Plasma arc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. The term plasma, as employed in physics, means ionized particles. Optimization of process parameters in plasma arc cutting applying genetic algorithm and fuzzy logic. In this advanced technological process, the cnc plasma arc machining is gaining terrible background in industry. Plasma arc machining pam free download as powerpoint presentation. In this process heat for machining is produced by convection from the high temperature plasma as well as due to direct electron bombardment. 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. One amongst the foremost necessity, the nonconventional machines like cnc plasma flame machins increase its demand in market due to high accuracy, finishing, and ability of machining any arduous materials. Water jet machining water jet cutting can reduce the costs and speed up the processes by eliminating or reducing expensive secondary machining process. Taguchi based parametric analysis and optimization of power. Pdf plasma arc cutting optimization parameters for aluminum. The plasma arc process has always been seen as an alternative to the oxyfuel process. Plasma arc machining pam plasma arc machining is a nontraditional thermal process.
In current scenario, with the increase of demand in market for obtain high surface finish and machining of complex shape geometries, conventional machining process are replaced with nonconventional machining process. Experimental study of the features of the kerf generatedby a 200a high tolerance plasma arc cutting system,r. The cuts are made by a high temperature, high velocity gas jet generated by constricting an arc between a tungsten electrode and the component. Plackettburman plans and the analysis of expert opinions. 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. Optimization of process parameters in plasma arc cutting. Chapter 1 early plasma cutting the plasmaarc cutting process saw its first commercial application in the early 1960s. Cv kurnia abadi cnc plasma cutting, engaged in cnc plasma cutting based metal cutting services the manufacture of ornaments from steel metal to aluminum. Radovanovic and others published modeling the plasma arc cutting process using ann find, read and cite. 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. This channel is formed by faculty from bit to enhance the knowledge of students towards technical and fundamentals this video explains plasma arc machining.
These methods form a group of processes which removes excess material by various. Plasma arc machining process does high temperature and high velocity contracted arc through an amount of gas between the. Plasma arc machining free download as powerpoint presentation. This research work presents the effect of process parameter on to the dimensional accuracy of pac process. 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. Plasma arc cutting is such a simple process you could almost take it out of the box and start using it. Plasma arc machining pam methods machining engineering. Plasma arc voltage, vp, the value of plasma arc voltage, vp, is establish function of the nature of the plasmogen gases, the ionization voltage of the gas and the gas flow, dgp. The plasma starts between the tungsten electrode and the orifice by a low current pilot arc. What makes plasma arc welding different from other processes is that the plasma arc welding is concentrated because it is forced through a relatively small orifice. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. Advanced manufacturing processes amps plasma beam machining.
Plasma arc machining or laser beam machining is that which is the last point. The basic plasma cutting parameters are the intensity of the cutting current, the. However, as with any piece of equipment you need to know how and why. 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. Guide to machining carpenter specialty alloys guide to machining carpenter special ty all o ys carpenter technology corporation wyomissing, pa 19610 u.
Since no heat is applied on the materials, cut edges are clean. The appropriate orthogonal array has been selected regarding. 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. Experimental investigation of the plasma arc cutting process. The plasma is obtained by forcing a gas through an electric arc generated between cathode hot tungsten and. Analysis of process parameters of plasma arc cutting of. The principle of plasma arc machining is shown in the figure. Consequently, common applications for pac consisted of repeating cutting patterns in a massproduction mode. Plasma can also be used for plasma arc welding and other applications 24. The plasma arc cutting process employs a plasma torch with a very narrow bore to produce a transferred arc to the work.
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. Study the effect of process parameters in plasma arc cutting. Optimization of machining process parameters in plasma arc. 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 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. Pac of mild steel thin plates of 10 mm through a kali100 plasma arc cutting. Conventional and non conventional machining processes. Plasma arc machining process, diagram, application, advantages and disadvantages introduction. Plasma arc cutting pac process is a widely used machining process in several fabrication, construction and repair work applications. Investigation analysis of plasma arc cutting parameters on the. Plasma arc cutter machine model ps100 was used to cut the specimens. Monno,journal of materials processing technology 345355 2008. Plasma arc machining process, diagram, advantages and. Aim of present work is to investigate the effects of process parameters of plasma arc cutting of quard 400 material using analysis of variance.
Parametric optimization on ss 304l using plasma arc cutting. Plasma arc cutting process and equipment considerations. May 12, 2017 plasma arc machiningbasic terms and working. Subscribe our website for more interesting articles. Pdf optimization of process parameters in plasma arc. Optimization on operating parameters of cnc plasma machine by. Optimization of dimensional accuracy in plasma arc cutting. Study the effect of process parameters in plasma arc. Plasma can cut in a wide range of cutting parameters currents, metal thicknesses and nozzle orifice diameters for plasma arc cutting of stainless steel materials. The gas flow, q plasma arc current intensity values till 800 a. Pdf the effect of various process parameters like welding current, arc gap and welding speed on tensile strength, impact strength and surface. This process involves high energized plasma arc to cut any conducting material with better dimensional accuracy in lesser time.
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. Metal transfer and arc plasma in gas metal arc welding journal of heat transfer. 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. Explore plasma assisted milling of hrsa with free download of seminar report and ppt in pdf and doc format. Optimization of process parameters in plasma arc cutting of en 31 steel based on mrr and multiple roughness characteristics using grey relational analysis. Plasma arc machining pam electric arc welding scribd. The plasma arc cutting on the plate is connected by computer numerical control cnc system which can reduce cutting time and improve accuracy. The plasma arc cutting pac process was developed for difficulttomachine materials in order to overcome the inefficiency and ineffectiveness of conventional machining methods when it comes to complex shapes and tool wear due to the contact between the tool and the workpiece.
In our work, we are going to optimize the machining process parameters of plasma arc machining. In this paper literature has been studied in the context to parametric optimization of cnc plasma flame machining. This method is straightforward with easy operability, and the results have also been established by running confirmation tests. This paper investigates the effects and parametric optimization of process parameters for plasma arc cutting pac of en31 steel using grey relation analysis. Plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path. Advance future in plasma arc welding plasma arc gouging is effective on most. Schematic diagram of plasma arc cutting 1 first of all, plasma arc torch nozzle is placed on the plate at some standoff distance where the cutting will be carried out as shown in figure 1. In a plasma torch, known as the gun or plasmatron, a volume of gas such as h2, n2, 02, etc. Optimization of process parameters in plasma arc cutting of. Plasma arc cutting pac is a thermal cutting process that makes use of a.
Investigation analysis of plasma arc cutting parameters on. The plasma arc cutting pac process was developed for difficulttomachine materials in order to overcome the inefficiency and ineffectiveness of conventional machining methods when it comes to. Plasma arc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path. A critical parameters voltage, current, electrode gap, gas flow rate. The focus on this project is to obtain an optimum condition setting to obtain maximum mrr and minimum the surface roughness sr. Pdf experimental investigation of the plasma arc cutting. The input process parameters were selected as arc voltage, standoff distance and cutting speed.
Two process parameters, cutting speed and gas pressure are considered and experiments. Taguchi based parametric analysis and optimization of power consumption and kerf in. Pdf modeling the plasma arc cutting process using ann. Apr, 2017 this is all about plasma arc welding, principle, working, equipments, types, application, advantages and disadvantages. The plasma arc torch has a space or area surrounding. Plasma arc machining is one of the most important non conventional machining method used in fabrication industries because of its high accuracy, ability to machine any hard material, ability to produce any intricate shape and better finish. Developments in plasma arc cutting pac of steel alloys. Pdf optimization of welding parameters using plasma arc welding. Called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. Early plasma cutters were large, slow, and expensive. Plasma assisted milling of hrsa seminar report, ppt, pdf. Plasma arc machining pam kcg college of technology. This work aims at evaluating processing parameters, such as the cutting power, scanning. Bini and at all were conducted experiment on 15mm thick mild steel sheets metals using process parameters like arc voltage.
Plasma arc cutting is machining process where material is cut by plasma arc. Pdf developments in plasma arc cutting pac of steel. The statistical tool used for determining the optimum process parameters is taguchi the. The premise attributes beneficial knowledge for managing the machining parameters to enhance the preciseness of machined parts by plasma arc cutting. Optimization of plasma arc cutting by applying taguchi. Plasma arc machining plasma is defined as the gas, which has been heated to a sufficiently high temperature to become ionized. The topic for the thesis writing is the analysis of process parameters of plasma arc cutting using design of experiment techniques. Multi objective optimization of process parameters in plasma. The stream temperature of the plasma is influenced by many factors, including electrical, kinematic and technological factors.