2.19
ADDITIONAL CUTTING SETUP EXAMPLES
EXAMPLE # 2
Material
Round Steel Tube SAE 4320 - Hardened to 35 RC (325 Bhn)
Dimensions - 6” O.D. x 4” I.D. (150mm O.D. x 100mm I.D.)
STEP I
Effective Material Width: 4 1/2” (.75 X 6) 114mm (19 x 6)
STEP 2
Feed Force limit setting for 6” Diameter material Refer to Feed Force Limit, Setting in Step 2
STEP 3
Optimum blade pitch (TPI): 3/4 T. P. I.
Actual blade pitch on the saw: 4/6 T. P. I.
STEP 4
Optimum blade speed for 4 1/2” effective 225 ft/min (70 m/min) material width
Blade speed reduced by hardness factor: 225 ft/min X .60 = 135 ft/min
70 m/min x .60 = 42 m/min)
STEP 5
Feed Rate for 3/4 TPI blade: 1.8 in/min (45 mm/min)
Feed Rate for 4/6 TPI blade: 1.8 in/min X .70 = 1.3 in/min
(reduced by finer than optimum blade pitch factor)
(45 mm/min x .70= 31.5 mm/min)
EXAMPLE # 3
Material Bundle -Low carbon steel 2” x 2” Tube with 1/4” wall, 12 piece bundle
(50 mm x 50 mm with 6 mm wall)
Dimensions 6” x 8” (150 mm x 200 mm)
STEP I
Effective Material Width: 5” (.6 X 8”) 120 mm (.6 x 200)
STEP 2
Feed Force limit setting for 8” Diameter material. Refer to Feed Force Limit Setting in Step 2
STEP 3
Optimum blade pitch (TPI): 3/4 T. P. I.
STEP 4
Optimum blade speed for 5 “effective material width - 320 ft/min (100 m/min)
STEP 5
Feed Rate for 3/4 TPI blade: 4.0 in/min (100 mm/min)
