17. Multi Start Thread
Single start
Lead= 1 x pitch
pitch
Double start
Lead= 2 x pitch
pitch
Lead
Sample:
Thread information: M30x3.0 P=1.0
This thread has 3 starts. We use:
SER 1616 H16 + 16 ER 1.0 ISO BMA
Don‘t forget to change the anvil, if the helix is
different.
starts 3
Lead= 3 x pitch
pitch
Lead
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21. Carbide Grade Selection
BMA (TiALN): Stainless Steel, exotic materials, for middle
and high cutting speed with high temperatue
MXC (TiN): Free cutting untreated alloy steels, stainless steel,
and cast iron (low cutting speed also possible)
Type B with sintered chipbreaker for longer tool life
BLU is a special Carbide grade with a triple
layer coating sub-micronTiAlN for Stainless
steel, Titanium and high temperatur alloys
Nonferrous metal and non metallic materials: K20
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30. Differents between sintered and grinded Inserts
Sintered
Insert from Sandvik Coromant Pitch 0.5 ISO
Grinded
Insert from C.P.T. Pitch 0.5 ISO
Our C.P.T. inserts get a special finish after the coating, so
we can supply an insert with perfect cutting edge fillet.
They are everywhere same sharp for best cutting results.
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