Usbcnc plasma control with icnc600 or external device. Early plasma cutters were large, slow, and expensive. Pdf experimental investigation of the plasma arc 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. Plasma arc cutting system plasma, waterjet and laser. Machine tool electricaldischarge machining edm britannica. 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. 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. Cut charts the following cut charts show the consumable parts, cutting speeds and the gas and torch settings required for each process. Machine tool machine tool electricaldischarge machining edm. In this process heat for machining is produced by convection from the high temperature plasma as well as due to direct electron bombardment.
Plasma arc cutting process and equipment considerations. Pressure, 150 a current, 400 mmmin cutting speed and 2 mm arc gap. View surfaceroughnessandmrreffectonmanual plasma arc cutting machining from ie 310 at university of illinois, urbana champaign. Electrical discharge machining edm has long been the answer for high accuracy, demanding machining applications where conventional metal removal is difficult or impossible. Tc26 sec94 and iec tc26108acd arc welding equipment installation and use. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. Pam is a method of cutting metal with a plasma arc, or tungsten inertgas arc, torch. Give brief information about electrochemical machining process show the ecms working principles and tools define the advantages and disadvantages brief informations about application areas, economics, products and developments. Optimization of process parameters in plasma arc cutting of en 31 steel based on mrr and multiple roughness characteristics using grey relational analysis. To properly explain how a plasma cutter works, we must begin by answering the basic question what is plasma.
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. Pam is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. A person doesnt need to be a physicist or chemist to understand the plasma arc. Further, the concept of hot wire tig welding process has also been elaborated. What items are included in plasma arc cutting equipment. Water jet machining water jet cutting can reduce the costs and speed up the processes by eliminating or reducing expensive secondary machining process.
The plasma parameter is a dimensionless number, denoted by capital lambda, the plasma parameter is usually interpreted to be the argument of the coulomb logarithm, which is the ratio of the maximum impact parameter to the classical distance of closest approach in coulomb scattering. It mentions advantages of plasma arc weldingcutting and disadvantages of plasma arc weldingcutting. Consequently, common applications for pac consisted of repeating cutting patterns in a massproduction mode. Surface roughness and mrr effect on manual plasma arc cutting machining by 1 r. Plasma arc machining process does high temperature and high velocity contracted arc through an amount of gas between the. Our machines are capable to cut materials of up to 150mm6 inch thickness. World academy of science, engineering and technology vol. Plasmaarc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. 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 report pdf ppt download introduction. 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. Plasma arc machining plasma is defined as the gas, which has been heated to a sufficiently high temperature to become ionized. 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.
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. 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. Matter changes from one state to the other through the introduction of energy, such as heat. In this process heat for machining is produced by convection from the high temperature plasma as well as due to. Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. A plasma arc cutting machine cutting the internal sections of a metal part. Some experimental results concerning the surface roughness variation at plasma arc. Paw plasma arc welding pjpw plasma jet plasma arc welding gmgmma gasmixture.
Cnc plasma arc machining is capable of producing more accurate and more finished. 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. Cncplasma cutting machines cnc pl asma cut ting ma chines resume feature. Manual plasma arc cutting is widely used in automobile body repair for cutting high. The term plasma, as employed in physics, means ionized particles. Ini file plasma configuration parameters in the i file can be entered if the software is not running.
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. 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. Advantages and disadvantages of plasma arc welding,cutting. The two modes of operation for the plasma welding process are the nontransferred arc and the transferred arc. View surfaceroughnessandmrreffectonmanualplasmaarccuttingmachining from ie 310 at university of illinois, urbana champaign. Plasma is the state of the matter when part of the gas is ionized making it a conductor of electric current. The premise attributes beneficial knowledge for managing the machining parameters to enhance the preciseness of machined parts by plasma arc cutting. At lower speeds, the molten metal from the kerf sticks to the bottom of the plate.
Screening and shielding selective screening and shielding of other cables and equipment in the surrounding area may alleviate problems of interference. Discharge grinding, plasma pdftk create pdf file arc machining, plasma assisted machining. In its simplest terms, plasma is the fourth state of matter. However, as with any piece of equipment you need to know how and why. The possibilty to override all the parameters while the machine is working free ajan drawing software. 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. Surfaceroughnessandmrreffectonmanualplasmaarccutting. 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. Analysis of process parameters of plasma arc cutting of. Plasma arc machining pam kcg college of technology. It is the state of the matter present in between the electrodes in any 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.
The plasma is sufficiently hot to melt the metal being cut and moves sufficiently fast to blow molten metal away from the cut. In the nontransferred mode, the current flow is from the electrode inside the torch to the nozzle containing the orifice and back to the power. The welding process parameters must be carefully balanced to maintain the stability of the keyhole and the weld pool. Guide to machining carpenter specialty alloys guide to machining carpenter special ty all o ys carpenter technology corporation wyomissing, pa 19610 u.
Plasma welding process modes of operation plasma arc welding. The torch produces a highvelocity jet of hightemperature ionized gas plasma that cuts by melting and displacing material from the workpiece. 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. Plasma arc welding paw is an arc welding process similar to gas tungsten arc welding gtaw. Plasma cutting is often used in fabrication shops, automotive repair and restoration, industrial construction, and. Pdf optimization of process parameters in plasma arc.
The focus on this project is to obtain an optimum condition setting to. Plasma arc cutting is machining process where material is cut by plasma arc. Plasma arc welding and machine seminar reportpdfppt download introduction. Various input parameters like the selection of cutting parameters, gas. An ann approach on the optimization of the cutting. Plasma arc machining pam methods machining engineering. Plasma arc machining free download as powerpoint presentation. Plasma arc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. In current scenario, with the increase of demand in market for obtain high surface finish and machining of complex shape geometries, conventional. 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.
Plasma arc machining machine tool technology britannica. Pdf optimization of welding parameters using plasma arc welding. Plasma arc voltage and a software pid control algorithm which moves the z to keep the. Since the plasma arc cutting process is capable of handheld or machine torch cutting. Since no heat is applied on the materials, cut edges are clean.
Pdf manufacturing companies define the qualities of thermal removing process based on the dimension and physical appearance of the. Experience gained from user contact and welding training of crewmembers showed that. Experimental investigation of the plasma arc cutting process. Pdf the effect of various process parameters like welding current, arc gap and welding speed on tensile strength, impact strength and surface. This page covers advantages and disadvantages of plasma arc welding and arc cutting. Tig, plasma arc, mig 36 pages, 47 figures basic level. So it helps in increasing material removal rate in case of oxidisable materials like in steel. Screening of the entire plasma cutting installation may be considered for special applications. Choosing cutting parameterscalculating cutting speed and. The focus on this project is to obtain an optimum condition setting to obtain maximum mrr and minimum the surface roughness sr.
Plasma machining free download as powerpoint presentation. 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. A multiparameter optimization was carried out using the robust design. Known by many other names, including spark machining, arc machining and inaccurately. These methods form a group of processes which removes excess material by various.
So for certain ferrous metal cutting speed is increased by 25%. Plasma arc welding and machine seminar reportpdfppt download. 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 envelope. Possibility of working with dxf,essi and nc toolpath files. Model sh2012ahqg cnc system for cuttingis designed to work with torchplasma, highpressure water jet and laser cutting machines and extensively used in metal working, advertisement fabrication and stone machining businesses. High reliability as well as good resistance to plasma disturbance, lightning and surge. The plasma arc process has always been seen as an alternative to the oxyfuel process. Pdf plasma arc cutting optimization parameters for aluminum. The electrode and workpiece are immersed in a dielectric liquid, and a feed mechanism maintains a spark.
Plasma arc machining pam plasma arc machining is a nontraditional thermal process. The optimum parameter level for surface roughness are 6. Power source control unit, plasma arc cutting torch with torch cable, work piece lead and lead assembly, plasma, shielding and cooling gases and gas control components. 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 working principle best engineer youtube. 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. As shown in the figure, there are four types of matter solid, liquid, gas and plasma. In the present investigation, plasma arc cutting of stainless steel 316l materials has been carried out using plasma arc cutting machine. The geometrical parameters of the plate to be cut b cutting width average, s thickness of the. The purpose of the welding handbook for maritime welders is to provide guidance in modern welding and related processes and to provide the welder with a source of practical information on the right solution to specific onboard welding problems. In plasma arc welding, the quality of the weld depends on a large number of factors, especially the physical characteristics of the material to be welded and the welding parameters to be used. At higher cutting speeds, the plasma jet does not cut through metal plate. Scribd is the worlds largest social reading and publishing site.
Optimization of machining process parameters in plasma arc. 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. Plasmaarc machining pam employs a highvelocity jet of. Advantages and disadvantages of plasma arc welding and arc cutting. 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. 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 plasma arc cutting process is illustrated in fig. This method is straightforward with easy operability, and the results have also been established by running confirmation tests. 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. The topic for the thesis writing is the analysis of process parameters of plasma arc cutting using design of experiment techniques. Usbcnc plasma control with icnc600 or external device proma. Pdf developments in plasma arc cutting pac of steel. Chapter 1 early plasma cutting the plasmaarc cutting process saw its first commercial application in the early 1960s. The numbers shown in the cut charts are recommended to provide highquality cuts with minimal dross.