Machineing SOO50A CAST STEEL

[Phil f]

relatively new to machineing cast steel. Going by the numbers givin to me it is about 170 -229 HBW. That puts it under the carbon steel category of most of the mitsubishi tools im running.  550 sfm and .05 fpt is whats recomended but im blowing incerts even at .03 doc. Any recomendations would be appreciated.

[crazy^millman]

Start slower and then kick it up. I would come down to 350 SFM and .02 per tooth feed rate. Then start kicking it up from there. A lot factors going to this like the part, the setup, holder and other things we are not able t be aware of. Just because that is what is recommend doesn’t make it useable in all situations. Your job is to gather all the factors and apply your best judgment to make it work.