WGC Grooving and Cut-Off • WGC Plunge feed rates v first choice P Steel K Cast Iron S High-Temp Alloys j alternate choice M Stainless Steel N Non-Ferrous H Hardened Materials Corner Starting Plunge Feed Rates mm/rev Seat Radius Conditions Chip Insert Size Control Description Geometry (SSC) mm mm 0,05 0,10 0,15 0,20 0,25 0,30 0,35 1F 0,2 0,06 2 0,2 0,08 0,2 0,09 3 0,4 0,11 0,4 0,12 4 0,8 0,15 Positive rake 0,4 0,15 -PT angle for lower 5 cutting forces. 0,8 0,16 0,4 0,15 6 0,8 0,18 1,2 0,20 0,8 0,20 8 1,2 0,22 10 1,2 0,24 j v v v v 1F 0,2 0,06 2 0,2 0,08 0,2 0,09 3 0,4 0,11 0,4 0,12 Stable negative 4 0,8 0,15 cutting edge 0,4 0,15 -PN allowing for 5 more aggressive 0,8 0,16 applications. 0,4 0,15 6 0,8 0,18 1,2 0,20 0,8 0,20 8 1,2 0,22 10 1,2 0,24 j j v v Cut-Off Feed Rates Seat Starting Cut-Off Feed Rates mm/rev Insert Size Conditions Geometry Description Geometry (SSC) mm 0,05 0,10 0,15 0,20 0,25 0,30 0,35 0,40 1B 0,06 2 0,07 Positive geom- 3 0,09 -F etry for reduced cutting forces. 4 0,11 5 0,13 v v v v 1B 0,06 2 0,07 Stable cutting 3 0,09 edge for 4 0,11 -M aggressive feed rates. Primarily 5 0,14 in cast iron. 6 0,16 8 0,14 j v 2 0,10 3 0,14 Most stable 4 0,16 -R cutting edge 5 0,19 for steel. 6 0,21 8 0,23 j v NOTE: For cut-off inserts with a lead angle, maximum feed rate should be reduced by up to 40%. Maximum Feed Rate Values I.D. and Face Grooving Material Feed Group Factor For I.D. and face grooving Data above is for P and K material groups. Maximum applications, reduce feed feed rates should be adjusted by multiplying max feed rate M 0.8 N 1.2 rate by 20%. values by following factors for shown material groups. S 0.8 H 0.5 widia.com 158 widia.com