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In-service performanceTechnical performance

Weight Total cost of the function

Safety (crash management,

energy absorption, exceptional loads resistance)

y (stifffness)

f e

t

(laser welding, …)

Stage in the life of the product ArcelorMittal contact

Preliminary design BIW experts

Co-engineeringdevelopment

Resident engineerNoble Intl. development engineer

Industrialization Noble Intl. plant project manager

Series production Client Technical Support (CTS)

Identification of applicationPreliminary blank concept

Blank optimizationfeasibility study

Detailed specificationof part

Quality follow-up

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ZD

ZL

ZA

P

Definition

Rounded height

Sheared height

Breaking height

Breaking depth

ZD (%)

ZL (%)

ZA (%)

P (mm)

Parameter measurementCross sectional view

Input data Results

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3

Homogenous welding

-3 -2 -1 0 1 2

500

0

100

200

300

400

Hardness (Hv)

Distance from weld seam

Effect of the dillution of the carbon content

LT = 0,25 LE + 2xLM + L S

Cross sectional view Parameter measurement

LE

LS ZF

LE

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Complex shaped blanks

High tool cost per part,

try to review the design of

the tailor welded blanks

Low volume car

< 50,000 vehicles/year

Simple shaped blanks

Shear blanking

Tool blanking Tool blankingHigh volume car

> 400,000 vehicles/year for increased productivity

UTSE %

Steelgrade A and B

Weld

LongitudinalTransverse

Longitudinal Transverse

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1.0 mm

2.0 mm

1.5 mm

2.0 mm

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0.3170.3300.3440.3570.3710.3840.3970.4110.4240.4380.4510.4650.478

Safety strain

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Major strain

-0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4

Minor strain

Fo

FLC FB450

Safety margin

rming limitTrue values

Weld spot

Simulation with LWB FLC for material A1 and B1LWB FLC allows to predict rupture by stamping simulation

Simulation without LWB FLC for material A1 and B1

Rupture prediction

Part feasibility seams OK

Fracture on real part

0.05

0.00

0.05

0.10

0.15

0.20

0.25

0.30

-0.10 -0.05 -0.00 0.05 0.10 0.15 0.20 0.25

Minor strain

Major strain

0.1

0.0

0.1

0.2

0.3

0.4

0.5

-0.3 -0.2 -0.1 0.0 0.1 0.2 0.3

Minor strain

Major strain

A1 B1

A1 B1

Step 1

Advanced

engineering

Step 2

Vehicle concept

and design

Step 3

Tool development

and prototyping

Step 4

Production

> Innovative solutions

> Development planning

> Introduction of new

steel products and

technologies

> Stamping

> Monitoring of working

groups for the

industrialization

of new solutions

> Parts and process

design support

> Forming and joinin g

assistance:

- Stamping

- Simulation

- Tools design

- Tools optimization

- etc.

> Quality management

> Production assistance

> Cost reduction

5 years + 2-5 years < 18 months Current vehicle

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Materials Cutting Stamping Assembly Logistics

Taken into account in ArcelorMittal Auto cost approach

Engaged material Machines> Depreciation> Maintenance> Consumables (including energy)> Surface area used

Tools> Depreciation> Maintenance

Labour> Operators> Supervisors> Absenteeism rate

Process> Capacity utilization> Speed> Added value loss due to rejects

Machines> Depreciation> Maintenance> Consumables (including energy)> Surface area used

Tools> Depreciation> Maintenance

Labour> Operators> Supervisors> Absenteeism rate

Process> Capacity utilization> Speed> Added value loss due to rejects

Machines> Depreciation> Maintenance> Consumables (including energy)> Surface area used

Tools> Depreciation> Maintenance

Labour> Operators> Supervisors> Absenteeism rate

Process> Capacity utilization> Speed> Added value loss due to rejects

Inventory costs> Surface area> Inventory value> Consignment inventory

Handling> Labour> Packaging> Pallets (delivery and intermediate inventories)

Flow managementcost> References management> Invoicing> Quality control

Rejects

Scrap and rejects

recycling

Matic addition

Scraps

> Including tails of

coils

Volume Cost of capitalTaxes

Specific development cost(engineering studies, prototyping,fine tuning time of tools)

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