In this post, we will be talking about the history of EAF-steelmaking & the almost mystical concept of Ultra High Power Arc Furnaces (or short UHP).
Though the arc furnace came out in the 1900s, the major development has waited its time till the end of the WWII. During the latest decades, the development has escalated and brought revolutionary changes to the steel industry.
While EAFs were widely used in World War II for production of alloy steels, it was only later that electric steelmaking began to expand.
The low capital cost for a mini-mill—around US$140–200 per ton of annual installed capacity, compared with US$1,000 per ton of annual installed capacity for an integrated steel mill—allowed mills to be quickly established in war-ravaged Europe This fact
also allowed them to successfully compete with the big United States steelmakers, such as Bethlehem Steel and U.S. Steel, for low-cost, carbon steel “long products” (structural steel, rod and bar, wire, and fasteners) in the U.S. market.
Need for Ultra-High Power Arc Furnces
Since the concept of the UHP arc furnace(ultrahigh power arc furnace) emerged in the mid-60s, people have tried to build the bigger furnace with higher power and capacity.
The application of advanced technologies like dynamic compensation system and water-cooling system boosts the development vigorously.
There are several essential elements that caused the evolution:
- The increasing quantity of scrap steel;
- The rapid development of the entire steel industry.
Degner, M. et ali, Steel Institute VDeh (2008), Steel Manual, Düsseldorf Verlag Stahleisen GmbH.