Experience gained from user contact and welding training of crewmembers showed that. Welding procedure specification 201045f43 1 982005 1192005 20045al6xn 45 45 astm b688 sb351 astm b688 sb351all all 00 0. Use of lanl welding procedures and welder qualifications for nonlanl work shall be at the sole risk and. It is easiest and efficient type of weld to be performed. Secure pdf files include digital rights management drm software. Drm is included at the request of the publisher, as it helps them. There will be a brief description of the first two documents. As a result, the 6g pipe welding certification is one of the most soughtafter certifications in the industry. Since welding pipe in the 6g position covers all of the pipe welding positions the information on this page can be applied to welding pipe in any position. If you played quidditch, what position would you have. Apply to welder, mechanic, diesel mechanic and more.
Flat position 1g,horizontal position 2g,vertical position 3g,overhead position 4g,multiple. Shielded metal arc welding is welding where fusion is produced by heating with an. Deutsche norm may 1997 welds working positions definitions of angles of slope and rotation. For detailed information on the definition of the various welding positions please consult appendix e of csa standard w59, welded steel construction metal arc welding or aws a3. This handbook covers various welding processes, weld types, different electric arc welding processes, safety in electric arc welding, welding electrodes, oxy acetylene gas welding, its equipment, safety in gas welding filler rods, oxy acetylene gas cutting etc. Types of welding positions welds are categorized according to the positions of the welds during welding. Welding is the melting, flowing together, and freezing of metals under controlled conditions. The welding positions shown above are commonly used by codes when qualifying welders. Relevant sketches are given wherever required to make the subject interesting. This modification may cause customers and users to modify their relevant documents.
Types of welding position this chapter presents common types of welding position and various difficulties associated with them. The arc is struck between the metal to be welded and a flux coated consumable. Welding syllabus revised 810 wldg 2406 intermediate pipe welding smaw semester hours. This is the easiest welding position since you are welding with gravity. General instructions for testing welders positions are illustrated in qw461. Personnel performing nde for acceptance in support of the lanl welding program shall be qualified and certified in accordance with the following. How to select amperage for a welding rod career trend. Welding positions en iso 6947 and asme use the same welding positions, but with different labels. Make sure that code users understand the difference between testing positions and production welding positions in my understanding this expresses the reality in welder qualification. The welding rod sustains the welding arc and also provides the filler metal needed for the joint to be permanently bonded together.
The it is limited to the positions for which the welder is qualified. Plate will always be designated with an f or g and pipe will have no designation since it is always a groove weld. Since welding rods are powered by electric currents through the welding machine. Types of welding positions welding positions for plate. Mostly welding connections on pipes use groove joints type so we often hear the term pipe welding position. In this position the both plates and the axis of the weld are horizontal. Welding positions production welding positions groove welds fillet welds standard test positions positions 1g, 3g, 6g, 2f, 5f, etc. In general, the pipe welding position is divided into 2 types, namely the welding position on the groove joint and the welding position on the fillet joint. There are two types of weld commonly used in welding position, a fillet weld, a groove weld. Tig welding in the 6g position pictures and help hello im trying to get ready for a g6 tig welding tset on 28mm dia pipe 5. There are four welding positions for plate and four positions for pipe. The thickness and materials should be determined by the code you are qualifying to. The information and guidelines in this welding handbook are based on general.
This video is about different types of plate welding positions i. Perform field welding only when called for on the plans and in accordance with 107220. And by the way any flux core welding wire can be welded downhill, whether you should is another matter. For more details on pipe welding techniques, positions and how to get that certification.
Successful testing in these positions qualified the welder for all positions. To qualify a welder for a different welding position, one has to define the range of where a particular position e. 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. Welding positions free download as powerpoint presentation. In this position, the pipe is rolled so that the welding is done in the flat position with the pipe rotating under the arc. For mma smaw welding, use basic coated electrodes, e. Note, downloadable versions are below the table for printing. Approved for public release, distribution is unlimited. Certain welding codes provide for an all position qualification by taking them together.
The 1g and 5g horizontal and 2g vertical positions refer to the pipe position. The code futher restricts welding to the vertical up position but there are some exceptions especially when welding tubular products. Din en 103051 steel tubes for precision applications technical delivery conditions part 1. Welding positions are the positional relation between the welder and the production piece to be welded. Flat welding in flat welding, plates to be welded are placed on the horizontal plane and weld bead is also deposited horizontally fig. Further, need for edge preparation and the rationale for selection of suitable groove design have also been presented. As pipe welding is so difficult, welders who excel at this skill tend to earn higher salaries than those employed to use other welding techniques. Most fabrication documents require qualification of welding procedures and welders. Position of welds will be 1g, 2g, 5g and 6g using various electrodes. Also getting qualified in a certain position does not mean that you are qualified to weld on all materials and all thickness. Welding positions iso, asme and aws weldnote welding. For dissimilar thicknesses, each thickness is given its own approval range.
Welding engineering basics of welding welding processes welding safety. This alloy is often used for welding type er320 stainless steels. Qualifications for pipe welding are usually done in the 6g or in both 2g and 5g positions. There is also a 6gr position, which is the 6g position with a restriction simulating ring around the pipe. In welding, the welding rod, which is sometimes known as a welding electrode, is a metal wire with a chemical coating called flux. Fillet weld positions 1f the flat 1f fillet position is performed where the filler weld is rotated so that the filler material will be level with the ground. The pipe welding techniques used and the procedure is also identical to the asme section ix pipe welding certification.
The direction of welding is an essential parameter for determining the working posi tion, e. Basic very low hydrogen all position electrode hdm general welding standards. All welding can be classified according to the position of the workpiece or the position of the welded joint on the plates or sections being welded. Welding procedures specification for flux cored arc. Generally available control technology for the welding operations id no. When you are welding in the 2g position, the pipe is placed in the vertical position so the welding can be done in the horizontal position. This is one of most commonly used and convenient welding position. Aws e7016 or e7018, preferably vacuum packed, or dried at the temperature and time recommended by the electrode manufacturer to give a weld metal hydrogen content below 5ml100g. Welding position is determined by the pipe position and if the pipe is in a fixed position. Both 6g and 6gr are welded in the same position that is fixed at an incline of 45deg. Arc welding uses electricity to heat and melt the metal.
Welding positions according to din en iso 6947 messer group. One annex gives examples of the limits of the slope of a weld axis and the rotation of the weld face about the weld axis for welding positions. Pe overhead position pf vertical up position pg vertical down position ph pipe position for welding upwards formerly pf pj pipe position for welding downwards inclined position formerly pg welding positions according to din en iso 6947 pipe rotation pipe rotation pipe rotation pipe fixed pipe fixed pipe fixed jl045 pipe fixed welding downwards. Dw series includes those suitable for outofposition welding and those. They can be classified into four welding positions.
Prequalified process gmaw process type semiautomatic position flat base metals austenitic stainless steel alloy grades 304, 304l, 316 or 316l of group a or b of table 3. The 4g overhead stick welding test is often given along with the 3g vertical plate test. Er320lr has a composition similar to er320, except that carbon, silicon, phosphorus, and sulfur levels are kept at a lower level. Welding positions according to din en iso 6947 pipe rotation pipe rotation pipe. A comprehensive course on the welding of pipe using the shielded metal arc welding smaw process. Bureau welders are expected to be qualified to weld in all positions. Fillet weld is method to join two pieces of metals perpendicularly or at some angle. Excellent weldability with spray arc droplet transfer in all welding positions. 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. Note the welding progression, vertically upwards or downwards, must always be stated and it is an essential variable for both procedures and performance qualifications. Some welding processes have allposition capabilities, while others may be used in only one or two positions. Note, the thickness of weld deposit should be checked for each welding process involved and the sum of each deposit must not exceed the thickness of the parent metal.
Below are links to the different types of welding positions. Flat, horizontal, vertical and overhead welding positions 1g, 2g, 3g and 4g. Welding positions 1 scope this standard defines working positions for welding, and makes it possible to locate welds in space with reference to the horizontal reference plane usually parallel to the workshop floor by means of angles of slope and rotation, which are independent from surrounding construction. The low melting residuals are limited in this alloy to reduce micro fissuring. In actual shop fabrication welding can be in any intermediate position. This guide, and all the information contained within, is intended to provide you with helpful hints for basic welding. Remove paint or galvanizing at the location of field welds by blast cleaning sspc sp6 finish, or hand sspc sp2 finish or power tool cleaning sspc sp3 finish just prior to welding. Applying shielded metal arc welding smaw techniques. Before getting knowledge about the welding position, one must have a look at the types of weld used in welding position. Modern welding, althouse, turnquist, bowditch course description. Trillium construction is now hiring combo welders for a temp to hire position. Working in the ships operating environment, in awkward positions, and with the numerous kinds of metals. Some welding processes have all position capabilities, while others may be used in only one or two positions.
The pipe welding position is divided into 4 groups, namely 1g, 2g, 5g and 6g. The 6g welding certification is far from easy to pass and has a lot. Flat welding, horizontal welding, vertical and overhead welding, groove weld, edge. The american welding society has defined the four basic welding positions as shown below. Everyone realises it has nothing to do with welding processes but i dont think anyone has really explained what the terms mean or even the difference between the two. With direct supervision from a lead technician, maintenance supervisor or maintenance manager, a maintenance.