What is Flat Welding? What is Vertical Welding?

When the weld is in a horizontal position, welding is called flat welding; When the weld is in a vertical position, it is called vertical welding.

In addition, the welding of the interface where the pipe is in a horizontal position is called all-position welding.

The weld is in a horizontal position, and the welding seam is called upward welding.

Schematic diagram of flat welding.

Schematic diagram of vertical welding.

Automatic welding in all positions**.

Hull back-welded**.

For example, if you draw the first line from the top of a round pipe with a large diameter, and then draw a line every 45 degrees, then:

The welding along the topmost line is flat welding, which is represented by the letters PA;

The wire along which it is at an angle of 45 degrees is welded as flat fillet welding, also known as fillet welding, which is represented by the letters PB;

Welding along the horizontal line is horizontal welding, which is indicated by the letter PC;

The wire that is below the horizontal line and at an angle of 45 degrees is welded as an elevation angle weld, and the letter is indicated as PD;

Welding along the bottom end of the wire is upward welding, which is generally called upward face welding for the sake of avoidance, and is represented by the letter PE;

There are also two kinds: vertical upward welding (also known as vertical welding) is represented by the letter pf.

Vertical downward welding (also known as burning downstream) is represented by the letter PG.

Vertical welding refers to welding along the joint from top to bottom or from bottom to top. The welding position with a weld inclination angle of 90° (vertical upward) is called the vertical welding position. Welding that is carried out at a vertical welding position is called vertical welding.

Flat welding. Welding in a flat welding position.

Flat welding position. The welding position with the weld inclination angle of 0° and the weld rotation angle of 90°.

Vertical welding. Welding at a vertical welding position.

Vertical welding position. The welding position of the weld inclination angle is 90° (vertical upward) and 270° (vertical downward).

1 Butt flat welding.

1) Groove butt flat welding.

When the plate thickness is less than 6mm, the I-shaped groove butt flat welding is generally used. Generally, double-sided double-pass welding is used, and the diameter of the electrode is.

2) V-shaped groove butt flat welding.

When the plate thickness exceeds 6mm, because the heat of the arc is difficult to penetrate into the root of the groove, it is necessary to open a single V-shaped groove or a double V-shaped groove, and multi-layer welding or multi-layer multi-pass welding can be adopted.

When multi-layer welding, the first layer should choose a welding rod with a smaller diameter, and the method of transporting the rod should be determined according to the diameter of the welding rod and the gap between the groove. When welding each layer in the future, a larger electrode diameter and welding current are used for welding. Each layer of weld joints should be staggered from each other.

2 T-joint flat fillet welding.

When the T-joint is welded by flat fillet welding, it is easy to produce defects such as lack of penetration, welding nodules, undercuts, and slag inclusions, especially the vertical plate is easy to undercut. In order to prevent the above defects, in addition to the correct selection of welding parameters during welding, the angle of the welding rod must be adjusted according to the thickness of the two plates, and the arc should be biased to one side of the thick plate, so that the heating temperature of the two plates is uniform. Short-arc welding should be used as much as possible in the welding process.

In order to prevent welding deviation and undercut on the vertical plate, when the weldment can be turned, the weldment should be placed in a boat-shaped welding position as much as possible for welding, so as to avoid defects such as undercut, the weld is smooth and beautiful, and the large-diameter electrode and large welding current can be used, and it is easy to operate, so as to improve production efficiency.

3. Lap joint fillet welding.

When lap joint flat fillet welding, the main difficulty is that the edge of the upper plate is susceptible to the arc high temperature melting and undercut defects, and it is also easy to weld deviation, so it is necessary to master the welding rod angle and the method of transporting the bar. The angle between the welding rod and the surface of the lower plate should increase with the increase of the thickness of the lower plate, and the lap flat welding can also be divided into single-layer welding, multi-layer welding, and multi-layer multi-pass welding according to the different thickness of the plate. The approach is basically similar to that of a T-joint.

Summary. Hello answer, the ripples formed by the welding pool during flat welding are very fine and flat; The ripple is sideways when welded horizontally; When vertical welding, it will form a downward spiral.

Horizontal welding, vertical welding, flat welding, what is horizontal welding, vertical welding, flat welding.

Hello answer, the ripples formed by the welding pool during flat welding are very fine and flat; The ripple is sideways when welded horizontally; When vertical welding, it will form a downward spiral.

Transverse welding is the welding of a weld in the horizontal direction on a vertical or inclined plane.

Vertical welding: Welding at a vertical welding position. Weld inclination 90° (vertical) flat weldingWelding is performed in a flat welding position.

The ripple is sideways when welded horizontally;

Novices learn the teaching of electric welding flat welding, the current is appropriate, and the coating is automatically warped ......

There are also many welding methods for flat welding, depending on the size of the weld, the width and the side? There is a z-word method, a back and forth method, and you can also go forward without moving the arc and going straight forward! The most complicated thing is to wrap around the eight-character method, and don't use the eight-character method when you see the dishes.

The slightly thicker current of the base metal can be slightly larger, remember that the swing of Z-shaped welding must be uniform! Keep the arc as low as possible, otherwise pores will be formed....

Welding flat seams is to walk forward and take a belt, or you can drag it directly without bringing it.

Transverse welding is the welding of a weld in the horizontal direction on a vertical or inclined plane. Short-arc welding should be used, and a smaller diameter welding current should be selected, as well as an appropriate transport method. ”

Hello, horizontal welding, vertical welding are both standard terms for welding position, for the interpretation of the welding position legend, as follows:

Among them, 2g is horizontal welding, and 3g is vertical welding. 1g is flat welding.

Hello 1Fusion welding metals rely mainly on their own weight to transition to the weld pool.

2.The shape of the melt pool and the metal pool are easy to maintain and control.

3.When welding metal with the same thickness, the welding current at the flat welding position is larger than that at other welding positions, and the production efficiency is high.

4.The slag and molten pool are prone to mixing, especially when welding flat fillet welds, the slag is easy to advance and form slag inclusions.

It is not easy to distinguish between the slag of acid electrode and the molten pool; Alkaline electrodes are relatively clear; The HG20581 standard clearly states that acid electrodes cannot be used for containers.

5.Improper welding parameters and operation are easy to form defects such as welding nodules, undercuts, and welding deformations.

6.When the backside is free-formed on a single-sided weld, the first weld is prone to the image of uneven welding penetration procedure and poor backside molding.

Flat welding: horizontal welding, horizontal plate welding is generally called flat welding. The welding position with a weld inclination angle of 0° 5° and a weld rotation angle of 85° 95° is called a flat welding position, and the welding carried out at the flat welding position is called a flat welding.

This kind of welding position belongs to the easiest position to weld in the whole welding position.

Vertical welding refers to welding along the joint from top to bottom or from bottom to top. The welding position with a weld inclination angle of 90° (vertical upward) is called the vertical welding position. Welding that is carried out at a vertical welding position is called vertical welding.

The operating procedure of vertical welding is that the current used should not be too large, slightly lower than the fillet welding current, and the size of the electrode should be selected according to the thickness of the weldment. When welding, the arc should not be too large, and the arc should be short. Welding method, take the zigzag or triangular welding method.

If it is a multi-layer welding, the first current should be smaller, and the subsequent welding should be cleaned up to clean up the coating and other sundries to reduce the phenomenon of slag inclusion or impermeable welding.