Net prices, valid until 31. 07. ... THE SHARK TOOTH STRUCTURE, PERFECTED BY EVOLUTION, ... substrate â similar to a sh
INNOVATION Net prices, valid until 31. 07. 2017
POWERFUL! Unique cutting tool material inspired by nature – GARANT HB 7010-1 and HB 7020.
With product video on Hoffmann Group TV.
GARANT HB 7010-1 / HB 7020
VIDEO See the inserts in action: www.ho7.eu/hai-en
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GARANT HB 7010-1 / HB 7020
Mother Nature‘s perfect example: Wear resistanc THE SHARK TOOTH STRUCTURE, PERFECTED BY EVOLUTION, PROVIDES INSPIRATION FOR THE DEVELOPMENT OF THE GARANT TURNING GRADES HB 7010-1 AND HB 7020
Shark tooth: The combination of two components turns the shark tooth into a deadly weapon: ɾɾ Extremely tough outer layer of enameloid with Fluorapatite Ca5(PO4)3F protects against wear and tear. ɾɾ Soft dentine with high toughness on the inside of the tooth prevents chipping due to brittle fracture.
Shark tooth: ɾɾ Specially structured enameloid, deviating from the perpendicular, provides a smooth tooth surface. ɾɾ Minimum degree of friction between prey and shark tooth. ɾɾ Minimum loss of dental enamel through abrasion.
OPTIMUM COMBINATION OF HARDNESS AND TOUGHNESS Enameloid Coating
Dentine Substrate
EXTREMELY SMOOTH SURFACE
HB 7010-1 / HB 7020: Two components transform our turning grades into the superlative for machining steel: ɾɾ Wear resistant, thermally resistant outer CVD coating system consisting of Al2O3 and Ti(C,N) with maximum hardness values. ɾɾ Maximum toughness values of the inner carbide substrate prevent chipping and brittle fracture.
HB 7010-1 / HB 7020: ɾɾ Optimised surface finish of the Al2O3 coating layer. ɾɾ Minimum degree of friction between workpiece and cutting material. ɾɾ Minimum abrasion and generation of heat due to the chip sliding off the cutting insert surface.
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e to the power of 4
Shark tooth: ɾɾ The extreme hardness of the shark tooth is due to grain sizes of only a few µm. ɾɾ Wear resitance due to evenly aligned crystals of the enameloid.
Shark tooth: ɾɾ Smooth transition between enameloid and dentine with the best possible adhesion properties due to (smooth) gradients. ɾɾ Organic proportion increases towards dentine-enameloid interface. ɾɾ Both components are solidly interlinked.
ALIGNED NANO-CRYSTALS
ROBUST GRADIENT MATERIAL
HB 7010-1 / HB 7020: ɾɾ Maximum hardness of the Ti(C,N) coating due to grain sizes in the nano-range. ɾɾ Higher toughness due to aligned crystal structure.
HB 7010-1 / HB 7020: ɾɾ TiN proportion of the substrate is not, as previously, evenly distributed but tapers off. ɾɾ Increased TiN proportion at the edges of the carbide substrate for optimum adhesion between substrate and coating. ɾɾ No shearing of the coating due to adapted thermal expansion coefficient of the substrate (TiN coating to TiN proportion of the substrate).
INNOVATION
Robust, sharp-edged and uniquely good! THE NEW GARANT TURNING GRADES HB 7010-1 & HB 7020 WERE INSPIRED BY NATURE'S PERFECT EXAMPLE – A SHARK TOOTH
With properties like a shark tooth perfected by evolution, the new GARANT turning grades HB 7010-1 and HB 7020 gave an impressive performance when machining steel during comparative tests. The multilayer coating system of the GARANT insert makes it possible to achieve highest cutting data and maximum reliability due to a tailor-made, innovative gradient carbide substrate – similar to a shark tooth – with a hard exterior and an elastic core.
ALIGNED NANO CRYSTALS OPTIMUM COMBINATION OF HARDNESS AND TOUGHNESS ROBUST GRADIENT MATERIAL EXTREMELY SMOOTH SURFACE
GARANT HB 7010-1 / HB 7020
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GARANT turning grades HB 7010-1 and HB 7020 HB 7010-1 Always in the fast lane
ɾɾ Highest cutting speed. ɾɾ For continuous cut.
HB 7020 Meets every challenge
ɾɾ Maximum universality. ɾɾ For challenging operating conditions.
The right substrate for all cutting conditions. An overview of our GARANT steel turning grades.
VC
HB 7010-1
HB 7020
HB 7035
Smooth cut
6
Irregular cut
Interrupted cut
INNOVATION
Insert shape and size
Negative inserts
Chip breaker
Properties:
SS SM SG SR
Use for challenging cutting conditions High stability at the cutting edge
Finishing Medium machining Roughing Heavy machining
Depth of cut ap
QUICKLY AND EASILY FIND THE CORRECT INSERT SHAPE AND SIZE FOR EVERY APPLICATION.
Feed f [mm/U]
Insert shape
Size 0.2
Resistance to plastic deformation and resistance in interrupted cut increases
strong cutting edge high cutting force
weak cutting edge low cutting force
S
SN.. 19 SN.. 15 SN.. 12
C
CN.. 19 CN.. 16 CN.. 12 CN.. 09
W
WN.. 08 WN.. 06
T
TN.. 16
K
KN.. 16
D
DN.. 15 DN.. 11
V
VN.. 16
0.3
0.5
Positive inserts
Chip breaker
Properties:
SS SM
1
Depth of cut ap for chip breaker SS-SR 1.5 2 2.5 3 3.5 4 4.5 5
Finishing Medium machining
5.5
6
7
8
9
Depth of cut ap
Choice
Low cutting forces Better surface finish Feed f [mm/U]
Choice
Insert shape
Size 0.2
Resistance to plastic deformation and resistance in interrupted cut increases
strong cutting edge high cutting force
weak cutting edge low cutting force
S
SC.. 12 SN.. 15
C
CC.. 12 CC.. 09 CC.. 06
T
TC.. 16 TC.. 11
D
DC.. 11 DC.. 07
V
VB.. 16 VB.. 11 VC.. 16 VC.. 11
0.3
0.5
1
Depth of cut ap for chip breaker SS-SM 1.5 2 2.5 3 3.5 4 4.5 5
5.5
6
7
8
9
7
GARANT HB 7010-1 / HB 7020
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Wear optimisation Optimisation using wear pattern Analyse your process using the wear pattern and, if necessary, determine measures for optimisation.
Recommended action: - Reduce cutting speed. Or choose harder substrate.
Recommended action: - Reduce feed. - Reduce cutting speed . Or choose harder substrate.
✘
✘ Ductile deformation occurs in particular due to thermal overload of the cutting edge. Substrate
Cutting speed vc [m/min.]
Crater wear refers to a hollowed-out removal of tool material on the tool cutting edge (diffusion and abrasion).
Tough
+
✔ Flank wear as an indication of ideal machining conditions.
-
Built-up edges occur due to workpiece material forming an agglomeration on the cutting edge. Reasons: workpiece material welded to the cutting edge and sticky material.
✘
Recommended action: + Increase feed. + Increase cutting speed. Or chose a more positive geometry.
Recommended action: - Reduce feed. + Increase cutting speed. Splintering results from instability or Or choose tougher material adhesion. Flaking at the cutting substrate. edge could be a result of vibrations on the workpiece or spindle.
Hard
✘
+
Feed f [mm/U]
Optimisation using chip pattern The respective chip shape reveals whether the chosen technology values and the shape of the chip breaker are ideally matched to the process.
Roughing
+
Thick, heavy or uneven chip formation. Risk of ductile deformation.
✔ Loosely curled chips as an indication of ideal machining conditions.
✘ -
+ Feed f [mm/U]
8
Recommended action: - Reduce feed. - Reduce depth of cut. Chip breaker → Roughing
Chip breaker
✘
Finishing
Depth of cut ap [mm]
Thin and long chips. Risk of built-up edges. Recommended action: + Increase feed. + Increase depth of cut. Chip breaker → Finishing
INNOVATION
Approximation table surface finish MINIMUM ACHIEVABLE SURFACE ROUGHNESS Rth / Ra DEPENDING ON FEED AND CORNER RADIUS.
Rth
Workpiece
rε
These formula-based values are STARTING value recommendations which can be optimised depending on the machining conditions (material, clamping situation, chip breaker …). Larger corner radii rε permit improved surface quality at the same feed f. However, for larger radii and lower depths of cut (ap) increased passive forces occur (tool or workpiece deflection), which can cause vibrations.
f Tool
Average roughness Ra [µm] 1.5
1.6
2.0
2.4
0.05
1.47
0.75
0.38
0.31
0.2
0.16
0.13
0.11
0.1
0.08
0.07
0.07
2.76
1.41
0.72
0.58
0.37
0.3
0.25
0.2
0.19
0.15
0.13
0.08
3.55
1.81
0.93
0.75
0.47
0.38
0.32
0.26
0.24
0.19
0.16 0.25
0.1
2.76
1.41
1.13
0.72
0.58
0.48
0.39
0.37
0.3
0.12
3.88
1.98
1.6
1.01
0.82
0.68
0.55
0.52
0.42
0.35
0.15
5.9
3.02
2.43
1.54
1.24
1.04
0.84
0.79
0.63
0.53
0.16
6.7
3.41
2.74
1.74
1.4
1.17
0.94
0.89
0.71
0.6
0.18
8.3
4.25
3.42
2.17
1.75
1.46
1.18
1.11
0.89
0.75
0.2
5.2
4.17
2.64
2.13
1.78
1.44
1.35
1.09
0.91
0.22
6.2
4.99
3.16
2.55
2.14
1.72
1.62
1.3
1.09
0.25
7.9
6.3
4.02
3.24
2.72
2.19
2.05
1.65
1.39
0.27
9.1
7.3
4.65
3.74
3.14
2.53
2.37
1.91
1.6
0.3
11.1
8.9
5.7
4.57
3.83
3.08
2.89
2.33
1.95
0.32
13
10.1
6.4
5.2
4.32
3.48
3.27
2.63
2.2
0.35
15
11.9
7.6
6.1
5.1
4.12
3.87
3.11
2.61
0.37
16
13
8.4
6.8
5.7
4.57
4.29
3.46
2.9
0.4
15
9.7
7.8
6.6
5.3
4.97
4
3.35
0.45
19
12.1
9.8
8.2
6.6
6.2
4.99
4.19
15
11.9
10
8
7.6
6.1
5.1
0.55
18
14
12
9.6
9
7.3
6.1
0.6
21
17
14
11.3
10.7
8.6
7.2
0.65
24
20
16
13
12.4
10
8.4
0.7
28
22
19
15
14
11.5
9.6
0.75
32
26
21
17
16
13
10.9
0.5
0.8
29
24
19
18
15
12.3
0.85
32
27
22
21
17
14
0.9
36
30
24
23
18
15
0.95
40
33
27
25
20
17
37
30
28
22
19
42
39
32
26
1.3
49
46
37
31
1.5
56
52
42
35
60
1 1.2
1.6
48
40
1.7
54
45
1.8
61
51
Super-fine finishing ▼▼▼▼
f 1.88 rε0.97
Ra ≈ 43.9
[µm]
Average roughness value Ra rε= Radius indexable insert f= Feed Calculation Rth
Rth ≈ Fine finishing ▼▼▼
125 x f 2 [µm] rε
Roughness Rth rε= Radius indexable insert f= Feed
i
Terms Rmax Rz Ra Rt
Finishing ▼▼
The average surface roughness Rz is the mean value of the individual roughness values in the measurement segments Z1 to Z5. Rmax is the largest individual roughness value within a measurement segment. The roughness Rt is the vertical difference of the deepest groove and the highest peak within the total measuring distance. Z5
1.2
Z4
1.0
Z3
0.8
Rmax
0.5
Z2
0.4
Calculation Ra
Z1
0.2
Surface roughness
Samplinglength lr
Roughing ▼
Note: The stated values are to be understood as guide values and do not replace a Perthometer (stylus instrument) to determine the exact Ra or Rz values.
Measuring distance ln = 5 x lr
RZ =
1 (Z + Z2 + Z3 + Z4 + Z5) 5 1
The average roughness Ra is equal to the arithmetic average of the sums of the y-coordinates of the roughness profile within the sampling length lr. Z
Centre line X
Ra
0.1
rε Radius
Rt
Feed f [mm/ rev]
Measuring distance lr
9
GARANT HB 7010-1 / HB 7020
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Test winner GARANT HB 7010-1 THE IDEAL CUTTING MATERIAL FOR CONTINUOUS CUT Cutting speed vc ISO code: Recommended starting value
