Electroslag welding on the new san franciscooakland bay bridge. A welding procedure specification wps sets broad guidelines for the shop and field welding practice of the fabricator for each anticipated combination of essential variables. This guide sets standard practices for electrogas welding egw of lowcarbon pressure vessel and structural steels. Electroslag welding for stiffeners in ibeam anf box columns. A new option for smelters to weld aluminum bus bars springerlink. A major difference between egw and its cousin electroslag welding is that the arc in egw is not extinguished, instead remains struck throughout the welding. Embedded software, computer software that plays an integral role in the electronics it is supplied with. Weldspec is a welding procedure software for engineers and managers who track and manage welding procedures to asme ix, en 288 en 156141. Licensed to youtube by umg on behalf of island records. Electroslag welding is a process providing one of the highest weld deposition rates and is therefore most costeffective for suitable applications its unique capability permits to weld in one pass groove joint of two plates, thick 1 to 12 inches 25 to 300 mm. Welding procedure specification wps creation and management is simple, fast and accurate with automatic code checking and links to code related software modules. An electric arc is initially struck by wire that is fed into the desired weld location and then flux is. Dmitri kopeliovich electroslag welding is a welding process, in which the heat is generated by an electric current passing between the consumable electrode filler metal and the work piece through a molten slag covering the weld surface.
I am looking for something to organize my wpspqrs and welder quals as well as standards comparison. Flux for electroslag welding sandvik 47s s811 81 sandviken sweden september 2005 general description sandvik 47s is a highly basic, agglomerated flux for electroslag strip surfacing. Welding procedure software supports aws d1 series welding codes, aws b2. Flux is added, which then melts by the heat of the arc. Welding procedure software free downloads shareware central. The temperature profiles in the liquid slag and the liquid metal regions are calculated in three. May 30, 2014 another good example of oscillation is the walking the cup technique during gas tungsten arc welding gtaw. Proud to be the only worldwide online welding software provider advantages of online welding software. Electric arc welding an overview sciencedirect topics.
Cspec weldoffice wps cspec welding procedure software. Abstract the narrow gap improved electroslag welding process was used to make 20 welds in the new san franciscooakland bay bridge tower base. Feb 28, 2015 what are the applications and advantages of electroslag welding esw process. The thickness limit for this welding process reaches up to 30. Electroslag welding, a single pass welding process. For more than 20 years, electroslag welding has been banned from use on primary structural tension members such as heavy flanges and cover plates on bridges built with federalaid highway funds. Esw is a highly productive, single pass welding process for thick materials in a vertical or close to vertical position. Submerged arc welding saw is usually performed by semifull automatic or handheld methods.
Ironworkers from local 377 san francisco and local 378 oakland completed the 20 welds in june and july 2011. The latest software update applies code rules published in the 2019 edition of asme section ix including 2020 errata and in the. It is widely used in the applied at box tube of steel structure vertical welding, pressure vessel, coating inside pipe tube and various application. Nov 26, 2015 electroslag welding esw applications are similar to electrogas welding. Electroslag welding is capable of welding plates with thicknesses ranging from 50 mm to more than 900 mm and welding is done in one pass. Plasma arc welding paw electroslag welding esw electrogas welding egw stud welding sw the letter designation may be used to identify the process. Electroslag welding is a nontraditional welding process in which molten metal pool is created. Will electroslag welding machine operator be automated. Flux 37s is used together with strip electrodes of the cr. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. It must include the process to be used, the specific filler metals, the preheat required, and any other specific information concerning the welding joint technique. Jul 18, 2018 welding procedure specification wps creation and management is simple, fast and accurate with automatic code checking and links to code related software modules. Specialists in welding engineering services, and experts of welding codes, we have developed weldproc welding software for welding engineers, supervisors and welding companies who prepare welding procedures manually to meet requirements of various welding codes and.
Specialists in welding engineering services, and experts of welding codes, we have developed weldproc welding software for welding engineers, supervisors and welding companies who prepare welding procedures manually to meet requirements of various welding. The welding area is filled with the flux and then supplied continuously with a metal wire 2, which also acts as electrode. Electroslag welding employing large square crosssection electrodes was also studied. Wpsamerica online welding software comply with aws d1. Ipts industrial trade books are used extensively throughout canada, north america and overseas. Aspects of the electroslag welding process ubc library open. Use of electroslag welding in highway bridges and structures fhwa. For everyone involved in any phase of welding steel structuresengineers, detailers, fabricators, erectors, inspectors, etc. It is used together with strip electrodes of the cr, crni. Welding parameters were finetuned and a welding procedure for the weld overlay of sa516 gr. The following are free downloadable pdfs available to all users. The welding procedure must be available for the use of the welders.
Process operational guide for narrowgap improved electroslag welding, fhwa. Welding electrodes fluxes for electroslag weld aws. The process uses a flux to generate protective gases and slag, and to add alloying elements to the weld pool. The requirements for electrodes include chemical composition of the electrode for solid electrodes and of weld metal for metal. Full details about the various welding processes can be found in the cwb modules. This method is combination of both arc welding and resistance welding because at starting, heat is generated by establishes an arc between electrode and base metal as in arc welding. Welding procedure specification welding software, welding.
Asme weld number tables are discussed in relation to base metals, filler metals and their positioning in the number tables. Tig welding, melting gas welding, submerged arc welding, plasma arc welding, electroslag welding, stud welding, laser welding, pressure welding and other welding methods. Welding procedure welding procedure qualification record procedure software welding software software welding. Requirements for fluxes include the mechanical properties and soundness of weld metal taken from a groove.
It gives excellent slag removal and bead appearance also for nballoyed strip electrodes. This article discusses the fundamentals of the electroslag process in terms of heat flow conditions and metal transfer and weld pool morphology. They should have a lens that filters out harmful rays from gas welding which is infrared. Image b shows another old school way of protecting the eyes, except these eyecup type goggles are used in gas cutting and welding procedures. Electroslag welding esw is a highly productive, single pass welding process for thick materials in a vertical or close to vertical position. Electroslag welding easily lends itself to mechanization, thus reducing the requirement for skilled manual welders. Electroslag welding is a process providing one of the highest weld deposition rates and is therefore most costeffective for suitable applications its unique capability permits to weld in one pass groove joint of two plates, thick 1 to 12 inches 25 to 300 mm and more. A welder, typically a pipefitter, will do this to minimize body fatigue, increase bead width, and improve tiein at the welds toe. The latest software update applies code rules published in the 2019 edition of.
The aws welding and welder software online demo welding procedure specification wps procedure qualification test records. The study of the process parameters is of importance in understanding the role which they play in determining the grain size attained in the heat affected zone of the resultant weld. Wire electrodes, strip electrodes, wires and rods for arc welding of stainless and heat resisting steels. After the molten slag reaches the tip of the electrode, the arc is extinguished. The main difference is that the arc is started between the electrode tip and the bottom of the part to be welded. The joint details are created from the weld dimensions automatically and are true to scale.
Electroslagwelding is a process providing one of the highest weld deposition rates and is therefore most costeffective for suitable applications. Weldproc welding procedure software weldproc is unique web based welding software for preparing welding procedures easily. The arc welding is a fusion welding process in which. Before discussing its working we should learn about the principle of electroslag welding machine. Prior to welding the gap between the two work pieces is filled with a welding flux. Welderqual welder qualification software to manage welder qualifications and enable managers to quickly identify the most suitable individual for a task. Before machining commences two watercooling shoes 1 are placed on each side of the weld zone to prevent the melt flowing out during the welding process. Never miss another expiration date with our welding software. It shows the welder what joints are covered by the welding procedure, and what welding parameters are to be used when performing the welding. Wps maker is software for the design of welding procedure qualifications wps. Weldproc welding procedure management software for preparing welding production documentation with reporting and control. Click on a document, and you can download the pdf to your pc. Weld procedure software can eliminate p number research time.
Welding procedure and performance qualification aws b2. Weldproc welding software welding procedure software. Its unique capability permits to weld in one pass groove joint of two plates, thick 1 to 12 inches 25 to 300 mm and more. Common uk standards for qualification and approvals twi. The weld buildup may be designed in any possible way and the input of base metals, filler metals, shielding gases and tungsten electrodes is supported by data bases. Electrogas welding egw is a continuous vertical position arc welding process developed in 1961, in which an arc is struck between a consumable electrode and the workpiece. Recent developments in the design and application of magnetic trap devices electroslag and electrogas welding of cmn steel electrospark. Weldoffice software cspec welding procedure software. Gases and gas mixtures for fusion welding and allied processes. All new welding procedure tests are intended to be carried out in accordance with this edition of iso 156147 from the date of its publication. A shielding gas is sometimes used, but pressure is not applied. Specification for welding procedure and performance. Only cspecs weldsoffice offers code compliance and code rules verification supported by active code committee members. Electroslag welding diagram, working, advantages and disadvantages electroslag welding.
Fluxes for submerged arc welding and electroslag welding. This article throws light upon the top four variants of electroslag welding esw. Electroslag welding esw is a highly productive, single pass welding process for thick greater than 25 mm up to about 300 mm materials in a vertical or close to vertical position. Recent developments in the design and application of magnetic trap devices electroslag and electrogas welding of cmn. Electroslag welding diagram, working, advantages and. This takes place along with a continuous addition of flux. Weldnote keeps track of welder performance qualifications wpq expiration dates and notifies you inapp or via email, saving you the time and money required to requalify. Electroslag and electrogas welding of cmn steel twi. Electroslag welding esw and electrogas welding egw are two related procedures that are used to weld thicksection materials in the vertical or nearvertical position between retaining shoes. Top 4 variants of electroslag welding esw metallurgy. Classification requirements are specified for fluxes and solid and composite metal cored electrodes for electroslag welding. Narrowgap improved electroslag welding ngiesw practices and procedures will be allowed on federalaid projects for electroslag welding for joining nonfracture critical tension andor reversal stress loading members in zones 1 and 2 with material up to 3 inches. Here you can purchase all aws publications pdf and hardcopy format.
Electro slag welding is a welding process, in which the heat is generated by an electric current passing between the consumable electrode filler metal and the work piece through a molten slag covering the weld surface. The electroslag welding process is also used for certain special applications. An electric arc is initially struck by wire that is fed. Sample welding procedure specifications are available on our website. When arc welding or cutting a helmet that is fitted with the proper type of lens is needed. The primary role of the welding procedure specification wps is to provide guidance to the welder out in the field. Another good example of oscillation is the walking the cup technique during gas tungsten arc welding gtaw. Welding procedure specification module wps slv halle. Past this, there is not arc involved in the procedure. Extreme heat helps to gain this type of penetration, and multiple electrodes can be used to speed up this process. Electroslagwelding, cost effective vertical one pass process.
In the 1970s, electroslag welding became a popular choice for welding metals that were very thick. One electrode is commonly used to make welds on materials with a thickness of 25 to 75 mm 1 to 3 in, and thicker pieces generally require more electrodes. The current required is about 600 a at 40 to 50 volts although higher currents are used for thick plates. Uphill welding process is a process in which weld joints are made in vertical direction and the plates to be weld held vertically. Esw is similar to electrogas welding, but the main difference is the arc starts in a different location. Electroslagwelding, cost effective vertical one pass. This welding is done both in single pass and multipass. Esw cladding of an inconel 625 protective layer onto a sa 516 gr. Weldspec welding procedure software for engineers and managers who track and manage welding procedures.
The requirements for electrodes include chemical composition of the electrode for solid electrodes and of weld metal for metal cored electrodes. The electroslag welding esw process has been investigated utilizing consumable guide welding procedures. Lec 14 electroslag and electrogas welding duration. Wpsmaker 2 create welding procedure specifications. This paper describes a calculation procedure for the detailed predic tion of temperature profiles and weld dilution in the electroslag welding of mild steel plates. Electroslag welding was derived from a metal manufacturing process called electroslag remelting or. Test record for electroslag and electrogas welding form.
In recent years, a new process to weld aluminum bus bars has been developed, tested and used industrially, permitting significant productivity gains both in terms of time and manpower savings. For the submerged arc welding saw process the flux classification or flux trade. Flux for electroslag welding total welding solution. The consumable guide variant of esw is a method of electroslag welding. Weldeyes welding procedures simplifies and speeds up the management of wps, wpqr, and pwps documents. Electroslag welding is a fusion welding process for joining thick work pieces by a single. Welding software by cspec asme aws en professionals. Solid wire electrodes, tubular cored electrodes and electrodeflux combinations for submerged arc welding of non alloy and fine grain steels. Recent developments in the design and application of magnetic trap devices electroslag and electrogas welding of cmn steel electrospark deposition for repair of worn components electrostatic bonding of silicon to glass element transfer in ferritic steel submergedarc welding elevated temperature midlife weldment cracking type iv embedded nonplanar defects in transmission pipeline welds encapsulants for implantable electronic medical devices engineering critical assessment of. For your structural steel applications, for any of the structural welding codes aws d1 codes for steels, aluminum or stainless steels, as well as aws b2. These indications were oriented parallel to the x axis of the weld, and were located at the fusion face, and also in the center of the weld. Instantly resolves disputes involving welding procedures, welder qualifications and other code issues.
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