6 7
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Tailgate
Body side inner
Floor panel
Rear door
Front door
Shock tower
Seat crossmember
Front rail
B-pillar
Side member
A-pillarFront fender inner
In-service performanceTechnical performance
Weight Total cost of the function 2
- S
tam
pin
g o
f ta
ilor
w
eld
ed
bla
nks
í
í
í
í
í
í
8 9
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
LWB solutionHinge reinforcement+ =Inner panel
Nesting of tailor welded blankTailor welded blankMonolithic
+
Scrap Scrap
Thickness 0.7 mm
Steel grade
ArcelorMittal 04 HDG
2 blanks / cycle 8 blanks / cycle
Thickness 1.75 mm
Steel grade
ArcelorMittal 04 HDG
Thickness 0.65 mm
Steel grade
ArcelorMittal 04 HDG
Thickness 1.5 mm
Steel grade
ArcelorMittal 04 HDG
Monolithic post assembly solution LWB solution with same technical properties
2 200 1 500 850
600
350
+1 860
1 100
710
1 1
00
+++
10 11
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
12 13
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Transpo rt cost
Le
s
rot
Transportation
costs
Intermediate
inventory decrease
y
y
/y
Cycle time
improvement
Flow management
improvement
Working Capital
improvement
At equivalent technical performance: - cost saving of 5% - weight saving of 1kg/part
Monolithicpost-assembled
solution
∆ Material ∆ Cutting ∆ Stamping ∆ Assembly LWB solution
Total cost index140
0
20
40
60
100
120
80
95
Total cost comparison
1 62b 3 4b2a 4a 5- -
Typical part manufacturing process without tailor welded blanks
Manufacturing process with tailor welded blanks
Cash out Cash out Cash in Cash in
In-lineassembly
Stamping
2a 3 4a 5 1
2b 4b 6
Cutting
Assembly of components
Stamping
N.B.: the much shorter lead time between cash out and cash in which significantly reduces working capital requirements.
∆ WCR ∆ WCR
StampingCutting
In-lineassembly
14 15
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Overlap of approx. 20 mm Butt laser weld line without any overlap
16 17
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Ductile zone
Strong zone
80 mm
300 mm
80 mm
Spot weld
Laser weld
1
2
3
5
4
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
HSSintroduction
LWB linkedwith HSS
LWB linkedwith VHSS
Weight
+ Safety
+ Cost reduction
0
0
1
1 4
2
24
4
148
4
9
MS
HSS
VHSS
UHSS
= 14 TWB14
LWBwith UHSS
18 19
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
20 21
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Fulfill all conventional technical requirements
Dedicated ArcelorMittal Tailored Blanks process required
800700600450800/1000600450<450Level
< 450
450
600
800/1000
600
800/1000
700
800
500
1500
1500
DDQ / HSS<450 Ductibor®TRIPDualphaseMultiphase Usibor®
DDQ /
HSS
<450MPa
Multi
phase
Dual
phase
TRIP
Ductibor®
Usibor®
450
500800/1000
Integration of functions
Material saving by nesting
ol of deformation zones
eased stiffness by continuous welds
Integration of functions
Material saving by nesting
ol of deformation zones
eased stiffness by
continuous welds
A full range of weldable AHSS
LWB
LWB
in AHSS
Material savings
are enhanced when
the price for the
steel is high
Even more functions
can be integrated
ength
and fo rmability
in one part
W eight saving due
to reduced thickness
Improved crash
resistance
Resistance to peak
loads
22 23
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
1600
0
200
400
600
800
1000
1200
1400
UTS (MPa)
6
0
1
2
3
4
5
Conventional
process
1.47/1.47 1.47/1.47ArcelorMittal Tailored Blanks
dedicated process
EI (%)
Usibor® 1500P 1.47mm
+
Usibor® 1500P 1.47mm
UTS (MPa)
EI (%)
24 25
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Body side
Pillars
BumperBeam
Roof reinforcement
Front rails
Rear rails
Door ringTunnel reinforcement
2
2
Usibor® 1500P
T: 1.2mm
Ductibor® 500P
T: 1.5mm
2
2
1
1
40 60 80 100
Weight of
the perimeter
Rear impact
intrusion
Reference
Tailored Blanks proposal
- 38 % in weight
- 4.1 kg / vehicle
No cost penalty
HSS
T: 2.0mmIllustration: courtesy of Volkswagen
SuperLightCar European project
26 27
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
28 29
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Increased stiffness contribution
Lighter finished part
Less visible weldline in finished partNo nesting
losses
Less welddisplacementduring stamping
Tailgate
Wheel house
Body side
Floor panel
Rear door
Front door
Shocktower
B-pillar
Engine cradlecross member
Cross member
Sidemember
Bumperreinforcement
Roof reinforcement
Seat crossmember
Front rail
A-pillarFront fender inner
Tunnel reinforcement
Rear rails
30 31
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
A-pillar upperreinforcement
Front fenderinner
A-pillar lowerreinforcement
Roof rail
Post assembledwindow frame
No nesting losses,efficient welding
32 33
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
ement
A-pillar lowereinforcement
34 35
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
A B
36 37
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
5 parts
37 % engaged material savings
1.0 mm
2.0 mm
1.5 mm
2.0 mm
Weld hidden by wrap-over door
38 39
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
Integration
of tunnel
reinforcements
Integration
of cross member
closing plate
nts
mber
40 41
I -
Tailo
red
Bla
nks
va
lue
pro
po
sal
E
E
E
E
E
Tailgate
Wheel house
Body side
Body
side outer
Front rail
Floor panel
Tunnel
reinforcement
Rear door
Front door
B-pillar
A-pillar
Engine cradlecross member
Crossmember
Sidemember
Bumperreinforcement
Roof reinforcement
Seat crossmember
USIBOR® 1500P/DUCTIBOR® 500P
MULTIPHASE
HSS
DDQ
TRIP
DUAL PHASE
H
D
ExtragalTME
Shocktower
H
H
D
D
D
D
D
D
D D
DD
H
Rear rails
-25 -20 -15 -10 -5 0 +5 +10 +15
TWB parts
Door inner
Body side outer
Tailgate
Rail and side member
B-Pillar
Body side inner
Wheel house
Front fende inner
Bumper beam
Floor panel
Shock tower
Roof reinforcement
Cross members
Fire wall / dash panel
Net weight potential gain on the same functional perimeterCrash resistance contribution
+++
+
+
+++++++++++++++++++++++
++
Weight (%)
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