Каталог Sumitomo сверла и развертки - страница 102

Type (Structural Steel)

MB Type

Ideal for Drilling Rolled Steels for Structural Weldments (single or stacked plates)

X-Type Thinning Application Examples DEX Coating MB Type for Good chip control structural steel Excellent fracture resistance and chip management Exclusive Edge for Structural Steel

Unique wide and smooth flute shape significantly improves chip management and evacuation. New J-grooved Flute

Reduces shoulder chipping caused by flapping work. Robust Substrate & Reinforced Edge Treatment

SM490YB Directs coolant to cutting =87m/min, =0.29mm/rev c edge even during MQL drilling Center Oil Hole Comp. Drill Elongated chips

150° Point Angle

Improved surface finish of flute greatly improves chip evacuation Highly Polished Flute Surface

SM490YB =87m/min, =0.29mm/rev c

■ MB Cutting Distance Comparison

Comp. A 2.5x tool life =46m/min

Competitor's Product A 17m c

J 1 Indexable Head =0.35mm/rev 1.7x to 3x

MB 42m ：

Solid 3.0x tool life =54m/min

Comp. D 1.7x tool life =60m/min

Reamer Competitor's Product D 70m c Huge Potential Savings

4 Indexable Head =0.30mm/rev

MB 120m ：

Brazed Model Coolant MQL

Others ■ Recommended Cutting Conditions MB v : Cutting Speed (m/min) f: Feed Rate (mm/rev) c