Explosive welding is mainly used for the production of laminated metals in the form of sheets, rods or pipes in order to improve their corrosion or wear resistance, thermal conductivity or even antifriction properties. The welding process is made possible by the application of explosion welded materials. Explosive welding is a specialised process used for lap joints in difficult to weld metals and their combinations. Fire and explosion hazards in welding and safety measures to be taken are discussed slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The base metal is the plate onto which the cladding metal is being bonded. These researchers have tried to capture the weld quality of explosion welding while making those bonds easier, safer, and more costeffective to make. An analysis is made of the main kinematic parameters that determine the beginning of weld formation near the lower boundary of the region of explosion welding. Welding is a potentially hazardous activity and precautions are required to avoid electrocution, fire and explosion, burns, electric shock, vision damage, inhalation of poisonous gases and fumes, hearing loss, and exposure to intense ultraviolet radiation. Pdf study of the explosive welding process and applications. Explosion welding, technical growth and commercial history pdf. Do not weld where flying sparks can strike flammable material. These would enable researchers in the field to have a quick overview of work.
Welding, brazing and soldering handbooks asm international. Safety in welding, cutting, and allied processes, z49. Volume 6 provides information on both the theory and practice of joining engineered materials and parts. This is done without heating either type of metal to its melting point or jeopardizing the original properties of either. A beamfocusing device is included, and the workpiece is usually placed in an evacuated chamber to allow uninterrupted electron travel. The paper reports experimental results for the flow of material in the gap under oblique collision of metal plates. As with other welding processes, the explosion cladding process applies special terminology to many of the process variables. Explosive welding of metals in a vacuum environment smt holland. Considered a solid state process, exw allows two different types of metals to be forced together with a clean vacuumtight weld.
Other articles where explosive welding is discussed. The abcs of arc welding and providesinspection information to assist welding personnel study the arc welding technologies applied in steel fabrication. Safety practices that are, in general, common to all types of arc welding operations. Explosive spot welding may prove indispensable for space applications such as emergency repairs to spacecraft or even for the erection of devices in space.
It is information available at the time of production of this publication. Explosion welding allows dissimilar metals to be joined to one another through the use of chemical explosives. Arc welding includes shielded metalarc, gas shieldedarc, and resistance welding. Explosive welding takes place when two plates are impacted together under an explosive force at high velocity. Once the films have been removed, the underlying metal can be brought together by high pressure to form the metallic weld. Reasonable care is taken in the compilation and publication of this textbook to insure authenticity of the contents. The process uses the forces of controlled detonations to accelerate one metal plate into another creating an atomic bond. This results in the upper plate being pressed down against the bottom of the common contact.
Manz the hobart institute of welding technology presents this information as a guideline for good safety and health practices. Explosion welding is a solid state process it provides metallurgical bond between two bodies, by using controlled explosion to generate high speed impact a short note on explosion welding was published 2 in issue 9 of practical welding letter for may 2004. Understanding how to properly operate welding equipment protects you from harm and your equipment from damage. The upper plate is placed carefully at an angle of approximately. In fact, explosion welding must be conducted in extremely remote locations. Pdf on apr 19, 2014, bir bahadur and others published study of the explosive. Explosion welding is a process where welding is accomplished by accelerating one of the components at extremely high velocity using explosives. Joining process where two metal sheets are welded together by the heat and pressure created by an explosive which is detonated above the upper plate. Explosion welding or bonding is a solid state welding process that is used for the metallurgical joining of dissimilar metals. It explains the underlying science of welding, brazing, and soldering, emphasizing how chemistry, physics, and metallurgy affect weldment properties and performance. Explosion welding definition of explosion welding by the. The show takes welding to the ocean floor, and viewers. Warning these slides have not been extensively proofread, and therefore may contain errors. Page 33 information sources american national standards institute ansi.
In the last few years, many industry innovators have taken note of the drawbacks of explosion welding. Explosion welding exw is a solid state solidphase process where welding is accomplished. We pride ourselves on solving demanding material design and processing challenges by joining dissimilar metals using explosion welding, roll bond and weld overlay for the worlds industrial infrastructure. This is then usually taken to mean the explosive welding and cladding of metals, although. Keith powell michael fernandez staton burrell basics explosion welding is a solidstate process that produces a high velocity interaction of dissimilar metals by a controlled detonation oxides found on material surfaces must be removed by effacement or dispersion surface atoms of two joining metals must come into intimate contact to achieve metallic bond. Taking the explosion out of explosion welding american. Explosion welding exw is a solid state solidphase process where welding is accomplished by accelerating one of the components at extremely high velocity through the use of chemical explosives. The energy of these electrons is converted to heat upon impact. The most powerful welding process is explored in act two.
It is not intended as a comprehensive manual, nor does it contain the scope of information needed for commercial or industrial welding purposes. Further explosion bonded multilaminates are certified for manned space flight and both civilian and military aerospace applications. Guidelines for pipe welding miller welding equipment. Explosion welding of steel with aluminum springerlink. Limited information has been published in the open literature on pro cedures for explosion welding concentric cylinders or cylindrical compo nents along their. What links here related changes upload file special pages permanent link page information wikidata item cite this page. Recent developments in explosive welding request pdf. Characteristics of explosions an explosion is a rapid. This volume is devoted to information on resistance welding, solid state processes, and other joining and cutting methods.
Apr 29, 2015 fire and explosion hazards in welding and safety measures to be taken are discussed slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Explosion welding exw is a metalworking process that is sometimes also called explosive bonding or explosive cladding. Joining process where two metal sheets are welded together by the heat and pressure created by an explosive which is detonated above the upper. If this is not possible, tightly cover them with approved covers. Explosive welding is a proven process that has gained navy approval for joining aluminum to steel milj24445. Explosion welding is a solid state process where welding is accomplished by accelerating one of the components at extremely high velocity through the. The lower plate is laid on a firm surface, such as a heavier steel plate. Sep 15, 2016 explosion cladding is a solid state welding process that uses precision explosions to bond two dissimilar metals while retaining the mechanical, electrical and corrosion properties of both. Sanok, aiaa 20003406, explosive joining for the mars sample return mission, 36 th aiaaasmesaeasee joint propulsion conference and exhibit, july 1719, 2000. The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas argon or helium, and a filler metal is normally used, though some welds, known as autogenous welds, do not require it.
Explosion welding article about explosion welding by the. This guide, and all the information contained within, is intended to provide you with helpful hints for basic welding. This process is most commonly utilized to clad carbon steel plate with a thin layer of corrosion resistant material e. This document is not an application manual and does not contain a complete statement of all factors pertaining to those topics. The results of experimmta carried out to find the mechanical properties of explosively welded joints are discussed and the application of the principle to the. In simple vessel, using only explosion joining, no such strength loss was indicated.
Explosion welding process, uses an explosive detonation as. The show takes a look at how it was discovered, its applications and details of an actual weld. The explosive welding technique has found major use for cladding low cost plate usually carbon steel with more expensive corrosion resistant materials. Acetylene safety data sheet haun welding supply inc. The cladding metal also called the cladder is the plate, which is in contact with the explosive. Blending our technical expertise and welding technologies, we offer the widest collection of clad metal products anywhere in the world. With the detailed information about the mechanical properties of the. In electronbeam welding, the workpiece is bombarded with a dense stream of highvelocity electrons. The explosion bonded joints strength was reduced by the heataffected zone of fusion joint, introducing a failure which propagated down the explosion joint.
Nuhgraha, 23711 roy faizal, 23711007 ethys pranoto, 23111024220120 1 2. Hemi specializes in explosive bonding which uses the forces of controlled detonations to accelerate one metal plate into another creating an atomic bond. Lead arc welding of a forged steel cupandcross tiedown assembly into an aluminum aircraft carrier deck plate. The handbook is a voluntary effort by the members of the welding handbook committee, the welding handbook volume 1 committee, and the chapter committees. This metalworking technique is used to join dissimilar metals into a highquality joint which has high mechanical strength, is ultrahigh vacuum tight, and can withstand drastic thermal excursions. If you are not familiar with the safety practices, procedures and techniques of basic welding.
Safe practices for the preparation for welding and cutting of containers or piping, aws f4. This clad plate is typically used in the chemical and petrochemical industries as tube sheet for heat exchangers. Explosion welding exw is one of the joining methods consisting of a solid state welding process in which controlled explosive detonation on the surface of a metal. Aws also makes no guaranty or warranty as to the accuracy or completeness of any information published herein. Pdf explosive welding or cladding is usually performed on relative thick plates by means of a large scale parallel plate setup. Effect of explosive characteristics on the explosive. Explosionwelding makes economically useful clad materials. A notable characteristic of explosive welding is the formation of waves at the interface between the welded materials. Sep 25, 2016 explosion welding is a solid state process where welding is accomplished by accelerating one of the components at extremely high velocity through the use of chemical explosives. Explosion welding is basically a solidphase welding process, in which explosives. What is explosive welding and in what applications is it used. Jan 22, 20 explosion welding is a solidstate process that produces a high velocity interaction of dissimilar metals by a controlled detonation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Activating the detonator causes an explosion along the length of the workpiece. Welding is a potentially hazardous activity and precautions are required to avoid electrocution, fire and explosion.
Explosion cladding is a solid state welding process that uses precision explosions to bond two dissimilar metals while retaining the mechanical, electrical and corrosion properties of both. Explosion welding is basically a solidphase welding process, in which explosives are used to accelerate the parts to be joined into a high velocity oblique. Interface characteristic of explosivewelded and hotrolled. Explosion welding and hardening are a special metal forming processes which use power of explosives to create or enhance metal structures. Explosionwelding is a solid state process it provides metallurgical bond between two bodies, by using controlled explosion to generate high speed impact a short note on explosion welding was published 2 in issue 9 of practical welding letter for may 2004.
Check and be sure the area is safe before doing any welding. Chapter 3 introduction to welding in the navy as well as private industry, welding is widely used by metalworkers in the fabrication, maintenance, and repair of parts and structures. The surface film may also be dissipated in a melted region so that the weld is formed via a solidified zone. Explosion welding is basically a solidphase welding process, in which explosives are used to accelerate the parts to be joined into a high velocity oblique collisions, is fundamental to the welding process. Effect of explosive characteristics on the explosive welding. A solidstate process wherein bonding is produced by a controlled detonation, resulting in rapid movement together of the members to be joined. This article focuses on the explosion welded titaniumsteel bimetallic. Fire and explosion prevention american welding society. For additional product information contact your local customer service. Tig welding, is an arc welding process that uses a nonconsumable tungsten electrode to produce the weld. This document is not an application manual and does not contain a complete statement of all factors pertaining to. Only general safety measures can be listed for arc welding because equipment varies considerably in size and type. If you continue browsing the site, you agree to the use of cookies on this website. Specific manufacturers recommendations should be followed.
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