Общий каталог Sumitomo 2018 - 2019 - страница 486

Hardened Steel BNC160

Bearing Steel

High precision machining with surface finishes

down to 1,6 Rz possible thanks to smooth coating!

General

Use the copper coloured Sumiboron grade BNC160 to

improve surface integrity as well as machining accuracy.

The TiCN based smooth surface ceramic coating and the

newly developed Sumiboron substrate enhances edge

strength and wear resistance making high precision machining

with surface finishes as low as 1,6Rz readily achievable.

This new grade is ideal for turning components that previously

relied on precision grinding machines for final machining.

Advantages Excellent surface roughness!

- l

A consistent surface roughness is maintained for hours because wear at the boundary is

so gradual.

l High Precision Machining

High precision work previously ground, can now be turned.

l Enlarged scope of application!

A wider range of hardened steels can be cut using Sumiboron the result being high

productivity on close tolerance machining applications.

Performance

Continuous Cutting Machining Accuracy

0,15 - Offset Offset Offset

0,10 - BNC160 Cutting Length (km) 0,05 - BNC160 Deviation of machined diameter

llll (µm) 0 1 2 3 4 Offset Cutting Length (km) Work material: 15CrMo5 (HRC60) Insert type: CNGA 120408 NC-4

Cutting data: v = 200 m/min, f = 0,1 mm/rev, d = 0,1 mm, Dry Cutting Length (km)

c oc

Continuous Cutting

Recommended cutting Conditions

Surface Roughness -

Conventional coated CBN 1,5 -

0 1 2 3 4 Work material: 15CrMo5 (HRC60) Most suitable for high speed finishing ! Insert type: CNGA 120408 NC-4 Cutting data: vc = 200 m/min, f = 0,1 mm/rev, doc = 0,1 mm, Dry