Техническая информация Sumitomo - страница 21

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Machining Hard-to-cut Materials with SUMIBORON

  • Powder Metal D
  • D

SUMIBORON Carbide Cermet

1. Flank Wear 2. Surface Roughness 3. Height of Burr

D

  • 0.7

0.5 12

0.6DD
10
0.4■D
0.5
8D
0.3D0.4

6 D D

DD0.3
0.2■

D 4 D D D D

D D D 0.2 ■D

0.1 D 2 0.1

  • D D

D D

050100150200050100150200050100150200
Cutting Speed (m/min)Cutting Speed (m/min)Cutting Speed (m/min)
Work: SMF4040 equivalent, Process details: ø80-ø100mm heavyFor general powder metal components, carbide and cermet grades can perform up to v =100m/min. However, around v =120m/min

interrupted facing with grooves and drilled holes. (After 40 passes) c c

SUMIBORON, on the other hand, exhibits stability and superior wear resistance, burr prevention and surface roughness especially at Cutting Conditions: f=0.1mm/rev, ap=0.1mm, Wet 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 wear600600
BN7000
500500BNX20

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)

=0.12 mm/rev=0.06 mm/rev300300
ff
BN7000
200200
BNX20
100Whisker Reinforced Ceramic100
Notch wear Flank Wear
00

0 500 1000 1500 2000 0 1000 2000 3000

  • Influence of tool grade (v =500m/min, f =0.12 mm/rev. L=0.36km)
cCutting Length (m)Cutting Length (m)
BNX20BN7000
Tool life criteriaTool 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 v c=240m/min. (Over f =0.1mm/rev) Conditions: ap= 0.3mm, Wet 0.5mm

  • Ti Based Alloy 0.12 0.12

BN700 Breakage BN700 Breakage 0.20

0.10K10 0.10K10DA150 Breakage
0.15BN7000
0.080.08
0.060.060.10
DA150DA150
0.040.04
0.05
0.020.02
000
0510150510150204060
Cutting Time (min.)Cutting Time (min.)Cutting Time (min.)
Work: Ti–6A–4VWork: Ti–6A–4VWork: Ti–6AI–4V
Insert: NF–DNMX120404Insert: NF–DNMX120404Tool: DNMA150412
Cutting Conditions: vc =100m/min ap =0.1mm f =0.05mm/rev WetCutting Conditions: vc =100m/min ap =0.1mm f =0.05mm/rev WetCutting 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 90308Insert : SNGN090308
Cutting Conditions : vc = 50,300m/minCutting Conditions : vc = 50m/min
f = 0.1mm/revf = 0.1mm/rev
ap = 0.2mmap = 0.2mm
DryDry
N BNS800
BNS800 (=300m/min)Comp.’s solid CBN
c0.10
Whisker reinforced ceramic (c=50m/min)Chipping
0.5
0.08
Cutting is difficultWhisker Reinforced CeramicChippingComp.'s solid CBN
0.4(v =50m/min, After 0.1km of cutting)（After 2km of cutting ）

c because of large wear at 0.06 0.3 =50m/min

c 0.04

0.2

0.1 0.02

Small wear at=300m/minNo chipping
c

Cutting Length (km) BNS800 Cutting Length (km) BNS800

(v =300m/min, After 1km of cutting) （After 2km of cutting） c