Nptel provides elearning through online web and video courses various streams. Plasma arc machining pam kcg college of technology. Plasma arc machining working principle best engineer youtube. In particular, the spark gaps of arc striking and stabilizing devices should be adjusted and maintained according to the manufacturers recommendations. Modern machining methods are also named as nonconventional machining methods. Called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. The basic arrangement for a plasma arc cutting torch, similar to the plasma arc welding torch, is shown in figure 1071. Module 2 thermal processes unit 1 introduction to thermal processes and safety unit 2 introduction to oxyacetylene welding unit 3 manual metal arc welding unit 5 tungsten active gas shielded welding unit 4 metal active gas welding unit 6 oxyfuel cutting unit 7 plasma arc cutting. The regression analysis was used in 9 for the development of empirical models able to describe the effect of the process parameters on the cut quality in plasma arc cutting of a 15 mm thick mild steel sheets. There is no cutting of metal with the help of metallic tool having sharp cutting edge. Mar, 2020 the plasma arc cutting process cuts metal by melting a section of metal with a constricted arc. 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. Basic tips to improve plasma cutting performance millerwelds. These greater temperatures were possible because the high gas flow in the plasma torch nozzle formed a relatively cool boundary layer of unionised gas along the nozzle wall, allowing a higher degree of arc constriction.
Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. A look at plasma arc cutting, including the basics of the plasma arc cutting process. In this process, gas such as compressed air is blown at high speed out of a nozzle. Plasma arc cutting is the process in which the metal is cut by melting a localized area with a constricted arc and removing the molten material with a high velocity jet of hot, ionized gas. The lotos ltpdc2000d is a first to market multipurpose welder that allows the user to dc tigstick weld and plasma cut all from one portable machine. Pam is a method of cutting metal with a plasma arc, or tungsten inertgas arc, torch. Plasma arc machining process, diagram, advantages and. Plasma arc cutting process and equipment considerations. Electron beam, plasma beam and ion beam machining youtube. Plasma arc cutting equipment machine cuts through metal workpiece, creating. Chapter 1 early plasma cutting the plasmaarc cutting process saw its first commercial application in the early 1960s. Nptel provides courseware in the form of video lectures and web courses. This course on advanced machining processes is also known as.
High precision of cut parts in small and medium thicknesses of materials. Victor cutmaster 120 operating manual pdf download. Feb 12, 2014 the inside of atomic hydrogen arc welding, part 2 1943 duration. Click here to visit our frequently asked questions about html5. Lecture video 18 of advanced machining processes course by prof vijay k.
Compared to mechanical cutting, our versa cut 60 plasma cutter works significantly faster, and makes curved and intricate cuts more easily and precisely. The shielding should be connected to the cutting mains supply so that good electrical contact is maintained between the conduit and the cutting power source enclosure. How does a pac plasma arc cutting torch convert the cutting gas into plasma. This post covers a number of popular art projects you can do at home with a portable plasma cutter. Instead of simply burning the waste at a few hundred degrees, the waste is heated to much higher temperatures thousands of degrees so it melts and then vaporizes. Plasma arc cutting process and equipment considerations twi. Cutting aluminum has some unique challenges compared to cutting steel or other common metals, particularly regarding the crack sensitivity and chemistry. Plasma arc cutting system service manual 804470 revision 2.
Smart material, adaptive structures and intelligent mechanical systems iitk. Plasma arc gouging is a variation of pac in which material from the surface of a plate, casting, welded assembly, or other metal workpiece is melted and removed to form a gouge or groove. Advanced machining processes online course video lectures by. And, compared to mechanical mean of cutting, plasma cutting is typically much faster, and can easily make nonlinear cuts. As shown in the figure, there are four types of matter solid, liquid, gas and plasma. Disadvantages of plasma arc machining the cutters electrode and nozzle sometimes require frequent replacement which adds to the cost of operation.
Pdf the plasma cutting process is investigated experimentally in the present paper for assessing the quality of the cut. Most simadre brand cutters have many of the same features as more expensive plasma cutting machines, and come with a one year warranty from their prospective sellers. The torch produces a highvelocity jet of hightemperature ionized gas plasma that cuts by melting and displacing material from the workpiece. Careful preparation, setup, and maintenance can alleviate many costly problems which operators encounter. Oxyacetylene cuts by burning through the metal and is therefore limited to steel and other ferrous metals. Pac, plasma arc cutting is a thermal material riddance process that is chiefly used for cutting bulky sections of. The cutting equipment should not be modified in any way except for those changes and adjustments covered in the manufacturers instructions. Because of this, plasma cutting can cut nonferrous materials, requires a lower skill level, and offers faster travel speeds. Numerical control wikipedia, the free encyclopedia. Citocut plasma cutting range cutting all materials from 0.
Free video reveals how to remove tattoo naturaly from home. Plasma arc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path. The figure depicts how one matter is obtained from the other and vice. A plasma arc cutting machine cutting the internal sections of a metal part. Cutting cables the cutting cables should be kept as. Plasma arc cutting system plasma, waterjet and laser. Audio and video clips are included in the text, with an italicized instruction. These methods form a group of processes which removes excess material by various techniques involving mechanical, thermal, electrical chemical energy or combination of these energies. Plasma cutting guide plasma cutter tips plasma cutting.
Called pam, this is a method of cutting metal with a plasma arc, or tungsten inertgas arc, torch. Awesome plasma cutter art projects you can do at home. The second portion of the article and part 2 of the video provides guidelines for plasma cutting safety, proper equipment set up and shows you some cool accessories that make cutting easier. Plasma arc machining pam plasma arc machining is a nontraditional thermal process. Pdf experimental investigation of the plasma arc cutting. Pac was initially employed to cut metals that are difficult to machine by conventional methods. Plasma cutting produces enough energy to melt the metal and then creates the momentum to blow it away. Plasma cutting is easy and extremely efficient, but is not without its hazards. The eastwood versa cut 40 and versa cut 60 plasma cutters make striking an arc easy and feature an internal moisture separator. When it comes to plasma arc welding people get confused, there are quite a few things that differentiate the plasma arc cutting and welding now let us see the differences between plasma arc welding and plasma arc cutting. Plasma cutting under water for very small heat affecting of the material to be cut and low noise level around the workplace. This easy to use plasma cutter has the power to cut up to 38 in. Delivery is complete with above shown base frame including connecting pieces and two pullout drawers for water fillings.
Check out our machine software demo video and click the link below to learn more. There is no cutting of metal with the help of metallic tool having sharp cutting. If youre in the market for a dependable plasma cutter that wont break the bank or out you in the doghouse, be sure to give a simadre plasma. This is done by an electrical device known as a plasma arc. Lotos ltpdc2000d nontouch pilot arc plasma cutter tig. Nonconductive materials such as wood or plastic cannot be cut with plasma cutters with transferred arc. The cuts are made by a high temperature, high velocity gas jet generated by constricting an arc between a tungsten electrode and the component. The old adage measure twice, cut once is as important for plasma arc cutting operators as it is for carpenters. It mentions advantages of plasma arc welding cutting and disadvantages of plasma arc welding cutting. Mophorn 50 amp plasma cutter nontouch pilot arc dual voltage 110 220v plasma cutting machine 14mm 0. It is commonly used to cut steel and other metals, but can be used on a variety of materials. Plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path.
Early plasma cutters were large, slow, and expensive. Shielding should be electrically continuous throughout its length. Plasma cutting really shines in some niche applications, such as cutting expanded metal, something that is nearly impossible with oxyfuel. Restriction of the use of up to 160 mm 180 mm for dry cutting and 120 mm for cutting under water. 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 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. Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. Before we begin, here are 2 very helpful instructional videos that will help you with the basics of metal art cutting shapes and designs, and cutting. Air plasma arc cutting various type of plasmaarc cutting air plasma arc cutting was introduced in early 1960s for cutting mild steel. Welding revo technologies and enterprisesan iso 9001. Nptel, online courses and certification, learn for free. Plasma arc cutting article about plasma arc cutting by the.
Power source control unit, plasma arc cutting torch with torch cable, work piece lead and lead assembly, plasma. Although favorable economically, mild steel was seldom cut with this process because of three fundamental limitations. A highvelocity jet flow of hot ionized gas melts the metal and then removes the molten material to form a kerf. The plasma arc process has always been seen as an alternative to the oxyfuel process. The term plasma, as employed in physics, means ionized particles. This article details a few key safety factors to consider before striking an arc.
Start studying plasma arc cutting pac module 2920503. The plasma arc cutting process cuts metal by melting a section of metal with a constricted arc. Cut charts the following cut charts show the consumable parts, cutting speeds and the gas and torch settings required for each process. Called pam, this is a method of cutting metal with a plasma arc, or tungsten inertgas arc. Just as oxyfuel torches can be used for either welding or cutting, so too can plasma torches, which can achieve plasma arc welding or plasma cutting. A person doesnt need to be a physicist or chemist to understand the plasma arc. Introduction the plasma arc machining process was introduced to the industries in 1964 as a. 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. Actually all welding arcs are partially ionized plasmas, but the one in plasma arc welding is a constricted arc plasma. Sharma, department of mechanical engineering, iit roorkee. Welcome to the course on advanced machining processes.
How to avoid the top 10 problems in plasma cutting. 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. Your browser does not currently recognize any of the video formats available. Whether you are cutting thin sheet metal on your project vehicle or heavier metal up to 78, eastwood s versa cut plasma. Display advertising newsletter sponsorship video advertising services. The plasma cutting equipment highz plascut50 is suited for plasma arc torching as well as milling wood, pvc, etc. Once you have the basics down, though, your imagination is the limit. Consequently, common applications for pac consisted of repeating cutting. Watch videos on youtube to learn more about plasma cutting processes and equipment. The topic for the thesis writing is the analysis of process parameters of plasma arc cutting using design of experiment techniques.
The plasma gouging arc is less constricted than the cutting arc. The focus on this project is to obtain an optimum condition setting to obtain maximum mrr and minimum the surface roughness sr. Theory and practice it is designed for welding instructors at both the high school and college level, union and military trainers, inhouse training departments, welding and cutting distributors who want to offer valueadded customer training, and advisors to student organizations such as future farmers of america and. Thiis video is made to provide help to mechanical, mechanical. Includes basic, advanced, and cnc cutting procedures as well as how to draft and design components for racing and customcar building. This page covers advantages and disadvantages of plasma arc welding and arc cutting. A brief overview of plasma cutting plasma arc cutting was developed 20 years ago primarily for cutting stainless steel and aluminum. Oxygen in the air provides additional energy from the exothermic reaction with molten steel, boosting cutting speeds about 25 percent. Plasma arc machining machine tool technology britannica. Difference between plasma arc cutting and plasma arc welding. The cuts are made by a high temperature, high velocity gas jet generated by constricting an arc. Plasma arc cutting pac is a thermal manufacturing process used for metal plates cutting. Experimental investigation of the plasma arc cutting process.
Plasma cutter plasma cutter tips and techniques eastwood. Learn for free, pay a small fee for exam and get a certificate. Eastwood s versa cut plasma cutters are the professionals and diys choice in plasma cutters. Operating instructions and parts manual plasma cutter. Screening of the entire plasma cutting installation may be considered for special applications the size of the surrounding area to be considered will depend. A built in pilot arc system allows for instant arc striking and ease of use when cutting. All access and service doors and covers should be closed and properly fastened when the cutting equipment is in operation. Maintenance of cutting equipment the cutting equipment should be routinely maintained according to the manufacturers recommendations. This plasma equipment is designed for use only in an industrial environment. In this part of the series the process fundamentals are described with emphasis being placed on the operating features. Advanced machining processes video course mechanical.
Nov 01, 2011 the famed moviecar builder explains how to use a plasma cutter for custom metal fabrication. Advantages and disadvantages of plasma arc welding,cutting. Chapter 1 early plasma cutting the plasma arc cutting process saw its first commercial application in the early 1960s. Ltpdc2000d combines 3 functions into one with a 200 a dc tig welder, a 200 a stick welder, and a 50 a pilot arc plasma.
Demonstrate ability to use the plasma arc cutter, following suggested safety. 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. Plasma arc cutting pac module 2920503 flashcards quizlet. Plasma cutting involves cutting a material using a plasma torch. Today we are going to discuss on plasma arc machining process. Plasma arc machining process, diagram, application, advantages and disadvantages introduction. The numbers shown in the cut charts are recommended to provide. Fundamentals of arc welding processes, physics of arc, arc forces, arc blow, selection of power sources for different arc welding processes, principles of weld joint design, welding symbols, metallurgical aspects in welding of steel, heat flow in welding and its effect on the performance of weld. The basic arrangement for a plasma arc cutting torch, similar to the plasma arc. Like a hot knife through butter, a plasma arc cutting machine slices through any electricityconducting metal faster than traditional cutting. 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 egw electro gas welding pmig plasma mig welding p pulsed arc. For example, for 12 mm steel, plasma cutting costs are about half those of oxyfuel. Typical materials cut with a plasma torch include steel, stainless steel, aluminum, brass and copper, although other conductive metals may be cut as well.
Operating instructions and parts manual plasma cutter description the plasma 375 is an igbt inverter plasma cutter with thermal overload protection, a trafimet torch and a builtin gas regulator. Consequently, common applications for pac consisted of repeating cutting patterns in a massproduction mode. Electron beam and plasma welding processes youtube. The plasma arc cutting process is illustrated in fig. Nov 21, 2001 the plasma cutting arc was considerably hotter than the tig arc shown in figure 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Operations include hole piercing and cutting along a defined path. This work experimentally investigates the influence of process parameters onto the dimensional accuracy. The phrase could be reworded to inspect twice, cut once for the plasma industry.
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