Cast Iron Electrodes

The choice of electrode for welding gray cast iron, in addition to the fact that the welding will be single-pass or multi-pass, requires consideration of the cost and machinability parameters.

  • The ENi-Cl electrode nominally contains 98% nickel. This electrode is considered an expensive electrode due to the high percentage of nickel, but the use of this electrode will create a weld with suitable machining capability. This electrode is used for welding gray and malleable cast iron.
  • The ENiFe-Cl electrode nominally contains 55% nickel. The lower amount of nickel in this electrode makes this electrode more economical than the ENi-Cl electrode. The weld from this electrode is usually machinable, but if the amount of additive is high, the resulting weld may harden and not be suitable for machining. Compared to 98% nickel electrode, this electrode is stronger and ductile and is not very sensitive to the amount of sulfur in the part. Also, this electrode has less melting crack due to its lower thermal expansion coefficient than 98% nickel electrode. This electrode is used for welding gray cast iron with layered and spherical graphite and malleable cast iron. The ENiFe-Cl electrode can also be used to connect GGL and GGG cast iron parts to steel parts.
  • ESt electrode is the cheapest electrode in this category of products. Welding is hard and non-machinable, but grinding can be used as a final operation. The ability to form and stabilize the arc in this electrode is very good and does not require complete surface cleaning for welding. This electrode can also be used for surface operations as a single pass or as an intermediate layer.

 

Applications of Cast Iron Electrodes:

Welding and repair of cast iron parts such as automotive industries (engine body, cylinder head, piston), agricultural equipment, railways, cast iron parts (to eliminate defects caused by casting operations).

 

Pros

  • Welding wire and carbon steel and low alloy branches
  • Do not rust welding wire and steel branches
  • Welding wire and aluminum alloy branches
  • Welding wire and carbon steel and low alloy branches
  • Do not rust welding wire and steel branches
  • Welding wire and aluminum alloy branches

Cons

  1. Welding wire and carbon steel and low alloy branches
  2. Do not rust welding wire and steel branches
  3. Welding wire and aluminum alloy branches
  4. Welding wire and carbon steel and low alloy branches
  5. Do not rust welding wire and steel branches
  6. Welding wire and aluminum alloy branches