Standard Drilling Catalogue - Awartech
Standard Drilling Catalogue - Awartech
Standard Drilling Catalogue - Awartech
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Technical Section<br />
®<br />
Cause<br />
External coolant-Low<br />
pressure/volume<br />
Interrupted Cuts<br />
<strong>Drilling</strong> hardened<br />
materials<br />
Poor material microstructure<br />
Poor chip control<br />
Spot drilled holes<br />
High wear resistant<br />
tool grades<br />
11,12,13,19 12,18,19,20 2,23<br />
2,15,16,17,4,9 9,20,21,22,23 2,23 9,26<br />
11,12,13 12,18,19,20<br />
11,12,13 12,13,18,19,20 9,20,21,23<br />
2,4,15,16,17 2,23<br />
11,12,13,14 12,14,19,24,25<br />
2,9,15,16,17<br />
9,11,12,13,14 2,4,15,16,17 12,18,19,20 9,20,21,23 12,19,24,25 9,26<br />
2,15,16,17 12,19,24,25<br />
11,12,13,19,20 12,18,19,20 9,20,21,23<br />
2,4,15,16,17,27 9,20,21,23 12,19,24,25 2,23,27<br />
2,4,15,16,17,27<br />
2,4,15,16,17<br />
9,20,21,23 2,23<br />
11,12,13,14 2,15,16,17 12,19,24,25,27<br />
11,12,13,14 2,15,16,17 12,19,24,25<br />
11,12,13,14,19,20 2,15,16,17 12,18,19,20 9,20,21,23 12,14,19,24,25 2,23<br />
11,12,13,14 12,19,24,25<br />
11,12,13,18,20 12,18,19,20<br />
15. Pre-mill or spot face entry or exit to remove interruption.<br />
16. Decrease feed up to 50% through entry or exit interruption using Nyloc screws to<br />
retain insert.<br />
17. Use short holders in low impact entry cuts.<br />
18. Reduce speed if a step or burn diameter is worn on insert. Calculate the speed at worn<br />
diameter, reduce this velocity by 10% and apply to original tool diameter.<br />
19. Improve quality and condition of coolant (water soluble preferred at 7-8% dilution with EP additive).<br />
20. Use more heat and wear resistant tool grade. If using CPM-M4 use Super Cobalt. If using<br />
Super Cobalt, use Premium Cobalt. If using Premium Cobalt, use Carbide (if micro structure<br />
problems present). Use most wear resistant coating.-TiCN/TiAlN/AM200 TM .<br />
21. Anneal or normalise parts if all cutting tools exhibiting poor tool life.<br />
22. For hard spots, use tougher grade tool steel with high wear resistant coating (i.e If using<br />
Premium Cobalt (PC) use Super Cobalt. If using Super Cobalt, use CPM-M4).<br />
23. Reduce feed, but not below threshold of good chip formation.<br />
24. Increase feed to recommended levels.<br />
25. Contact AMEC or use one of chip enhancement geometries page at front of catalogue.<br />
26. Increase rigidity of set up.<br />
27. Use AMEC's Notch Point Geometry.<br />
81
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