Channel: Applied Science

Category: Science & Technology

Tags: treatmentsteelhigh speed steelhardeningdrillsstrengthcold hardeningliquid nitrogenhsscoldapplied sciencedrillingcryoben krasnowdeep cryogenicm2 steelcryogenic treatmentmachiningcryogenicwear resistancecryo treatment

Description: I bought some HSS stub drills, and treated half of them with liquid nitrogen, which improved their wear resistance dramatically. I also look at the change in microstructure with an electron microscope. Performance of cryogenically treated M35 HSS drills - sci-hub.tw/10.1007/s00170-011-3616-8 Performance of cryogenically treated HSS tools - sci-hub.tw/10.1016/j.wear.2006.01.017 Effects of Cryogenic Treatment on the Strength Properties - sci-hub.tw/10.1088/1757-899X/229/1/012014 LN2 generator video: youtube.com/watch?v=7PWESWqhD8s Heat treatment of steel video: youtube.com/watch?v=ulfCxDsVTWo Source of drill bits: mcmaster.com/catalog/125/2508 Temperature logger (discontinued, unfortunately): adafruit.com/product/3081 3M fine polishing pads: amazon.com/Tri-M-Ite-Polishing-Abrasive-Assorted-Sheets/dp/B07CP9CCH4 Delorean patent on cryogenic torsion bar: patents.google.com/patent/US4378658 Steel grain structure inspection, and overall great channel for material analysis: youtube.com/watch?v=UuHofNW40Yw Steel grain structure video: youtube.com/watch?v=0SIr2sBHxA4 Applied Science on Patreon: patreon.com/AppliedScience