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need to achieve surface finishing on the face of the part by turning3/13/18
hi, now I got 1 part need to do process facing on CNC turning machine. The requirement on the face is beautiful and shining turning surface because the face is facing to outside when assembling and it wants to look nice.
the material is stainless steel 316L and I just use normal OD turning tool to cut.
the problem I facing now is the result of the surface cannot constant. sometime it will be ok but sometime it will become poor surface(have ring mark on the surface or surface are no shining).
have anyone faced this problem before or got any idea or experience to solve this problem or have any best way to cut stainless steel??
This is primarily a wood working forum. It is really hard to advise you without knowing the rigidity of your set up, the geometry of the turning tool, and the grade and geometry of the insert used. In general the tooling manufacturer can guide you on recomended sfm and ipr. Speaking in generalities - for a good face finish in any metal on a lathe, you will need to leave apprx .008~.012 in material on to finish, you will want to finish in the X - (X minus direction) and running higher surface footage with lower feed. Typically with 316 stainless you will also want your coolant dilution to be mixed heavier by several % points. Hope this helps!
Beautiful and shining would indicate a secondary abrasive operation to me.