Hole Finishing Application Example Heat Exchanger • Tube Sheets
TRM – TOP REAM MODULAR
• Tube holes Ø 25,25mm(. 994 ").
• Tolerance range 100 μm.
• Alloy steel, long-chipping.
• Machining center with internal coolant.
CHALLENGE
• Six cutting edges.
• Coated cermet.
• Standard 5 x D body clamped into hydraulic chuck.
• vc = 90 m / min( 295 SFM).
• f = 0,48 mm / rev(. 019 IPR).
SOLUTION
CUTTING DATA
• After more than 30 minutes only minor wear visible.
RESULT
• Reduction of machining time in total to less than 60 minutes per plate with 180 holes.
• Predictable tool life as only 2 μm diameter deviation after 30 minutes tool life.
BENEFIT
W78
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