Roller retrofit for a high-pressure grinding mill

Quartz, feldspar, carbonates: in a high-pressure roller mill, the grinding surface suffers severe abrasion under very high stress. BMI handled the regeneration of the rollers, from assessment to reassembly:

  • Wear assessment and analysis of degradation modes, reverse engineering of the rollers
  • Gouging of the old hardfacing down to sound metal
  • Laser rebuilding of the base steel, followed by machining and profiling of the rollers
  • Wear-resistant hardfacing with BMI FCW70 NANO cored wire (chromium, tungsten, niobium, molybdenum and boron alloy, 70 HRC): extreme abrasion resistance under high stress
  • Complete reassembly of the unit

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