What are the steps of the horizontal welding method?

Hello 1Transverse 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.

Butt cross-welding without beveling, when the plate thickness is 3-5 mm, double-sided welding should be used. The diameter of the electrode is millimeters when the front is welded, and the electrode is 75-80 degrees from the lower plate. When the weldment is thinner.

For the butt horizontal welding of the bevel, the first weld is a thin electrode, and when the gap is large, the linear reciprocating strip method should be used. The second weld adopts the oblique circle transport method.

First, the beginner operation must be mastered:

It can clearly distinguish between molten iron and slag, the shape of the molten pool and the approximate penetration depth.

What size of the electrode is roughly how much current is used, and how to adjust the current on the welding machine.

Wire transport methods and rod angles for welding in various positions.

Second, and then master:

Weldability of workpieces of different materials, welding characteristics and selection of welding rods.

The form and precautions of welding deformation, and the method of correcting after deformation.

Understanding of general welding processes and recognition of welding symbols.

General knowledge of metallic materials.

Third, the higher level should be mastered:

Welding theory, working principle of welding machine and general fault handling.

Compile the general workpiece welding process and steps by yourself.

Master single-sided welding, double-sided forming technology and general welding skills of non-ferrous metals.

1. Butt weld upward welding: when the thickness of the weldment is 4mm, the groove is used, the welding current of the selected welding rod should be moderate, and when the welding thickness is 5mm, multi-layer multi-pass welding should be used.

2. T-joint weld upward welding: single-layer welding should be used when the welding leg is less than 8mm, and multi-layer multi-pass welding should be used when the welding leg is greater than 8mm.

3. When the size of the welding leg is small, the linear or straight reciprocating type is used, and the single-layer welding is completed, and the welding leg size is larger, multi-layer welding or multi-layer multi-channel welding and transportation strip can be used, and the first layer should be used linear transportation strip, and the remaining layers can be selected with oblique triangle or oblique ring transportation method.

The welding master teaches you the horizontal welding technique, which is too practical, have you learned it?

The appropriate current is dispatched according to the workpiece.

It is generally a crescent-shaped carrier.

The technique is good, and you can Z-type transport strips.

Vertical welding requires basic skills, take your time, don't be too impatient.

If you know how to weld, still ask! The welding techniques are different, pull welding, drawing circles are flat welding, pulling welding from the bottom to the top, painting crescent moon is vertical welding, pull welding, painting oblique one is yang welding! Spot welding is the most practical method of welding! See how your technique goes!

Summary. 1.1) Welding rods with smaller diameters should be selected (10% 15% smaller than flat butt welding) when welding, so that the molten pool is small in size, cooling and solidifying quickly, which can reduce and prevent molten metal from flowing down.

2) Short arc welding is adopted, and the arc length is not greater than the diameter of the welding rod. The arc blowing force is used to support the melt pool, while the short arc operation is conducive to the transition of the molten droplets. 3) The working angle of the electrode is 90°, and the forward tilt angle is 10° 30°, that is, the electrode is inclined in the opposite direction of the welding direction.

In this way, the arc blowing force creates an upward thrust on the melt pool, preventing the molten metal from flowing down. 4) In order to facilitate the operation of the right hand and observe the weld pool, the welder's body should not be facing the weld, but slightly to the left.

1.1) Welding rods with smaller diameters should be selected (10% 15% smaller than flat butt welding) when welding, so that the molten pool is small in size, cooling and solidifying quickly, which can reduce and prevent molten metal from flowing down. 2) Short arc welding is adopted, and the arc length is not greater than the diameter of the welding rod.

The arc blowing force is used to support the melt pool, while the short arc operation is conducive to the transition of the molten droplets. 3) The working angle of the electrode is 90°, and the forward tilt angle is 10° 30°, that is, the electrode is inclined in the opposite direction of the welding direction. In this way, the arc blowing force creates an upward thrust on the melt pool, preventing the molten metal from flowing down.

4) In order to facilitate the operation of the right hand and observe the weld pool, the welder's body should not be facing the weld, but slightly to the left.

2.Downward vertical welding methodThe downward vertical welding method is only suitable for the welding of thin plates and less important structures, because downward vertical welding is easier to fall than upward vertical welding of molten metal and slag, and the weld is prone to defects such as slag inclusion and porosity. The downward vertical welding method is characterized by fast welding speed, shallow penetration depth, narrow penetration width, not easy to burn through, beautiful weld forming, and simple operation, but it requires proficient operation skills.

The key points of its operation are as follows: 1) The welding current should be moderate to ensure good fusion. 2) When welding, make the electrode perpendicular to the surface of the weldment, and use the direct attack method to start the arc.

The transport bar adopts a large forward tilt angle of the welding rod, about 30° 40°, and uses the arc blowing force to support the weld pool and prevent the melt pool from flowing down. 3) The linear transport strip method is used to avoid transverse swing as much as possible, but sometimes it can also be slightly transversely oscillated, which is conducive to good fusion between both sides of the weld and the base metal. The downward vertical welding method is best to use a special electrode for downward vertical welding with a large slag viscosity.

In addition to the use of AC welding power supply, ordinary DC arc welding power supply should be welded by DC reverse connection method.

Dear, hello, I'm glad to answer for you, electric welding vertical welding method A: Use some textual things to describe the professional skills, for me is a little difficult. However, as a welder who has been engaged in welding work for many years, and I don't want to see my peers ask for help, then try to share some of my experience and skills with you, hoping to help colleagues who are exploring on the road of welding.

1. Appropriate welding current. Vertical welding has strict requirements for current, and it is difficult to grasp if the current is large, which can cause the molten iron to fall into a welding nodule. If the current is too small, the molten iron will be difficult to separate, and the welding rod will be adhered to, and defects such as slag inclusion will be formed.

Choosing the appropriate welding current according to the wall thickness is the premise of vertical welding. Second, the choice of welding rod. Small diameter electrodes should be selected for vertical welding, which is easy to operate.

According to the wall thickness and groove size, the small diameter electrode can be used first, for example, if you can use a straight warp, you will not use it, and you will not choose what you can use. The properties of the welding rod must be distinguished, the positive and negative electrodes of the welding machine corresponding to the acidic and alkaline electrodes are different, and the alkaline needs to be welded with DC cathode. Although acidity is not sensitive to properties, the positive electrode is better than the negative electrode welding.

The electrode must be dried and then welded before welding, which has a great impact on the welding quality! 3. Welding rod angle. The angle of the electrode for vertical welding is required to be between 60 and 80 degrees.

The angle mentioned here is the angle between the welding direction of the electrode and the base metal. Vertical welding is not easy to master, and molten iron is easy to fall. If the angle is too small, it is easy to deviate the arc, the coating protection is incomplete, and the welding rod is sticked.

Fourth, the method of transporting the welding rod. 1.Zigzag weld can be used straight transport strip method, and the welding rod swings slightly.

It can also be welded by arc picking or continuous uniform arc extinguishing method. The first layer of welding can be welded by arc picking or uniform arc extinguishing method, which is convenient for controlling the molten iron, flattening the weld bead, and convenient for cleaning the slag. The second or filling layer can only be welded with crescent type, zigzag type, and triangular type.

It can meet the requirements of rapid expansion of welding meat. 3.The cover layer can be welded with a crescent moon if there is a surplus of height.

There are no requirements, only the above methods can be satisfied. To sum up, if you want to weld vertical welding, the selection of welding rods, welding angles, strip transportation methods, and the stability of welders' handles are determined by many factors. There is also only through a lot of practice to slowly grasp the trick, the so-called practice makes perfect, that is what it means.

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