Effect of Surface Rolling on Load Bearing Capacity of Pre-alloyed Sintered Steel Gears with Different Densities

Takemasu, Teruie; Koide, Takao; Shinbutsu, Toshinaka; Sekiya, Hiroshi; Takeda, Yoichi; Nishida, Satoshi

doi:10.1016/j.proeng.2014.10.002

Cited by 16 publications

(13 citation statements)

References 5 publications

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“…During the process, the rolling speed was 30 r/min and the feeding speed of the roller dies was 0.6 mm/s. After reaching the preset distance, the roller dies stopped the feed at 0.8 mm and kept the distance for 1 s. These parameters of the rolling process have been studied in our previous research [16], and it was found that with these parameters we can produce PM parts with a surface dense-layer deeper than 0.3 mm and a density higher than 7.5 g/cm 3 . This meets the performance use requirements.…”

Section: Surface Rolling Apparatus and Methodsmentioning

confidence: 99%

“…All of the part densities were well controlled by compacting. After sintering, the densities of green parts with each of the different carbon contents were measured based on the Archimedes drainage method, with the values fluctuating between 7.08 and 7.12 g/cm 3 . The average density of the sintered samples was then calculated at about 7.10 g/cm 3 .…”

Section: Preparation Of Pm Componentsmentioning

confidence: 99%

“…After sintering, the densities of green parts with each of the different carbon contents were measured based on the Archimedes drainage method, with the values fluctuating between 7.08 and 7.12 g/cm 3 . The average density of the sintered samples was then calculated at about 7.10 g/cm 3 . Sample photographs are shown in Figure 1, and the dimensions are outer diameter (OD) = 25 mm, inner diameter (ID) = 15 mm, thickness = 8 mm.…”

Section: Preparation Of Pm Componentsmentioning

confidence: 99%

“…Compared with forging, the advantages of the PM process are that it is suitable for complexly shaped parts, the raw material utilization rate is high, and the production cost is reduced [3,4]. However, the inherent porosity in traditional single pressed and sintered products is one of the major factors causing reduction in the mechanical properties of PM parts [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbon Content on the Properties of Iron-Based Powder Metallurgical Parts Produced by the Surface Rolling Process

Yan

Chen

et al. 2018

Metals

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Abstract:In recent years, the rolling densification process has become increasingly widely used to strengthen powder metallurgy parts. The original composition of the rolled powder metallurgy blank has a significant effect on the rolling densification technology. The present work investigated the effects of different carbon contents (0 wt. %, 0.2 wt. %, 0.45 wt. %, and 0.8 wt. %) on the rolling densification. The selection of the raw materials in the surface rolling densification process was analyzed based on the pore condition, structure, hardness, and friction performance of the materials. The results show that the 0.8 wt. % carbon content of the surface rolling material can effectively improve the properties of iron-based powder metallurgy parts. The samples with 0.8 wt. % carbon have the highest surface hardness (340 HV 0.1 ) and the lowest surface friction coefficient (0.35). Even if the dense layer depth is 1.13 mm, which is thinner than other samples with low carbon content, it also meets the requirements for powder metallurgy parts such as gears used in the auto industry.

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Section: Surface Rolling Apparatus and Methodsmentioning

confidence: 99%

Section: Preparation Of Pm Componentsmentioning

confidence: 99%

Section: Preparation Of Pm Componentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Carbon Content on the Properties of Iron-Based Powder Metallurgical Parts Produced by the Surface Rolling Process

Yan

Chen

et al. 2018

Metals

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“…Gunter et al [10,11] proposed a densification strategy to achieve PM gears with high load-carrying capacity; Takemasu et al [12,13] studied high-performance PM gears. Jones et al [14] and Koide et al [15] studied high-performance, surface-densified PM gears.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Rolling Temperature on the Microstructure and Mechanical Properties of Surface-Densified Powder Metallurgy Fe-Based Gears Prepared by the Surface Rolling Process

Chen

Peng

et al. 2017

Metals

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Abstract:In this investigation, the surface-rolling process was performed to improve the performance of PM (powder metallurgy) parts. Different rolling temperatures were applied and the effect of rolling temperature on the microstructure and mechanical properties of the surface dense layers in the samples were investigated. In the study, room temperature and temperatures of 100 • C, 200 • C, 300 • C were studied during the rolling process. The results confirmed that the sample prepared with a pre-heated temperature of 200 • C had the lowest porosity at the surface area. It also exhibited the highest surface hardness and wear resistance. The optimum rolling temperature was determined to be 200 • C and the related mechanism was discussed.

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Methods and Technologies for Mastering Uncertainty

Groche

Abele

Groche

et al. 2021

Springer Tracts in Mechanical Engineering

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Uncertainty affects all phases of the product life cycle of technical systems, from design and production to their usage, even beyond the phase boundaries. Its identification, analysis and representation are discussed in the previous chapter. Based on the gained knowledge, our specific approach on mastering uncertainty can be applied. These approaches follow common strategies that are described in the subsequent chapter, but require individual methods and technologies. In this chapter, first legal and technical aspects for mastering uncertainty are discussed. Then, techniques for product design of technical systems under uncertainty are presented. The propagation of uncertainty is analysed for particular examples of process chains. Finally, semi-active and active technical systems and their relation to uncertainty are discussed.

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Effect of Surface Rolling on Load Bearing Capacity of Pre-alloyed Sintered Steel Gears with Different Densities

Cited by 16 publications

References 5 publications

Effect of Carbon Content on the Properties of Iron-Based Powder Metallurgical Parts Produced by the Surface Rolling Process

Effect of Carbon Content on the Properties of Iron-Based Powder Metallurgical Parts Produced by the Surface Rolling Process

The Effect of Rolling Temperature on the Microstructure and Mechanical Properties of Surface-Densified Powder Metallurgy Fe-Based Gears Prepared by the Surface Rolling Process

Methods and Technologies for Mastering Uncertainty

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