This document is a must for every welding school, fabricator and home hobbyist. A joining process that produces a coalescence of metals or non metals by. More commonly called mig welding this welding type is the most widely used and perhaps the most easily mastered type of welding for industry and home use. Plastic welding seminar report, ppt, pdf for mechanical. The various region of the weld where liquid does not form mechanisms of structure and property changes associated with these regions learning activities 1. Tungsten also called wolfram is a metal with a fusion point of more than 3300oc, which means more than double the fusion point of. Your primary concern as a steelworker will be gas and arc welding, the difference being in. The most common types of welding are resistance welding rw, oxyfuel gas welding ofw, and arc welding aw. 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. There are four major types of gas metal arc welding depending on the shielding gas or type of metal transfer that is used.
Sample welding procedure specifications are available on our website. Types of welding position this chapter presents common types of welding position and various difficulties associated with them. After completing this learning unit you should be able to. Flat welding, horizontal welding, vertical and overhead welding, groove weld, edge. Mig welding is the process of using electricity to melt and join pieces of metal together. Document provided by ihs licenseefluor corp2110503106, user, 0903200321. Lecture notes welding and joining processes materials. Tig welding method and application tig welding definition the designation tig comes from usa and is an abbreviation of tungsten inert gas. Welding is usually performed on parts made of the same metal, but some welding operations can be used to join dissimilar metals. Types of welds groove welds welding technology lee co.
En358 ship structures a brief history of welding late 19th century scientistsengineers apply advances in electricity to heat andor join metals le chatelier, joule, etc. Welding can be done without the use of a filler metal by the use of heat energy alone. Experience gained from user contact and welding training of crewmembers showed that. Shielded metal arc welding, which is also known as stick welding, is the most widely used process. Hoses with fittings, goggles, spark lighter, gas welding and cutting torches with nozzles tips, flashback arrestors, filler rods, burner pliers, their care and safety rules. They use various types or combinations of energy to provide the required power. Welding safety procedures thompson rivers university. Common welding types arc welding aw oxyfuel gas weldingofw resistance welding. Welding is of following types authorstream presentation. Find materials for this course in the pages linked along the left. Welding rod sizes and tip sizes used to weld various thicknesses of metal different types of torches and, in some cases, even withtypes of maintenance duties that you will be required to. Butt joint, corner joint, tee joint, lap joint, edge joint. Identify types of welding wire and various diameters.
Plastic welding 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. There are two types of electricity used in welding dc direct current like your car battery, and ac alternating current like the power in. Lower heat input when compared to other welding processes. Operations such as welding, metal cutting, and working around furnaces can expose your eyes to heat, glare, ultraviolet, and infrared radiation. We recommend that you download this pdf document and assignment. Intro to welding a weld is made when separate pieces of material to be joined combine and form one piece when heated to a temperature high enough to cause softening or melting. If you are not familiar with the safety practices, procedures and techniques of basic welding, you will need to. It is not intended as a comprehensive manual, nor does it contain the scope of information needed for commercial or industrial welding purposes. Welding symbols understanding welding symbols terms and definitions plug or slot weld symbol arrow side singlebevelgroove and double fillet weld symbols chain intermittent fillet weld weld both sides each end and 10 inches center to center in between staggered intermittent fillet weld weld ends than 10 inch centers staggered each side welding symbols understanding welding symbols terms and. 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. Understanding different types of carbon and low alloy steels, stainless steels. Arc welding shielded metal arc welding smaw gas metal arc welding gmaw carbon arc welding flux cored arc welding fcaw submerged arc welding saw electroslag welding electrogas welding plasma welding stud arc welding. Welding is a dependable, efficient and economic method for permanently joining similar metals.
Welding procedure specifications wps presented by john lucas welding engineer uti corporation. Further, need for edge preparation and the rationale for selection of suitable groove design have also been presented. The main types of welding used in industry and by home engineers are commonly referred to as mig welding, arc welding, gas welding, and tig welding. Understand and develop basic techniques used with forehand and backhand welding. Welding is a skill that needs to be developed over time, with a. Carbon dioxide using shielding gas of carbon dioxide and larger electrode wire. Mig welding is generally regarded as one of the easiest type of welding to learn.
An externally supplied gas is used to shield the arc. Welding also uses different types of electricity depending on the welding process itself and what the welding filler material manufacturers recommendations. Identify the different types of joints and welds explain the terms and symbols used for groove and fillet welds describe the different welding positions recognize the factors involved in the selection of joints. Introduction to welding from the industrial revolution to. Each of the above type of welding can be further classified depending on other micro level characteristics. This is the welding industrys comprehensive reference on safety.
There are over 70 different processes, the most common of which are. Welding, soldering, brazing max akhterov zettl group safety talk 110706 welding welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone, and with or without the use of filler material. Microwire using short circuiting transfer and allowing all position welding 2. Free guide how to do mig welding free guide on how to do mig welding using a mig welder metal inert gas. Identify major types of ferrous and nonferrous metals. Welding metallurgy 2 lesson objectives when you finish this lesson you will understand. The welding process welding is a process for joining or fastening two pieces of similar metals workpieces by melting and fusing 1 the base metals being joined and 2 the filler metal applied. Common welding types arc welding aw oxyfuel gas weldingofw resistance welding 5. Arc welding is one method for joining metals, and it is indispensable for the. Connects to 1 phase 230v 5060hz readably available power point. Shield metal arc welding smaw also known as manual metal arc. Explore plastic welding with free download of seminar report and ppt in pdf and doc format. Atc images compliments of the american welding society types of welds numerous welds can be applied to the various types of joints considerations when choosing joint geometry and weld types.
Don howard, a welding specialist at concurrent technologies corp. Filler material is typically added to strengthen the joint. Identify the various types of welding guns used in gas metal arc welding. A lot of very intelligent people are coming into the welding community, says howard. Figure 32, shielded metal arc welding, also called stick welding, is the most common welding process. Fusion welding in fusion welding or non pressure welding, the material at the joint is heated to molten state and allowed to solidify.