The cutting speeds of hard turning bearing steel with Halnn
Category：News
PublishedDate：2017-11-03
Because of the high hardness after quenching, the bearing steel often is difficult to machine.Most cutting tools,such as carbide insert,ceramic cutters and common cbn inserts, all of them can’t achieve good performance. Ceramic insert and common cbn insert can be used for finishing process, but for interrupt turning condition, they will be no idea.
Later, Halnn researched non-metal adhesive solid cbn insert BN-S20 through continuous working on superhard cutting tools, which make it possible for interrupt turning condition and large allowance machining hardened steel.
BN-S20 solid cbn insert not only ensure the advantages of high hardness and good wear resistance of the common cbn insert, but also improve the impact resistance and impact shockness. The following will share the high speed cutting speeds and feeds of machining bearing steel:
|
Machining Materials |
Cutting Speed Vc(m/min) |
Cutting Depth ap(mm) |
Feed Rate Fr(mm) |
Common CBN Grade |
|
Bearing Steel (>HRC45) |
60~250 |
≤1 |
0.05-0.35 |
BN-S20,BN-S200,BN-H11 |
Because the chemical properties will be easily changing after heat treatment. For large scale bearings, the working allowance usually is large, specific for different allowance, we will recommend different cbn grades.
(1)If working Allowance>2mm, we recommend BN-S20, which belong to non-metal adhesive solid cbn insert.
(2) If working allowance<2mm,we recommend BN-S200 and BN-H11, BN-S200 belong to solid cbn insert, both of the 2 cbn grade can be used for finishing process with small allowance, BN-H11 belong to brazing pcbn insert, and the cutting depth need to be controlled within 0.5mm.
Application case on hard turning bearing steel, please feel free to contact with us info@halnntools.com, skype:info@halnntools.com. Whatsapp:+8615617635382, wechat: Halnntools.