CSCase study · Casting
Tuyere cooling rings for blast furnace 6
Client[Client name] ironworks
LocationGhent, BE
CategoryCasting
Duration10 weeks
CompletedNovember 2025
01The brief
Twenty-four cooling rings inside a fixed furnace stop
Blast furnace 6 was coming down for a planned stop, and every tuyere cooling ring had to be on site before the blow-down. There was no slack in the date.
We poured the rings in low-carbon cast steel from the client’s patterns, annealed them in two furnace loads and machined the cooling channels to drawing. Every ring was pressure tested before it was packed.
02What we did
Poured, annealed, machined, tested
- Poured 24 rings in low-carbon cast steel, sampled on the spectrometer before every pour
- Annealed in two furnace loads with calibrated charts for each
- Machined the cooling channels to the customer drawing on 5-axis centres
- Pressure tested every ring and tied its 3.1 certificate to the heat number
10wksFrom order to delivery on site
24ringsDelivered before the stop
100%Passed the pressure test first time
“Every ring arrived tested and numbered, a week before the stop. The furnace came back on schedule.”
LDL. DewulfReliability engineer, ironworks
