Cored wire is in demand 3 minutes spent reading
Innovation

Cored wire is in demand

Viktoria Steininger
Holds editorial responsibility for blog topics, is researching and writing articles. Her stories give insights into the world of the voestalpine Group.

Cored wire electrodes, also simply called cored wire, are in high demand around the world as welding consumables in demanding technologies.

Cored wires are small tubes filled with metallic or mineral powders. They are manufactured as wire with the proper diameters in molding or drawing lines. They have higher deposition efficiency than solid wire, which in turn speeds welding tasks.

There are two distinct types of cored wire

voestalpine-fuelldraht-gefalzt1. Folded cored wire = closed cored wire

Advantage: folded cored wire is more efficient.

 

 

 

voestalpine fuelldraht nahtlos2. Seamless cored wire = tube cored wire

Advantage: Seamless cored wire is 100 percent protected from moisture pickup

 

Cutting-edge portfolio

voestalpine Böhler Welding Group offers both folded and seamless cored wire, and in fact possesses the world’s most extensive portfolio of cored wires.

1. Manufacture of folded cored wire

Folded cored wire is manufactured from a strip of non-alloy or high-alloy base material. This strip is rolled into a U shape and continuously filled with the powder mixture suited to its specific use. Rolling equipment is then used to close the U shape into a tube-like wire.

Next the wire is rolled and drawn to its final diameter and wound onto a coil.

  • Strip material
  • Production of a U shape using rolling equipment
  • Continuous filling with metallic or mineral powder mixtures
  • Rolling equipment is used to close the wire to create a tube shape
  • Reduction to the final diameter by means of rolling and drawing
  • Coiling the wire for delivery to the customer

2. Manufacture of seamless cored wire

Seamless cored wire is manufactured from a strip of non-alloy base material. A small tube is formed from this strip and this is then further processed into a closed tube with high-frequency welding. A vibrating table is used to fill the tube with a specified amount of a powder mixture (a chemically bonded mixture of minerals and metals), then it is pre-drawn to a specified diameter and, after heat treatment, to a final diameter to create wire. It is then coated with copper. Finally, the wire is wound onto a coil.

  • Strip material
  • Production of the tube from the strip using high-frequency welding
  • Cleaning the inside of the tube as well as heat treatment in a furnace
  • Production of the powder mixture and filling of the tube using vibration
  • Pre-drawing and heat treatment of the filled tube
  • Drawing to the final dimension and coating with copper
  • Coiling the wire for delivery to the customer

The latest video from the voestalpine image and brand campaign describes the product welding consumables, produced in Italy and shown in the video being sold in Asia and Singapore, the world’s second-most important center for oil and gas after Houston, Texas, in the United States. This spot focuses on welding consumables and therefore makes an important contribution to the energy segment.

More information:

 

Viktoria Steininger