Porous tungsten machining under cryogenic conditions

► Application of cryogenic machining on difficult to cut porous sintered tungsten. ► GA based process performances optimization has been performed. ► Cryogenic machining is capable of producing satisfactory unsmeared surface. ► PCD cutting tools are more adept at resisting the harsh interaction with tungsten. ► Observed benefits in surface integrity and product quality of porous tungsten.