Oct 19, 2011 plasma arc welding paw is the process of joining metals that are produced by heating using a constricted arc placed between an electrode and work piece. The plasma arc cutting process cuts metal by melting a section of metal with a constricted arc. The cutting is faster about 5 to 10 times than oxyfuel. Ppt plasma arc cutting powerpoint presentation free to.
A dc power source with a drooping characteristics and open circuits voltage of 70 volts or above is very much suitable for plasma arc welding. The term plasma, as employed in physics, means ionized particles. Pac is a thermal material removal process that is primarily used for cutting thick sections of electrically conductive materials. 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. Plasma assisted milling of hrsa seminar report, ppt, pdf. As with radiation exposure to the eyes, the length and number of times that you are exposed to high levels of noise determine the extent of the damage to your hearing, so be sure to avoid repeated exposure to noise. You need to cut metal, stone, rubber, or other industrial material but arent sure where to start. Plasma arc cutting process and equipment considerations. 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 plasma arc machining is a material removal process. Plasma arc machining free download as powerpoint presentation.
Pdf experimental investigation of the plasma arc cutting. The figure depicts how one matter is obtained from the other and vice versa. Plasma arc welding plasma arc welding is the welding process utilizing heat generated by a constricted arc struck between a tungsten nonconsumable electrode and either the work piece transferred arc process or water cooled constricting nozzle nontransferred arc process. Machine tool machine tool electricaldischarge machining edm. 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. The plasma arc cutting process is illustrated in fig. The plasma screen of altamira all songs by plasma arc machining except the mercy seats by nick cave and the bad seeds produced and mixed by mladen. During this machining process, a small portion of metals is also eroded away, leaving a small cater. Presentations and quizzes explore welding quizzes and presentations from miller, covering topics like mig, tig and stick welding, basic electricity and filler metal selection. Advantages and disadvantages of plasma arc welding,cutting. In this machining process metal is removed by melting and vaporization of metal particle from surface of work piece. View plasma cutting machine ppts online, safely and virusfree.
In ultrasonic machining, a tool of desired shape vibrates at an ultrasonic frequency 19 25 khz with an. Plasma arc machining working principle best engineer youtube. In this type of winding, there are three types of gas. Plasma arc machining process, diagram, advantages and. Identify safety practices related to plasma arc cutting. Learning objective 2 identify and describe plasma arc cutting equipment. A highvelocity jet flow of hot ionized gas melts the metal and then removes the molten material to form a kerf. Plasmaarc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. Gtaw the gtaw process, also known as the tig tungsten inert gas or wig wolfram inert gas process, is illustrated in the above figure.
Plasma arc machining or laser beam machining is that which is the last point. The welding of stainless steels 3 2 stainless steel welding processes 2. It generates a very powerful arc plasma, similar to a laser beam. Plasma arc machining pam electric arc welding scribd. Called pam, this is a method of cutting metal with a plasma arc, or tungsten inertgas arc, torch. Scribd is the worlds largest social reading and publishing site. Plasma arc machining pam plasma arc machining is a nontraditional thermal process. Plasma arc welding paw principle of operation principle of operation principle of operation tig vs. Following are the disadvantages of plasma arc cutting. Plasma arc welding process principle, main parts, working. High frequency generator and current limiting resistors. Medium current plasma 15 to 200a similar to conventional tig, is also used for precision welding operations and when a high level of weld quality is demanded.
Working of ultrasonic machining usm process parameters. Plasma arc machining basic terms and working learn and grow. 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. Principle of operation plasma arc welding is a constricted arc process. Plasma arc machining pam uses a highjet and hightemperature jet of gas to melt substances in its pathway. Pdf experimental investigation of the plasma arc cutting process. The electric arc is formed between an electrode which is usually but not always made of sintered tungsten and the workpiece.
Plasma arc welding and machine seminar reportpdf ppt download introduction. It mentions advantages of plasma arc welding cutting and disadvantages of plasma arc welding cutting. Pac uses a plasma stream operating at temperatures in the range from 10,000 to 14,000. In this study 12 mm plate thickness hardox400 has been cut by high tolerance voltage, cutting speed, and plasma gas flow rate included as main parameters in the analysis and their effect on unevenness of cut surface is evaluated. 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.
The basic arrangement for a plasma arc cutting torch, similar to the plasma arc welding torch, is shown in figure 1071. This post all about plasma arc machining, working principle, advantages, limitations and more. A free powerpoint ppt presentation displayed as a flash slide show on id. Plasma arc machining pam kcg college of technology. 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. 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. Today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Mar 11, 2016 in electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. Working of ultrasonic machining usm process parameters introduction ultrasonic machining is a nontraditional machining process. Explore plasma assisted milling of hrsa with free download of seminar report and ppt in pdf and doc format. Plasma arc welding is an arc welding process wherein coalescence is produced by the heat obtained from a constricted arc setup between a tungstenalloy tungsten electrode and the watercooled constricting nozzle nontransferred arc or between a tungstenalloy tungsten electrode and the job transferred arc.
Plasma arc welding and machine seminar reportpdfppt download introduction. Our machines are capable to cut materials of up to 150mm6 inch thickness. The plasma arc process has always been seen as an alternative to the oxyfuel process. 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. Introduction the plasma arc machining process was introduced to the industries. Explains how to store equipment and clean the work area. Plasma arc machining electric arc plasma physics free. Typical materials cut with a plasma torch include steel, stainless steel, aluminum, brass and copper, although other conductive metals may be cut as well. Plasma arc machining pam free download as powerpoint presentation. The cuts are made by a high temperature, high velocity gas jet generated by constricting an arc between a tungsten electrode and the component. Edm machining process is also known as spark erosion machining. The metal to be welded is melted by the intense heat of the arc and fuses together.
Machine tool electricaldischarge machining edm britannica. Pdf the plasma cutting process is investigated experimentally in the present paper for assessing the quality of the cut. With the unveiling of processes such as plasma arc or electrochemical erosion, the manufacturing industry finds itself with many seeming viable options in which to create a part. Plasma arc cutting 1 plasma arc cutting meng 439 dr. 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. Its high accuracy, finishing, ability of machining any hard materials and to produce intricate shape increases its demand in market.
All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Xpr300 represents hypertherms most significant advance in mechanized plasma cutting technology ever and its now available in multitorch configurations. The plasma is sufficiently hot to melt the metal being cut and moves sufficiently fast to blow molten metal away from the cut. The plasma arc formation begins when a gas such as oxygen, nitrogen, argon, or even shop air is forced through a small nozzle orifice inside the torch. View and download powerpoint presentations on plasma arc machining ppt. 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. An electric arc generated from the external power supply is then introduced to this high pressured gas flow, resulting in what is commonly referred to as a plasma jet. Usm is grouped under the mechanical group ntm processes. Plasma can be defined as a superheated, electrically ionized gas. As shown in the figure, there are four types of matter solid, liquid, gas and plasma. Introduction plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path.
Plasma arc welding paw is an arc welding process similar to gas tungsten arc welding gtaw. Plasma arc welding and machine seminar reportpdfppt download. Lbm abrasive waterjet cutting a stream of fine grain abrasives mixed with air or suitable carrier gas, at high. In electric discharge machining process an arc is produced when two currentcarrying wires are shortcircuited. Explain learning objectives 1, 2, and 3 plasma arc cutting processes and identify related safety precautions. Laser beam machining is a thermal machining process which uses laser beam to produce heat. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Aim of the presentation give brief information about electro chemical machining process show the ecms working principles and tools define the advantages and disadvantages brief informations about application areas, economics, products and developments. Displaying powerpoint presentation on welding plasma arc cutting air carbon and gouging base available to view or download. Medium plasma welding, with welding current from 20a to 100a. Describe the plasma arc cutting process and its applications in the pipefitting trade identify the different components of plasma arc cutting equipment and ppe required for its use.
Plasma arc machining plasma physics electric arc scribd. Introduction plasmaarc machining pam employs a high velocity jet of hightemperature gas to melt and displace material in its path. Similar to gtaw tig, the plasma arc welding process uses this plasma to transfer an electric arc to a work piece. Identifies correct amperage, gas pressures, and flow rates. Find powerpoint presentations and slides using the power of, find free presentations research about plasma arc machining ppt. Covers plasma arc cutting methods for piercing, slotting, squaring, and beveling metals. Plasma arc cutting process pdf this is to certify pdftecnoinox ppf70e7 that the thesis entitled, pdftex def package documentation analysis of process. Electron beam machining is same as laser beam machining process in which except laser, high speed electron beam impinges on work piece. Plasma arc cutting pac is a thermal cutting process that makes use of a constricted jet of hightemperature plasma gas to melt and separate cut metal. Plasma cutting is often used in fabrication shops, automotive repair and restoration, industrial.
Called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. 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. This will generate high heat energy and melts and vaporize metal from work piece. Plasma is a thermally highly heated up, electrically conductive gas, which consists of positive and negative ions, electrons as well as of excited and neutral. 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. The plasma arc cutting process severs metal by using a constricted arc to melt a localized area of a workpiece, removing the molten material with a highvelocity jet of ionized gas issuing from. Download welding plasma arc cutting air carbon and gouging base ppt. Electrical arc machining is the thermal energybased unconventional machining. These parameter values can be ranges like the current is 500a, voltage is 30v to 250v, the speed of cutting is. Keyhole plasma over 100a produced by increasing the current level and the plasma gas flow. The arc is constricted with the help of a watercooled small diameter nozzle which squeezes the arc, increases its pressure, temperature and heat intensely and thus improves arc stability, arc shape and heat transfer characteristics. Following are the advantages of plasma arc cutting. The electrode and workpiece are immersed in a dielectric liquid, and a feed mechanism maintains a spark.
Investigation analysis of plasma arc cutting parameters on. The purpose of the welding handbook for maritime welders is to provide guidance. The arc cut pro is designed not only for plate cutting, but also for running structural material such as channel, tubing, angle and beams. Ppt plasma arc welding powerpoint presentation free to. Nccer, welding level 1 trainee guide, 5th edition pearson. Alternatives to conventional cnc machining are presenting themselves as time marches forth. Plasma arc cutting process pdf plasma arc cutting process pdf plasma arc cutting process pdf download.
Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. These methods form a group of processes which removes excess material by various. Holding torch firmly to workpiece causes nozzle to stick and makes smooth cutting difficult. Start here to learn about the different processes, how each work, and how to choose the process that is right for you. Plasma nitriding process powerpoint ppt presentations. In thesis work literature has been studied in context to parametric optimization of plasma arc cutting machine. Also explore the seminar topics paper on plasma assisted milling of hrsa with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Automation is available with portable trolleys rail. 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.
Plasma arc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. Plasma arc welding and machining project reports projects. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. Plasma arc machining plasma arc machining, released 15 september 2007 1. The torch produces a highvelocity jet of hightemperature ionized gas called plasma that cuts by melting and. Introduction plasma arc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path. Metal cutting metal cutting plasma oxy fuel plasma arc cutting pac is a cutting process that uses an arc and a highvelocity, ionized gas coming. The power supply used in the paw is a dc power source, and the suitable voltage for this type of welding is 70 volts otherwise above the typical welding parameters are voltage, current, and gas flow rate. Plasma arc machining process pdf 10 plasma arc machining. The arc transfers to workpiece once torch is within 18 of workpiece.
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