Called pam, this is a method of cutting metal with a plasmaarc, or tungsten inertgasarc, torch. The wire edm process is most suitable for flat parts, with or without constant thickness. Laser etching machine a laser etching machine used a laser to do etching. The adobe flash plugin is needed to view this content. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered.
Effect of nanofiller on fibre laser drilling quality of. Mar 04, 2020 laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. Ultrafast laser micromachining is dramatically different from conventional laser processing which uses either a continuous wave cw laser or longer microsecond 10 6 pulsed lasers. With our new okuma 5 axis milling machine and our three mori seiki machining. This process uses thermal energy to remove material from metallic or nonmetallic surfaces. At the bottom of the articles you can easily download pdf. In contrast to some other processes, laser operates using high energy photons therefore there is not a typical tool as the laser beam directly targets. But the use of high intensity lasers results in severe lasermatterplume interaction, leading. This beam can be focused by means of a lens on a very small spot in the work piece. A focused electron beam scans across a thin layer of powder causing. Commonly hammers are used to drive nails, fit parts, forge metal and break apart objects. When no filler metal is used, that fusion welding operation is referred to as autogenous weld. Lasing process describes the basic operation of laser, i. As there is an absence of direct contact between the tool and the work piece.
Modern machining unit 5 modern machining method method structure 5. Laser beam machining and drilling lbm, plasma arc machining pam and electron beam. In process picture 2 click on the link below to view more pictures and read more about investigating solidification with. Electron beam welding process, applications and equipment. View electron beam machining process ppts online, safely and virusfree. Types and excitation of co2 lasers basic principles of operation portions from. Plasmaarc machining pam employs a highvelocity jet of high temperature gas to melt and displace material in its path. The innovative wire annealing process is a constant process and consists of heating 9 by laser beams 5, and then wire reeling 7 and cooling. Scribd is the worlds largest social reading and publishing site. The skin and other tissues of all patients and all personnel present in the laser room must be protected from unintended exposure to the laser beam. Ppt laser beam machining lbm powerpoint presentation free. Processes likeabrasive jet machining water jet machininglaser beam machininghot machiningplasma arc machininghave also been included.
Laser beam machining powerpoint presentations mechanical. Mar 22, 2016 a hammer is a mechanical tool that delivers a sudden impact to an object. Machining is the broad term used to describe removal of material from a workpiece includes cutting, abrasive processes grinding, advanced machining processes electrical, chemical, thermal, hydrodynamic, lasers automation began when lathes were introduced in 1700s now have computer numerical control cnc machines. Laser beam machining is a nonconventional machining method. Plasma arc machining process, diagram, advantages and. We publish articles on various engineering and technology topics.
Laser beam welding process in general cases heat is required to fuse the metals for any types of welding, in laser beam welding process the heat is obtained from the application of a concentrated coherent light beam which striking upon the weld metal and melt the metal, such this weld joint is obtained, this welding process is called laser welding. Ppt laser beam machining lbm powerpoint presentation. This is ppt all about laser beam machining which is a unconventional machining process that can be used even on those materials that cant be machined with conventional processes. Silicon micromachining surface micromachining bulk micromachining how to produce devices. This results in extended heataffected zone haz, taper kerf and poor surface finishing. May 04, 2014 this is ppt all about laser beam machining which is a unconventional machining process that can be used even on those materials that cant be machined with conventional processes. There are different jet or beam processes, namely abrasive jet, water jet etc. Welcome to this session on laser beam machining under the course advanced.
Apr 21, 2017 laser material interactions a great advantage of laser machining is capability to machine any kind of material, not necessarily conductive, depending on laser intensity and interaction time. Laser beam machining lbm is a non conventional machining manufacturing process, a form of machining, in which a laser is directed towards the work piece. Electric discharge wire cutting electron beam machining. Lbm is particularly suitable for making accurately placed holes. Laser beam machining powerpoint presentation, ppt docslides by. The high frequency of monochromatic light will fall on the surface then heating, melting and vaporizing of the material take place due. The very large range of available 3d printing technologies and materials often means that several of them may be viable, but each offers variations in dimensional accuracy, surface finish and postprocessing requirements. In the production process, although it has a high strength and a good degree of accuracy, lbm technology is still rarely used. Laser beam machining full seminar report, abstract and. In terms of revenue, the global sachet packaging machines market is estimated to. Laser assisted machining uses a laser beam to heat.
Seminar on non conventional machining report download. Nov 05, 2014 laser beam machining used light energy from a laser to remove material by vaporization and ablation energy is concentrated optically laser emits either continuous or pulsed light beam 5 source. Electric discharge wire cutting electron beam machining laser beam machining plasma arc machining conventional thermal cutting processes 24 electric discharge processes metal removal by a series of discrete electrical discharges sparks causing localized temperatures high enough to melt or vaporize the metal can be used only on electrically. 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. This slide contains the working process of laser, their types and how they are used for machining purposes.
This is accomplished by laser beam machining, electron beam machining, and electrical discharge machining. This paper provides a technical overview of the unique features of the electron beam welding process including several applications. Laser beam machining lbm is one amongst the foremost widely used thermal energy based noncontact kind advance machining method which may be applied for nearly whole vary of materials. Plasma arc machining process, diagram, application, advantages and disadvantages introduction. Demerits of conventional machining process i disposal and recycling of the chips are difficult and tedious process. Laser engineered net shaping companies aerospace and defense industrial biomedical electronics sandia national labs how it works uses a high power laser to melt metal. Build your own complete process plan and generate detailed cost estimates. Modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Electric discharge wire cutting electron beam machining laser. Ppt on machining and thermal cutting process powerpoint.
The underline working principle of laser was first put forward by albert einstein in 1917 though the first industrial laser for experimentation was developed around 1960s. Thermoelectric type micro machining processes 11 electric discharge micromachining edmm 12 wire edm eddg elid laser beam micromachining lbmm 14 electron beam micromachining ebmm 9 subject areas prof. A machining process is called nontraditional if its material removal mechanism is basically different than those in the traditional processes, i. Machining material removal by a sharp cutting tool, e. Laser beam machining process uses highly coherent light source. During 2019 to 2029 sachet packaging machines market to expand at a moderate 6. Ppt laser engineered net shaping powerpoint presentation. This process uses thermal energy to remove material from metallic or nonmetallic sur. Laser beam machining free download as powerpoint presentation.
Nanosecond pulsed lasers have been widely applied to interact with and characterize many different materials. Laser fabrication and machining of materials pp 2952. Microsofts free reader application, or a booksized computer this is. Laser beam machining process laser beam machining process uses highly coherent light source. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Laser material interactions a great advantage of laser machining is capability to machine any kind of material, not necessarily conductive, depending on laser intensity and interaction time. Nowadays, laser is also finding application in regenerative machining or rapid prototyping as in processes like stereolithography, selective laser sintering etc. The process is frequently used in high volume applications using automation, as in the automotive industry. A laser cutter is a prototyping and manufacturing tool used primarily by engineers, designers, and artists to cut and etch into flat material. Laser beam machining used light energy from a laser to remove material by vaporization and ablation energy is concentrated optically laser emits either continuous or pulsed light beam 5 source. These methods form a group of processes which removes excess material by various. Industry analysis and opportunity assessment, 20192029.
The high power radiation of laser gives rise to high temperature on a small area of work piece. A hammer is a mechanical tool that delivers a sudden impact to an object. Non traditional machining ntm processes are characterised as follows. Another method is utilizing the thermal effect to melt or vaporize the material. Flammability is a potential laser hazard associated with most high power systems, but only rarely in the use of low power or diffuse beams. This page contains micromachining seminar and ppt with pdf report. Just measuring your runout in a micromachining setup is hard too. Laser beam welding lbw is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. Laser beam machining lbm is a non conventional machining manufacturing process, a form of machining, in which a laser is directed towards the work piece for machining. Laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. Me mechanical online portal for mechanical engineering. Pdf me6004 unconventional machining processes ump books. Various lbm process commonly used are laser beam drilling lbd, laser beam cutting lbc, laser beam turning lbt and laser beam grooving lbg. Arc welding, resistance welding, oxyfuel gas welding, electron beam welding, laser welding r.
In this operation, electric arc is used to produce heat energy. It is a fusion welding process in which the melting and joining of metals is done by the heat energy generated by the arc between the work and. Apr 29, 2018 there are several processes in this category, e. Plasmaarc machining pam employs a highvelocity jet of hightemperature gas to melt and displace material in its path.
Sinha department of mechanical engineering iit kanpur email. Ppt laser beam machining powerpoint presentation free. Laser beam machining deals with machining and material processing like. Wo2016167674a1 the method of wire annealing process. Ebm uses a high energy beam rather than a laser to induce fusion between the particles of a metal powder. Pdf a laser beam machining lbm database for the cutting of. Me mechanical is an online portal for mechanical engineers and engineering students. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. It is based on keyhole or penetration mode welding. Laser beam machining process uses highly coherent light source this beam can be focused by means of a lens on a. Here 23 different types of hammers pictures are shown below. After steady ablation is realized, the relationship between the intensity. Ppt laser beam machining powerpoint presentation free to download id.
Many different types of lasers have been developed, with highly. Ppt laser beam machining powerpoint presentation, free. Machining material removal by a sharp cutting tool. In contrast to some other processes, laser operates using high energy. Invite colleagues or customers to directly view your estimate. The emission generally covers an extremely limited range of visible, infrared, or ultraviolet wavelengths. Laser beam machining lbm is the property of its rightful owner. A laser etching machines are designed in such a way that it is used to do etching for all types of material made up off glass, textile, cardboard and many more.
The physical arrangement of most co2 lasers is similar to that of any other gas laser. Download link is provided and students can download the anna university me6004 unconventional machining processes ump syllabus question bank lecture notes syllabus part a 2 marks with answers part b 16 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study materials. Casting process at left and casting product at right. Electron beam machining ebm and laser beam machining lbm are.
Ppt laser engineered net shaping powerpoint presentation free to view id. Selecting the most suitable additive manufacturing am process for a particular application can be difficult. A free powerpoint ppt presentation displayed as a flash slide show on id. Nitrogen leaves an oxide free edge that can improve weldability that is another. Me6004 unconventional machining processes lecture notes ppt. Laserbeam machining lbm laserbeam machining is a thermal materialremoval process that utilizes a highenergy, coherent light beam to melt and vaporize particles on the surface of metallic and nonmetallic workpieces. I mentioned it is too much chip load that breaks cutters. Laser beam machining the lasing process lasing process describes the basic operation of laser, i. Laser machining of carbon fibre reinforced polymer composites is a challenging task due to a significant difference between physical and thermal properties of the constituent materials, i. Called pam, this is a method of cutting metal with a. Laser cutters use a thin, focused laser beam to pierce and cut through materials to cut out patterns and. Direct laser metal deposition dlmd is a breaking edge laserbased additive manufacturing lam technique with the possibility of changing the perception of design and manufacturing as a whole. Back to carbon dioxide lasers subtable of contents.
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