Name:Ceramic insert, Ceramic Cutting Tools
Key
words: Ceramic; cutting tools;
Introduction: Ceramic grade tools are
typically classified into three general categories: oxide, nitride,
and matrix ceramics.
Oxide ceramics are alumina-based and are
generally used in roughing and finishing applications of the cast and gray
irons. Increasingly, oxide ceramics are being used in dry machining applications
at high speeds. This is due to the advancements within materials science,
including the incorporation of whisker-based materials.
Nitride ceramics exhibit extremely high
fracture toughness and are used for roughing and semi-roughing of cast irons
under harsh conditions, such as when there is considerable starting and
stopping that would typically increase fracturing.
CMCs contain ceramics mixed with other
hard materials like cemented and titanium carbides. They can also contain
reinforcing whiskers and other materials to increase wear resistance and
toughness under hot machining conditions. These are commonly referred to as
SiC-whisker reinforced. Alumina reinforced with SiC whiskers is the toughest
and most resistant to thermal shock of the oxide-based ceramics due to the
extremely high tensile strength of the SiC whiskers. It offers the additional
benefit of being able to be run without coolant, thus making dry machining a
common application while also being able to offer an increase in machining
rates up to 800%.
Applications
of Ceramic insert, Ceramic Cutting Tools
:
Auto
parts processing
A series of parts
such as milling cylinder cover, cylinder sleeve, and automobile brake disc are
processed with composite silicon nitride ceramic blade, which can improve the
efficiency. For example, a milling cutter can increase its speed from 92r/min
to 275r/min.
Bearing machining
The rolling bearing
adopts the technology of rough, fine, quenching, rough grinding, and fine
grinding for a long time. For example, after hardening to 63HRC, the blank of
the GCr15 precision forging bearing will be deformed and uneven and will get
stuck in the rough grinding of the automatic grinding machine directly, and
even burn the spindle of the grinding machine in serious cases. The finishing
process of the bearing ring before quenching and the rough grinding process
after quenching are combined into the finishing process of the ceramic cutter
after quenching, which will make the workpiece fully meet the required size and
geometric accuracy, realize the substitution of grinding by car and greatly
improve the processing efficiency.
Hard cast iron
processing
If the composite
nitride ceramic tool is used to process the cold cast iron roll, the tool life
is increased four times than that of cemented carbide; it can be used to
process superhard nickel alloy spray welding roller bushing, which can greatly
improve the cutting efficiency and speed, save time and cost and improve
economic efficiency.
Other fields
In the fields of
machinery, metallurgy, mining, railway locomotive, aerospace, precision
instruments, molds, etc., the technology can be reformed by using silicon
nitride ceramic cutting tools to greatly improve production efficiency, save
energy and reduce cost.
Bearing machining
Application
Cases of Ceramic insert, Ceramic
Cutting Tools :
Advantages of Ceramic insert, Ceramic
Cutting Tools :
Compared with carbide cutting tools,
silicon nitride ceramic cutting tools have obvious advantages, which are shown
in the following aspects.
● The HRA value of silicon nitride
ceramic cutter is usually 91-93 (HRA is used to represent the hardness index of
soft and hard materials), so it has good wear resistance and can be used to process
high hard materials that are difficult to be processed by traditional tools or
cannot be processed at all, such as various kinds of hardened steel and
hardened cast iron with the processing hardness up to HRC65 (60HRA = 20HRC).
● It can be used for rough and finish
machining of high hardness materials, as well as for high-impact machinings
such as milling, planning, and intermittent cutting.
● The cutting tools made of silicon
nitride ceramics can be cut at high speed to realize the function of “milling
for grinding” for high hard materials, simplify the processing technology and
improve the processing efficiency, so as to save time, electricity, number of
machine tools and plant area and other effects.
● The silicon nitride ceramic blade
has less friction with metal when cutting, which makes it difficult to stick to
the blade and the roughness of the workpiece is low.
● The tool’s durability is several
times or even dozens of times higher than that of traditional tools, which
reduces the number of tool changes during machining, ensures the uniformity of
the workpiece, and also ensures small taper and high accuracy.
● The cutting tool consumes the most
abundant element silicon in the crust as raw material, which can save a lot of
strategic metal materials such as tungsten, cobalt, and titanium.
Pack: Cartons
and bubble wrap
Delivery Time:
Seven to ten days
Sample: No
free samples are provided
FOB Port: Shanghai
Qingdao Guangzhou
