Техническая информация Sumitomo - страница 21

Technical Guidance
SUMIBORON Edition Machining Hard-to-cut Materials with SUMIBORON
■ Powder Metal D SUMIBORON ■ Carbide D Cermet
1. Flank Wear 2. Surface Roughness 3. Height of Burr
D
■


Surface Roughness Rz (μm)
0.7
■ 12 ■


Max Height of Burr (mm)
0.5
Flank Wear Width (mm)


10
0.6 D D
0.4 ■ 0.5 D
8 D
0.3 D 0.4
6 D D
D D 0.3
0.2
D 4 D D ■
D D
D D D 0.2 ■ ■
D
0.1 2 D
0.1
■ ■
D
D D
D
0 50 100 150 200 0 50 100 150 200 0 50 100 150 200
Cutting Speed (m/min) Cutting Speed (m/min) Cutting Speed (m/min)
Work: SMF4040 equivalent, Process details: ø80-ø100mm heavy For general powder metal components, carbide and cermet grades can perform up to vc=100m/min. However, around vc=120m/min
interrupted facing with grooves and drilled holes. (After 40 passes)
Cutting Conditions: f=0.1mm/rev, ap=0.1mm, Wet
SUMIBORON, on the other hand, exhibits stability and superior wear resistance, burr prevention and surface roughness especially at
Insert: TNGA160404 high speeds.

■ Heat Resistive Alloy
● Ni Based Alloy
Typical tool damage of CBN tool when cutting Inconel 718
Conditions: f=0.06mm/rev, ap=0.3mm, Wet Conditions: f=0.12mm/rev, ap=0.3mm, Wet
★ Influences of cutting speed (Grade BNX20, f =0.06mm/rev, L=0.72km)
vc =300m/min vc =500m/min
Notch wear 600 600
BN7000


Cutting Speed (m/min)
Cutting Speed (m/min)


500 500 BNX20
Flank Wear Flank Wear Whisker Reinforced Ceramic
400 400
Coated carbide (K series)
★ Influences of feed rate (Grade BNX20, vc=300m/min, L=0.18km)
300 300
f =0.12 mm/rev f =0.06 mm/rev
BN7000
200 BNX20
200
Whisker Reinforced Ceramic 100
100
Notch wear Flank Wear
0 0
0 500 1000 1500 2000 0 1000 2000 3000
★ Influence of tool grade (vc=500m/min, f =0.12 mm/rev. L=0.36km) Cutting Length (m)
Cutting Length (m)
BNX20 BN7000
Tool life criteria Tool life criteria
Notch wear = 0.25mm (○) Notch wear = 0.25mm (○)
Notch wear Flank Wear Or flank wear = 0.25mm Or flank wear = 0.25mm
BNX20 is recommended for high speed and low feed rates BN7000 is recommended for cutting at high feed rates.
BN7000 is recommended for cutting speeds below vc=240m/min. (Over f =0.1mm/rev)
Conditions: ap= 0.3mm, Wet
0.5mm

● Ti Based Alloy
0.12 0.12
Flank Wear Width VB (mm)
Flank Wear Width VB (mm)


BN700 Breakage BN700 Breakage 0.20
Flank Wear Width VB (mm)


0.10 K10 0.10 K10 DA150 Breakage
0.08 0.08 0.15 BN7000
0.06 0.06 0.10
DA150 DA150
0.04 0.04
0.05
0.02 0.02
0 0 0
0 5 10 15 0 5 10 15 0 20 40 60
Cutting Time (min.) Cutting Time (min.) Cutting Time (min.)
Work: Ti–6A–4V Work: Ti–6A–4V Work: Ti–6AI–4V
Insert: NF–DNMX120404 Insert: NF–DNMX120404 Tool: DNMA150412
Cutting Conditions: vc =100m/min ap =0.1mm f =0.05mm/rev Wet Cutting Conditions: vc =100m/min ap =0.1mm f =0.05mm/rev Wet Cutting Conditions: vc =120m/min ap =0.3mm f =0.25mm/rev Wet
☆ SUMIDIA positive type inserts are extremely good for Ti Alloy, ☆ SUMIDIA positive type inserts are extremely good for Ti alloy, ☆ Negative type insert in high fracture resistant BN7000, is suitable for
due to high cutting edge strength and high wear resistance. due to high cutting edge strength and high wear resistance. high-efficiency machining with large depth-of-cut and high feed rates.

■ Hard Facing Alloys
Work: Colmonoy No.6 Work: Stellite SF-20
(NiCr-based self-fluxing alloy) (Co-based self-fluxing alloy)
Insert : SNGN0 90308 Insert : SNGN090308
Cutting Conditions : vc = 50,300m/min Cutting Conditions : vc = 50m/min
f = 0.1mm/rev f = 0.1mm/rev
ap = 0.2mm ap = 0.2mm
Dry Dry
BNS800
BNS800 ( c=300m/min)
0.10
Comp.’s solid CBN
N
Flank Wear Width (mm)


Flank Wear Width (mm)


Whisker reinforced ceramic ( c=50m/min) Chipping
0.5
Technical Guidance /


Whisker Reinforced Ceramic 0.08 Comp.'s solid CBN
Cutting is difficult Chipping
References


0.4 (vc =50m/min, After 0.1km of cutting) （After 2km of cutting）
because of large wear at 0.06
0.3 c=50m/min
0.04
0.2
0.1 0.02
Small wear at c=300m/min No chipping
0 0
0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.5 1.0 1.5 2.0 2.5
BNS800 Cutting Length (km) BNS800
Cutting Length (km) (vc =300m/min, After 1km of cutting) （After 2km of cutting）


N29