Introduction to machine design darshan institute of. These methods form a group of processes which removes excess material by various. Arc flash is concentrated enough to cause headaches, dizziness, and blindness for an 85 amp torch, shade 8 eye protection or better is required electricity plasma cutter cuts with 85 amps at volts dc, or 11,000 watts. Today, plasma retains the original advantages it brought to industry by providing an advanced level of control and accuracy to produce high quality welds in miniature or precision applications and to provide long. The term plasma, as employed in physics, means ionized particles.
Janiyani department of mechanical engineering page 1. Plasmaarc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. In this process heat for machining is produced by convection from the high temperature plasma as well as due to. Welcome to this session on electron beam welding and plasma arc welding processes, under the course advanced manufacturing processes. It is a programmable function for all machining centers.
Capacity speed our capacity allows us to create cnc machined parts with unrivaled speed. Mechanical machining ultrasonic machining usm and waterjet machining wjm are typical examples of single action, mechanical non traditional machining processes. This channel is formed by faculty from bit to enhance the knowledge of students towards technical and fundamentals plasma arc machining is used for variety of industrial application. Welcome to the course on advanced machining processes. Early plasma cutters were large, slow, and expensive. This course also deals with the sample preparation. The machining medium is solid grains suspended in an abrasive slurry in the former,while a fluid is employed in the wjm process. Manufacturing processes i nptel online videos, courses. Plasma arc welding and machine seminar reportpdfppt download.
Feedrate is the rate at which the cutting tool will move during a machining operation. Non traditional machining process plasma arc machining pam part a. This paper investigates the effects and parametric optimization of process parameters for plasma arc cutting pac of en31 steel using grey relation analysis. This channel is formed by faculty from bit to enhance the knowledge of students towards technical and fundamentals this video explains plasma arc. Materials science and technology teachers handbook pacific northwest national laboratory richland, washington published in 1994, cleared for release in 2008. On this channel you can get education and knowledge for general issues and topics.
The plasma welding process was introduced to the welding industry in 1964 as a method of bringing better control to the arc welding process in lower current ranges. Machining operations and part geometry each machining operation produces a characteristic part geometry due to two factors. Plasma arc welding is a liquid state welding process in which, the metal to metal joint forms in molten state. Machining guides composite machining guide composite machining for decades, the aircraft industry has utilized composite materials in multiple applications, including flight surfaces and some internal cabin parts. Plasma arc machining pam plasma arc machining is a nontraditional thermal process. This course will cover the basic principles and techniques of xray diffraction, optical, scanning electron and transmission electron microscopy along with demonstrations of the instrument details and imaging experiments through videos. It deals with the latest machining processes named as advanced machining processes. Non traditional machining process plasma arc machining. Optimization of process parameters in plasma arc cutting. Nptel provides elearning through online web and video courses various. You must be able to control how quickly these axes move, especially during machining.
From the uniaxial tensile test, one can understand material behavior considerably. Featured audio all audio latest this just in grateful dead netlabels old time radio 78 rpms and cylinder recordings. Cnc as it is now known, allows part machining programs to be edited and stored in the computer memory as well as permitting diagnostics and quality control functions during the actual machining. Unfortunately, these materials are unique to each design in their fiber. Relative motions between the tool and the workpart generating part geometry is determined by the feed trajectory of the cutting tool 2. Cnc machining is a subtractive manufacturing method that uses cutting tools to remove material from a block of raw material or a preexisting part.
For this experiment we have chosen stainless steel 316l ss316 l. Nptel syllabus advanced machining processes video course course outline this course on advanced machining processes is also known as. Advanced machining processes and nanofabrication ppt. Fundamental of welding science and technology video. The topic for the thesis writing is the analysis of process parameters of plasma arc cutting using design of experiment techniques. Groover, fundamentals of modern manufacturing 2e figure 26. The term for advisable state of plasma arc is called stability of arc too. Nptel provides elearning through online web and video courses various streams. Plasma arc machining pam methods machining engineering.
Today we are going to discuss on plasma arc machining process. All cnc machining begins with a part program, which is a sequential instructions or coded commands that direct the specific machine functions. The inside of atomic hydrogen arc welding, part 2 1943 duration. In order to meet these challenges, a number of newer material. In our work, we are going to optimize the machining process parameters of plasma arc machining. Consequently, common applications for pac consisted of repeating cutting patterns in a massproduction mode. Advanced machining processes and nanofabrication design is prepared at a magnification of 100x photographic negative is reduced to the. Nptel syllabus advanced machining processes video course course outline this course on advanced machining processes is also known as unconventional machining processes, modern machining processes, and new technology. The guide will continuously be updated from engineering feedback, so if you are looking for a specific feature to be highlighted let us know. As you know, a machining center has three linear axes, x, y, and z. The principle of the plasma cutting shape of plasma torch, streaming jet, water. Chapter 1 early plasma cutting the plasmaarc cutting process saw its first commercial application in the early 1960s.
Today we will learn about plasma arc welding principle, types, working, equipments, application, advantages and disadvantages with its diagram. So this is selfshielded carbon dioxide electrode and you can see the video the. The most important consideration in machining is to limit the amount of heat buildup, as the very act of machining generates friction, and thus, heat. The focus on this project is to obtain an optimum condition setting to. Typical applications for machining plastics include semiconductor processing components, heavy equipment wear parts, and food processing components. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of. Classification of welding processes and definition of welding arc. Sharma, department of mechanical engineering, iit roorkee. Introduction to machine design design of machine elements 2151907 prepared by. Parts, working principle, advantages, application and more. While making a part from raw material, one may require bulk removal of material, forming cavitiesholes and finally finishing as per the parts requirements. Jain department of mechanical engineering, indian institute of technology kanpur, kanpur208016, india.
C o n t e n t s page introduction 1 applications 2 lubrication 35 grade selection 67 bearing configuration 810 standard available forms shaft material choice 1112 surface finish and tolerances dimensioning 21. It is the first course at the under graduate level on microstructural characterization of materials. Non traditional unconventional machining process advance machining processes 27 lessons 4 h 34 m. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Patni input parameters cutting speed, cutting current, standoff distance, cutting voltage, plasma gas pressure and gas flow rate output parameters surface roughness, material removal rate and kerf width material ss 310.