2pcs CNGA CNMG120408 CBN CNMG431 CBN Quenching/superhard material processing

Description

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Product Description
Used for
Hardened steel, high hardness
Difficult to process materials
use
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CBN content (%) - Binder type - main purpose
~ 60-TiN-hardened steel
~ 70-TiC-cast iron
~ 70-Al2O3-cast iron
~ 90-AlN-high strength cast iron
~ 80-Co-heat-resistant alloy steel cast iron
Application areas
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Suitable for high-speed and ultra-high-speed machining technology
PCBN tool is most suitable for cast iron, hardened steel and other materials, high-speed machining.
The cutting speed and the cutting distance of the tool can be seen from the cutting of the cast iron and the hardened steel by the PCBN tool. When the cutting speed exceeds a certain limit, the cutting speed is higher and the cutting speed of the PCBN tool is smaller,
Cutting tool life is high, this feature is particularly suitable for modern high-speed machining.
The best tool material for hard machining
The finishing of the hardened parts (hardness HRC55 or higher) is usually done by grinding, but with the development of tool materials and the improvement of the machining accuracy of lathes (especially CNC lathes), the parts are replaced by hard cutting instead of grinding
The final processing has become a new finishing process, this car to the grinding process has the following advantages:
(1) can improve the processing flexibility, breaking the grinding wheel grinding restrictions, by changing the cutting edge and knife way can be processed out of different geometric shapes of the workpiece;
(2) the environmental problems in cutting are becoming more and more serious. The waste liquid and waste produced by grinding are more and more difficult to be treated and cleaned, and it is harmful to human body, and hardening is not necessary to add coolant.
(3) high cutting efficiency, short processing time, equipment investment costs are small, can reduce processing costs;
(4) the removal of the same volume of energy consumed by only 20% of grinding, resulting in less heat cutting, the processing surface is not easy to cause burns and small cracks, easy to maintain the integrity of the surface properties of the workpiece;
(5) the same metal removal rate in the case of hard cutting more energy than grinding grinding.
The tool materials commonly used for hard cutting are ceramic, TiC coated inserts and PCBN tool materials, but PCBN is the best tool material for hard turning under higher speeds (above 1000m / min).
Such as in the automotive gearbox synchronizer sets of fork fork (material for the 20CrMnTi, hardness HRC58 ~ 62) processing using the car after grinding, the efficiency increased more than 4 times the processing cost to reduce the original grinding process 1/3 to 1 /
2.
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