Welding with Coated Electrodes at Melman Lastechniek
Coated electrode welding, also known as BMBE (Shielded Metal Arc Welding), MMA (Manual Metal Arc), or SMAW (Shielded Metal Arc Welding), is a versatile and widely used welding technique, especially in the repair industry. Due to the variety of available electrodes, this method is suitable for various types of steel, including stainless steel, low and high alloy steel, and cast iron.
The Welding Process
In coated electrode welding, an electric arc is created between a coated melting welding electrode and the workpiece using a power source. This arc generates heat, causing both the electrode and a part of the workpiece to melt. The welding electrode consists of a metal core wire and a protective coating. The core wire conducts the current and serves as filler material. During welding, the core wire melts, and the coating forms a protective slag that can be removed after welding.
The coating of the electrode contains elements that contribute to the mechanical properties of the weld. By moving the electrode with a short striking motion over the workpiece and then retracting it a few millimeters, the arc is created.
Required Welding Equipment
For coated electrode welding, you need the following equipment:
- A power source
- A welding cable with an electrode holder
- A ground cable with a ground clamp
- Welding electrodes
- A welding helmet or mask
- A chipping hammer and a steel brush
- Welding Electrodes
Welding electrodes
Welding electrodes are available in various types and sizes, with diameters ranging from 1.6 mm to 6.3 mm. The molten metal should match the properties of the base metal as closely as possible. The composition of the coating is crucial for the quality of the weld seam. The most commonly used electrodes are:
- Rutile electrodes
- Basic electrodes
- Cellulose electrodes
Discover the Power of Melman Lastechniek
At Melman Lastechniek, craftsmanship and innovation are at the core of our operations. Our experienced welders use the latest techniques and equipment to ensure the success of every welding project. Whether it’s repairs or new constructions, we always deliver top quality. Contact us today to find out how we can optimize your welding projects.