Phase evolution and strengthening mechanism induced by grinding hardening

Hong, Yuan; Sun, Cong; Xiu, Shichao; Deng, Yansheng; Yao, Yunlong; Kong, Xiangna

doi:10.1007/s00170-022-09125-z

Cited by 3 publications

(1 citation statement)

References 48 publications

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“…Although the research object is not gears, there are many excellent studies on grinding microstructure evolution by Xiu and Sun et al For example, the effect of grinding chatter on martensite nucleation and growth and the mechanism of grain refinement in the grinding metamorphic layer were investigated by combining the calculation of the grinding temperature field with a hybrid model of metamorphic automata [ 20 , 21 ]. A digital twin model was proposed to study the evolution of grinding temperature and microstructure along the surface depth direction from a microscopic perspective [ 22 ]. The effect of pre-stress and grinding parameters on the dynamic recrystallization behavior of grinding in AISI 1045 steel was investigated [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Towards Understanding Subsurface Characteristics in Burn Process of Gear Profile Grinding

et al. 2023

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In gear profile grinding, the grinding burn will greatly influence the anti-fatigue performance of gears. However, the influence of microstructure change caused by grinding burn on gear surface integrity is still unclear. In this paper, full-factor experiments of gear profile grinding are conducted and the grinding temperature is measured during the experiments. Furthermore, the tooth surface integrity including microstructure, residual stress, microhardness, and surface morphology is characterized. The relationship between grinding parameters, grinding burns and subsurface layer properties is analyzed by systematical test results. Radial grinding depths of more than 20 μm matched with wheel speeds below 30 m/s will result in severe grinding burns. The effect of grinding burns on the grain state mainly results in the breakdown of high strength martensite and the formation of inhomogeneous secondary tempered sorbite. The recovery and recrystallization of the microstructure of the tooth subsurface layer after grinding burns is the root cause of the substantial reduction in compressive residual stress and nano-hardness. The occurrence of grinding burns is mainly due to the unreasonable matching of process parameters rather than being influenced by a single grinding parameter alone. The risk of burn can be significantly reduced at greater wheel speeds and lower radial grinding depth. This study presents an insight into the mechanism of the effect of gear profile grinding burns on the surface integrity of the tooth flank.

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Section: Introductionmentioning

confidence: 99%

Towards Understanding Subsurface Characteristics in Burn Process of Gear Profile Grinding

et al. 2023

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Influence of the abrasive shape-position characteristic on the grinding thermo-mechanical coupling

Sun,

Zhang,

et al. 2023

Surf. Sci. Tech.

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Grinding is a generally utilized method, removing excess materials through effective abrasives. The grinding abrasives with multiple shape-position characteristics play a dominant role in determining the thermo-mechanical coupling, which may influence the surface quality directly. To investigate this correlated influence mechanism, this paper focuses on the abrasive shape and position characteristic on the grinding thermo-mechanical process with the analytic single abrasive interaction force model by considering the abrasive shape and its distribution information. It can be found that the mapped dynamic grinding temperature is actually discretized on the workpiece surface, which is on account of the diversity of the abrasive shape and its distribution. Moreover, higher spherical and conical abrasive particles, as well as lower pyramid shaped abrasive particle ratios, can generate greater specific grinding energy with a discretized temperature distribution, when compared with a higher proportion of pyramid shaped abrasive. The study can be utilized to provide valuable theoretical foundation for engineering practice by preparing structural wheel and its grinding property.

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Multi-Objective Optimization of Surface Integrity in the Grind-Hardening Process

Wang,

Shen

et al. 2024

Coatings

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Grind-hardening machining is a new integrated manufacturing technology that integrates the theory of material surface quenching and grinding machining. The surface integrity of grind-hardening directly affects the performance and reliability of the parts. Improving the grind-hardening quality has always been the focus and difficulty in this field. Based on the surface integrity theory and the characteristics of the grind-hardening process, this paper proposed four optimization criteria for grinding parameters according to the engineering application requirements of materials. Using the expectation function, the burr cross-sectional area, depth of the effective hardened layer, and surface roughness were comprehensively analyzed under each optimization criterion to obtain an optimal combination of grinding parameters. The results revealed a significant inconsistency in the optimized grinding parameters under each optimization criterion. When considering the depth of the effective hardened layer as the primary optimization parameter and ignoring the surface roughness and burr cross-sectional area, the highest overall desirability was 0.926395. In practical application, the optimization criteria should be reasonably selected according to the actual engineering requirements.

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Phase evolution and strengthening mechanism induced by grinding hardening

Cited by 3 publications

References 48 publications

Towards Understanding Subsurface Characteristics in Burn Process of Gear Profile Grinding

Towards Understanding Subsurface Characteristics in Burn Process of Gear Profile Grinding

Influence of the abrasive shape-position characteristic on the grinding thermo-mechanical coupling

Multi-Objective Optimization of Surface Integrity in the Grind-Hardening Process

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