Non traditional manufacturing processes or unconventional machining processes conventional machining processes mostly remove material in the form of chips by applying forces on the work material with a wedge shaped cutting tool that is harder than the work material under machining condition. Electric discharge machining edm working principleequipmentsprocess parameters. Difference between conventional machining and nontraditional. Jul 05, 2014 non conventional machining processes 1. The most typical electrolyte is an ionic solution, but molten electrolytes and solid electrolytes are also possible. Several types of nontraditional machining processes have been developed. Mar 30, 2017 today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram.
In the more than 15 years since the second edition of fundamentals of machining and machine tools was published, the industry has seen many changes. Pdf selection of nontraditional machining process researchgate. Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Machining a material removal process in which a sharp cutting tool is used to mechanically cut away material so that the desired part geometry remains most common application. Jain, is a comprehensive book for students pursuing mechanical engineering. Lecture notes on modern manufacturing process dr pramod. Some of the processes employed for hole making are electrodischarge machining, laser beam machining, electron beam machining, shaped tube electrochemical machining and electrochemical spark machining. I the machining medium is solid grains suspended in an abrasive slurry in the former, while a uid is employed in the jet machining process. Function of electrolyte carrying current between tool and work peice remove products of machining and other insoluble products from cutting region dissipate heat produced in the operation. Introduction as a result of the advances in machine tools and cutting tool technology in recent decades, many of the conventional machining processes such as turning, milling and drilling have become costeffective, flexible and highthroughput manufacturing processes for producing high precision and high. Nontraditional machining the definitive guide machinemfg. Jul 21, 2012 the most typical electrolyte is an ionic solution, but molten electrolytes and solid electrolytes are also possible.
To learn about various unconventional machining processes, the various process. In unconventional machining, a form of energy is used to remove unwanted material from a. Principles of nontraditional machining processes machining. It includes detailed information to gain insight into the manufacturing processes. Nontraditional machining employs processes that remove material by various methods involving thermal, electrical, chemical and mechanical energy or even combinations of these. Students must keep up with developments in analytical modeling of machining processes, modern cutting tool materials, and how these changes affect the economics of machining. Principle, equipment, operation, application, advantages and limitations of water. On account of the importance of these production methods in modern manufacturing systems, non traditional machining processes are now included in curriculum of the most graduate and undergraduate engineering courses.
The technology developed in research laboratories cannot be brought to the shop floor unless its applications are realized by. Start studying chapter 25 nontraditional machining and thermal cutting processes. The impact of free abrasive particles on the work surface. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included. Unconventional machining processes introduction and. Electric discharge processes metal removal by a series of discrete electrical discharges sparks causing localized temperatures high enough to melt or vaporize the metal can be used only on electrically conducting work materials two main processes.
In many cases, the engineering materials cannot be machined by traditional machining processes because of their shape and material type and other effective factors 3. Grinding grinding is the most common form of abrasive machining. Nontraditional machining processes semantic scholar. Nontraditional machining utilizes thermal, chemical, electrical, mechanical and optimal sources of energy to bind, form and cut materials. A detail classification f the machining process based on. Introduction to nontraditional machining iit kanpur. It provides information on updated and advanced machine processes that are used today. The nontraditional machining methods include, ultrasonic machining, laser beam machining, water jet machining, abrasive water jet machining, electron beam machining, etc.
For example, abrasive water jet operations use mechanical energy, but material is removed by erosion. Request pdf nontraditional machining processes an overview this chapter provides a survey of the nontraditional machining processes ntmps, which use various energy forms other than a. For each hybrid machining process the method of material removal, machining system, process variables, and applications are discussed. Non conventional machining processes linkedin slideshare. Traditional machining processes consist of turning, boring, drilling. Understand the compare traditional and nontraditional machining process and. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Non traditional unconventional machining process advance. In order to realize the manufacturing machining demands thrived by newer, hard and difficulttomachine materials being utilized in the present day industries, an assortment of non traditional machining ntm processes has been developed over the past few decades. Nontraditional manufacturing processes is defined as a group of processes that remove. What is the unconventional process which is used to remove maximum material.
It combines the physical energy electricity, magnetism, sound, light and heat, chemical energy and even mechanical energy to applied on the machining position. Ebook modern machining processes as pdf download portable. Nontraditional machining method is an advanced method used to overcome the problems of traditional machining methods. Pdf nontraditional machining ntm processes are now being. Many advanced finishing processes have been employed to make circular andor noncircular cavities and holes in difficulttomachine materials. Modern machining processes top results of your surfing modern machining processes start download portable document format pdf and ebooks electronic books free online rating news 20162017 is books that can provide inspiration, insight, knowledge to the reader. Jagadeesha t, assistant professor, national institute of technology, calicut. New and novel materials because of their greatly improved chemical, mechanical and thermal properties are sometimes impossible to machine using traditional machining processes. Situations where traditional machining processes are unsatisfactory or. Pdf fundamentals of machining and machine tools download. The unconventional machining is also called as non traditional machining the unconventional machining use for the machine the hard and brittle materials such as carbides, stainless steel, hastelloy, nitralloy, waspalloy, and any other that cannot be machined by a conventional process using the conventional machines such as lathe, milling, shaper, planer etc. Download pdf nontraditional machining processes free. When do we need nontraditional processes very high hardness and the strength of the material. Objective of presentation at the end of this presentation, audience will be aware of merits of non conventional machining processes over their traditional counterparts.
There are limitations in regard to the delicacy andor complexity of the work that can be done, as a result of these disadvantages, nontraditional machining processes ntm, that do not involve the formation of chips by shear deformation have been developed. Nontraditional machining traditional machining is mostly based on removal of materials using tools that are harder than the materials themselves. In chemical machining process material is removed by chemical dissolution using chemical reagents or etchants acids or alkaline solutions. Difference between conventional machining and nontraditional machining ntm pintu 27042019 ntm by definition, machining is one of the secondary manufacturing processes by which excess material is gradually removed by shearing from a preformed blank in the form of solid chips using a wedge shaped cutting tool in order to get desired shape. A specific machine tool is required for taking care of each machining operation. Today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. These advanced machining processes amp become still more important when one considers precision and ultraprecision machining. If titanium atomic weight 48, valency 3 is machined by the ecm process at the current of 2000 a with 90% current efficiency, the expected material removal rate in gms will be. Nontraditional machining processes covers recent research and development in techniques and processes which focus on achieving high accuracies and good surface finishes, parts machined without burrs or residual stresses especially with materials that cannot be machined by conventional methods. Waterjet machining a schematic illustration of waterjet machining. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. Pdf nontraditional manufacturing processes by gary f. Non traditional machining processes s5me complied by. A decision guidance framework for nontraditional machining.
Advanced analysis of nontraditional machining explains indepth how each of these advanced machining processes work, their machining system components, and process variables and industrial applications, thereby offering advanced knowledge and scientific. Non traditional machining processes, also called advanced manufacturing processes, are employed where traditional machining processes are not feasible, satisfactory or economical due to special reasons as outlined below. Many advanced finishing processes have been employed to make circular andor non circular cavities and holes in difficulttomachine materials. Nontraditional machining processes an overview request pdf. Conventional machining processes and machine tools moduleiv. Non traditional machining processes linkedin slideshare. The ultrasonic machining usm process is normally employed for hard andor. Difference between conventional machining and non traditional machining ntm pintu 27042019 ntm by definition, machining is one of the secondary manufacturing processes by which excess material is gradually removed by shearing from a preformed blank in the form of solid chips using a wedge shaped cutting tool in order to get desired shape. Function of electrolyte carrying current between tool and work peice remove products of machining and other insoluble products from cutting region dissipate heat produced in. Machining with a difference thats what nonconventional machining is all about. The first three sections of this chapter deal with the working principles and pa.
It is a material cutting process that engages an abrasive tool whose cutting elements are grains of abrasive material known as grit. In order to realize the manufacturingmachining demands thrived by newer, hard and difficulttomachine materials being utilized in the present day industries, an assortment of nontraditional machining ntm processes has been developed over the past few decades. However, machining processes inevitably waste material in the form of chips, production rates may be low, and unless carried out properly, the processes can have detrimental effects on the surface properties and performance of parts. An unconventional machining process or nontraditional machining process is a special type of machining process in which there is no direct contact between the tool and the workpiece. It includes detailed information to gain insight into the manufacturing processes which are new, unconventional and list out the the. Nontraditional machining can be thought of as operations that do not use shear as their primary source of energy. Download pdf nontraditional machining processes free online. Cannot be used for machining castings or hot rolled steel, since hard outer scale will damage the cutter. Non traditional manufacturing processes an overview. Electrochemical machining works on the principles of electrolysis.
A comprehensive guide to machines, techniques, and processes used in todays nontraditional machining intended as a guide for working with some of the most difficulttomachine materials such as superalloys, ceramics, and composites, advanced machining is a definitive reference for both nontraditional and hybrid machining processes. Unconventional machining process sasurie college of engineering. Download nontraditional manufacturing processes by gary f. The common nontraditional machining processes are described in this section. Non traditional machining ntm or non conventional machining ncm, is a kind of machining technology which is different from traditional machining process and equipment. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Total 19 questions have been asked from principles of nontraditional machining processes topic of machining and machine tool operations subject in previous gate papers. Nontraditional manufacturing processes or unconventional machining processes conventional machining processes mostly remove material in the form of chips by applying forces on the work material with a wedge shaped cutting tool that is harder than the work material under machining condition. Yet, there are very few really good text books covering fundamentals, mathematical concepts and numerical problems.
The surface which etched away, exposing the lower layers and process is continued till the. Modern manufacturing processes are classified according to the type of fundamental machining energy employed. Pdf nontraditional machining process find, read and cite all. Mechanical machining i jet machining and ultrasonic machining usm are typical examples of single action, mechanical non traditional machining processes. Nontraditional machining processes flashcards quizlet. Chapter 25 nontraditional machining and thermal cutting processes. Jain advanced machining processes, authored by vijay k. Non traditional machining ntm processes are characterised as follows.
The tool electrode and work piece are free from cutting forces. This book provides a convenient, single source of information on advanced machining, material forming, and joining processes. There are other operations too that fall in miscellaneous categories such as boring, sawing, shaping, and broaching. Chemical reaction takes place between work surface and etchants resulting into removal of material from surface. Article pdf available december 2019 with 576 reads. This book provides a comprehensive reference for nontraditional machining processes as well as for the new hybrid machining ones. A new nontraditional machining method using cavitation. Electron beam machining ebm introduction, principle, equipment and. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. During the electrochemical machining ecm of iron atomic weight 56, valency 2 at current of a with 90% current efficiency, the material removal rate was observed to be 0. It is intended to be used for degree and postgraduate courses in production.
May 19, 2014 nontraditional machining can be thought of as operations that do not use shear as their primary source of energy. Laser beam machining is a thermal machining process which uses laser beam to produce heat. Advanced nontraditional machining processes springerlink. Types of unconventional machining process manufacturing. Th is is an optional edm technique where the electrode is a continuous wire, which is used to cut the metal material similar to a band saw. This course deals with non traditional machining processes, we will discuss about advantage and disadvantages, instrument used for machining, applications of various processes and all numericals from gate ies upsc perspective. The introduction of abrasives to the fluid jet enhances the machining efficiency and is known as abrasive water jet machining. Machining operations are classified into 3 principle processes and they are turning, drilling and milling. It describes available technologies that use tools, such as high velocity material jets, pulsed magnetic fields, light beams, electrochemical reactions, and more. Regarding these, nontraditional machining ntm processes have been developed since the world war ii largely in response.