CNC, 3D printing, sheet metal and other processes, professional production of a variety of metal, plastic hand model.

Phone

+86-769-8553-5121

CBN milling cutters and tungsten steel coated milling cutters for the processing of high hardness materials, what is the difference between them?

Oct 13,20

Although cBN milling cutters are not as diverse as tungsten steel coated milling cutters in terms of specifications and sizes, but because of its hardness second only to diamond material characteristics, in the processing life and precision have absolute advantages, so it is usually used in finishing.
Under the most ideal processing conditions, the maximum processing life can reach 10 times of the tungsten steel coated milling cutter.
And tungsten steel coating milling cutter choice is more extensive, from rough machining to finishing can be covered.
These two kinds of milling cutters have their own advantages, partners according to their actual processing needs to choose milling cutter oh!
What are the considerations when using cBN milling cutters
(1) Reduce the amount of tool deflection as much as possible
(2) Control the expansion and contraction of the spindle (fully warm the machine before processing, and process the spindle under the stable state)
(3) Margin management (the importance of Angle clearance machining)
Note: When the tool wear of rough machining and medium machining is too large, the finishing allowance will be uneven.
The caustic processing conditions will affect the service life and machining accuracy of the cutting tools.
So when using cBN contour precision milling cutter for processing, it is very important to keep the allowance of the front project even.
Setting of cutting depth when using two kinds of milling cutters
When using the same size cBN milling cutters and tungsten steel coated milling cutters, the corresponding cutting depth must be set according to the material characteristics.
When the cutting depth is greater than 0.05mm, due to the tool material characteristics of hard and brittle, cBN milling cutter prone to collapse.
And when the cutting depth is less than R0.3, the depth of the two kinds of milling cutter set range is within 0.03mm, at this time according to the actual processing needs, if it is the need for high precision processing effect, the choice of cBN milling cutter to replace the general tungsten steel coating milling cutter can yet be regarded as a processing tip.
Life comparison of cBN and tungsten steel coated milling cutters
The performance of cBN milling cutter plays its advantage of hardness second only to diamond perfectly, even if the continuous processing for 15 hours, still can maintain good surface roughness, and is still in the state of continuous processing.
And tungsten steel coating milling cutter processing after 5 hours, has been unable to reach the very ideal surface roughness, tool wear is more serious.
Here tell you a in order to avoid cBN milling in the process of collapse damage, please choose tungsten steel coating half of the diameter of cBN milling cutter to process.
Suitable cutting tools make CNC machining more cost-effective and time-efficient, so as to get exquisite finished products.