Steel Welding

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Challenge of Steel Welding

Steel remains the most widespread parent material in metal construction ahead of aluminum and stainless steel.

Its high strength and the low costs make it a popular construction material. Out of all materials, steel is the easiest to weld. The biggest challenge is keeping the material distortion as low as possible. Selecting the correct welding process plays an important part in this.

Interesting Facts About Steel

Steel is primarily composed of iron and a maximum of 2.06% carbon. Alloys with a higher proportion of carbon are known as cast iron. If the proportion of sulfur and phosphorus accompanying iron is less than 0.025%, it is called stainless steel

Not every steel can also be welded: only pure steels, i.e. alloys with a carbon content of less than 0.22%, are suitable for this process. As a rule, the more impure the alloy, the harder it is to weld the steel.

High-strength and super-high-strength steels are particularly important. They are used, for example, in lightweight construction in the automotive industry. They are, however, harder to weld than conventional steel alloys.

Steel exists in a wide range of forms:

  • Flat steel
  • Round steel
  • Profile pipes
  • Square pipes

This Is How to Prepare Steel for Welding

/ Clean
Before welding, remove coarse contamination from the steel in order to achieve good results.

/ Remove rust
Remove rusty areas in the parent material before welding so that no bonding flaws occur in the weld metal.

/ Remove oil or grease
Oily parent material makes the welding process more difficult and may, among other things, cause poor results. You should therefore remove the oil from the steel before welding.

/ Preheat
In the case of higher material thicknesses, you should preheat the component before welding in order to slow down the cooling time. This protects the material and prevents cracking.

Advantages

  • Very high strength
  • Low cost
  • Easy to weld
  • Can be recycled

Disadvantages

  • Susceptible to rust
  • High weight

Welding Process for Steel

In principle, all welding processes are suitable for joining steel. However, the MIG/MAG process is primarily used because this allows for the highest welding speeds.

Applications of Steel

Bridge construction
Automotive suppliers
Pipeline construction
Structural engineering
Yellow Goods

Professional Welding Systems for Steel Welding

Accupocket 150/400
  • Welding independent of the grid thanks to integrated battery
  • Battery, generator and hybrid mode possible
  • Light and robust for harsh operating conditions
Find out more about AccuPocket 150/400
TPS 320i
  • MIG/MAG welding system
  • Integrated data documentation
  • Intuitive touch display
Find out more about TPS 320i
TransSteel 2200
  • Multiprocess system: MIG/MAG, TIG, manual metal arc welding
  • Portable and light for mobile use
  • Intuitive operation and easy menu navigation
Find out more about TransSteel 2200

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