Page 132 - Master Catalog 2017, Inch

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WIDIA VariTurn
Steel • Carbon, Alloy, and Tool Steels up to 450 HB (48 HRC)

„ Step 1 • Select the insert geometry
Negative Inserts Positive Inserts

feed rate (mm/rev) feed rate (mm/rev)

2P
1P
Finishing Finishing
depth of cut (in) depth of cut (mm) depth of cut (in) depth of cut (mm)

6P
Roughing

7N feed rate (in/rev) feed rate (in/rev)
Heavy Roughing

„ Step 2 • Select the grade

Negative Insert Geometry Positive Insert Geometry
cutting condition 2P 6P 7N 1P
heavily interrupted cut TN30P TN30P TN30P TN30P
lightly interrupted cut TN20P/TN30P TN20P/TN30P TN20P/TN30P TN20P
varying depth of cut, TN20P/TN30P TN20P/TN30P TN20P/TN30P TN10P
casting, or forging skin
smooth cut, pre-turned surface TN10P TN10P TN10P TN10P

(continued)

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