各种加工方法能达到的表面粗糙度（Surface roughness achieved by various processing methods）

各种加工方法能达到的表面粗糙度（Surface roughness achieved by various processing methods） 各种加工方法能达到的表面粗糙度(Surface roughness achieved by various processing methods) The surface processing method can achieve the roughness of the.Txt character itself is not good or bad, optimistic and pessimistic both contribute to the world, the former invented the airplane, who invented the parachute. The surface roughness of machining method can achieve ID processing method of surface roughness of Ra (m) One Automatic cutting, sawing or cutting circular saw From 50 to 12.5 Two Cut off (car) From 50 to 12.5 Three Cut off (milling) From 25 to 12.5 Four Cut off (wheel) From 3.2 to 1.6 Five Turning round (rough) From 12.5 to 3.2 Six Turning round (semi finishing metal) From 6.3 to 3.2 Seven Turning round (semi finishing metal) From 3.2 to 1.6 Eight Turning round (metal finishing) From 3.2 to 0.8 Nine Turning round (non metal finishing) From 1.6 to 0.4 Ten Turning round (precision car or car diamond metal) From 0.8 to 0.2 Eleven Turning round (car or car non diamond precision metal) From 0.4 to 0.1 Twelve Turning end (rough) From 12.5 to 6.3 Thirteen Turning end (half pure metal) From 6.3 to 3.2 Fourteen Turning end (semi refined car non metal) From 6.3 to 1.6 Fifteen Turning end (metal finishing) From 6.3 to 1.6 Sixteen (non metal turning end surface finishing From 6.3 to 1.6 Seventeen Turning end (precision metal car) From 0.8 to 0.4 Eighteen Turning end (precision metal car) From 0.8 to 0.2 Nineteen Slot (trip) Twelve point five Twenty Slot (two trips) From 6.3 to 3.2 Twenty-one High speed turning From 0.8 to 0.2 Twenty-two Drill (less than 15mm) From 6.3 to 3.2 Twenty-three Drill (> 15mm) From 25 to 6.3 Twenty-four Reaming, coarse (with skin) From 12.5 to 6.3 Twenty-five Reaming, fine From 6.3 to 1.6 Twenty-six Countersinking chamfering (hole) From 3.2 to 1.6 Twenty-seven Countersink flat with guide From 6.3 to 3.2 Twenty-eight Boring (boring) From 12.5 to 6.3 Twenty-nine Boring (semi boring metal) From 6.3 to 3.2 Thirty Boring (semi fine boring non metal) From 6.3 to 1.6 Thirty-one Boring (precision boring or diamond boring metal) From 0.8 to 0.2 Thirty-two Boring (precision boring or diamond boring non metal) From 0.4 to 0.2 Thirty-three High speed boring From 0.8 to 0.2 Thirty-four Reaming (semi finishing a steel hinge hinge) From 6.3 to 3.2 Thirty-five Reaming (semi finishing a brass hinge hinge) From 6.3 to 1.6 Thirty-six Reaming (semi fine reaming two hinge) cast iron From 3.2 to 0.8 Thirty-seven Reaming (semi fine reaming two hinge) steel, light alloy From 1.6 to 0.8 Thirty-eight The hinge hole (two hinge hinge semi fine brass, bronze) From 0.8 to 0.4 Thirty-nine Reaming (precisfon) steel From 0.8 to 0.2 Forty Reaming (precisfon) light alloy From 0.8 to 0.4 Forty-one Reaming (precisfon) brass, bronze From 0.2 to 0.1 Forty-two The cylindrical milling cutter (coarse) From 12.5 to 3.2 Forty-three The cylindrical milling cutter (fine) From 3.2 to 0.8 Forty-four The cylindrical milling cutter (precision) From 0.8 to 0.4 Forty-five End milling (coarse) From 12.5 to 3.2 Forty-six End milling (fine) From 3.2 to 0.4 Forty-seven End milling (precision) From 0.8 to 0.2 Forty-eight High speed milling (coarse) From 1.6 to 0.8 Forty-nine High speed milling (fine) From 0.4 to 0.2 Fifty Planing (coarse) From 12.5 to 6.3 Fifty-one Planing (fine) From 3.2 to 1.6 Fifty-two Planing (precision) From 0.8 to 0.2 Fifty-three Planing (groove surface) From 6.3 to 3.2 Fifty-four Slotting (rough) From 25 to 12.5 Fifty-five Slotting (fine) From 6.3 to 1.6 Fifty-six Broaching (fine) From 1.6 to 0.4 Fifty-seven Broaching (precision) From 0.2 to 0.1 Fifty-eight Cut (fine) From 0.8 to 0.2 Fifty-nine Broaching (precision) From 0.4 to 0.025 Sixty Cylindrical grinding internal grinding (semi finishing, a processing) From 6.3 to 0.8 Sixty-one Cylindrical grinding internal grinding (fine) From 0.8 to 0.2 Sixty-two Cylindrical grinder, internal grinder (precision) From 0.2 to 0.1 Sixty-three Cylindrical grinder, internal grinder (ultra precision grinding) From 0.050 to 0.025 Sixty-four Cylindrical grinding internal grinding (grinding grinding) < 0.050 Sixty-five The plane grinding (fine) From 0.8 to 0.4 Sixty-six The plane grinding (precision) From 0.2 to 0.05 Sixty-seven Honing (coarse, once processing) From 0.8 to 0.2 Sixty-eight Honing (fine, precision) From 0.2 to 0.025 Sixty-nine (coarse grinding) From 0.4 to 0.2 Seventy Grinding (fine) From 0.2 to 0.025 Seventy-one Grinding (precision) < 0.050 Seventy-two Ultra precision machining (fine) From 0.8 to 0.1 Seventy-three Ultra precision machining (precision) From 0.1 to 0.05 Seventy-four Ultra precision machining (mirror processing, two processing) < 0.025 Seventy-five Polishing (fine) From 0.8 to 0.1 Seventy-six Polishing (precision) From 0.1 to 0.025 Seventy-seven (polishing abrasive polishing) From 0.2 to 0.1 Seventy-eight Polishing (emery cloth polishing) From 1.6 to 0.1 Seventy-nine Polishing (electro polishing) From 1.6 to 0.012 Eighty Thread processing / cutting / die, tap, self opening die head From 3.2 to 0.8 Eighty-one Thread processing / cutting / turning tool or car, milling cutter From 6.3 to 0.8 Eighty-two Thread processing / cutting / grinding From 0.8 to 0.2 Eighty-three Thread processing / cutting / grinding From 0.8 to 0.050 Eighty-four Thread processing / roll / roll die From 1.6 to 0.8 Eighty-five Thread processing / roll / wire rolling die From 1.6 to 0.2 Eighty-six Gear and spline machining / cutting / rough rolling From 3.2 to 1.6 Eighty-seven Gear and spline machining / cutting / roll finishing From 1.6 to 0.8 Eighty-eight Gear and spline machining / cutting / fine interpolation From 1.6 to 0.8 Eighty-nine Gear and spline machining / cutting / finishing From 3.2 to 0.8 Ninety Gear and spline machining / cutting / pull From 3.2 to 1.6 Ninety-one Gear and spline machining / cutting / shaving From 0.8 to 0.2 Ninety-two Gear and spline machining / cutting / grinding From 0.8 to 0.1 Ninety-three Gear and spline machining / cutting / grinding From 0.4 to 0.2 Ninety-four Gear and spline machining / rolling / hot rolling From 0.8 to 0.4 Ninety-five Gear and spline machining / rolling / cold rolling From 0.2 to 0.1 Ninety-six Scrape (coarse) From 3.2 to 0.8 Ninety-seven Scratch (fine) From 0.4 to 0.05 Ninety-eight Rolling processing From 0.4 to 0.05 Ninety-nine Fitter filing From 12.5 to 0.8 One hundred Wheel cleaning From 50 to 6.3