1. Magnetic Impelled Arc Butt Welding
NO EDGE PREPARATION ! NO FILLER MATERIAL !

2. 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?
Welding arc rotate in the gap between tubes due to the presence of external magnetic field generated with permanent or electromagnets.
The maximum Linear Speed of the arc movement is 870 km/hour.
The spinning arc in combination with thermal conductivity of the welded metal creates very uniform heating at the joint.
On completion of welding, the welded parts are rapidly brought under pressure.

3. 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.”

4. Materials to be welded
Steel
Stainless steel
Aluminum alloys

5. Tube Welding
MIAB welding reduces weld time by 90%

6. 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.

7. MIAB welding machines for pipes
MD-1
K-872
Equipment composition
Machine МD-1 is intended for welding small diameter tubes & pipeline.
Machine K-872 is intended for welding pipelines under field conditions.
1. Welding Head
2. Pump Station
3. Control Cabinet
4. Weld Management System
5. DC Power Source

8. Applications Solid Rods
Solid Rod OD 22mm
Welding Time:12 s
Pull test of weld joint of Reinforcement Rod - OD 32 mm

9. Applications Tubes & Pipelines
Hydraulic Test Result MPa.
Tubes OD 22 & 48 mm
“Pipes with OD up to 219mm can be welded using MIAB”

10. 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

11. 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

12. Automobile Part: Piston Rod
Applications
Automobile Part: Piston Rod
Piston Assembly: OD22x2.2mm
Welding Time: 3.6 s
Pull Test. Force of break kg
Macro section of welded joint
x250
micro section of welded joint
HAZ 4.4mm
Line of Joint

13. Automobile part: Drive Shaft Applications
Drive Shaft OD75x2.1 mm
Welding time: 3.8 s
Machine K1015 for drive shaft welding OD mm,WT 2-4mm.
“The tests conducted on the drive shaft have indicated that MIAB welding does not reduce durability of the drive shaft.”

14. Automobile Part: Oil Tank
Applications
Automobile Part: Oil Tank
Field for MIAB welding
Welded Joint of Connecting Pipe:
OD 31.7x 4.1 mm
Welding Time: 7 s

15. 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

16. Comparison to other welding processes
MIAB has replaced automated TIG, MIG, Resistance and Flash Butt Welding.
Why MIAB scores over other welding process?
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.

17. 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.”

18. MIAB- An overview
Can weld tube to tube or tube to flange, and can weld irregular or non circular components as easily as circular.
One of the fastest methods of welding tube.
Welds are free from inclusions and impurities.
 An automated process enabling the resulting welds to be highly reproducible.
The components are not rotated so the alignment can be maintained.
 Uniform heating of the joint results in low distortion.
Welds a wide variety of materials including dissimilar combinations.
Can be interfaced with automatic handling systems