3f Welding Position

 



What is welding position?

This is the easiest welding position since you are welding with gravity. Horizontal Welding Position 2F and 2G. The number 2 position is horizontal. The weld will have a tendency to sag on the lower side so you must compensate for this. Vertical Welding Position 3F and 3G. The number 3 position position. 3F uphill PH 5G uphill 5F uphill 6G uphill HL-045 PG 'vertical down' 3G downhill 3F downhill PJ 5G downhill 5F downhill 6G downhill JL-045 PK Orbital welding Note: There is also a 6GR position, which is the 6G position with a restriction simulating ring around the pipe. Vertical Welding Position (3F or 3G Symbol) In this position, the weld and the plate lie vertically (at least approximately vertically). Here, the gravity draws the molten metal down which is why many novice welders experience pile up. But there is a way to ensure this doesn’t happen! You just have to use an upward or downhill position.

What is welding position. Before getting knowledge about the welding position, one must have a look at the types of weld used in welding position. There are two types of weld commonly used in welding position, a Fillet weld, a Groove weld.

Welding

Fillet weld is method to join two pieces of metals perpendicularly or at some angle. They are also recognized as the T joint or a Lap joint (Lap joint is when metal piece overlap each other and their edges are welded). The weld is forms in shape of triangle and generally used while connecting Pipes. It is also called a closed weld because the weld metal need not be cut to join.
Groove weld is made in the groove of the metals to be joining. It needs a full penetration to have strong joint. These welds are used for butt edge and corner joints. Groove welds are stronger than fillet welds.

  1. 3 shows the vertical welding position (including 3G and 3F positions) 4 shows the overhead welding position (including 4G and 4F positions) Q2: What is the difference between groove and fillet weld? The name of the groove welds comes from the characteristics of the weld. It is common to create a groove between welded sheets to make harmony.
  2. PF / 3G 3F Welding in vertical up position In vertical welding, plates to be welded are placed on the vertical plane and weld bead is also deposited vertically. In case of thick material use of linear or pendulum oscillation is necessary to achieve high-quality weave welds. Vertical groove weld PC / 3G Vertical.

Now, you are familiar with the common types of welds performed in the welding position. Now here comes the question, what are welding positions Welds are categorized according to the positions of the welds during welding.. Basic welding positions are of 4 types which are Flat position, Horizontal position, Vertical position and overhead position. Now let us discuss these positions in details for clarity.

Welding

1. Flat position: Flat: It is easiest and convenient type of weld to be performed. Let us suppose that we want to weld two plates. In this position the both plates and the axis of the weld are horizontal. This position is sometimes called down hand. For fillet weld it is named as 1F (1 means the flat position and F means the fillet weld) and for Groove weld it is named as 1G ( 1 means the Flat welding and G means the groove weld). In Flat position gravity draws molten metal downward in joint which makes the joint easy and quick.

2. Horizontal: In this position the plates are vertical and the axis of the weld is horizontal. It is difficult than flat joint because the molten metal flow down to lower plate. It is named as 2G for groove weld( 2 stands for horizontal and G stands for groove weld) and 2F for fillet weld ( 2 stands Horizontal position and F stands for Fillet weld).

3. Vertical: In this position the plates and welds axis both are vertical. Positions are named as 3F ( 3 for Vertical and F for fillet welds) and 3G ( 3 refers as vertical position and G for Groove weld)

4. Overhead: Most difficult and complicated to be performed than the above said positions. It is named as 4G ( 4 means overhead and G for groove weld
And 4F (4 means overhead and F represents Fillet weld). In this position the face of the weld is overhead.

There are three more types of welding positions 5G,6G, 5F
5G welding position is the welding of the pipe in horizontal position that cannot move and is fixed. It is also named as PF in ISO/EN standards. In 5 G welding is done vertically either upwards or downwards. 6 G position is used to weld a pipe joint inclined at an angle of 45 degree. If one clear 6G test, he will automatically qualifies for all the welding position. Welder qualifies with 6G welding position is major concern of the most of the industries. 5 F welding position is for fillet weld. In this position a pipe (in horizontal) and the plate (vertically) are welded. Welder had to make a fillet weld overhead. On passing 5 F test welder passes to weld in all positions. It is very uncommon and not a easy task to perform.

What is welding position?
Description
What is welding position? Before getting knowledge about the welding position, one must have a look at the types of weld used in welding position.
Author
According to Russian standards, space welds are classified according to the following standard:
3f Welding Position
- Welding (welding) is the welding of the distribution of the plane from 0 to 60 degrees
- Hanging (welded) welds are welds distributed on planes at angles from 60º to 120º.
- Horizontal welds are welds distributed on the planes in the angle of 60º to 120º, welded parallel to the horizontal plane.
- Ceiling welds are welds distributed on planes at angles from 120º to 180º

Mig Welding 3f Position

. Often when welding welder face upward towards the arc so also called welding backstroke.
Welding positions in most cases are divided into welded structures and welded tubes. The structural position is for sheet welded, tubular welding positions are also applied with solder pipes to the plate or to the tilted plane.
Structured welding sites are encoded according to the following rules:
With the first digit representing the welding position:
2: Horizontal welding position
4: ceiling welding position
From the rule above we have the following welding positions:
For welded pipe location and weld type are also classified as follows
1: Horizontal position and welding welder in welding position by rotating tube
2: Stand position and welders perform horizontal weld.
5: Fixed horizontal pipe position and welded solder, ceiling weld and weld.
6: The pipe is at 45 ° and the welder performs welding in the welding position, horizontal welding, vertical welding and ceiling welding.
F: Angle welds.
R: Restricted position.
The 'R' or restricted position is described in more complex cases.

Gmaw 3f Welding Position

From the above rule we have the position of welded pipe as follows

Weld Position Chart

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