Electro-slag remelting

Electroslag remelting ( ESR abbreviation ) is a metallurgical process for the production of steels of high purity, directionally solidified, and thus error-free structure. In this method, a solid block of steel is immersed in the slag bath of a mold which also acts as an electrical resistor. The block acts as a current-carrying electrode and melts off. As it passes through the slag sulfur and non-metallic inclusions can be absorbed by the slag and deposited later. The steel solidifies the slag in a copper mold.

Produced in this manner steels have improved technological properties:

  • Uniform solidification structure through the entire block length and the whole block cross-section
  • Particularly high tensile strength
  • Very good toughness in the core of large workpieces
  • Steel
  • Urformen
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