Provided by Andritz Soutec AG in collaboration with

Lasim S.p.A.

Tailored Welded Blanks

Performance improvementLower emmisionsHigher efficiencySafety

2 TWB basics

Market requirements

A continuous aim for performance has accompanied the development of cars

already from a beginning of the story in automotive.

The performance today is not just given by the strength of a motor, but

involves the body of a car, aerodynamics, comfort, gearbox and motor torque.

Main parameters are still weight of the body in white and motor power.

In today automotive market customers today priorise almost at same level

comfort, low fuel consumption, space and power within the criterias of the

performance.

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Performance improvement

The continuous request for a clean environment leads legislators to define

always lower emission limits, limits which are hard to reach without taking

appropriate measures in automotive construction.

Cleaner motors, optimized carbration proces and lighter car bodies with

important weight reduction are requested to reach these low emissions

requests.

Weight reduction got really important in car technology, as the load on the

engine decreases of this amount of weight. In consequence the motor works

less and emissions decrease.

4 TWB basics

Lower emissions

Efficiency is defined by fuel consumption and marks the distance which can be

performed with a certain amount of fuel.

As lighter a car body, as less the load and as higher the efficiency.

Weight reduction

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Higher efficiency

Since introduction of crash tests, everybody knows that cars are safe. Today

cars deform with a crash, absorbing the energy of a hit drastically.

We further know that this deformation is programmed by car manufacturers, as

it shall perform in order to safe the life of passangers and avoid to squeeze

them in the car itself.

We expect the cars today to be safe hitting them from all directions!

6 TWB basics

Safety

Weight reduction in automotive engineering was reached using thin metal

sheets where only lower loads are expected and thick metal sheets where

higher loads are expected.

This allows to build cars stable there where they shall be strong and safe

weight where load resistance is not requested.

Tailored welded blanks are further the

perfect tool to control the deformation

in case of accident.

7 TWB basics

One step of development

Weight reduction in automotive engineering was reached using thin metal

sheets where only lower loads are expected and thick metal sheets where

higher loads are expected.

This allows to build cars stable there where they shall be strong and safe

weight where load resistance is not requested.

Tailored welded blanks are further the

perfect tool to control the deformation

in case of accident.

8 TWB basics

One step of development

As the name says, tailored welded blanks are

parts, where a thin metal sheet gets welded against a thick metal sheet.

Laserwelded.

The thin laser beam melts both materials together in the most gentle way. Heat

is applied with a thinny laser beam only there where it’s needed.

The result is a perfect coupling of the materials.

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Production of tailored welded blanks

Always more complex equipment required to comply with increasing

request. Here a sample of a TWB production equipment:

10 TWB basics

Challange on equipment

Thank you for your interest on tailored welded blanks and their use in

automotive industry.

11 TWB basics

Thank you

12

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TWB basics