Welding technology
Welding is one of the most important and fascinating technologies in metal processing and the basis of modern metal design. No other process joins metals as securely and, when used correctly, offers consistent strength as that of the base material.
In our ELMAG online shop, you will find high-quality gas shielded welders, oxyacetylene welders and electric welders for your needs. They all meet the requirements for professional and high-quality production. In addition to comprehensive product advice, we carry an extensive stock programme for all products and wear parts.
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What are the welding processes?
MIG/MAG welding
Metal inert gas welding, also called MIG (metal inert gas) or MAG (metal active gas) welding, is a widely used welding process with a consumable wire electrode according to ISO 857-1. It is also called MSG (metal inert gas) welding.
In this process, the welding current set on the welding device flows via the welding wire (also called electrode) to the workpiece and forms an arc. The arc melts the base material and the welding wire at the welding point and joins them together. A shielding gas is used to protect the weld from oxidation. The welding wire is fed continuously to ensure a uniform weld.
Advantages:
- Very economical
- High welding speed
- High weld strength
- Low welding distortion
- Suitable for thin sheets
- Low rework
TIG/TIG welding
TIG welding (tungsten inert gas welding), also called TIG welding (tungsten inert gas welding), is a gas welding process with which workpieces can be joined efficiently. The welding current flows to the workpiece via a non-melting tungsten electrode and forms an arc there. The welding point is protected from oxidation by a shielding gas. In TIG welding there is the direct current and the alternating current process. TIG inverter welders allow the use of different welding electrode shapes. This versatile process offers high flexibility and precise results.
Advantages
- Easy handling
- Filler metals only as required
- Very good arc guidance
- Arc spatter-free
- Very low scaling
- Flat, exact weld seams
- No rework
MMA electrode welding
Metal arc welding with consumable electrode according to ISO 857-1, also called manual metal arc welding according to EN ISO 4063, is a widely used process.
In this process, the welding current set by the welder flows over the stick electrode to the workpiece and generates an arc. The arc melts the base material and the electrode at the welding point and joins them together. The electrode coating, which also melts during welding, protects the weld from oxidation. After the molten metal has solidified, the resulting welding slag is removed.
This process enables the welding of metal parts and is used in various fields such as metalworking, construction and repair work.
Advantages
- Very economical
- Easy to transport
- Easy to use outdoors
- Simple, safe handling
- High weld seam strength
Oxyacetylene welding/cutting
Gas fusion welding or cutting processes, also called gas welding or gas cutting according to DIN ISO 857-1, have different functions. In the welding process , appropriate welding inserts are used depending on the size of the weld seam. The weld joint is heated until it melts. To fill the joint and create a welding bead, welding wire is inserted by hand. The gas flame protects the weld sufficiently from oxidation.
In the cutting process , a cutting nozzle is used. The heat released by the cutting jet allows local melting and oxidation of the material. The slag is removed by the cutting jet.
Both the welding and cutting processes play an important role in metalworking, construction and repair.
Advantages:
- Problem-free use on construction sites
- high weld seam strength
- material heating, e.g. for bending
