Каталог Sumitomo пластины с кубическим нитридом бора Sumiboron - страница 24

One-use Inserts With Chipbreaker

Break Master FV / LV / SV

Type Type Type

• Characteristics
• SUMIBORON one-use insert with chipbreaker. SV type is perfect for carburised layer removal while FV / LV types are best suited to finishing of hardened steel.
• Breaker included on the CBN edge, chipbreaking effect can be maintained throughout machining process.
• Unique chipbreaker design can be applied to both hardened and non-hardened parts with effective chip control.
• The SV Type lineup includes both the BNC2010 / BNC160 for good wear resistance and the BNC2020 / BNC200 with Coated SUMIBORON, which enables high efficiency machining.
• The FV Type and LV Type lineups include the BNC2010/ BNC160 for good wear resistance, the general-purpose BN2000 with Uncoated SUMIBORON, and the generalpurpose BNC2020/BNC200 with Coated SUMIBORON.
• Application Range

0.7

0.5 SV TypeSV TypeSV Type

0.3 LV TypeLV TypeLV Type 0.1 FV TypeFV TypeFV Type

0 0.1 0.2 0.3

Feed Rate (mm/rev) * For hardened parts (above 50HRC), please use less than 0.5mm depth of cut.

• Application Example

Break Master-SV Type Finishing of Hardened Steel Break Master-FV Type

External Caburized Layer Removal L

Tool life=300pcs Tool life=200pcs BNC200 (no breaker) BNC200 (no breaker)

• No constant stoppages or incorrect part

dimension problems and the chips are small.

• Double the tool life of competitor's CBN
• Improved chip control during boring.

Tool life=300pcs Tool life=200pcs Comp CBN (with breaker) Work Material:SCr420 Carburized Steel (shaft) Work Material: Carburized Steel 60HRC (Automotive Component) Insert: 4NC-CNGG120408N-SV(BNC200) Insert: 2NC-CCGT060204N-FV(BNC200)

Cutting Conditions: =150m/min, =0.15mm/rev, Cutting Conditions: v =80m/min, f=0.08mm/rev,

v f c

c a =0.5mm × 2 passes, Wet a =0.15mm, Wet p p

Tool life=100pcs