Magnetic Impelled Arc Butt Welding (MIAB)
NO EDGE PREPARATION ! NO FILLER MATERIAL !
Authorized selling agent for S.E. Asia & Middle East
M/s. JIT Engineering & Solutions Pte. Ltd., Singapore.
Principle of MIAB welding
MIAB welding is a forge welding process that relies on an electric arc to generate
necessary heating to melt the surfaces being welded.
How MIAB welding works?
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Welding arc rotate in the gap between tubes due to the presence of external magnetic
field generated with permanent or electromagnets.
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The maximum Linear Speed of the arc movement is 870 km/hour.
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The spinning arc in combination with thermal conductivity of the welded metal creates
very uniform heating at the joint.
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On completion of welding, the welded parts are rapidly brought under pressure.
Applications of MIAB welding
• Butt welding of thin-walled tubes
• Butt and T-butt welding of automobile parts
• Butt welding of thick-walled tubes
• Butt welding of solid parts
• Tube to plate welding
• Tube to flange welding
“This machine tool based process is attractive to the
mass production industries because of the short cycle
times and reproducible quality.”
Materials to be welded
• Steel
• Stainless steel
• Aluminum alloys
Tube Welding
MIAB welding reduces weld time by 90%
Optional features of MIAB
 Two welds can be carried out simultaneously on a double ended machine.
 Mobile machines are available.
 Retractable electromagnetic coils and field profile control for easy loading
and unloading of work.
 Can be configured for automatic flash removal.
Mobile MIAB machines can be used on site and allow
transmission pipelines to be welded with potential
savings due to improved productivity over other arc
welding processes.
MIAB welding machines for pipes
MD-1
Equipment composition
1. Welding Head
2. Pump Station
3. Control Cabinet
4. Weld Management System
5. DC Power Source
K-872
Machine МD-1 is intended for welding small
diameter tubes & pipeline.
Machine K-872 is intended for welding
pipelines under field conditions.
Applications
Solid Rods
Solid Rod OD 22mm
Welding Time:12 s
Pull test of weld joint of Reinforcement Rod - OD 32 mm
Applications
Tubes & Pipelines
Tubes OD 22 & 48 mm
Hydraulic Test Result - 72.5MPa.
“Pipes with OD up to 219mm can be welded using
MIAB”
Automotive applications
MIAB welding is predominantly used in the European
Automobile Industry
Vehicle drive shafts.
Rear axle assembly.
Wheel bearing housing.
Pipe and tube assemblies.
Shock absorber assemblies.
Threaded sleeves assemblies.
Nuts welded to plates.
Brake pipes
Applications
Shock Absorber
Machine MD-103 and MD-102 type
for MIAB welding of shock absorber
Shock absorber
Welded section:
OD53x1,8mm.
Productivity: 200
butts/hour
Welding time: t=2.9 s
Material: Steel 20 +
Steel 35
Applications
Piston Assembly: OD22x2.2mm
Welding Time: 3.6 s
Automobile Part: Piston Rod
Pull Test. Force of break - 12900 kg
HAZ
4.4mm
Line of
Joint
x250
Macro section of welded joint
micro section of welded joint
Applications
Drive Shaft OD75x2.1 mm
Welding time: 3.8 s
Automobile part: Drive Shaft
Machine K1015 for drive shaft welding OD 70 102mm,WT 2-4mm.
“The tests conducted on the drive shaft have indicated that MIAB
welding does not reduce durability of the drive shaft.”
Applications
Welded Joint of Connecting Pipe:
OD 31.7x 4.1 mm
Welding Time: 7 s
Automobile Part: Oil Tank
Field for MIAB welding
Applications
Liquid Propane Tanks
LP Tank Assembly, Boss Weld
Size: OD 31.7 mm, WT 4.1 mm
Welding Time: 7 Second
LP Tank Assembly, Girth Weld
Size: OD203.2, WT2.1 mm
Welding Time: 12.5 s
Welded Joint after Tensile
Elongation Test
Comparison to other welding processes
MIAB has replaced automated TIG, MIG, Resistance and Flash Butt Welding.
Why MIAB scores over other welding process?
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Less internal flash.
Shorter weld times.
Less metal loss.
Reduced machine maintenance.
Uniform welding.
Low power consumption
No rotation of components
No consumables needed. e.g.. Filler material.
Testimony
An executive from the Ford Motor Company summarized their use
of MIAB welding in the manufacturing of the Fiesta rear axle cross
tube assembly.
“In selecting MIAB welding, we first considered other more common
welding methods: Friction, Flash, and GMAW. Friction was not
acceptable because of the difficulty maintaining the radial relationship
between the shaped flange spindles and the axle tube. Flash welding was
known to leave clamping marks on parts, and presented problems
regarding maintaining part alignment. GMAW was considered a more
expensive process to operate and created more alignment problems due
to distortion. As a result, they decided to pursue MIAB welding for this
application. After optimizing the welding variables, conducting all the
necessary testing, and developing the weld quality monitoring
procedures, the process was successfully implemented in mass
production.”
MIAB- An overview
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Can weld tube to tube or tube to flange, and can weld irregular or non circular
components as easily as circular.
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One of the fastest methods of welding tube.
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Welds are free from inclusions and impurities.
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An automated process enabling the resulting welds to be highly reproducible.
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The components are not rotated so the alignment can be maintained.
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Uniform heating of the joint results in low distortion.
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Welds a wide variety of materials including dissimilar combinations.
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Can be interfaced with automatic handling systems