Magnum NDT technicians encounter many distinctive fastening positions once playing non-destructive testing. In undisciplined hands, fastening is often a security hazard. That’s why skilled commonplace organizations like ASME, AWS, ISO, JWES build rules and classifications for fastening positions.
Welders should be certified in every position so as to perform those styles of welds. Pipe welding position is often divided into four groups: 1G, 2G, 5G, and 6G.
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1g Welding Postion
In the 1G fastening position, the pipe is within the horizontal position and may be turned on the horizontal (X) axis. The welder’s position remains stationary. Fastening is performed on the highest of the pipe. This is often the foremost basic fastening position that may be performed.
2g weld position
In the 2G fastening position, the pipe is within the vertical position and may be turned on the vertical (Y) axis. The welder’s position remains stationary. Welding is performed on the aspect of the pipe in a horizontal direction.
5g welding position
In the 5G fastening position, the pipe is within the horizontal position. not like the 1G position, the pipe is during a fastened position and it can not be turned. The artisan moves around the pipe within the vertical direction to perform the fastening.
6g weld position
In the 6G fastening position, the pipe slopes at more or less 45° from the horizontal (X) axis or 45° from the vertical (Y) axis. The pipe is during a fastened position, therefore the artisan should move around the pipe to perform the fastening. this is often a complicated fastening position that needs an excellent deal of expertise and technical experience.
A welder’s mastery over every fastening position acts as a certification that qualifies him or her to perform additional styles of fastening work. In alternative words, mastery over every position levels up a welder’s qualifications. For example, if an artisan solely a 1G position qualification, he cannot conduct fastening in additional advanced positions like 2G, 5G, or 6G.
If an artisan has earned a 6G position qualification, he or she is permissible to hold out fastening within the 1G, 2G, and 5G positions. These standards should be maintained so as to preserve the security of the work setting.
Welding, as most people square measure aware, maybe a methodology of change of integrity 2 or additional materials with heat – electrically generated, fuel gas generated, friction, pressure, explosives, or perhaps sound.
All fastening work is historically wiped out one amongst four totally different positions – Flat, Horizontal, Vertical and Overhead. An artisan should be acquainted with these positions as he would be needed to use these positions properly throughout a fastening qualification check.
It’s so essential that you simply have a decent understanding and apply the techniques for fastening in every of the check positions.
Why need four positions?
The need for four totally different positions is a result of the fastening that affects the flow of liquified filler metal. Within the flat position, the law of gravity attracts the liquified metal downward into the joint creating the fastening faster and easier. Horizontal fastening is comparatively tough, as a result of the liquified metal sags or flows down onto the lower plate.
Vertical fastening is completed in a very vertical line from bottom to prime. The overhead fastening position is that the toughest position. Since the weld metal flows downward, the overhead position demands sizeable observe to provide impeccable quality welds.
Though the terms flat, horizontal, vertical, and overhead precisely describe the positions for plate fastening, they are doing not sufficiently describe pipe fastening positions. In pipe fastening, there square measure four basic check positions used however the positions check with the position of the pipe and not the position of the person fastening.
The difference between each position
The different fastening positions for pipe fastening square measure 1G, 2G, 5G, and 6G positions. The 1G is a horizontal rolled position weld. The 2G is Vertical Position. The 5G is a horizontal fastened position. and therefore the 6G is inclined fastened position that’s at concerning forty-five degrees.
It is necessary that you simply perceive the fastening position norms. As an example, if an artisan gets qualified in a very 6G position that person would be qualified to weld in any of the opposite positions. However, if the artisan gets qualified to weld within the 1G position, then that person would solely be qualified to weld within the 1G position.
It is so imperative that you simply properly certify to scan the code you’re testing too. Again, obtaining qualified in a very bound position doesn’t essentially mean that you simply square measure qualified to weld on all materials and of all thickness.
Please note that the thickness as additionally the materials ought to be determined by the code you’re qualifying to.
Preference of positions for welding
If you’re discussing the flat, horizontal, vertical, or overhead fastening position, flat is often preferred. it’s typically less complicated for an artisan to figure flat welds and so they’re more cost-effective.
The prime reason why you’ve got to weld in alternative positions is that the structure that’s being assembled can not be repositioned within the manner you would like. Technically speaking, a professional artisan ought to be able to manufacture constant quality of weld no matter the positions.
Putting the conductor into the holder at a ninety-degree angle is prescribed for flat position fastening and golf shot the conductor straight out is usually recommended for fastening within the overhead position.
If you recognize a professional and intimate weld operator, raise him/her to look at your weld and additionally examine your finished welds. they’ll tell you plenty concerning what you will be doing is true and what must be corrected.
Gotten your information about pipe positions? Nows the time to learn more about How To Replace Rocker Panels Without Welding!
Now that you have gotten all the information you may need to get yourself started on your journey to welding, what are you waiting for?
These pipe welding position guides should now be able to help you take your welding position to the next level. With the inclusion of the 2g position, 5g position, 6g position, your welding jobs should advance and stay more long-lasting!
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