The meaning of 6G position in Welding is mean that the pipe or test piece inclined to 45 degree and not rotated during welding process .
Actually I usually crowd the puddle when welding vertical up. The longer the arc length the more the arc can wander.
Heat rises so in my experience it is always overhead that has the most heat input.
Welding in the horizontal position involves holding the workpiece in a horizontal plane and positioning the welding torch or electrode appropriately. To achieve a stable arc, it's important to maintain a slight angle for the torch or electrode, typically around 10-15 degrees, tilted back toward the weld pool. Ensure proper control of the heat input to avoid excessive penetration or distortion. Using consistent speed and technique will help produce a strong, clean weld.
The ideal length of arc in welding typically ranges from 1/16 to 1/8 inch, depending on the welding process and material being used. A shorter arc length tends to produce a more concentrated heat, leading to deeper penetration, while a longer arc can create a wider bead but may result in a lack of penetration. Maintaining the proper arc length is crucial for achieving optimal weld quality and preventing defects. Adjustments may be necessary based on factors like electrode type and position.
The arc length in stick welding should typically be about the thickness of a nickel, roughly 1/8 inch (3 mm). Maintaining this distance helps ensure a stable arc and optimal heat transfer, resulting in better weld quality. Too short an arc can lead to excessive spatter and a poor weld, while too long an arc may cause incomplete fusion and increased porosity. Adjust the arc length based on the specific electrode and welding position for best results.
6G means the pipe is positioned at a 45o angle.
Look at a wall. Imagine welding on that wall from left to right or right to left. That is horizontal welding.
In my point you, every 60 degree the welding was carry on.
The most common pipe welding testing position is the 6G position, which involves welding at a 45-degree angle while the pipe is in a fixed position. This position tests the welder's ability to perform welds in all directions and is particularly challenging due to the varying angles involved. It is widely used in various industries, including oil and gas, to assess the skills required for complex pipe welds. Other positions like 1G, 2G, 5G, and 6G are also used, but 6G is considered the most rigorous and indicative of a welder's overall competence.
7018 structural 6010 root, 7018 cover for pipe
In 6G the pipe/tube inclination is fixed at a 45° (+/- 5°) and is not rotated. If the welder qualifies in this position they are generally qualified for 1G, 2G, 3G, 4G, 5G, and 6G. Also depending on code and company specification They could be qualified or fillet welds in certain positions. The 6GR position is in the same inclination and inclination as above, however it has a restriction ring around the pipe/tube. This is used to qualify for T-, K-, or Y- connections.
E - Stands for Electrode 60 - 60,000 tensile strength. 1 - in all position welding can be done 0 - cellulose
The meaning of MPI in welding is Magnetic Particle Inspection.
Depends on applicants expertise. If you are a welder, tell them what welding processes you knew, then what welding joint design you can weld and the welding position you can perform.
E stands for Electrode,70 stands for tensile strength,1 stands for position of welding that is for all positions 8 stands for flux coating.
Actually I usually crowd the puddle when welding vertical up. The longer the arc length the more the arc can wander.
4G is a welding position. The '4' means the weld is to be made in the overhead position. The 'G' means the weld is a groove weld.