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How to weld water pipe by electric welding

How to weld water pipe by electric welding

The normal operation and durability of steel tubes depends on how tight and tight the connections are. They need to withstand high pressures, be resistant to aggressive substances in the water, and be easy to install. It can be secured by welding the water pipe by electric welding. What this work represents, and how to make it yourself, this article will tell.
Types of welding operations

At the core of the welding process are: The metal is heated to melt and deform. At this time, mutual penetration of metal molecules occurs between the edges of the two bonded products. New bonds formed in this way contribute to the strength of the joints.

Welding is possible according to working method.


    Heat. Component bonding is performed using a melting method (electric arc, laser, etc.).
    Thermal machinery. Welded seams are made of self-controlled arc (butt joint).
    machine. The structure is connected by friction or explosion.

Arc, gas, laser or plasma Whether or not a weld is involved, there are several factors involved in the heating of metals that affect the characteristics of the weld.

Parts can be joined manually, mechanically or automatically. The company's manual workforce is 20-30% or more, and its share increases rapidly when heating and watering are installed in residential buildings.
Characteristics of water pipe welding

At home, electrode welding is used, and simplicity and accessibility are attractive. With this connection method, it is not necessary to have a pipe. Here the energy source is the electric arc carried by the electrode.

Home electric welders feature low power and moderate size. Single-phase wiring is sufficient for connection. This includes:

    Welding transformer. It works by converting the alternating current of the network into the direct current of the welding process. The main disadvantages of easy-to-handle devices are related to incomplete arc stability.
    Straight you. Improves arc stability.
    inverter. This unit contains a lightweight inverter module that converts AC to DC, resulting in qualitative weld seams.

Electrodes used for electrical welding melt and non-melt.

The first step in the welding process is to supply the materials necessary to form the joint. Beginners are advised to use a solid coated electrode with a melt coating.

On the note! The method of welding, the type of welder used and the diameter of the electrode are affected by the characteristics of the pipeline, the composition of the material, the wall thickness, and the diameter of the pipe.

Use a 3 mm diameter electrode when installing the trunk pipeline. They weld products up to 5 mm wall thickness. When the thickness of the part is thicker or multi-layer seams are formed, the diameter of the electrode increases to 4-5 mm.

Weld seam is called according to the welding location and execution method.

    Low-performing;
    It is made along the horizontal-perimeter.
    Vertical - tube welded;
    Ceiling - Requires professional performance skills.

The nature of the seam depends on the location of the element to be joined. Sometimes it is imposed several times. For example, if the pipe thickness is 6 mm, two seams are created.

Now we question how to weld water pipes by electric welding.
Electric welding step

At first, clean the pipe (paying particular attention to the inner surface). If the edges are uneven, the ends are cut off and the metal is polished to a width of 1 cm or more from the inside and outside.

caution! The edges or thick walls of large diameter pipes must be heated to at least 0.75 cm wide. Therefore, quenching structure appears.

The welding procedure is as follows.

    Place the electrode in the device holder and then click on the metal shaft to activate the current supply. Its strength depends on the wall thickness of the structure.
    If an arc appears, place the electrode 3 to 5 mm away from the joint. The optimum tilt angle to the working surface of the rod is 70 degrees.
    Apply seams instead of smooth movements to create vibration and distribute metal through both joints. The trajectory of movement may be crescent-shaped, zigzag-shaped, or different. As a result, a narrow dense roller appears at the intersection.
    When the joint has cooled down, knock the slag with a hammer. If the wall is thick, create a second and third seam. However, do not forget to remove the slag whenever you have a new layer.
    If the pipe thickness is 8 mm or more, cook the first seam in two steps. To do this, divide the circle into sections and weld them one by one, and connect the remaining pieces in the second step. After all, make a solid seam along the entire circumference.

Steel Pipe Weld Video Command

Because of the danger, the welding operation is performed according to the safety regulations. If you are afraid of working with fire, learn to hit the water pipe without welding. If you want, you can get water at home without help. Let's do our best!
Welded pipe welding by electric welding
How to weld water pipe by electric welding

The normal operation and durability of steel tubes depends on how tight and tight the connections are. They need to withstand high pressures, be resistant to aggressive substances in the water, and be easy to install. It can be secured by welding the water pipe by electric welding. What this work represents, and how to make it yourself, this article will tell.
Types of welding operations

At the core of the welding process are: The metal is heated to melt and deform. At this time, mutual penetration of metal molecules occurs between the edges of the two bonded products. New bonds formed in this way contribute to the strength of the joints.

Welding is possible according to working method.

    Heat. Component bonding is performed using a melting method (electric arc, laser, etc.).
    Thermal machinery. Welded seams are made of self-controlled arc (butt joint).
    machine. The structure is connected by friction or explosion.

Arc, gas, laser or plasma Whether or not a weld is involved, there are several factors involved in the heating of metals that affect the characteristics of the weld.

Parts can be joined manually, mechanically or automatically. The company's manual workforce is 20-30% or more, and its share increases rapidly when heating and watering are installed in residential buildings.

The reliability of the pipeline depends on the quality of the connection.
Characteristics of water pipe welding

At home, electrode welding is used, and simplicity and accessibility are attractive. With this connection method, it is not necessary to have a pipe. Here the energy source is the electric arc carried by the electrode.

Home electric welders feature low power and moderate size. Single-phase wiring is sufficient for connection. This includes:

    Welding transformer. It works by converting the alternating current of the network into the direct current of the welding process. The main disadvantages of easy-to-handle devices are related to incomplete arc stability.
    Straight you. Improves arc stability.
    inverter. This unit contains a lightweight inverter module that converts AC to DC, resulting in qualitative weld seams.

Electrodes used for electrical welding melt and non-melt.

The first step in the welding process is to supply the materials necessary to form the joint. Beginners are advised to use a solid coated electrode with a melt coating.

On the note! The method of welding, the type of welder used and the diameter of the electrode are affected by the characteristics of the pipeline, the composition of the material, the wall thickness, and the diameter of the pipe.

Electrical welding pipe in the most inaccessible place

Use a 3 mm diameter electrode when installing the trunk pipeline. They weld products up to 5 mm wall thickness. When the thickness of the part is thicker or multi-layer seams are formed, the diameter of the electrode increases to 4-5 mm.

Weld seam is called according to the welding location and execution method.

    Low-performing;
    It is made along the horizontal-perimeter.
    Vertical - tube welded;
    Ceiling - Requires professional performance skills.

The nature of the seam depends on the location of the element to be joined. Sometimes it is imposed several times. For example, if the pipe thickness is 6 mm, two seams are created.

Now we question how to weld water pipes by electric welding.

The choice of welder and welding method depends on the material of the pipeline.
Electric welding step

At first, clean the pipe (paying particular attention to the inner surface). If the edges are uneven, the ends are cut off and the metal is polished to a width of 1 cm or more from the inside and outside.

caution! The edges or thick walls of large diameter pipes must be heated to at least 0.75 cm wide. Therefore, quenching structure appears.

Do not forget safety during electrode welding.

The welding procedure is as follows.

    Place the electrode in the device holder and then click on the metal shaft to activate the current supply. Its strength depends on the wall thickness of the structure.
    If an arc appears, place the electrode 3 to 5 mm away from the joint. The optimum tilt angle to the working surface of the rod is 70 degrees.
    Apply seams instead of smooth movements to create vibration and distribute metal through both joints. The trajectory of movement may be crescent-shaped, zigzag-shaped, or different. As a result, a narrow dense roller appears at the intersection.
    When the joint has cooled down, knock the slag with a hammer. If the wall is thick, create a second and third seam. However, do not forget to remove the slag whenever you have a new layer.

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