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Welding position
The spatial position of the welded joint during fusion welding
The welding position is the spatial position of the weldment seam during fusion welding, which can be expressed by the weld Angle and the weld Angle. There are horizontal welding, vertical welding, horizontal welding and upward welding positions. Horizontal welding is the easiest to ensure the quality of welding, followed by horizontal welding, vertical welding followed, and overhead welding is the most difficult to ensure the quality, should be avoided as far as possible. Welding position refers to the spatial position of the weldment seam during fusion welding, which can be expressed by weld inclination and weld Angle.
- Chinese name
- Welding position
- Foreign name
- welding position
- connotative
- The spatial position of the welded joint during fusion welding
- Representation mode
- It is expressed by weld Angle and weld Angle
- subject
- Welding technology and engineering
- Abbreviated form
- Weld position
The welding position is referred to as the welding position. When welding, the relative spatial position of the weld to the welder. There are horizontal welding, horizontal welding, vertical welding and upward welding positions. Flat welding refers to the horizontal welding of the welder's head, so it is also called downward welding; For the weld in the T-shaped connection, the T-shaped weldment is often placed at 45° to form the welding position of the inclined weld, which is also known as ship-shaped welding. Horizontal welding means that the welder performs horizontal welding at approximately arm height. Vertical welding means that the welder performs a vertical weld weld from the bottom up. Overhead welding refers to the horizontal welding of the welder's head. Horizontal welding is the easiest to ensure the quality of welding, followed by horizontal welding, vertical welding followed, and overhead welding is the most difficult to ensure the quality, should be avoided as far as possible.
Welding position refers to the spatial position of the weldment seam during fusion welding, which can be expressed by weld inclination and weld Angle, including flat welding, vertical welding, horizontal welding and overhead welding positions.
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terminology
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Instructions
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symbol
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Dip Angle S
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Angle R
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Flush position
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In horizontal welding, the center line of the weld is vertical and the surface of the weld is upward
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PA
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0 °
180 °
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90 °
90 °
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Flat fillet weld position
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Horizontal welding, weld surface up
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PB
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0 °
0 °
180 °
180 °
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45 °
135 °
45 °
135 °
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Transverse position
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For horizontal welding, the center line of the weld is horizontal
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PC
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0 °
0 °
180 °
180 °
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0 °
180 °
0 °
180 °
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Elevation fillet welding position
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Horizontal welding, look up, weld surface down
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PD
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0 °
0 °
180 °
180 °
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225 °
315 °
225 °
315 °
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Upside-down position
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Horizontal welding, look up, weld center line is vertical, weld surface down
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PE
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0 °
180 °
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270 °
270 °
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Upward vertical welding position
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Welding direction is from bottom to top
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PF
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90 °
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Downward vertical welding position
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The welding direction is from top to bottom
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PG
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270 °
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note
1 To avoid confusion with existing abbreviations, such as "F" for flat welding, in principle the letter "P" for position should be placed before the symbol for primary position
2 Tolerances for major positions are not specified in this standard because they depend on the different welder processes used
[1]
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The Angle between the axis of the weld and the horizontal plane (as shown in Figure 1).
FIG. 1 Weld Angle [2]
The Angle between the center line of the weld (the center line of the weld root and the cover layer) and the Y axis of the horizontal reference surface (as shown in Figure 2).
Figure 2 Weld Angle [2]
The positions of flat welding, flat fillet welding, horizontal welding, elevation welding, overhead welding and vertical welding are shown in Figure 3.
Figure 3 Welding position [2]
