Общий каталог Sumitomo 2018 - 2019 - страница 490

K PM Cast Iron and Sintered Compoment BN7000Uncoated SUMIBORON

Uncoated CBN grade for high-speed finishing of cast iron, powdered metals, and difficult-to-machine materials! General Features Medium-grain CBN sintered to a high density to achieve the

maximum content percentage.

Also delivers superior fracture resistance by increasing the

binding strength between CBN particles. Provides stable, long

tool life for high-speed finishing work with cast iron, powdered

metals, and difficult-to-machine materials.

Acid-treated CBN Sintered Body Structure

BN7000 Competitor's CBN

Holes made by the binder melting from the acid treatment.

Few Holes Many Holes

Characteristics Excellent for high speed finishing of Cast Iron!

- l Good wear and fracture resistance in high speed machining of Grey Cast Iron.

l High efficiency machining of powdered metal

With 4 different types of edge treatment, stable and long tool life can be achieved from

machining of Sintered Alloys of any shape or hardness. l Able to machine any Exotic Metals.

Long tool life can also be achieved for the machining of exotic materials such as Roll, HSS and

Heat-Resistive Alloy etc.

Cutting

1.000 Previous CBN BN7000 able to

No chipping in any of the samples! continue Previous Breakage 500 Breakage CBN

Conventional Tool Breakage Breakage

Cutting data: vc = 500 ~ 2.000 m/min, f = 0,2 mm/rev Insert type: CNGA 120408

d oc = 0,3 mm, Wet Cutting data: vc = 250 m/min, f = 0,1 mm/rev, doc = 0,3 mm, Wet Recommended Edge Treatment Cast Iron Turning LF

Type

0,10 Previous CBN

0,08 BN7000 ”Standard”

( General Purpose ) 0,06 Strong cutting edge 0,04 HS

Type

0,02

Interruption degree Frequent