Техническая информация Sumitomo - страница 20

High Speed Machining of Cast Iron withs SUMIBORON

• Advantages of Using SUMIBORON for Cast Iron Machining
• Higher Accuracy
• Longer Tool Life at Higher Cutting Speeds Grey Cast Iron Ductile Cast Iron

BNS800 500

0.4 0.8 1.6 3.2 1 10 20 1 10

Good ← Surface Roughness Ra (μm) Tool Life Ratio Tool Life Ratio

• Turning Cast Iron Structure and Wear Shape Examples

0.4 Work : FC250 Continuous cutting 10

2.5 5 7.5 10 12.5 200 400

Matrix Pearlite Pearlite + Ferrite Cutting Length (km) Cutting Speed v (m/min)

C

Wet Machine : N/C lathe Wet Dry

f =0.1mm/rev ap=0.1mm Crater wear Wet

(v = 200 to 500m/min) For machining cast iron with SUMIBORON, cutting speeds (vc ) should be c 200m/min and above. WET cutting is recommended.

• Milling SUMIBORON BN Finish Mill EASY

・High speed machining v =2,000m/min

• c

Surface Roughness 3.2Rz (1.0Ra)

• Running cost is reduced because of economical insert.
• Easy insert setting with the aid of a setting gauge.
• Employs safe, anti-centrifugal force construction for high-speed conditions.

0.25 250

Thermal cracks occur. 0.05 50 vc=1,500m/min Wet

0.0 0

Dry cutting is recommended for high speed milling of cast iron with SUMIBORON. (Conditions) ・Work: FC250・Condition: a =0.5mm f =0.1mm/t Dry p z

・Tool material: BN7000