Nondestructive Surface Threshold Definition for Remanufacturing Disassembly of Interference Fit

Zhou, Dan; Lan, Sen; Gao, Xiaofeng; Huang, Haihong; Liu, Guangfu

doi:10.1007/s12541-018-0201-1

Cited by 7 publications

(5 citation statements)

References 13 publications

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“…For the disassembly damage and bearing capacity of the shaft in an interference fit, contact pressure, surface roughness and material properties are the key factors. In the experiment, the block samples were utilized to simulate the interference fit, as shown in Figure 1 [2]. The simplified samples not only consider the influence of key factors, but also reduce the difficulty of sample preparation and experiment.…”

Section: Methodsmentioning

confidence: 99%

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Disassembly damage and bearing capacity of shaft with surface micro-texture

Yin

Huang

Zhou

et al. 2022

Surface Engineering

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The re-assembly performance of the mating surfaces in interference fit was affected by the disassembly in the previous step due to the serious friction damage. The experimental platform was built to investigate the disassembly damage and bearing capacity of a shaft in an interference fit. The effects of the surface micro-textures with different shapes and densities on disassembly damage and bearing capacity of the shaft in an interference fit were analysed from the micromorphology, microstructure, and material properties. For the micromorphology, the effects were explained based on the bearing area curve. For the microstructure and material properties, the surface strength of micro-textured surface was enhanced due to the fine grain strengthening and dislocation strengthening. The surface hardness was improved due to the generation of martensite. The results showed that the circular micro-textured surface with 20% area density effectively reduced the disassembly damage and increased the bearing capacity of the shaft in an interference fit.

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Section: Methodsmentioning

confidence: 99%

“…Interference fit is a main assembly mode, which is widely applied in the shaft sleeve parts due to good stability and simple structure [1,2]. Considering the safety and costs, some key interference fit parts need regular overhaul and maintenance, such as the rubber joint of the train's bogie.…”

Section: Introductionmentioning

confidence: 99%

Disassembly damage and bearing capacity of shaft with surface micro-texture

Yin

Huang

Zhou

et al. 2022

Surface Engineering

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“…In the disassembly experiment, F 1 is set as 12.5 kN (the nominal contact pressure P between specimens is equal to 125 MPa), and the degree of disassembly damage will be evaluated by the value of damage comprehensively evaluation (Q) through entropy method [20]. The bigger value of Q means the greater damage.…”

Section: Disassembly Experiments Schemementioning

confidence: 99%

“…After remanufacturing disassembly, several kinds of friction damages (e.g., scratching, furrows and material accumulation) often can be found on the mating surface of the parts with interference fit. These damages present a typical evolution process along the direction of disassembly, beginning with scratches, increasing gradually, and finally evolving to furrows and accumulation of materials [20]. Generally, these damages should be repaired and the cost is closely related to the severity of damages.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

Zhou

Gao

et al. 2023

Chin. J. Mech. Eng.

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After remanufacturing disassembly, several kinds of friction damages can be found on the mating surface of interference fit. These damages should be repaired and the cost is closely related to the severity of damages. Inspired by the excellent performance of surface texture in wear reduction, 5 shapes of pit array textures are added to the specimens’ surface to study their reduction effect of disassembly damage for interference fit. The results of disassembly experiments show that the order of influence of texture parameters on disassembly damage is as follows: equivalent circle diameter of single texture, texture shape and texture surface density. The influence of equivalent circle diameter of single texture and texture shape are obviously more significant than that of texture surface density. The circular texture with a surface density of 30% and a diameter of 100 μm shows an excellent disassembly damage reduction effect because of its perfect ability of abrasive particle collection. And the probability of disassembly damage formation and evolution is also relatively small on this kind of textured surface. Besides, the load-carrying capacity of interference fit with the excellent texture is confirmed by load-carrying capacity experiments. The results show that the load-carrying capacity of the excellent texture surface is increased about 40% compared with that of without texture. This research provides a potential approach to reduce disassembly damage for interference fit.

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“…2 Interference fit is widely used in the fixed connection of mechanical parts for its simple structure and high torque (and force) transmitting capabilities. 3 Cylindrical button inserts are pressed into the bit body. This method holds the button in the body without defects such as undesirable residual stresses and other defects resulting from soldering (another method for joining an insert to the bit).…”

Section: Introductionmentioning

confidence: 99%

Investigation of insert-hole interference fit influence on downhole drilling bit failure

Saeedi

Sadeghi

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Down-the-hole drilling is a reliable method for drilling in medium-to-hard geological structures. The insert-hole fitting interference value emerges as one of the most important factors of down-the-hole drilling bit life. In this study, fatigue tests were conducted using a tungsten carbide pin press-fitted into a hole in the specimens of DIN 1.6580 steel (which is used for manufacturing the bit body) to quantify the effect of interference value on the bit body failure. Then, the process of bit-rock collision was simulated using three-dimensional finite element method taking into account the residual stresses in the insert and bit body to determine the optimal interference value. Simulations were performed considering the rotary motion of the bit in addition to impact for a single-insert as well as a commercial 3.5 inch bit. Results showed that the interference value influences fatigue life significantly. Also, the velocity and angle of impact have considerable influence on body stresses. Results of this study can greatly assist the design of insert-hole manufacturing tolerances in down-the-hole bits.

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Nondestructive Surface Threshold Definition for Remanufacturing Disassembly of Interference Fit

Cited by 7 publications

References 13 publications

Disassembly damage and bearing capacity of shaft with surface micro-texture

Disassembly damage and bearing capacity of shaft with surface micro-texture

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

Investigation of insert-hole interference fit influence on downhole drilling bit failure

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