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Thermodynamic Mechanism of Nanofluid Minimum Quantity Lubrication Cooling Grinding and Temperature Field Models

2018 Science
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Release : 2018
Genre : Science
Kind : eBook
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Book Synopsis Thermodynamic Mechanism of Nanofluid Minimum Quantity Lubrication Cooling Grinding and Temperature Field Models by : Min Yang

Download or read book Thermodynamic Mechanism of Nanofluid Minimum Quantity Lubrication Cooling Grinding and Temperature Field Models written by Min Yang. This book was released on 2018. Available in PDF, EPUB and Kindle. Book excerpt: Grinding is an indispensable form of machining, in which, a large amount of heat is transferred into workpiece surface, causing surface burn of the workpiece. Flood grinding is easy to cause pollution to the environment while dry grinding and minimum quantity lubrication (MQL) is insufficient of cooling and lubrication effect. The appearance of nanofluid minimum quantity lubrication cooling (NMQLC) technique can effectively solve the problem of heat transfer in grinding zone and also enhance the lubrication characteristics. In this chapter, NMQLC technique, including nanofluid preparation and atomization is summarized first; then a review on the mechanism of grinding thermodynamics under NMQLC condition is presented based on published literatures. Most of the studies, including investigation of grinding forces and temperatures, indicate that NMQLC has realized a lubrication-cooling effect close to that of flood lubrication. According to existing investigations, theoretical models of temperature field are concluded, heat source distribution model, thermal distribution coefficient model, and heat transfer coefficient model under NMQLC condition are developed, and temperature field control equation are determined. This chapter reviews and amasses the current state of the mechanism of grinding thermodynamics and also recommends ways to precision control the grinding temperature field.

Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding

2019-10-25 Technology & Engineering
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Release : 2019-10-25
Genre : Technology & Engineering
Kind : eBook
Book Rating : 48X/5 ( reviews)

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Book Synopsis Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding by : Li, Changhe

Download or read book Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding written by Li, Changhe. This book was released on 2019-10-25. Available in PDF, EPUB and Kindle. Book excerpt: In today’s modern world, the manufacturing industry is embracing an energy-efficient initiative and adopting green techniques. One aspect that has failed to adopt this scheme is flood grinding. Current flood grinding methods increase the treatment cost of grinding fluid and waste large quantities. In order to remain sustainable and efficient, in-depth research is necessary to study green grinding technologies that can ensure machining precision and surface quality of workpiece and reduce grinding fluid-induced environmental pollution. Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding provides emerging research exploring the theoretical and practical aspects of nanofluid lubrication and its application within grinding flow and green manufacturing. Featuring coverage on a broad range of topics such as airflow distribution, morphology analysis, and lubrication performance, this book is ideally designed for mechanical professionals, engineers, manufacturers, researchers, scientists, academicians, and students seeking current research on clean and low-carbon precision machining methods.

Thermodynamic Mechanism of MQL Grinding with Nano Bio-lubricant

2023-12-01 Technology & Engineering
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Release : 2023-12-01
Genre : Technology & Engineering
Kind : eBook
Book Rating : 65X/5 ( reviews)

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Book Synopsis Thermodynamic Mechanism of MQL Grinding with Nano Bio-lubricant by : Changhe Li

Download or read book Thermodynamic Mechanism of MQL Grinding with Nano Bio-lubricant written by Changhe Li. This book was released on 2023-12-01. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the thermodynamic mechanism of MQL grinding with nano-biological lubricant from the force, heat, surface integrity, and micro-morphology. It makes up the fatal defect of the lack of heat transfer capability of traditional MQL grinding. The machining accuracy, surface quality, especially surface integrity of the workpiece, are significantly improved; at the same time, the service life of the grinding wheel is increased and the working environment is improved. The general scope of the book’s content is the effects of MQL grinding with nano-bio-lubricant on grinding force, thermal mechanism, and surface. It provides a new method of sustainable green grinding for environment-friendly, resource-saving, and energy-efficient utilization and solves the technical bottleneck of the insufficient capacity in MQL heat transfer.

Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding

2024-05-02 Science
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Release : 2024-05-02
Genre : Science
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Book Synopsis Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding by : Liu, Mingzheng

Download or read book Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding written by Liu, Mingzheng. This book was released on 2024-05-02. Available in PDF, EPUB and Kindle. Book excerpt: The achievement of high-efficiency and precise grinding of difficult-to-cut metals—like titanium alloys—is essential in the aerospace industry. However, the process often results in thermal damage to the workpiece surface, posing a significant technical challenge. While minimum quantity lubrication (MQL) has been used to aid titanium alloy grinding, its effectiveness is limited by insufficient heat dissipation and lubrication. As an alternative to normal temperature air for carrying micro-lubricants, Cryogenic air has shown promise in improving oil film heat transfer and lubrication performance in the grinding zone, thus reducing workpiece surface thermal damage. The experimental state of the technology demands more comprehensive studies on its effectiveness and on the underlying mechanisms. Thermodynamic Mechanism of Cryogenic Air Minimum Quantity Lubrication Grinding addresses these challenges by providing a theoretical framework for understanding and optimizing cryogenic air minimum quantity lubrication in grinding processes, particularly for titanium alloys. It explores the physical characteristics of lubricants under cryogenic conditions, the influence of low temperatures on atomization effects, droplet formation dynamics, and heat transfer mechanisms within the grinding zone. By establishing quantitative relationships between cryogenic air parameters and lubricant properties, the book lays a foundation for enhancing the cooling lubrication mechanism of cryogenic air MQL in grinding processes. Researchers, scholars, and graduate students in universities and research institutes focusing on machining will find this book invaluable, as it goes beyond the theoretical insights into practical solutions to enhance grinding efficiency and reduce thermal damage.

Microfluidics and Nanofluidics

2018-08-22 Science
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Release : 2018-08-22
Genre : Science
Kind : eBook
Book Rating : 405/5 ( reviews)

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Book Synopsis Microfluidics and Nanofluidics by : Mohsen Sheikholeslami Kandelousi

Download or read book Microfluidics and Nanofluidics written by Mohsen Sheikholeslami Kandelousi. This book was released on 2018-08-22. Available in PDF, EPUB and Kindle. Book excerpt: In the present book, various applications of microfluidics and nanofluidics are introduced. Microfluidics and nanofluidics span a broad array of disciplines including mechanical, materials, and electrical engineering, surface science, chemistry, physics and biology. Also, this book deals with transport and interactions of colloidal particles and biomolecules in microchannels, which have great importance to many microfluidic applications, such as drug delivery in life science, microchannel heat exchangers in electronic cooling, and food processing industry. Furthermore, this book focuses on a detailed description of the thermal transport behavior, challenges and implications that involve the development and use of HTFs under the influence of atomistic-scale structures and industrial applications.

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