The advantages of Halnn BN-S30 solid CBN inserts, (1) High hardness (2) Good wear resistance and impact toughness (3) Long inserts lifetime (4) Can achieve high speed cutting

1. Halnn BN-S30 CBN inserts process Gray Cast Iron
With the development of machinery manufacturing industry, manufacturer put
forward higher requirements for work-piece quality. Using CNC lathe
processing gray cast iron parts can improve the processing efficiency,
choosing correct inserts material can ensure the quality requirements of gray
cast iron.
At present, there are ceramic insert, carbide inserts and CBN inserts for
processing the gray cast iron.
(1) Carbide inserts, the common use inserts YG6, YG6X, etc, when process
the gray cast iron, the linear speed is higher, the durability is lower, it needs
change frequently inserts, caused low efficiency and high costs.
(2) Ceramic inserts, through the hardness of ceramic inserts is higher carbide
inserts, which brittleness is large, it is easy to collapse when encountered
chapped parts.
(3) CBN inserts, the hardness is second diamond, and owns good wear
resistance. Especially is Halnn BN-S30 CBN inserts, is made of a
non-metallic adhesive, when process the gray iron parts, it improves the
lifetime of cutter.
Halnn super-hard is a famous cbn insert brand in China which include
super-hard insert design, producing, technology and service. Halnn offer
customers insert solutions which can improve processing efficiency in various
manufacturing industry. Halnn cbn insert are widely used in super-hard
materials and high hardness work-piece after heat treating. And Halnn already
covered 90% markets on high speed turning and high hardness product in
China.
The advantages of Halnn BN-S30 solid CBN inserts,
(1) High hardness
(2) Good wear resistance and impact toughness
(3) Long inserts lifetime
(4) Can achieve high speed cutting

2. Halnn BN-S30 solid cbn inserts can be used for brake disc roughing process,
the impact resistance is good, and it has good surface quality and beautiful
appearance and also will help the manufacturer reduce the production costs.
In addition to the BN-S30 grades, the BN-K20 grades and the BN-S300 grades
are also used for processing gray cast iron. BN-K20 belongs to welded CBN
inserts, which is suit for finishing and semi-finishing. BN-S300 and BN-K20 cbn
inserts process gray cast iron, not only can achieve high speed cutting, but
also can improve process efficiency and reduce process costs.
Taking Halnn BN-K20 CBN inserts process gray cast iron parts - brake drum
as case,
Machining Part：Brake Drum Machining Materials:FC250
Workpiece Hardness:HB220~260 Inserts Grade:BN-K20 WNGA080408-6S
Cutting Type: Dry Cutting
Cutting Parameters:
ap=0.3mm,Fr=0.25mm/r,Vc=350m/min
Testing Performance
Inserts Materials Surface Roughness
Linear
Speed(m/min)
Lifetime/edge
（piece/blade）
Halnn BN-K20 Ra1.0 350 120
Coating Inserts Ra2.0 150 70
We can see, the linear speed of Halnn BN-K20 cbn inserts is coating inserts
2.3 times, the lifetime is coating inserts 1.7 times.