Lasaco electrode welding machines for your project

In addition to the products of our cooperation partner Lorch, our range of electrode welders also includes a variety of very cost-effective solutions from our own brand BlackLine. We also supply the right power source for your needs.

Here you will find our electrode welders

The unbeatable price-performance ratio of our own brand BlackLine rounds off the range for every need.

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Fundamentals of electrode welding

Electrode welding is one of the most common welding processes and is usually the first welding technique that prospective welders encounter during their training. Also known as manual arc welding, stick electrode welding or electric arc welding, the process provides the basics for understanding how welding equipment works and how electrical voltage interacts with the metals being processed.

Arc welding with stick electrodes has several advantages over the more complex MIG/MAG or TIG welding techniques. It can be used flexibly, is independent of additional shielding gases and allows any type of weld seam to be made. In addition, electrode welding can be carried out in almost all weather conditions and in difficult overhead or forced positions with almost all materials. Accordingly, this welding technique is used everywhere in the metal trades and industry, with a focus on steel and pipeline construction.

This is how hand electrode welding works

In electrode welding, the arc is generated by contact between the workpiece and the stick electrode. The electrode and workpiece form two electrical poles between which a short circuit occurs for a short period of time. The current flow feeds the arc, which generates the desired heat of fusion between the workpiece and the electrode. In the process, the core wire together with the electrode coating successively melts away and provides its own protective gas bell.

The amperage is decisive in electrode welding

Manual arc welding is performed with low voltage but high amperage. For this purpose, the welding device must transform the connected mains voltage into a low welding voltage and provide the necessary amperage, which at the same time serves to regulate the current source. To ensure that the joint quality of the welding work meets expectations, the current source must always provide as constant a current intensity as possible. This also applies if the arc length should change during the work. Therefore, current sources for electrode welding technology have a sloping characteristic curve.

Which electrodes are recommended for the different material thicknesses?

Electrode diameter (mm) Material thickness (mm) Amperage (A)
1,6 1-1,5 40-50
2,0 1,5-3 60-80
2,5 2,5-6 75-100
3,2 4-8 95-125
4,0 From 6 120-160
5,0 From 6-8 150-200

Frequently asked questions & answers about electrode welding

  • What materials can be welded with electrodes?

    Almost all materials are suitable for welding with electrodes. The technique is most commonly used in steel and pipeline construction, but it is also used in metal crafts and the processing metal industry.

  • Can stainless steel also be welded with stick electrodes?

    In principle, this is not a problem. Depending on the quality grade of the material, high-quality stainless steel electrodes should be used which are correspondingly resistant.

  • What is the risk of electric shock during electrode welding?

    As with all welding techniques, electrode welding also involves hazards such as smoke or dust development. However, the risk of injury from electricity is present in all welding processes.

  • Can aluminum be welded with electrodes?

    There are some challenges when welding aluminum, as aluminum electrodes get hot much faster compared to steel. They also burn off relatively quickly. Therefore, they are primarily suitable for limited repairs and touch-ups. It is also essential to use an inverter welder. For more extensive aluminum welding work, TIG or MIG welders are more suitable.

  • Can cast iron be welded using electrodes?

    In principle, this is not a problem if the respective type of casting is precisely known. A nickel electrode is used for cold welding of cast steel, malleable cast iron and gray cast iron. It is also suitable for welding castings that show signs of fatigue.

  • What has to be considered during electrode welding?

    One of the most common mistakes in arc welding with stick electrodes is choosing the wrong distance between the workpiece and the electrode. If it is too close to the workpiece, the stick electrode can get stuck. On the other hand, if the distance is too great, the arc may become uneven or spark. This has a correspondingly negative effect on the quality and uniformity of the weld.

How do you find the optimum welding process for your material?

Welding process Material
TIG welding All metals
MAG welding All steels
MIG welding Alloyed steels, non-ferrous metals
Laser welding All steels, light metals, glass
Electrode welding All steels
Resistance welding All metals
Stud welding (tip ignition) Carbon steel, stainless steel, brass
Stud welding (drawn arc) Unalloyed steel, stainless steel

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LASACO's cooperation partners at a glance

Since all customers have their own ideas, wishes and technical requirements for their individual order, we work together with strong partners. This is the only way to provide the required quality and reliability for applications in industry and trade. Here you will find an overview of the renowned manufacturers with whom we cooperate in the field of welding and robot technology as well as other components. Quality is our top priority. Always.