Halnn research new cbn insert grade to help machining cast iron and high speed steel with dry cutting. It can help manufacturers tosave the costs and improve the processing efficiency. If you are instered in our products cbn inserts, you can check our website:www.halnntools.com.Or add my whatsapp:+8618695866134

1. Halnn Superhard Materials Co.,Ltd
www.halnntools.com
New Grade CBN tool material help cast iron dry cutting and high-speed turning
Dry cutting can protect the environment and reduce the costs and consciously reduce or
completely stop using cutting fluid processing methods in machining, enable economic
benefits and social benefits to optimally coordinated development.
At the beginning of the 1990s, dry cutting technology abroad a number of studies, and
apply to the actual production, has achieved a certain degree of social and economic
benefits, dry cutting technology has become a trend in the development of metal-cutting
machining.
In the metal cutting process, the manufacturers often use cutting fluid. The main effect of
cutting fluid is to reduce the cutting temperature, improve friction state and wear state in
machining process, thus it will improve the surface
quality of the work piece, extending cutting tool life.
With the machining industry rising cost of cutting fluids,
as well as environment protection and energy
requirements, dry cutting has been used both in hard
materials cutting and small parts turning process. With
BN-K20 and BN-S30 grades CBN superhard cutting
tools for cast iron dry cutting tool grades entering the
market, dry cutting technology are widely used for
ordinary gray cast iron and pearlite nodular cast iron.
According to statistics, in the total costs of Machinery
manufacturing, cutting fluids accounted for the
proportion of the production costs up to 15%, while the
tool costs account for only 3-5% of production costs. In
the past times, the transition from wet machining to dry
machining costs are high. with the development of tool
materials, it is not a problem.
In fact, dry turning hard materials and high-speed cutting
is not only feasible, but also profitable. The trick is
correctly integrated cutting tools, machine tools and
cutting technology. Where in the improvement cutting tool material is to achieve dry
cutting is the most direct and economical method. Achieve dry cutting biggest technical
challenge is the cutting tool. It is the key factor of dry cutting machining the smooth
conduct. The cutting tool Process, to withstand a lot of pressure, at the same time cutting
the metal to plastic deformation generated, and in condition of no cutting fluid, cutting
tools, the work piece will produce more intense friction between the surface, so cutting
tool cutting edge produces extremely high temperatures and suffers great stress, under
such conditions, the tool will quickly wear or breakage. Develop dry cutting, cutting tool
material to have a high temperature red hardness and chemical stability and low
coefficient of friction.

2. Halnn Superhard Materials Co.,Ltd
www.halnntools.com
In the machinery manufacturing industry, traditional thought is that it must use cutting fluid
to maintain cutting tool life or cutting speed to achieve higher speeds and cutting harder
materials, the traditional understanding of the cutting fluid to obtain a better finish and
longer tool life is essential.
While the reality for many machining cutting fluid is still necessary, but studies have
shown that, with modern cutting tool materials and higher cutting speeds, you do not have
to use cutting fluid, the reason is that: cutting zone temperature becomes very high,
usually exceeding 1000 ℃, especially in high-speed cutting and hard material cutting. For
example, assume that cutting fluid can overcome the centrifugal force generated by
milling cutter high speed rotating. cutting fluids before reaching the cutting zone already
vaporized, almost no cooling effect.
Dry cutting tool material development to ordinary cast iron parts, the most represented
product is Halnn superhard BN-S30 and BN-K20 grades CBN inserts (PCBN cutting tool),
this is Zhengzhou Halnn Superhard Material Co.,Ltd auto parts manufacturing industry
following the "turning instead of grinding" hard turning after a breakthrough technology
makes dry cutting technology application development from a hard material machining to
ordinary cast part machining. Currently, BN-K20 and BN-S30 grade hard cutting tool is
being used to cast iron brake discs, brake drums, gearbox housing, engine block and cast
iron flywheel, pressure plate in high-speed dry cutting; Since the cutting tool material at
1,300 ℃ is normal cutting high temperature red hardness and chemical stability, turning
gray cast iron and pearlite ductile iron parts, cutting speed of up to 500m / min or more,
can also be used for machining center uses the 1000m / min line speed of more
high-speed milling gray cast iron parts. And it has a lower coefficient of friction, not only to
achieve dry cutting, and also processing low surface roughness.
Grey cast iron has been one of the automotive manufacturing industry the main raw
material, it is used to make a variety of parts, including the engine block, cylinder heads,

3. Halnn Superhard Materials Co.,Ltd
www.halnntools.com
differential housing, shafts, flywheels, brake drums and brake discs and so on. Halnn
superhard cutting tool in gray cast iron machining applications is undoubtedly the most
successful, Halnn superhard cutting tool in gray cast iron machining applications is
undoubtedly the most successful, especially in BN-K20 fine finishing inserts and BN-S30
grades machining in gray cast iron in the large-scale use, greatly improved cutting
efficiency, due to give up use of cutting fluid, the development of green dry cutting,
enabling the manufacturing sector, "energy conservation, resource conservation,
minimum pollution, environmentally friendly," the guiding ideology.