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Hardened Steel Machining
Precision Cast Iron Machining
Roll Turning
Grades
Application Examples
Valve Seat Machining
Heat Resistent Alloy Machining

INTEGRATED MACHINING SOLUTIONS


Roll Turning is characterised by difficult machining conditions wherein, cutting is required to be carried out in rolls both fresh & reworked. The requirement of the cutting cutting edge is to retain its sharpness over an extended period. It is also required to retain the toughness of the insert so that there is no failure of the tool on account of turning large roll diameters. Today m/s Sumitomo has developed a wide range of inserts suitable for this application.

Motherson CBN for Roll Turning

BN500 shows better wear resistance for continous finishing of HINEX, High Speed Steel Roll with Small D.O.C and Feed Rate.


Motherson CBN & PCD Grades for Carbide Roll Machining


Cutting Parameters for Roll Turning

Roll Material Hardness
(Hs)
Cutting Conditions
V (m/min[sfm]) f (mm/rev[ipr]) d (mm[inch])
Carbide HRA81-86 5~30[16~98] 0.1~0.3[0.004~0.012] 0.1~0.5[0.004~0.02]
HINEX (High Speed Steel) Over 85 20~50[66~164] 0.1~0.3[0.004~0.012] 0.1~2.5[0.004~0.1]
High Speed Steel 70~85 50~80[164~262] 0.1~0.4[0.004~0.016] 0.1~3.0[0.004~0.12]
Die Steel HRC55-62 60~120[197~394] 0.1~0.3[0.004~0.012] 0.1~0.5[0.004~0.02]
I
R
o
N
Ni Grain Iron 70~85 40~100[131~328] 0.1~0.5[0.004~0.02] 0.2~3.0[0.008~0.012]
High Chromium Iron 70~85 40~100[131~328] 0.1~0.5[0.004~0.02] 0.2~3.0[0.008~0.012]
Chilled Iron 65~85 40~100[131~328] 0.1~0.5[0.004~0.02] 0.2~3.0[0.008~0.012]
Nodular Iron 40~70 50~120[164~394] 0.1~0.5[0.004~0.02] 0.3~3.0[0.012~0.12]
Steel Based Adamite 40~60 50~130[164~426] 0.1~0.5[0.004~0.02] 0.2~3.0[0.008~0.12]
(Turning)