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. Other machining operations shaping and planing a singlepoint tool moves linearly relative to the work part shaping a tool moves planing a workpart moves broaching performed by a multipletooth cutting tool by moving linearly relative to the work in the direction of the tool axis. The topic for the thesis writing is the analysis of process parameters of plasma arc cutting using design of experiment techniques. Plasma arc is routinely used as an integral component of some modern punching machines. One of the most important non conventional machining methods is plasma arc machining.
In this process heat for machining is produced by convection from the high temperature plasma as well as due to direct electron bombardment. Analyze and simulate various industrial problems in advanced machining processes using ebm and lbm 16. Advantages and disadvantages of plasma arc welding and arc cutting. Pam is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. Chapter 1 early plasma cutting the plasmaarc cutting process saw its first commercial application in the early 1960s. However, as with any piece of equipment you need to know how and why. Welcome to the course on advanced machining processes. The arc welding is a fusion welding process in which the heat required to fuse the metal is obtained from an electric arc between the base metal and an electrode. Plasma arc welding paw is an arc welding process similar to gas tungsten arc welding gtaw. Explain the process and mechanism in plasma arc machining 18. This article provides a study note on atomic hydrogen arc welding. The torch produces a highvelocity jet of hightemperature ionized gas plasma that cuts by melting and displacing material from the workpiece.
Early plasma cutters were large, slow, and expensive. What links here related changes upload file special pages permanent link page. Xpr300 represents hypertherms most significant advance in mechanized plasma cutting technology ever and its now available in multitorch configurations. Lecture 29 electron beam, plasma beam and ion beam machining nptel video lecture topic list created by linuxpert systems, chennaiget digimat digital media access terminal for highspeed video streaming of nptel and educational video courses in lan. The plasma arc cutting process cuts metal by melting a section of metal with a constricted arc. Plasma arc welding paw is an arc welding process similar to gas tungsten arc welding.
Plasma arc machining pam and plasma arc welding paw. In a plasma torch, known as the gun or plasmatron, a volume of gas such as h2, n2, 02, etc. Lecture notes on modern manufacturing process dr pramod. Plasma is the state of the matter when part of the gas is ionized making it a conductor of electric current. A person doesnt need to be a physicist or chemist to understand the plasma arc. Plasma arc welding and machine seminar report pdf ppt download introduction.
A highvelocity jet flow of hot ionized gas melts the metal and then removes the molten material to form a kerf. These methods form a group of processes which removes excess material by various. Plasmaarc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. Other machining operations shaping and planing a singlepoint tool moves linearly relative to the work part shaping a tool moves planing a workpart moves broaching performed by a multipletooth cutting tool by moving linearly relative to. Welding technology nptel free download as pdf file. Find powerpoint presentations and slides using the power of, find free presentations research about plasma arc machining ppt. Welding technology nptel welding electric arc scribd.
Pdf nontraditional manufacturing processes by gary f. Hydrogen, in its atomic state, is a strong reducing gas which prevents oxidation of weld metal and rapid burning of electrodes. In paw the heat source is an arc maintained between a nonconsumable electrode and the workpiece the arc is constricted by a cooled orifice that surrounds the electrode inert gas is supplied separately to the orifice and to a surrounding lowvelocity shielding flow p2. The term plasma, as employed in physics, means ionized particles. The focus on this project is to obtain an optimum condition. Plasma arc machining working principle best engineer youtube. Today we are going to discuss on plasma arc machining process. Plasma arc cutting is machining process where material is cut by plasma arc. Plasma arc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path.
What greatly enhances the heat of the electric arc. The plasma cutting equipment highz plascut50 is suited for plasma arc torching as well as milling wood, pvc, etc. Plasma arc welding and machine seminar reportpdfppt download introduction. Introduction, equipment, nonthermal generation of plasma, selection of gas. It is important to learn to work with the different file types used in the design to production process. The basic plasma arc cutting system consists of a power supply, an arc starting. View and download powerpoint presentations on plasma arc machining ppt. Operations include hole piercing and cutting along a defined path. However, as with any piece of equipment you need to know how and why it does what it does and the necessary precautions to do the job safely. Edm involves the direction of highfrequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode, to disintegrate electrically conductive materials such as hardened steel or carbide. 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.
Scribd is the worlds largest social reading and publishing site. It includes detailed information to gain insight into the manufacturing processes which are new. Plasma arc machining pam the plasma welding process was introduced to the welding industry in 1964 as a method of bringing better control to the a rc welding process in lower current ranges. Screening and shielding selective screening and shielding of other cables and equipment in the surrounding area may alleviate problems of interference. Mar, 2020 the plasma arc cutting process cuts metal by melting a section of metal with a constricted arc. Plasma arc cutting, also referred to as plasma fusion cutting or plasma cutting, is a fabrication process which employs superheated, ionized gas funneled through a plasma torch to heat, melt and, ultimately, cut electrically conductive material into custom shapes and designs. The objective of this work is to study the effects of plasma arc cutting process parameters on hazheat affected zone and bevel angle for low carbon steel 1010 material with thickness 4 mm, which.
The video tutorials are geared and designed to get you up and cutting on your arclight cnc plasma system the day you get it. Principles equipment types beam control techniques. Any oxygen present in the surrounding combines with hydrogen forming waterwhich is immediately converted into steam. Understand the applications of plasma machining and chemical machining. The arc cut pro series plasma table controller includes two extremely powerful plate nesting and cutting programs to give you all the tools needed to maximize productivity and efficiency. The basic principle is that the arc formed between the electrode and the workpiece. Screening of the entire plasma cutting installation may be considered for special applications. Its high accuracy, finishing, ability of machining any hard materials. An invaluable resource that is continuously being added to and developed. Pac differs from oxyfuel cutting in that the plasma process operates by using the arc to melt the metal whereas in the. Plasma arc machining pam methods machining engineering. Plasma arc machining machine tool technology britannica.
Its high accuracy, finishing, ability of machining any hard materials and. Plasma arc machining free download as powerpoint presentation. Look to the demo and training videos tab at the top right of the page to view content. Explain the working principle of plasma arc welding with neat sketch and illustrate the. Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. Our machines are capable to cut materials of up to 150mm6 inch thickness. Welcome to this session on electron beam welding and plasma arc welding processes, under the course advanced manufacturing processes. The plasma arc cutting process is illustrated in fig. Caw constricted arc welding tig tungsten inertgas arc welding mig metal inertgas arc welding mag metal activegas arc welding pjw plasma jet welding paw plasma arc welding pjpw plasma jet plasma arc welding gmgmma gasmixture shielded metalarc welding magm magc co2shielded metalarc welding ngw narrowgap welding. Plasma arc machining or laser beam machining is that which is the last point. The arc cut pro is designed not only for plate cutting, but also for running structural material such as channel, tubing, angle and beams. The electrode and workpiece are immersed in a dielectric liquid, and a feed mechanism maintains a. Pam is a method of cutting metal with a plasma arc, or tungsten inertgas arc, torch.
Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. As shown in the figure, there are four types of matter solid, liquid, gas and plasma. In this paper presented the work design optimization of plasma arc cutting machine. It mentions advantages of plasma arc weldingcutting and disadvantages of plasma arc weldingcutting. The basic arrangement for a plasma arc cutting torch, similar to the plasma arc welding torch, is shown in figure 1071. In this part of the series the process fundamentals are described with emphasis being placed on the operating features and the advantages of the many process variants. Delivery is complete with above shown base frame including connecting pieces and two pullout drawers for water fillings. Its high accuracy, finishing, ability of machining any hard materials and to produce intricate shape increases its demand in market. Consequently, common applications for pac consisted of repeating cutting patterns in a massproduction mode.
Plasma arc welding and machine seminar reportpdfppt download. The objective of this work is to study the effects of plasma arc cutting process parameters on hazheat affected zone and bevel angle for low carbon steel 1010 material with. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Apr 21, 2015 introduction the plasma arc machining process was introduced to the industries in 1964 as a method of bringing better control to the arc welding process in lower current ranges.
Pac was initially employed to cut metals that are difficult to machine by conventional methods. This channel is formed by faculty from bit to enhance the knowledge of students towards technical and fundamentals this video explains plasma arc machining pam in details with explanation of all. Typical materials cut with a plasma torch include steel, stainless steel, aluminum, brass and copper, although other conductive metals may be cut as well. Since the plasma arc cutting process is capable of handheld or machine torch cutting. The plasma is sufficiently hot to melt the metal being cut and moves sufficiently fast to blow molten metal away from the cut. Advantages and disadvantages of plasma arc welding,cutting. With increase in competition in market and to attain high accuracy now a days the nonconventional machining are become lifeline of any industry. Today, plasma retains the original advantages it brought to industry by providing an advanced level of control and accuracy.
Plasma is the region between electrode and work where mostly flow of. In this paper, a mathematical model for determining the cost of plasma arc cutting machining is presented. The plasma arc, as an industrial tool, is a most heavy employed in sheet and plate cutting operations as an alternative to more conventional oxyfuel torches or other cutting tools. Machine tool electricaldischarge machining edm britannica. Plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. This page covers advantages and disadvantages of plasma arc welding and arc cutting.
Check out our machine software demo video and click the link below to learn more. Todday, plasma retains the original advantages it brought to industry by providing an. The key difference from gtaw is that in paw, by positioning the electrode within the body of the torch, the plasma arc can be separated from the shielding gas. There are numerous documents available to assist with these safety issues. Download nontraditional manufacturing processes by gary f. Nov 05, 2017 this channel is formed by faculty from bit to enhance the knowledge of students towards technical and fundamentals this video explains plasma arc machining pam in details with explanation of all. Introduction the plasma arc machining process was introduced to the industries in 1964 as a method of bringing better control to the arc welding process in lower current ranges. The plasma arc process has always been seen as an alternative to the oxyfuel process. Apply unconventional machining process in various industrial applications.
The focus on this project is to obtain an optimum condition setting to obtain maximum mrr and minimum the surface roughness sr. Plasma cutting is often used in fabrication shops, automotive repair and restoration, industrial. The electric arc is produced when two conductors are touches together and then separated by a small gap of 2 to 4 mm, such that the current continues to flow, through the air. To learn about various unconventional machining processes, the various process parameters and their influence on performance and their applications. Plasma arc machining is a nontraditional thermal process. All of these programs generate and use different types of files that are specific to the program. Today metal thinner than 3812 are typically only cut by plasma or laser, as thin. Effect of parameters on material removal rate, tool wear. Mechanical engineering n p t e l national programme on. Caw constricted arc welding tig tungsten inertgas arc welding mig metal inertgas arc welding mag metal activegas arc welding pjw plasma jet welding paw plasma arc welding pjpw plasma jet plasma arc welding gmgmma gasmixture shielded metal arc welding magm magc co2shielded metal arc welding ngw narrowgap welding. The plasma arc welding paw closely resembles the tungsteninert gas tig or gas tungsten arc gta welding process in that it also uses a nonconsumable tungsten.
Pdf experimental investigation of the plasma arc cutting. Plasma arc machining pam plasma arc machining is a nontraditional thermal process. All aspects of mechanical, electrochemical and thermal processes are. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. The torch produces a high velocity jet of hightemperature ionized g. Plasma arc cutting process is the nonconventional thermal process which is applicable to perform various operations such as cutting, welding, coating etc. What is the key to the concentrated high temperature. Nov 05, 2017 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. When a flowing gas is heated to a sufficiently high temperature of the order of 16,500c to become partially ionised, it is known as plasma. Machine tool machine tool electricaldischarge machining edm. The electrode and workpiece are immersed in a dielectric liquid, and a feed mechanism maintains a spark. The electric arc is formed between an electrode which is usually but not always made of sintered tungsten and the workpiece. The principle of plasma arc machining is shown in the figure. Plasma arc cutting process and equipment considerations.
Introduction the plasma arc machining process was introduced to. Oct 15, 20 a typical value of temperature obtained in a plasma jet torch may be of the order of 50,000f against about 10,000f in ordinary electric welding arc. Plasma arc machining pam kcg college of technology. Plasma arc welding is an arc welding process that melts and joins metals by heating them with a constricted plasma arc established between a tungsten electrode and the metals. The process often called flame cutting is known by many names, such as oxy. It is the state of the matter present in between the electrodes in any arc.