SSalvagnini fiber laser

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• Salvagnini Fiber Laser Technology

• Comparison with other laser source

• Salvagnini Fiber Laser Capabilities

• Cutting performance exemple

• Salvagnini fiber laser in the world: a feed back

Topics

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• Salvagnini Fiber Laser Technology

• Comparison with other laser source

• Salvagnini Fiber Laser Capabilities

• Cutting performance exemple

• Salvagnini fiber laser in the world: a feed back

Topics

4

Fiber laser wavelength

Fiber laser beam λ ≈ 1μm: transport through optical fiber.

Fiber laser (1,07μm) CO2 laser (10,7μm)

CO2 laser beam λ ≈ 10μm: NO transport through optical fiber.

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SEE ANIMATION

Fiber laser source principle

Outer Cladding (polymeric)

6 μm 125 μm

250 μm

LIGHT PUMP (diodes)

SOLID VITREOUS FIBER ¼ mm thick!!!

SEE ANIMATION

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Fiber laser source module composition

Pump diode modules: pump the light radiation into the active fiber 1

2

1

2

3

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It is a solid state source composed of several modules; each module is composed of:

Optical active fiber with a doped core (YTTERBIUM) and double cladding, where the pumped light excites the core

Transport optical fiber bringing out the power from the module .

SEE IT LIVE SEE IT LIVE

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PUMP LIGHT DIODE MODULES single indipendent pump light diode

Pump light diodes mounted on a single laser source module

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DOPED CORE ACTIVE FIBER Active fiber coil mounted on a single laser source module

Active fiber coil

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LASER SOURCE & BASIC MODULES

2kW fiber laser source is composed of 4 x 650W basic modules

3kW fiber laser source is composed of 6 x 650W basic modules

fiber laser source is composed of basic modules combined in fiber

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TRANSPORT THROUGH FIBER 50μm Optical Fiber transports laser beam from Source to focusing head – No Optical Path

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• Salvagnini Fiber Laser Technology

• Comparison with other laser source

• Salvagnini Fiber Laser Capabilities

• Cutting performance exemple

• Salvagnini fiber laser in the world: a feed back

Topics

12

TYPICAL CO2 LASER (with optical path) COMPARED TO

SALVAGNINI FIBER LASER

SEE IT WITHOUT WORDS SEE IT WITHOUT WORDS

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Beam transfer through fiber: no optical path

fiber laser beam (1,07 μm) transport through optical fibers CO2 laser beam (10,7 μm) NO transport through optical fibers

TYPICAL CO2 LASER SALVAGNINI FIBER LASER

No Optical Path Need Optical Path

Telescope Mirrors + Cooling

Bellows Clean/dry air/N2

Alignment

Frequent cleaning

Beam compensation

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Need maintenance

Laser generation in fiber = No Maintenance

TYPICAL CO2 LASER SALVAGNINI FIBER LASER

Laser gas

Turbine Heat exchangers Resonating cavity Amplifying mirrors

Warm-up time

Parts & Consumables

Regular maintenance

No maintenance Periodic Overhaul

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Disc source

• source with solid state active material: the generated laser beam has λ≈1μm, and can be transported through fiber, but the beam is not generated in fiber.

• it is a solid state source with laser resonator, cavity, amplifying mirrors and output mirrors; diode bar pumping. Every source with a cavity has a WARM-UP time!

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• The transport fiber section is wider so the beam quality is worse. the delivery fiber has a min. section of 100-200μm, against the 50 μm of a 3kW fiber source:

the beam generated in a cavity must be “reflected” and “focused” within the fiber, the diameter of which must not be too small ( the diameter of the focused beam will be at least

from 2 up to 4 times bigger).

• Efficiency of Disc is 15-20% against 25-30% of a Fiber source.

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Disc source

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• Salvagnini Fiber Laser Technology

• Comparison with other laser source

• Salvagnini Fiber Laser Capabilities

• Cutting performance exemple

• Salvagnini fiber laser in the world: a feed back

Topics

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source

fume ext.

machine

L3-L5 2kW fiber laser

≈ 18 kW

≈ 22 kW

chiller

Power Consumption 2kW & 3kW Fiber

WWW *

WWWW *

maximum consumption at full power ximmax*

source

fume ext.

machine

L3-L5 3kW fiber laser

chiller

≈ 32 kW

≈ 36 kW

The fiber laser high efficiency (η>25%) allows a low installed power laser high efficiency (η 25%%25%and a low power consumption

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source

fume ext.

chiller

machine

L1X 4kW CO2 SLAB

≈ 80 kW WWW *

maximum consumption at full power axma*

≈ 112 kW

Power Consumption 3kW Fiber vs 4kW CO2

≈ 22 kW WWWW * source

fume ext.

machine

L3-L5 3kW fiber laser

chiller

≈ 36 kW

The fiber laser high efficiency (η>25%) allows a low installed power laser high efficiency (η 25%%25%and a low power consumption

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Power Consumption in Stand-by

< 4 kW

≈ 30 kW Data from a

competitor 4kW CO2 brochure

source

fume ext.

machine

L3-L5 3kW fiber laser

chiller

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Warm up Time and Consumption

0 kW

0 sec

up to 30 kW up to 30min

Several CO2 sources have high warm up time and consumption

On some of them, even if equipped with automatic start up and shut down, warm up and shut down phases can last up to 20 – 30 min (according to the external temperature); during these

phases 50% of the time is at reduced power, while the other 50% is at full power.

This means high energy consumption even if the machine is not cutting.

source

fume ext.

machine

L3-L5 3kW fiber laser

chiller

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Low Power Consumption (compared on some tipical nestings )

The fiber laser high efficiency allows a low energy consumption

-70%

on all material and thickness

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Beam Power Density Thanks to wave length (λ≈1μm) and to beam transfer through very thin fiber (Φ=50μm), the fiber

laser beam can be focused to a very small spot (less than 0,1mm) = high power density and a great beam quality = greater cutting performance than CO2 Laser

4mm StainlessStee

l1mm

Alluminium

18mm Mild steel

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Single focusing head and lens high power density and a great beam quality allow & to handle all

material and thicknesses with a single focusing head and lens.

Fast production changeovers and less adjustment

fiber CO2

Focusing lens lifetime is higher and its price is cheaper

(NO TOXIC material)

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Material Reflectivity re

flect

ivity

wavelength (μm)

A- silver B- copper C- aluminium D- nickel E- mild steel

The reflectiveness of most metals increases with the wavelength The fiber laser beam’s lower wavelength is less reflective, so it can process materials which are difficult or dangerous to cut with a CO2 Laser

Fiber Laser CO2 Laser

See special materials cutting

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Materials and maximum thickness

The quality of cuts on limit thicknesses will depend on the geometries required, the quality of the material and the operating conditions of the system. At the limit values, the cut may have burrs on the edge.

2kW 3kW

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Low Hourly Running Costs: 2kW fiber

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Low Hourly Running Costs: 3kW fiber

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• Salvagnini Fiber Laser Technology

• Comparison with other laser source

• Salvagnini Fiber Laser Capabilities

• Cutting performance exemple

• Salvagnini fiber laser in the world: a feed back

Topics

30

Cycle time – cost per part

Laser machine have always been compared considering cycle time, that’s because hourly running costs have always been slightly similar.

On fiber laser the cost per hour is much lower, that means that:

� with a comparable cycle time the hourly running cost is lower

� even with a higher cycle time the hourly running cost can be lower or equal

Let’s see on a part

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Cost per part - ex. 1

200mm

2kW FIBER 3kW CO2 Slab

Running Cost per part

-55%

2kW FIBER 3kW CO2 Slab

Cycle time

-13%

Part n.1 Thickness: 0,6mm Mat: stainless steel

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Cost per part - ex. 2

200mm 2kW FIBER 3kW CO2 Slab

Running Cost per part

-50%

2kW FIBER 3kW CO2 Slab

Cycle time

-10%

Part n.2 Thickness: 0,8mm Mat: Electro Zinc

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Cost per part - ex. 3

200mm

2kW FIBRA 3kW CO2 Slab

Running Cost per part

-55%

2kW FIBRA 3kW CO2 Slab

Cycle time

-12%

Part n.3 Thickness: 1mm Mat: Alluminium

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Cost per part - ex. 4

100mm 2kW FIBER 3kW CO2 Slab

Running Cost per part

-45%

2kW FIBER 3kW CO2 Slab

Cycle time

+2%

Part n.4 Thickness: 6mm Mat: mild steel

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Cost per part - ex. 5

100mm 2kW FIBER Water JET 6000bar

Running Cost per part

-85%

2kW FIBER

Water JET 6000bar

Cycle time

-50%

Part n.5 Thickness: 3mm Mat: COPPER