Shielded metal arc welding machine parts and process. Size amperes volts speed position all 18 532 316 90150 120200 170280 2023 2124 2124 69 ipm 510 ipm 411 ipm all all flat, horizontal see attachment preheat comments. Shielded metal arc welding smaw is frequently referred to as stick or covered electrode welding. Rev date 09302014 printed copies of this document are uncontrolled. Arc welding is a type of welding that uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. Fume extraction is only one component in reducing welding fume. Welding, brazing, soldering does not include mechanical fastening such as bolts, rivets, screws, etc. Many times a combination of fume extraction, training, process change, andor consumable change is needed to reduce the amount of fume to acceptable levels. Welding procedure data sheets shall require a new welding procedure specification and or welding procedure data sheet. Pdf determination of welding parameters for shielded. Otherside we use this process for underwater welding, but the tools. You will need to adjust the time required for handson activity and testing based on your class size and resources. Welding procedure specificaton wps btc gmaw 9010 2011 prequalified per aws d1. Submerged arc welding saw is a common arc welding process.
History of welding the art of welding is an ancient one but the science of shielded metal arc welding is relatively new. Smaw is well known for its versatility because it can be used in all welding positions, and in both production and repair welding situations. Mar 04, 2015 6g pipe welding test is one of the chief concern in welding industry and primarily utilized in fabrication of pressure equipment like. Including the procedure specifications, test coupon preparation, welding machine set up, e7018 vertical up welding techniques, and finally the bend test results with pictures and details. Oct 31, 2018 shielded metal arc welding smaw is a fusion welding process that uses a consumable, fluxcoated electrode to create an arc between the electrode and the work piece. Stick welding application shielded metal arc welding is one of the most widely used processes, particularly for short welds in production, maintenance and repair work, and for field construction. Shielded metal arc welding or smaw is the preferred welding process used when the items to be joined are composed of iron including ductile iron and cast iron or different kinds of. Joints shall be made following the procedural stipulations indicated in applicable code, and may. The welding machine is hooked up to a power source, which creates either alternating current ac or direct current dc to form an arc between the electrode and the metal. Shielded metal arc welding smaw, or manual metal arc welding was first invented in russia in 1888. Arc welding, shielded metal arc welding, shielding in smaw, electrode coating, welding current, electrode size 11. Applying shielded metal arc welding smaw techniques. Guidelines for shielded metal arc welding smaw warning this document contains general information about the topics discussed herein.
Terms in this set 46 in smaw the molten weld pool is protected by. This forms the gas and slag to shield the arc and molten weld pool. Syncrowave 250 processes description tig gtaw welding stick smaw welding arc welding power source 60 hz, 50 hz om353 122200u. The national certified pipe welding bureau has a deep and abiding belief in codes and has always promoted compliance with them. The exact procedure for welding fill and cap passes is dependent on the characteristics of the pipe wall thickness, temperature, and position on the pipe, the skill of the welder, as well as the characteristics. As this arc forms, both the electrode and the metal melt. Smaw, fcaw, gtaw and gmaw welding processes explained apd. Users should also consider the selection of the welding process, welding procedure, or consumable. The modified short arc gmaw techniques offer a number of advantages over the conventional welding methods gmaw, gtaw and smaw when welding root passes from a single side without backing. Prequalified process smaw process type manual positions flat, horizontal base metals only steels in category a of table 3. Submerged arc welding saw is an arc welding process that produces joining of metals by heating them with an arc between a metal electrode and the work piece.
Smaw welding is a process which uses a consumable electrode which is covered with a flux. The electricity is passed through a tungsten electrode and is surrounded by a shielding gas. Weld steel pipe in 6g using smaw linkedin slideshare. Na 140 170 16 18 4 8to to to use of lanl welding procedures and welder qualifications for nonlanl work shall be at the sole risk and responsibility of the subcontractor, and the subcontractor shall indemnify and save lanl and the government harmless from any and all. The welding rod if used is consumed in the heat generated by the arc. 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.
This document is not an application manual and does not contain a complete statement of all factors pertaining to those topics. Smaw e7018 140 to to to to to to varies 3 12 gmawfcaw tube to work distance. Smaw, fcaw, gtaw and gmaw welding processes explained. Because laboratories often correspond to performance tasks, the proficiency of trainees may. 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. Welding procedure preparation the company shall have welding procedure specifications for each welding process in use, outlining the general welding procedure to be followed in the construction of weldments built in accordance with the governing design or manufacturing standard, or both. Shielded metal arc welding smaw is an arc welding process in which coalescence of metals is produced by heat from an electric arc that is maintained between the tip of a consumable covered.
Molten metal travels from the electrode via the electrical arc and is deposited into the work piece. Smaw stick welding cven 485 spring 2005 smaw shielded metal arc welding aws definition an arc welding process with an arc between a covered electrode and the weld pool. This numbering system will be used on all welding procedure specifications revised or developed in the future. Shielded metal arc welding smaw, also referred to as stick welding, is a simple and versatile welding technique predominantly used in field operations, including maintenance and repair, structural steel. This is the basic understanding of shielded metal arc welding smaw, often called stick welding. Gas tungsten arc welding gtaw or tungsten inert gas tig welding. Shielded metal arc welding machine parts smaw welding can use for anything weld joint or welding position. This is the second part of the 3 and 4g combo welding certification. The development of coated electrodes did not occur until the early 1900s when the kjellberg process was invented in sweden and the quasiarc method was introduced. Flux cored arc welding fcaw gas metal arc welding gmaw, also known as metal inert gas mig welding or hand wire welding. The first patent on the submergedarc welding saw process was taken out in 1935 and covered an electric arc beneath a bed of granulated flux. Shielded metal arc welding smaw, also known as manual metal arc welding mma or mmaw, flux shielded arc welding or informally as stick welding, is a manual arc welding process that uses a.
The new ncpwb welding procedure specification numbering system clearly defines the type of metals to be welded, the welding process used and allows for identification of variations in a process. This is the basic understanding of shielded metal arc welding smaw. Stick welding is among the most widely used welding processes. Welding procedure specification wps may be generated by an authorized person i. Pdf determination of welding parameters for shielded metal. Pdf modified short arc gmaw techniques for welding a. Welding procedure specification shielded metal arc. The equipment is relatively simple, inexpensive, and portable.
Originally developed and patented by jones, kennedy and rothermund, the process requires a continuously fed consumable solid or tubular. Shielded metal arc welding smaw, also known as manual metal arc welding mma or mmaw, flux shielded arc welding or informally as stick welding, is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld. Approximately 100 hours are suggested to cover smaw openroot pipe welds. Slagboy enterprises authorized by samuel slaghammer oct 28, 2011. With smaw stick electrodes, the idea is normally to fill the joint as quickly as possible. Direction of welding is vertical either with upward or downward progression. Lichtenberg electric fusion 1801 sir humpherydavy arc two poles 1860 wilde. Pdf modified short arc gmaw techniques for welding a root pass. Members have also access to handson welding procedure specifications wpss, that prepared by the code experts, for the csa w59csa w47.
Welding procedure specification shielded metal arc welding. This installation, operation, and maintenance of arc welding equipment and the. Ensure that trainees are properly briefed on the safe use of smaw welding equipment and are familiar with all appropriate safety precautions and procedures, including electrical safety. Shield metal arc welding smaw also known as manual metal arc welding mmaw page 3 of 21. This type of welding is most commonly used for aluminum, magnesium, stainless steel and copper alloys. Shielded metal arc welding smaw for field operations. Shielded metal arc welding smaw stick the shielded metal arc welding smaw stick process generates an arc between a fluxcoated consumable electrode and the workpiece.
Submerged arc welding an overview sciencedirect topics. The flux covering the electrode melts during welding. The art and science of joining metals by using the intrinsic adhesive and cohesive forces of attraction that exist within metals. Size amperes volts speed position all 18 532 316 90150 120200 170280 2023 2124 2124 69 ipm 510 ipm 411 ipm all all flat, horizontal see. Principles of shielded metal arc welding smaw shielded metal arc welding smaw or stick welding is a process which melts and joins metals by heating them with an arc between a coated metal electrode and the workpiece. Welding procedure specification shielded metal arc weldingsmaw. The first patent on the submergedarc welding saw process was taken out in 1935 and covered an electric arc beneath a bed of granulated. Syncrowave 250 processes description tig gtaw welding stick smaw welding arc welding power source 60 hz, 50 hz om353 122200u november 2000 visit our. It involved a bare metal rod with no flux coating to give a protective gas shield. Including the procedure specifications, test coupon preparation, welding machine set up, e7018 overhead welding techniques, and finally the bend test results with pictures and details. Approximately 100 hours are suggested to cover smaw. Shielded metal arc welding smaw is a fusion welding process that uses a consumable, fluxcoated electrode to create an arc between the electrode and the work piece. The slag must be chipped off the weld bead after welding.