Welding process, welding positions welding consumables and auxiliary materials preheating and, where applicable, heat input during welding weld buildup and number of passes welding sequence in special cases grooving of root method postweld heat treatments, if any. World war the ultrasonic method, as described by sokolo vin 1935 and applied by fireston ein 1940, was further developed so that very soon instruments were available for ultrasonic testing of materials. Ultrasonic vibration transmitted by a metal tool horn, sonotrode causes oscillating flexing of the. The two pieces of metal to be joined are squeezed together by the electrodes on the welding machine so they are in good electrical contact. The ultrasonic principle is based on the fact that solid materials are good conductors of sound waves.
Although there are many methods for joining thermoplastics, laser plastic welding has a few clear advantages. For joining complex injection molded thermoplastic parts, ultrasonic welding equipment can be easily customized to fit the exact specifications of the. The processes that are discussed are friction welding section 3, hot plate welding section 4, ultrasonic welding section 5, laserir welding section 6, rf welding section 7 and hot gasextrusion welding section 8. As the industry gained confidence in ultrasonic wire splicing, equipment manufacturers were faced with more challenges,including requirements for welding process control. Chapter 1, section 4 and the applicationspecific section 1 5 of chapter 3, with regard to nondestructive testing, cf. Dec 07, 2011 in ultrasonic welding, frictional heat produced by the ultrasonic waves and force is used for the joining process. Conclusion even though under water welding is more advantageous, there are more risk factor faced by the workers. Ultrasonic cleaning is a highly effective precision cleaning process, which delivers a quick, safe, consistent and exceptional standard of cleaning. All ultrasonic tanks in the range, are manufactured entirely from stainless steel, which makes them robust and also durable. Rev date 09302014 printed copies of this document are uncontrolled. Ppt welding process powerpoint presentation free to. Dec 11, 2015 third in ultrasonic welding, there are no connective bolts, nails, soldering materials, or adhesives necessary to bind the materials together. A solid state welding process in which coalescence is produced at the faying surfaces by the application of high frequency vibratory energy while the work pieces.
Wet welding has been used since long time and nowaday dry welding is also in practice. The motorized feed allows different conductors and compaction lengths to be processed in a sequence without changeover. General purpose sewing lacing and quilting filters. Third in ultrasonic welding, there are no connective bolts, nails, soldering materials, or adhesives necessary to bind the materials together. Also explore the seminar topics paper on plastic welding 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. Resistance welding requires neither additional material or holes in the metal. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Also explore the seminar topics paper on plastic welding 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. Welding parameters will depend on section and metallurgy of rail to be welded. The ultrasonic testing of welds is a much discussed but little used inspection technique, which, in theory, offers significant advantages to both customer and fabri cator. Ppt ultrasonic testing powerpoint presentation free to. The ultrasonic range is then broken down further into 3 sub sections. When two parts to be joined are melted together, heat or pressure or both is applied and with or without added metal for formation of metallic bond.
Ultrasonic welding ryton pps compounds introduction this technical bulletin addresses frequently asked questions about joint design, welding conditions, and weld strength of ryton pps. Experience gained from user contact and welding training of crewmembers showed that. Ultrasonic welding is an industrial technique whereby two pieces of plastic or. In ultrasonic welding, frictional heat produced by the ultrasonic waves and force is used for the joining process. Part design for ultrasonic welding ultrasonic energy has been used to join thermoplastics for over 35 years. A sound level meter, precision class 1 according to iec publication 651,1 equipped with a 14 inch condenser microphone. Ultrasonic plastic welding ultrasonic welding is used in almost all major industries in which thermoplastic parts are assembled in high volumes. Bethlehem steel corporation has been using this inspection technique as a pro duction tool for the last five years. The welding is a process of joining two or more, similar or dissimilar metals by heating them to a suitable temperature, with or without the application of pressure, filler materials and flux. Explore plastic welding with free download of seminar report and ppt in pdf and doc format. Ultrasonic welding technology was invented and patented in the early 1930s and was originally used for the solidstate welding of metals 41. Explore ultrasonic metal welding with free download of seminar report and ppt in pdf and doc format.
Plastic welding seminar report, ppt, pdf for mechanical. Also explore the seminar topics paper on ultrasonic metal welding 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. Ppt ultrasonic welding powerpoint presentation, free. Industrial and agricultural technology program of study committee. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Ultrasonic metal welding seminar report, ppt, pdf for. Ultrasonic metal welding seminar report, ppt, pdf for mechanical. Ultrasonic welding is an industrial technique whereby highfrequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solidstate weld. The welding can proceed with or without the application of external heat.
Pulseecho and through transmission relates to whether reflected or transmitted energy is used. Specified welding defects level as per astm e 390 volii shrinkage crack of any kind are not allowed lack of fusion is not allowed incomplete penetration is allowed up to levelii burn through is not allowed undercut is allowed upto leveliv slag inclusion is allowed up to leveliii porosity. Fusion welding in fusion welding or non pressure welding, the material at the joint is heated to molten state and allowed to solidify. Ultrasonic welding of thermoplastic materials is by far the most common form of ultrasonic assembly, and is used extensively in all major industries including automotive, appliance, electronic, toy, packaging, textile, and medical. Ultrasonic welding, for thermoplastic injection moulded components, is a process that uses mechanical vibrations above the audible range. Ultrasonic sewing machine leanly cut and seal edges of synthetics and nonwovens eliminate fraying, unraveling, and material buildup need no needles, threads, adhesives, or other consumables four times faster than sewing machines ten times faster than adhesive machines minimal operator training required applications. Ultrasonic machining is a mechanical material removal process that uses formed tools, vibration of high frequency and abrasive slurry mix.
This was due to the power limitation of the ultrasonic generator,transducers,and welding modules. Other commonly used processes for shop welding are gas shielded metal arc, flux cored arc, and electroslag welding. Rules for classification and construction ii materials and. The horn, under pressure from the assembly stand, contacts one of the two mated plastic parts. Packaging issues of mems devices ucla henry samueli.
Unloading the welding equipment from the vehicle model k900 made in india thermit corp. Ultrasonic technology may be used not only for welding together ryton pps parts, but also for staking or insertion operations. An introduction to ndt common methods 5 this process is called accommodation and gives us very fast continuous focusing adjustment. Analysis of bonding strength of ultrasonic welding process vijay singh pal, pavan agrawal abstract. Gas tungsten arc welding gtaw or tungsten inert gas tig welding. Before adoption, the welding parameters shall be got approved from rdso.
Ultrasonic metal welding ultrasonic metal welding is a technique suitable for joining both similar and dis similar metal work pieces 1. However, unlike light waves, which can travel in a vacuum empty space, ultrasound requires an elastic medium such as a liquid or a solid. Ultrasonic inspection techniques are commonly divided into three primary classifications. Types of us welding spot welding line welding linear sonotrode continuous seam welding roller sonotrode. It is commonly used for plastics and metals, and especially for joining dissimilar materials. These are, normally, specified by the manufacturer of the plant. Ppt ultrasonic welding powerpoint presentation free to. Pdf design and analysis of ultrasonic welding horn using. In ultrasonic welding, high frequency vibrations are combined with pressure to join two materials together quickly and securely. Specified welding defects level as per astm e 390 volii shrinkage crack of any kind are not allowed lack of fusion is not allowed incomplete penetration is allowed up to levelii burn through is not allowed undercut is allowed upto leveliv. Guidebook for the fabrication of nondestructive testing. 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. This meter was used only as a microphone and a calibrated preamplifier.
This document is a must for every welding school, fabricator and home hobbyist. Ultrasonic waves 15 to 60 khz are transferred to the material under pressure with a sonometer. The lens focuses light onto the retina, which contains very many lightsensitive receptor cells called rods and cones that operate using a photochemical process to convert incident light into. The very nature of ultrasonic cleaning ensures it is a powerful force, which can clean both hard to reach areas such as. Welding methods can roughly be classified into pressure processes, fusion processes, and. Unloading the welding equipment from the vehicle model fbw24 made in india thermit corporation. Welding procedure qualification steps as a summary, welding inspector may be involved with each of the following steps or only a few depend on the structure of the particular organisation select welding variables check equipment and materials for suitability monitor weld joint fit up as well as actual welding. Also explore the seminar topics paper on ultrasonic metal welding 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.
Rdso shall consider parameters suggested by the manufacturer while fixing the parameters. The weld formation is caused by the applica tion of external pressure and ultrasonic vibrations. Mar, 2020 explore plastic welding with free download of seminar report and ppt in pdf and doc format. Analysis of bonding strength of ultrasonic welding process. Noise from ultrasonic welding machines 51 the recording system included. Quality control of welded connections is particularly difficult, because defects below the surface, or even minor flaws at the surface, will escape visual detection. Ultrasonic assembly process home united ultrasonic. This is the welding industrys comprehensive reference on safety. An introduction to ndt common methods 3 section 2 visual and optical testing visual testing is the most widely used method of nondestructive testing ndt. Ultrasonic welding is an industrial technique whereby high frequency ultrasonic. Welding is a method of joining metals in which heat andor pressure are applied to the area of contact between the two components. Flux cored arc welding fcaw gas metal arc welding gmaw, also known as metal inert gas mig welding or hand wire welding. Ultrasonic testing is a very versatile inspection method, and inspections can be accomplished in a number of different ways. Guidebook for the fabrication of nondestructive testing ndt.
Even the more sophisticated methods require a visual test to be performed. The heater elements are manufactured from silicon rubber foil, and heating power ranges from watt to 4000 watt. The ultrasonic transducers, are high effici ency piezoelectric type with special ce ramics. In plastic welding or pressure welding, the pieces of metal to be joined are heated to plastic state and then forced together by external pressure. Ultrasonic assembly process in ultrasonic welding, high frequency sound energy is used to bring the joining surfaces of two thermoplastic parts to a molten state where they can be permanently welded together. Frequency, period and wavelength ultrasonic vibrations travel in the form of a wave, similar to the way light travels. Design and analysis of ultrasonic welding horn using finite element analysis v. Ultrasonic welding can join dissimilar metals in a split second, ultrasonic welding eases problematic.
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