% N2/ 5% H2분위기에서 소결시키는 소결 공정과, 소결된 성형체를 500ton 압력의 1회 단조작업을 통해 7.5g/cm3의 열간 단조품을 제작하는 열간단조 공정과, 830℃ ±10℃에서 0.1~0.3초 유지후 150℃ 90분 소려처리 하는 고주파 열처리 공정과, 성형체의 싱크로나이저 링부위만 Mo 용사처리하는 용사공정을 포함하는 특징이 있다.Method for producing a synchronizer ring according to the present invention for achieving the above object is to produce a molded body of 6.5g / cm 3 density at 500ton pressure using a powder mixing process of mixing the powder of the sintered forging material, and the mixed powder 7.5g / cm through the process of forming a molded body, the sintering process of sintering the produced molded body at 95% N 2 /5% H 2 atmosphere at 1120 ° C ± 10 ° C, and once forging at 500ton pressure The hot forging process for manufacturing the hot forging of 3 , the high frequency heat treatment process for 150 minutes 90 minutes after maintaining 0.1 ~ 0.3 seconds at 830 ° C ± 10 ° C, and the spraying process for Mo spraying only the synchronizer ring of the molded body There are features to include.

또한, 상기 분말혼합 공정은 0.6~1.0의 탄소(C), 0.2~0.3의 망간(Mn), 1.8~2.0의 니켈(Ni), 0.5~0.6의 몰리브덴(Mo), 잔량의 철(Fe)로 구성된 분말을 혼합하는 것으로 이루어지는 특징이 있으며, 상기 열처리 공정은 원형 가열관을 이용하여 치형부만이 가열될 수 있도록 하는 특징이 있다.In addition, the powder mixing process is made of carbon (C) of 0.6 to 1.0, manganese (Mn) of 0.2 to 0.3, nickel (Ni) of 1.8 to 2.0, molybdenum (Mo) of 0.5 to 0.6, the remaining amount of iron (Fe) There is a feature consisting of mixing the powder is configured, the heat treatment process is characterized in that only the teeth can be heated using a circular heating tube.

이하, 본 발명의 실시예를 첨부도면에 의거 더욱 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

도 1 및 도 2는 본 발명에 싱크로나이저 링(1)을 보인 것으로서, 이 싱크로나이저 링(1)은 중심에 클러치 기어의 코운부와 결합되기 위한 테이퍼형의 마찰부(3)가 형성되고, 외주면에는 클러치 허브의 외주상에서 이동하는 슬리브에 클러치 기어와 함께 치합되기 위한 치형부(5)가 형성되며, 내경의 마찰부(3)에는 마찰력을 증대시키기 위한 몰리브덴(Mo)이 용사되어 몰리브덴 적층 피막(7)을 형성하게 된다.1 and 2 show the synchronizer ring 1 in the present invention, the synchronizer ring 1 is formed in the center of the tapered friction portion (3) for engaging with the corner of the clutch gear, Teeth 5 are formed on the outer circumference of the clutch hub to be engaged with the clutch gear in a sleeve moving on the outer circumference of the clutch hub, and molybdenum (Mo) is sprayed on the friction part 3 of the inner diameter to increase the friction force. (7) is formed.

또한, 이 싱크로나이저 링(1)은 소결 단조재로 이루어지는 것으로, 0.6~1.0의 탄소(C), 0.2~0.3의 망간(Mn), 1.8~2.0의 니켈(Ni), 0.5~0.6의 몰리브덴(Mo), 잔량의 철(Fe)로 구성된다.In addition, the synchronizer ring 1 is made of a sintered forging material, and includes carbon (C) of 0.6 to 1.0, manganese (Mn) of 0.2 to 0.3, nickel (Ni) of 1.8 to 2.0, and molybdenum of 0.5 to 0.6 ( Mo) and the remaining amount of iron (Fe).

도 3은 상술한 소결 단조재로 이루어지는 싱크로나이저 링(1)을 제조하기 위한 본 발명의 실시예에 따른 싱크로나이저 링 제조공정을 보인 블록도로서, 분말 혼합 공정(P100)과 성형체 제작공정(P200), 소결 공정(P300), 열간단조 공정(P400), 고주파 열처리 공정(P500), 몰리브덴 용사 공정(P600)을 포함하게 된다.Figure 3 is a block diagram showing a synchronizer ring manufacturing process according to an embodiment of the present invention for manufacturing the synchronizer ring (1) made of the above-mentioned sintered forging, powder mixing process (P100) and molded body manufacturing process (P200 ), The sintering process (P300), hot forging process (P400), high frequency heat treatment process (P500), molybdenum thermal spraying process (P600).

이와 같은 소결 단조재를 이용한 싱크로나이저 링(1)의 제조과정을 상세히 살펴보면 다음과 같다.Looking at the manufacturing process of the synchronizer ring (1) using such a sintered forging in detail as follows.

우선, 0.6~1.0의 탄소(C), 0.2~0.3의 망간(Mn), 1.8~2.0의 니켈(Ni), 0.5~0.6의 몰리브덴(Mo), 잔량의 철(Fe)의 분말을 혼합한다.(P100)First, powders of carbon (C) of 0.6 to 1.0, manganese (Mn) of 0.2 to 0.3, nickel (Ni) of 1.8 to 2.0, molybdenum (Mo) of 0.5 to 0.6, and residual amounts of iron (Fe) are mixed. (P100)

그리고, 상기 혼합된 분말을 이용하여 500ton 압력으로 6.5g/cm3밀도의 성형체를 제작한다.(P200)Then, by using the mixed powder to produce a molded body of 6.5g / cm 3 density at 500ton pressure. (P200)

그 후, 상기 제작된 성형체를 1120℃ ± 10℃로 95% N2/ 5% H2분위기에서 소결시킨다.(P300)Thereafter, the produced molded body is sintered at 1120 ° C. ± 10 ° C. in a 95% N 2 /5% H 2 atmosphere. (P300)

또한, 상기 소결된 성형체를 500ton 압력의 1회 단조작업을 통해 7.5g/cm3의 단조품을 제작한다.(P400)In addition, the forged product of 7.5g / cm 3 is produced through the once-forged operation of the 500 sintered molded body. (P400)

그 다음, 상기 단조품의 치형부(5)를 고주파 열처리하게 되는 바, 이때 열처리는 830℃ ±10℃에서 0.1~0.3초 유지후 150℃ 90분 소려처리 하며, 원형 가열관을 이용하여 치형부(5)만이 가열될 수 있도록 한다.(P500)Then, the forging tooth 5 of the forged product is subjected to high frequency heat treatment, in which the heat treatment is maintained at 830 ° C. ± 10 ° C. for 0.1 to 0.3 seconds and then 150 ° C. for 90 minutes, and the tooth part (using a circular heating tube) 5) Only heat up (P500)

그리고, 열처리된 단조품의 내경 마찰부(3)에 몰리브덴(Mo)을 용사 코팅하게 되는 바, 이때 용사작업은 플라즈마 스프레이 건(plasma spray gun)방식을 이용하여 열용사 한다.(P600)In addition, molybdenum (Mo) is thermally sprayed on the inner diameter friction part 3 of the heat-treated forged product, and the thermal spraying operation is thermally sprayed using a plasma spray gun method (P600).

이와 같이 몰리브덴 용사가 완료되는 일련의 싱크로나이저 링(1)의 제작이 완료되며, 이렇게 소결 단조재를 이용하여 제작된 본 발명에 따른 싱크로나이저 링(1)과 종래 스틸 냉간 단조재를 이용한 싱크로나이저 링의 물성을 살펴보면 아래의 표1과 같다. 표 1에서 종래 싱크로나이저 링은 종래 스틸 냉간 단조재를 이용한 제작된 싱크로나이저 링이고, 본 발명 싱크로나이저 링은 본 발명에서 소결 단조재를 이용하여 제작된 싱크로나이저 링(1)이다.As such, the production of the series of synchronizer rings 1 in which molybdenum spraying is completed is completed, and the synchronizer ring 1 according to the present invention manufactured using the sintered forging material and the synchronizer using the conventional steel cold forging material. The physical properties of the ring are shown in Table 1 below. In Table 1, the conventional synchronizer ring is a synchronizer ring manufactured using a conventional steel cold forging material, and the synchronizer ring of the present invention is a synchronizer ring 1 manufactured using a sintered forging material in the present invention.

구분division 싱크로나이저 링 1Synchronizer Ring 1 싱크로나이저 링 2Synchronizer ring 2 재질material 냉간 단조재Cold forging 소결 단조재Sintered Forging 열처리Heat treatment 침탄Carburizing 고주파High frequency 밀도density 7.87g/cm3 7.87g / cm 3 7.5g/cm3 7.5g / cm 3 경도Hardness HV700HV700 HV700HV700

상기한 표 1에서 알 수 있듯이 소결 단조재를 이용한 싱크로나이저 링의 경우에도 기존 냉간 단조재를 이용한 경우에 비해 물성의 차이가 거의 없다는 것을 알 수 있다.As can be seen in Table 1, the synchronizer ring using the sintered forging can be seen that there is almost no difference in physical properties compared with the case of using the conventional cold forging.

이상에서 살펴본 바와 같이, 본 발명은 소결 단조재를 이용하여 소결 단조한 다음 고주파 열처리하여 싱크로나이저 링을 제조함으로써 단조작업 및 열처리작업을 단순화시켜 제조원가를 절감할 수 있게 된다.As described above, the present invention can reduce the manufacturing cost by simplifying the forging work and the heat treatment work by producing a synchronizer ring by sintering forging using a sinter forging material and then high frequency heat treatment.

본 발명은 특정의 실시예와 관련하여 도시 및 설명하였지만, 첨부 특허청구범위에 의해 나타난 발명의 사상 및 영역으로부터 벗어나지 않는 한도 내에서 다양한 개조 및 변화가 가능하다는 것을 당업계에서 통상의 지식을 가진 자라면 누구나 쉽게 알 수 있을 것이다.While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (3)

소결 단조재를 이용하여 싱크로나이저 링을 제조하는 방법에 있어서,In the method of manufacturing a synchronizer ring using a sintered forging, 소결 단조재의 분말을 혼합하는 분말혼합 공정과, 혼합된 분말을 이용하여 500ton 압력으로 6.5g/cm3밀도의 성형체를 제작하는 성형체 제작 공정과, 제작된 성형체를 1120℃ ± 10℃로 95% N2/ 5% H2분위기에서 소결시키는 소결 공정과, 소결된 성형체를 500ton 압력의 1회 단조작업을 통해 7.5g/cm3의 열간 단조품을 제작하는 열간단조 공정과, 830℃ ±10℃에서 0.1~0.3초 유지후 150℃ 90분 소려처리 하는 고주파 열처리 공정과, 성형체의 싱크로나이저 링부위만 Mo 용사처리하는 용사공정을 포함하는 것을 특징으로 하는 싱크로나이저 링의 제조방법.A powder mixing process for mixing the powder of the sintered forging material, a molded product manufacturing process for producing a molded product having a density of 6.5 g / cm 3 at 500 ton pressure using the mixed powder, and a 95% N of the produced molded product at 1120 ° C. ± 10 ° C. A sintering process for sintering in a 2 /5% H 2 atmosphere, a hot forging process for producing a hot forging product of 7.5 g / cm 3 through a once forging operation of the sintered molded body at a 500ton pressure, and a 0.1 forging temperature at 830 ° C ± 10 ° C. A method of manufacturing a synchronizer ring, comprising: a high frequency heat treatment step of performing a 150 ° C. 90 minute treatment after maintaining 0.3 seconds, and a spraying step of Mo-spraying only the synchronizer ring portion of the molded body. 제1 항에 있어서,According to claim 1, 상기 분말혼합 공정은 0.6~1.0의 탄소(C), 0.2~0.3의 망간(Mn), 1.8~2.0의 니켈(Ni), 0.5~0.6의 몰리브덴(Mo), 잔량의 철(Fe)로 구성된 분말을 혼합하는 것으로 이루어지는 것을 특징으로 하는 싱크로나이저 링의 제조방법.The powder mixing process is a powder composed of 0.6 to 1.0 carbon (C), 0.2 to 0.3 manganese (Mn), 1.8 to 2.0 nickel (Ni), 0.5 to 0.6 molybdenum (Mo), the remaining amount of iron (Fe) Method for producing a synchronizer ring, characterized in that consisting of mixing. 제1 항에 있어서,According to claim 1, 상기 열처리 공정은 원형 가열관을 이용하여 치형부만이 가열될 수 있도록 하는 것을 특징으로 하는 싱크로나이저 링의 제조방법.The heat treatment process is a method of manufacturing a synchronizer ring, characterized in that the teeth can be heated only by using a circular heating tube.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464874B1 (en) * 2002-08-31 2005-01-05 두알산업 주식회사 Do tempering jig chapter by synchronizer ring-core manufacture method for car transmisson and such method
CN117548678A (en) * 2024-01-12 2024-02-13 烟台东一粉末冶金制造有限公司 Powder metallurgy production line and production process for synchronizer gear sleeve

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DE3908989A1 (en) * 1989-03-18 1990-09-20 Sinterstahl Gmbh METHOD FOR PRODUCING A SHIFTING OR SLIDING SLEEVE FOR A VEHICLE TRANSMISSION
JPH08219174A (en) * 1995-02-13 1996-08-27 Sumitomo Electric Ind Ltd Synchronous ring for transmission and its manufacture
JPH0959702A (en) * 1995-08-23 1997-03-04 Fuji Denshi Kogyo Kk Production of sintered product
JPH10237506A (en) * 1997-02-28 1998-09-08 Toyota Motor Corp Manufacture of synchronizer ring
KR100241133B1 (en) * 1997-06-30 2000-03-02 이한중 Production method of synchronizer
KR100264906B1 (en) * 1997-08-12 2000-09-01 조용이 Manufacturing device of synchronizing for transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464874B1 (en) * 2002-08-31 2005-01-05 두알산업 주식회사 Do tempering jig chapter by synchronizer ring-core manufacture method for car transmisson and such method
CN117548678A (en) * 2024-01-12 2024-02-13 烟台东一粉末冶金制造有限公司 Powder metallurgy production line and production process for synchronizer gear sleeve
CN117548678B (en) * 2024-01-12 2024-03-08 烟台东一粉末冶金制造有限公司 Powder metallurgy production line and production process for synchronizer gear sleeve

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