Steel Mill Stand

  • Customer problem:

Our customer was facing problems with corrosion between the mating face of the bending blocks and the mill stand windows.

  • Solution:

Rework mill geometry:

  • Recovery of 4 bending areas 1000mm x 800mm
  • Re machine 2 windows areas 1200mm x 415mm
  • Re-machine 2 windows 1200mm x 1300mm
  • Machining of 4 vertical keyways 82H9 x 20mm
  • Machine 4 x horizontal keyways 164H8 x 40mm
  • Drilling and tapping of 40 x M39 holes
  • Extraction of various broken studs
  • Key Site Data:
    • Portable CNC milling machine:
      • Greater material removal due to engine power and stability of the machine. Greater material removal due to motor power and stability of the machine
      • Ability to reach all surfaces with a single machine configuration => One reference take and one machine setup
      • Greater accuracy due to reduced set-up.
    • Material removal: 2 to 5 mm depending on the surface
    • Tolerances
      • Altimetry: +/- 0.1mm Level: +/- 0.1mm
      • Perpendicularity: +/- 0.05mm
      • Parallelism: +/- 0.05mm
    • Surface condition:
    • Machine setup via survey and geometry with the pass line as a reference.
    • Parallel machining of cages and bending blocks

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