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FinlandManufacturing2023 – ongoing

Outokumpu

AI optimization of melting time in electric arc furnaces

Outokumpu says AI cut furnace melting time by 4% and raised furnace capacity by 17%

WorkingCompany's own claimOfficial ↗

Problem

Melting in electric arc furnaces is a main step in stainless steel production. It uses a lot of energy and sets how much steel a furnace can make.

Approach

Outokumpu used machine learning to optimize the melting time in its electric arc furnaces. The company also said it had run AI-based predictive maintenance for a number of years.

Results

4%shorter furnace treatment melting time, per OutokumpuCompany's own claim[1]
17%increase in furnace capacity, per OutokumpuCompany's own claim[1]
1,736 tonsCO2 reduction, per OutokumpuCompany's own claim[1]

Takeaway

Outokumpu reported both a capacity gain and a CO2 cut from the same furnace change. It did not say how it measured them.

Categories

Business function
Production and quality
Innovation type
Process innovation
Evidence
Company's own claim

Sources

Source summaries

[1]Outokumpu2 Nov 2023

An Outokumpu article on AI in stainless steel. It says AI optimization shortened furnace melting time by 4%, raised capacity by 17% and cut CO2 by 1,736 tons. It also mentions predictive maintenance, computer vision and early interest in generative AI.

Full details are in the original sources.

Added 1 Nov 2026 · Updated 1 Nov 2026
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