Nontraditional 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. The process is environmentally friendly as it is noiseless without any chemical reactions and heating. It is suitable for both conducting and non-conducting materials. The present trend is the use of clear low viscosity fluids. In this process the voltage between 50V and 980V and currents from 0.1A to 500A. [Short and Complete Guide], Heat Treatment Processes: Types, Methods, Procedure, Applications (PDF), What is Shaper Machine and The 4 Major Types of Shaper Machines, Cams and Followers: How they Work? which is used to perform the work on the workpiece. If you like our article then please share it with your friends. A machining process is called non-traditional if its material removal mechanism is basically different than those in the traditional processes, i.e. This whole setup is fitted inside an enclosure, which carries good quality reflecting surface inside. In this process, the metal removing is the same as that of the EDM process but the method of generation of heat is different. Electrically non-conducting materials cannot be processed by EDM. Due to above reason, EDM replacing conventional machining. Very good accuracy and surface finish can be obtained. The laser being coherent or consistent in nature a specific property to generate high power density. (A) Contact Machining (B) Non-contact machining (C) Partial contact machining (D) Half contact machining Answer B. MCQ No - 4. <> The velocity transformer which holds the tool firmly. If you want, you can join our community, here is the link to our Facebook group. The cathode is made of tungsten or tantalum. The slurry may have to be replaced frequently. When the potential difference between the tool and workpiece is high, spark discharges through the fluid, removing a very small amount of metal from the work surface. Among them conventional machining processes are age old and at the same time reliable; however, various abrasive cutting processes and so-called non-traditional machining (NTM) processes can also provide similar facility. Water Jet Machining (WJM) also called water jet cutting, is a non-traditional machining process in which high-velocity jet of water is used to remove materials from the surface of the workpiece. with [Pictures &... 12 Types of Spanners and Their Uses [with Pictures] PDF. Basic principles: Laser machiningis to use the energy of light to reach high energy density at the focal point after being focused by the lens, to melt or vaporize the material and remove it in a very short time to realize the machining. Metal is removed from the surface of the work piece by electro chemical action and also by abrasive action of a grinding wheel. A high negative bias is applied to this grid so that the electrons generated by this cathode do not diverge and approach the next element. Materials which cannot be machined by conventional methods are machined by LBM. Bhuvenesh Rajamony. Basic principle: Laser machining technology has the advantages of less waste o… 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. óéãíÍçà1œ¥jÃÿ²ùßoo>À©?ÍO‹Sže'‡}f^Òҕû9˜÷a,PÀªëpV  TÓàeðs8“ú«e8K‚MÝe&ÁóDÚ+Ò©Áq,y‘:‚Ù ãWúqY$,â"ø*sփ3D”ñ´`¹,x³D&¼L™d}u{³þÃñqó$±#$µ¿Ð_­[̄àQr1qáÓí—Ó|ì©àybùßWÝșZ³ŸCîØ=8ñÝ_TŠlvO`Ú4*Ïhÿ¹x†V^)yY¸,ÂG›€ãýš¼!NYÂó(ñÆ)“0%ˆ•,Rdžÿñ øÑãXF. endobj A) Automobile B) Aerospace C) Medical D) All of the mentioned Answer: D. 4. Non-Traditional Machining method is an … [1] The mechanical process is based on the machining done using the high velocity of particle to strike the work piece for the machining. The gas supply pressure is of the order of 850kPa and jet velocity can be as high as 300 m/s and is controlled by a valve. It is the reverse of electroplating. Machining of hard and brittle material is possible with good quality of surface finish and accuracy. The tip of the tool vibrates at a frequency of 20kHz and low amplitude (0.0125mm – 0.075mm). An abrasive gun is used to supply an abrasive slurry, which is a mixture of abrasive grains and the water in between tool and workpiece interface under a pressure. There is almost negligible tool wear, so the cost of tool making is an only one-time investment for mass production. The electrolyte is a highly conductive inorganic salt solution, such as sodium chloride mixed with water or sodium nitrate. Also the selection process becomes more important as all the machining processes cannot be done by using a single method we need to choose an efficient method for different machining processes. LBM uses the light energy of a laser beam to remove material by vaporization and ablation. This site uses Akismet to reduce spam. It consists of an electromechanical transducer which is connected to an AC supply. Modification of this process are used for turning, slotting, trepanning, and profiling operation in which the electrode becomes the cutting tool. The accurate feed rate of the tool is required. xœY[sÛº~÷ŒÿɎ…¯Ng|’4u§Çé9Gmrú K”Å E0$%§ÿ¾»@(Ár2IIÜÅÞ¾½A?ÍooþøWÁJ^fl¾¾½,‚?‚‰¨àQÌò$㠛oêão9{no"öLŸ Chemical energy based unconventional machining, The electrochemical-based unconventional machining process, Thermo-electric energy based unconventional machining. The electrical discharge machining is also called as electro-discharge or spark erosion machining based on the erosion of metal by spark discharges. MRR achieved in EDM process is enough lower than the MRR in case of the conventional machining process, so it cannot be taken as an alternative to conventional machining processes at all. The adequate form of the high value of MRR can be achieved as compared to other non-conventional machining processes. It is different from traditional processing methods that use tools, abrasives, etc. A hole shape is affected by the depth of the workpiece. which were presented in this article in a detailed way. Water jet machining is an environment friendly, non-traditional machining process. He completed his engineering studies in 2014 and is currently working in a large firm as Mechanical Engineer. Also, machining can be performed on any existing part, like forging or casting. How it works? Industry professionals and materials engineers will also find Nontraditional Machining Processes to be a source of ideas and processes for development and industrial application. For example, abrasive water jet operations use mechanical energy, but material is removed by erosion. Conventional machining can be defined as a process using mechanical (motion) energy. It consists of a mixing chamber in which abrasive particle such as aluminium oxide, silicon carbide, diamond powder, glass particles are used. Several types of non-traditional machining processes have developed to better machining condition. 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. 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. EDM refers to a non-traditional machining method, which removes a workpiece with the use of thermal energy. Unconventional or nontraditional machining processes are used when one or more of the following occur: ... Electrical-Discharge Machining (EDM) is also called. The dielectric fluid a distance apart in this type of machining article, we will what., si nce they have wide range of applications 2014 and is currently working in a large firm mechanical. 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