Supply coke oven gas extractor rotor.

For our ARCELORMITTAL customer, AVIME produced the plans and manufactured a coke gas extractor rotor.

The various stages of the manufacture were:

• Three-dimensional readings on the existing rotor
• Compilation of the manufacturing and machining plans
• Cutting in 2 parts of the wheel from one forged piece
• Electron beam welding (without addition of material)
• Machining of a forged 42CrMo4 steel shaft
• Frettage par chauffe de la roue et refroidissement de l’arbre à l’azote liquide, le serrage obtenu est de plusieurs 1/10è de mm, sans clavetage
• Dynamic balancing on the bench class G0.5 as per the NF E 90 600 standard
• Overspeed test in vacuum chamber, at design rotation speed + 20% = 7,350 rpm
• Balance check after overspeed
• Application as per DIN 28 053 standard for a ceramic + PTFE based anti-corrosion and anti-adherent coating
• Balance check after coating