The pipe welding techniques used and the procedure is also identical to the asme section ix pipe welding certification. The 2g and 5g combination welding certification is also considered a 6g certification. Flat position er70s6 electrode was used for gmaw er80sd2 electrode was used for gtaw no preheat or pwht procedure qualification record pqr needs to address the welding variables of each welding process. Welding positions it is important to know the different positions due to it being used to it being used to qualify welders. The 6g restrictive ring test position is typically an 18. Flat, horizontal, vertical and overhead welding positions 1g, 2g, 3g and 4g.
This pipe is most often thin schedule 40, for example and can be composed of materials such as carbon steel, low alloy. Process mode manual, semiautomatic, machine and auto. Welding in 5g and 6g positions on smaller diameter pipe smaller diameter pipe 10 inches or smaller is commonly found in applications ranging from hvac and highpressure steam to process piping, including pipe spools. For most welders, the metal that they certify in is carbon steel or a36 steel. For most pipe welders they will take the 6g welding certification and that certifies the welder for all position pipe welding plus all position structural welding. These numberletter designations refer to test positions. The 1g and 5g horizontal and 2g vertical positions refer to the pipe position. 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. For instance, if a welder only a 1g position qualification, he cannot conduct welding in more advanced positions such as 2g, 5g, or 6g. In 1g and 1f, the number 1 refers to the flat position, while the letter g stands for a groove weld and letter f stands for a fillet weld. Flat position 1g or 1f horizontal position 2g or 2f vertical position 3g or 3f overhead position 4g or 4f note. The welder has primary responsibility is tig and mig welding of aluminum and steel also, stainless steel parts.
Welding positions free download as powerpoint presentation. When obtaining certification directly from the american welding society, the applicant must complete the certification registration form, which includes personal information, what types of certification the applicant is attempting and the applicants test score. Welding positions production welding positions groove welds fillet welds standard test positions positions 1g, 3g, 6g, 2f, 5f, etc. Each job must be run with safety, accuracy and timeliness in the welding area. Types of welding positions welding positions for plate.
Its stringent test, because the welder must use a variety of techniques, such as flat, vertical and horizontal welding to achieve a successful 6g weld. Base 2lnd filler materials, welding variables and heat treatmlntsmustfollow production plans within specified ranges. In other words, mastery over each position levels up a welders qualifications. These are positions a welder would be required to use during a welding qualification test. Pj pipe position for welding downwards inclined position formerly pg. In actual shop fabrication welding can be in any intermediate position. Restricted tests come in the 2g, 5g, and 6g positions but most of the time it will be a 6gr or 6g restricted test positions. In 5 g welding is done vertically either upwards or downwards. What are the 1g, 2g, 5g, and 6g pipe welding positions. General instructions for testing welders positions are illustrated in qw461. It is easiest and efficient type of weld to be performed. 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. Types of welding positions welds are categorized according to the positions of the welds during welding. In the 6g welding position, the pipe slopes at approximately 45 from the horizontal x axis or 45 from the vertical y axis.
G designates groove welding vgroove, jgroove, ugroove etc. The 2g pipe welding position is fixed and can not be moved at all. Welding positions iso, asme and aws welding software. Smaw is a wellestablished form of welding used extensively in commercial and industrial applications around the world.
Its important to understand the types of welding positions as different welding processes require to be performed at a certain position of the welder. 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. If one clear 6g test, he will automatically qualifies for all. Qualifications for pipe welding are usually done in the 6g or in both 2g and 5g positions.
Pipe in a sloping position which is around 45 degrees from the horizontal axis xaxis or 45 degrees from the vertical axis yaxis. However, othervariables such as jointgeometry or weldin. The american welding society has defined the four basic welding positions as shown below. This is one of most commonly used and convenient welding position. But for clarity, we will give you the complete picture of each.
Both are related to pipe tubular structure welding these are welding position to which a welder welding procedure is qualified to. For a fillet weld made in the flat position, the numberletter designation is 1f f for fillet. In this position the both plates and the axis of the weld are horizontal. Welding certification a basic guide from structural to. Note the welding progression, vertically upwards or downwards, must always be stated and it is an essential variable for both procedures and performance qualifications. Asme sec ix welding procedure and performance qualification dr g ravichandran sr manager, wri, bhel, trichy welding procedure specification it is a written document that provides direction to the welder for making production welds in accordance with code requirements. If a welder has attained a 6g position qualification, he or she is permitted to carry out welding in the 1g, 2g, and 5g positions. Direction of welding is vertical either with upward or downward progression. For more details on pipe welding techniques, positions and how to get that certification. Only the welder has enough experience capable of welding with a 6g position. Welding positions are the positional relation between the welder and the production piece to be welded. The 5g pipe welding position is similar to the 1gr position but it can not be rolled or moved. The welder conducts welding from the top of the pipe.
Nandesh, these are the en 287 designations for welding positions. For plate welding, we have four different positions namely. The basics of welding certifications and test positions. The 6g welding certification is far from easy to pass and has a lot. For instance if a welder gets qualified with a 6g position that welder would be qualified to weld in any of the other positions. As a result, the 6g pipe welding certification is one of the most soughtafter certifications in the industry. The welding position refers to the position of the welding operator towards the workpiece to be welded. Pdf download basic arc welding smaw pdf full ebook.
Wc474 welding positions for groove and fillet welds poster. Welding position is determined by the pipe position and if the pipe is in a fixed. The purpose of this video is to educate my student about pipe welding,its a great help to. Some welding processes have all position capabilities, while others may be used in only one or two positions. Welding positions, a reference to the positional aspects of welding. Welding positions for plate and pipe 1g, 2g, 3g, 4g, 5g, 6g, 6gr. Source extraction local exhaust is a mechanical device used to capture welding fume at or near the arc and filter contaminants out of the air. Guidelines for gas tungsten arc welding gtaw tig gtaw welding for product information, owners manual translations. The process for obtaining pipe welding 6g certification varies from provider to provider. Flat welding in flat welding, plates to be welded are placed on the horizontal plane and weld bead is also deposited horizontally fig.
Guidelines for shielded metal arc welding smaw for product information, owners manual translations, and more, visit. Wc474 welding positions for groove and fillet welds poster author. Bureau welders are expected to be qualified to weld in all positions. Welding positions according to din en iso 6947 messer group. Flat, horizontal, vertical and overhead welding positions 1g, 2g, 3g and 4g similarly 1f, 2f, 3f. There is also a 6gr position, which is the 6g position with a restriction simulating ring around the pipe. They can be classified into four welding positions.
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