Research on Electrical Discharge Grinding Technics and Tool's Life of Polycrystalline Cubic Boron Nitride Cutting Tool

Jia, Yun Hai; Zhu, Linxin

doi:10.1016/j.procir.2017.12.146

Cited by 6 publications

(4 citation statements)

References 4 publications

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“…In this regard, traditional abrasive-grinding and non-traditional electric discharge grinding (EDG) were identified as two effective methods to develop such ultra-hard cutting tools. EDG, being the variant of a conventional electric discharge machining (EDM) technique, erodes the excess material from the facial cutting tool such as PCD [ 111 ] and PCBN [ 112 ], via unceasing and repeated sparks generally with the assistance of a rotary copper-nickel alloy wheel (electrode). The rotary electrode simultaneously channelizes the dielectric into the space between electrode and workpiece and expels the debris from the same [ 109 ].…”

Section: Surface Modification Of Metallic Implant Biomaterialsmentioning

confidence: 99%

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Davis

Singh

Jackson

et al. 2022

Int J Adv Manuf Technol

141

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There is a tremendous increase in the demand for converting biomaterials into high-quality industrially manufactured human body parts, also known as medical implants. Drug delivery systems, bone plates, screws, cranial, and dental devices are the popular examples of these implants - the potential alternatives for human life survival. However, the processing techniques of an engineered implant largely determine its preciseness, surface characteristics, and interactive ability with the adjacent tissue(s) in a particular biological environment. Moreover, the high cost-effective manufacturing of an implant under tight tolerances remains a challenge. In this regard, several subtractive or additive manufacturing techniques are employed to manufacture patient-specific implants, depending primarily on the required biocompatibility, bioactivity, surface integrity, and fatigue strength. The present paper reviews numerous non-degradable and degradable metallic implant biomaterials such as stainless steel (SS), titanium (Ti)-based, cobalt (Co)-based, nickel-titanium (NiTi), and magnesium (Mg)-based alloys, followed by their processing via traditional turning, drilling, and milling including the high-speed multi-axis CNC machining, and non-traditional abrasive water jet machining (AWJM), laser beam machining (LBM), ultrasonic machining (USM), and electric discharge machining (EDM) types of subtractive manufacturing techniques. However, the review further funnels down its primary focus on Mg, NiTi, and Ti-based alloys on the basis of the increasing trend of their implant applications in the last decade due to some of their outstanding properties. In the recent years, the incorporation of cryogenic coolant-assisted traditional subtraction of biomaterials has gained researchers’ attention due to its sustainability, environment-friendly nature, performance, and superior biocompatible and functional outcomes fitting for medical applications. However, some of the latest studies reported that the medical implant manufacturing requirements could be more remarkably met using the non-traditional subtractive manufacturing approaches. Altogether, cryogenic machining among the traditional routes and EDM among the non-traditional means along with their variants, were identified as some of the most effective subtractive manufacturing techniques for achieving the dimensionally accurate and biocompatible metallic medical implants with significantly modified surfaces.

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Section: Surface Modification Of Metallic Implant Biomaterialsmentioning

confidence: 99%

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Davis

Singh

Jackson

et al. 2022

Int J Adv Manuf Technol

141

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show abstract

“…The thermal effects of grinding greatly influence the performance and surface quality of the workpiece, particularly when the grinding temperature surpasses a critical value at the interface, leading to thermal damage on the workpiece surface [14][15][16]. This thermal damage can manifest as burns, surface oxidation, residual stress, and cracks, all of which can reduce wear resistance, increase stress corrosion susceptibility, and decrease fatigue resistance of the components [17][18][19][20][21]. Moreover, the cumulative temperature rise of the workpiece during the grinding cycle can result in size and shape errors [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Temperature field model in surface grinding: a comparative assessment

Yang,

Kong,

et al. 2023

Int. J. Extrem. Manuf.

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Grinding is a crucial process in machining workpieces because it plays a vital role in achieving the desired precision and surface quality. However, a significant technical challenge in grinding is the potential increase in temperature due to high specific energy, which can lead to surface thermal damage. Therefore, ensuring control over the surface integrity of workpieces during grinding becomes a critical concern. This necessitates the development of temperature field models that consider various parameters, such as workpiece materials, grinding wheels, grinding parameters, cooling methods, and media, to guide industrial production. This study thoroughly analyzes and summarizes grinding temperature field models. First, the theory of the grinding temperature field is investigated, classifying it into traditional models based on a continuous belt heat source and those based on a discrete heat source, depending on whether the heat source is uniform and continuous. Through this examination, a more accurate grinding temperature model that closely aligns with practical grinding conditions is derived. Subsequently, various grinding thermal models are summarized, including models for the heat source distribution, energy distribution proportional coefficient, and convective heat transfer coefficient. Through comprehensive research, the most widely recognized, utilized, and accurate model for each category is identified. The application of these grinding thermal models is reviewed, shedding light on the governing laws that dictate the influence of the heat source distribution, heat distribution, and convective heat transfer in the grinding arc zone on the grinding temperature field. Finally, considering the current issues in the field of grinding temperature, potential future research directions are proposed. The aim of this study is to provide theoretical guidance and technical support for predicting workpiece temperature and improving surface integrity.

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“…Electrical discharge grinding is a kind of non-traditional machining method, which uses pulse power supply between the two electrodes (tool electrode and workpiece electrode) to break through the dielectric of the discharge gap, thus generating the electric corrosion phenomenon of pulsed spark discharge to remove the material, so as to meet the requirements of certain shape, size and surface quality [3]. The process of electrical discharge is actually the cumulative process of single pulse discharging, and the erosion characteristic of single pulse discharging is the basic unit of discharge machining.…”

Section: Introductionmentioning

confidence: 99%

Research on Micro-Size Electrical Discharge Grinding Polycrystalline Cubic Boron Nitride Based on Single Pulse

Jia¹,

Hua²,

Zhang

2021

MSF

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Polycrystalline cubic boron nitride (PcBN) was a high temperature and high pressure composite material with high hardness. With its high wear resistance and good chemical stability, it conforms to the basic characteristics of modern advanced cutting technology of "high efficiency, high precision, high efficiency and green". Currently, it was widely used in the field of ferrous metal cutting tools. Electrical discharge grinding was one of the most effective methods for machining polycrystalline cubic boron nitride cutters. It was especially suitable for machining complex shapes and thin edge cutters. Single pulse electrical discharge grinding is the basis of continuous EDG machining and an effective method to study micro-scale electrical discharge grinding. In this study, the morphology of single pulse discharge corrosion pits and the relationship between discharge parameters and material removal rate, such as the deep-diameter ratio of the corrosion pits, the pulse width and the deep-diameter relationship of the corrosion pits, were studied with the polycrystalline cubic boron nitride composite sheet of 2 micron particle size as the test material and the independently developed single pulse discharge power supply as the device. The experimental results show that the radius and heat affected area of the discharge corrosion pit increase rapidly, then slowly, and finally gradually with the extension of pulse duration. The corrosion depth generally varies gently in the range of 0.2 ~ 0.5 micron, and the pulse duration has no obvious effect on the depth of the discharge corrosion pit. With the extension of pulse duration, the ratio of radius to depth of the corrosion pit changed in the range of 13 ~ 20, and the ratio basically declined.

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Research on Electrical Discharge Grinding Technics and Tool's Life of Polycrystalline Cubic Boron Nitride Cutting Tool

Cited by 6 publications

References 4 publications

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Temperature field model in surface grinding: a comparative assessment

Research on Micro-Size Electrical Discharge Grinding Polycrystalline Cubic Boron Nitride Based on Single Pulse

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