The deep cryogenic treatment of 8% cobalt end mills has made dramatic improvements in two important ways:
1. The number of milling cuts per re-sharpening was increased from 3 cuts before deep cryogenic processing to 78 cuts after processing, an increase of 26 TIMES the wear life.
2. Re-sharpening the end mills after deep cryogenic treatment required only 1/3 the amount of stock removal to restore the tool geometry.
An Industrial Contractor of Phoenix does sub-contract production for the aerospace industry and is constantly challenged by machining exotic Hi-Nickel alloys. This application required milling of Waspaloy AMS-5706. Each pass produced a flat 1 1/8’ by 1 1/4’. The end mills are M-42 Standard 8% Cobalt. A cost analysis shows the cost per part before and after deep cryogenic treatment.
|COSTS||BEFORE TREATMENT||AFTER TREATMENT|
|Tool Replacement Cost||$14.72||$4.91|
|Tool Re-sharpening Cost||$28.00||$4.00|
|Lost Time Cost||$12.00||$0.80|
|Cryogenic Treatment Cost||–||$2.45|
|TOTAL TOOLING COST||$54.72||$12.16|
|TOTAL SAVINGS PER PART||–||$42.56|