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Low energy short arc EWM- cold Arc ®

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The cold arc... ... the impossible made possible!OverviewPrinciple, solution and material transfer of the EWM-coldArc®Heat-reduced welding of the thinnest possible panels Low-heat brazing with CuSi

Слайды и текст этой презентации

Слайд 1Low energy short arc
EWM-coldArc®

Low energy short arcEWM-coldArc®

Слайд 2The cold arc...
...

the impossible made possible!
Overview
Principle, solution and material transfer of the

EWM-coldArc®
Heat-reduced welding of the thinnest possible panels
Low-heat brazing with CuSi and low-melting zinc brazing wire
Mixed connections
Manual and automatic MAG standard applications
The cold arc...       ... the impossible made possible!OverviewPrinciple, solution and material

Слайд 3Principle of EWM-coldArc®
Ignition in the standard short arc, 1.0 mm

ZnAl4-solder
Principle of low-heat coldArc®

Principle of EWM-coldArc® Ignition in the standard short arc, 1.0 mm ZnAl4-solderPrinciple of low-heat coldArc®

Слайд 4The modified short arc is regulated in the energy source

only
New type of highly dynamic inverter switching
Very fast digital

process regulation
With standard torch
Drastic reduction of the power peak on re-ignition of the arc
Significant reduction of the heat input during the melting phase

Solution

The modified short arc is regulated in the energy source onlyNew type of highly dynamic inverter switching

Слайд 5The following results from the nearly powerless material transfer and

the reduced heat feeding:
Significant reduction in the panel thickness possible
Extremely

low spatter
Excellent fissure bridging
Seam geometry individually influenceable
Minimal material distortion

Material is transferred with the EWM-coldArc® without mechanical support of the wire drive unit, i.e. vwire = const.

HG-Film, 8.000 B/s

Material transfer

The following results from the nearly powerless material transfer and the reduced heat feeding:Significant reduction in the

Слайд 6Standard short arc
Power at reignition
EWM-coldArc®short arc
Reduced arc power during reignition

Standard short arcPower at reignitionEWM-coldArc®short arcReduced arc power during reignition

Слайд 7voltage [V]
KLB
ÜLB
SLB
RLB (Highspeed)
forceArc®
ILB = Pulsed arc
KLB = Short arc
ÜLB = Transition arc
SLB = Spray arc
RLB = Rotating arc (Highspeed)
coldArc®
ILB
Arc

types

voltage [V]KLBÜLBSLBRLB (Highspeed)forceArc®ILB 	=	Pulsed arcKLB	=	Short arcÜLB	=	Transition arcSLB	=	Spray arcRLB	=	Rotating arc (Highspeed)coldArc®ILBArc types

Слайд 8Overview „Application areas“

Overview „Application areas“

Слайд 9MSG-Welding
Available characteristic curves

MSG-Welding Available characteristic curves

Слайд 10MSG-Brazing
Available characteristic curves

MSG-Brazing Available characteristic curves

Слайд 11Mixed joints
Available characteristic curves

Mixed jointsAvailable characteristic curves

Слайд 12in Production and repair in the manual processes
Applications

in Production and repair in the manual processesApplications

Слайд 13Applications

Applications

Слайд 14The following results from minimising the power intake with digital

process control of each material transfer:
coldArc welding, edge-formed seam on
double-walled

sound absorber,
0.4 mm 1.4301, 1.2 mm 1.4370 wire,
vweldß = 3.5 – 4.0 m/min

No melt drip even without weld-pool backing for thin metal
Excellent fissure bridging
Very high welding speeds
Expansion of the panel thickness range to less than 0.3 mm ⇒ weight reduction

Welding the thinnest possible panels

The following results from minimising the power intake with digital process control of each material transfer:coldArc welding,

Слайд 15The "drop" size and seam profile are individually definable by

the process regulation. For MIG brazing, that means:
Excellent fissure bridging
Minimal

damage to the zinc coating with copper-based solder
Excellent manageability with all standard torch systems
Manual brazing in all positions

Manual coldArc-brazing, 4.0 mm gap 1.0 mm DC 04 ZE 75/75, 1.0 mm CuSi3 wire

Robot coldArc brazingg, 1.0 mm elektrolytic zinc-plating steel panel, 1.0 mm CuSi3 wire

MIG brazing

The

Слайд 16Aluminium/silicon alloys: AlSi 5 … AlSi 12
Zinc/aluminium alloys: ZnAl 2

… ZnAl 25

Brazing of galvanised steel
Mixed connections of galvanised

steel with aluminium, welding on aluminium side and brazing on steel side

Zinc – an alternative to copper-based solder

Aluminium/silicon alloys: AlSi 5 … AlSi 12Zinc/aluminium alloys: ZnAl 2 … ZnAl 25Brazing of galvanised steel Mixed

Слайд 17For the first time, MIG brazing with a new type

of filler material based on zinc (Tboil.≈ 400°C, Tboil≈ 900°C)

is possible:

No damage to the zinc layer
Excellent corrosion resistance
Minimum distortion
Comparable strength to CuSi solder, 0.75 mm galvanised steel:
− Fillet weld on lap joint: 340 MPa
− Butt weld: 200 MPa

coldArc brazing of galvanised steel with zinc-based wire

Low-melting zinc-based solder

For the first time, MIG brazing with a new type of filler material based on zinc (Tboil.≈

Слайд 18Al



St
Zinc and even magnesium can be used for the first

time in the MSG process to produce mixed connections with

coldArc.
Aluminium/steel
Magnesium/steel
Aluminium/magnesium

coldArc fusion of aluminium/steel mixed connections with zinc-based wire

Macro-section of aluminium/steel mixed connections

Mixed connections

AlStZinc and even magnesium can be used for the first time in the MSG process to produce

Слайд 19The laser or plasma support of the relatively „cold“ coldArc

leads to:
Excellent wetting of the solder on thicker galvanised steel

panel surfaces
Increase in load-bearing cross-section of the brazing
Significantly higher joining speed

Laser-supported EWM-
coldArc joining of 1.5 mm DC04ZE75/75, edge-formed seam, 1 mm gap,
PLaser=500W

Macro-section

EWM-coldArc® -Hybrid process

The laser or plasma support of the relatively „cold“ coldArc leads to:Excellent wetting of the solder on

Слайд 20пайка
EWM-coldArc®
Варианты применения

пайкаEWM-coldArc®Варианты применения

Слайд 21сварка
EWM-coldArc®
Варианты применения

сваркаEWM-coldArc®Варианты применения

Слайд 22PHOENIX DRIVE 4L P
PHOENIX DRIVE 4 ROB
Источник тока
Выполнение работ вручную
Автоматическое

выполнение работ
Горелка для роботизированной сварки
Горелка для ручной сварки
Стандартные конфигурации аппаратов

PHOENIX DRIVE 4L PPHOENIX DRIVE 4 ROBИсточник токаВыполнение работ вручнуюАвтоматическое выполнение работГорелка для роботизированной сваркиГорелка для ручной

Слайд 23PHOENIX RC2
MIG/MAG torch Master Feeder
Пример использования: система Master Feeder с водяным

охлаждением
MIG/MAG Robot system
Пронумеровать и дать сноску или подписать

PHOENIX RC2MIG/MAG torch Master FeederПример использования: система Master Feeder с водяным охлаждениемMIG/MAG Robot systemПронумеровать и дать сноску

Слайд 24PHOENIX RC2
МИГ/МАГ двухтактная горелка
Пример использования: стандартная/двухтактная горелка с водяным охлаждением
МИГ/МАГ

горелка
MIG/MAG Robot system

PHOENIX RC2МИГ/МАГ двухтактная горелкаПример использования: стандартная/двухтактная горелка с водяным охлаждениемМИГ/МАГ горелкаMIG/MAG Robot system

Слайд 25Спасибо за внимание

Спасибо за внимание

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