A study on the restoration method of friction, wear and fatigue performance of remanufactured crankshaft

Tominaga, Yasutoshi; Pyun, Young Sik; Kayumov, Ravil; Kim, Jun‐Hyong; Woo, Juha

doi:10.1007/s12206-013-0824-1

Cited by 17 publications

(2 citation statements)

References 6 publications

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“…There is no rupture of the lubricating film due to the geometry of the individual components, which results in uniform wear of the entire friction surface. The selected sampling point on the connecting rod pin was also chosen due to the fact that the most common place of crankshaft failure is wear in the place of the connecting rod pin [ 11 , 21 , 22 , 23 ].…”

Section: Methodsmentioning

confidence: 99%

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

et al. 2021

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The present paper analyzes the damage of surfaces at spots of frictional contact, namely, the friction nodes on a camshaft and the connecting rod pins of a crankshaft. The resulting wear of the monitored friction nodes reduces the technical life of the machines, which can lead to the decommissioning of the machine. Wear was assessed by measuring roughness and microhardness and by observing the microstructures of the materials. The results of the experiments show that the rotating parts displayed visible wear on the cams, as well as on the connecting rod pins. The experiments revealed that wear was caused by the heating of the material to a high temperature during the operation of the machine and that there was a gradual cooling and tempering of the material, which led to a reduction in the microhardness of the monitored object. Lower microhardness values can be a cause of greater wear of the monitored objects. When comparing the microhardness of the used and the new camshaft, the hardened layer of the new camshaft from secondary production has a significantly smaller thickness compared to worn cams, which leads to the finding of a different material quality compared to the original parts from primary production. This fact indicates that the wear of a new camshaft as a spare part can contribute to the shortening of the technical life of friction nodes.

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Section: Methodsmentioning

confidence: 99%

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

et al. 2021

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“…최근 이 기술을 여러 분야 와 부품에 적용한 연구들이 활발히 수행되고 있으며 피로강도, 표 면거칠기, 경도 등 기계적 물성치 향상을 보여주고 있다 [1][2][3][4][5][6][7][8] . 이러 한 향상들은 정적 힘, 웨이브가이드의 진동 거리 및 주파수 등의 실험 조건들에 따라 달라지므로 체계적인 연구를 위해 UNSM을 위한 장치 개발이 필요하다.…”

Section: 서 론unclassified

Development of 20-kHz Ultrasonic Equipment for UNSM

Shin¹,

Kim²,

Lim³

2015

Journal of the Korean Society of Manufacturing Technology Engin

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ARTICLE INFO ABSTRACTArticle history:Ultrasonic nanocrystal surface modification (UNSM) is an example of a nanoscale-surface modification that has become noticeable because of its effects on the mechanical improvement of metallic materials. UNSM equipment needs to be both utilized and improved. The equipment is based on an ultrasonic waveguide whose role is to strike surfaces of metallic materials to achieve nanoscale deformation. In this paper, we introduce the development of one kind of UNSM equipment. Using piezoelectric elements, we repeatedly design and fabricate a 20-kHz ultrasonic waveguide. With respect to the composition of the equipment, the waveguide is automatically transferred by two axial stages automatically. In addition, a static force is constantly applied by pneumatic devices. We perform an experiment to verify the feasibility of the equipment.

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Failure Analysis of Ductile Iron Crankshaft in Four-Cylinder Diesel Engine

Aliakbari

2021

Inter Metalcast

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A study on the restoration method of friction, wear and fatigue performance of remanufactured crankshaft

Cited by 17 publications

References 6 publications

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

Microanalysis of Worn Surfaces of Selected Rotating Parts of an Internal Combustion Engine

Development of 20-kHz Ultrasonic Equipment for UNSM

Failure Analysis of Ductile Iron Crankshaft in Four-Cylinder Diesel Engine

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