Svejsningens ABC
What is pulsed MIG welding, and for what you can use it?
26. februar 2024
Pulsed MIG/MAG welding is a significant improvement in welding technology, offering accuracy, productivity, and flexibility that conventional welding methods can hardly compete with. This advanced process has become popular for professionals looking to improve weld quality, especially in demanding applications. Here's a closer look at how pulsed MIG/MAG welding works and the situations where it truly shines.
Susanna Norja
Understanding pulsed MIG/MAG welding
Pulsed MIG/MAG welding is an advanced variant of MIG (Metal Inert Gas) or MAG (Metal Active Gas) welding that changes the welding current at set intervals, producing a series of high-peak currents mixed with lower background currents. This controlled pulsing action allows transferring single droplets of molten metal from the electrode to the weld pool during the high-peak phase while maintaining the arc and minimizing heat input during the lower background phase. Later in this article, we will only use the term MIG welding, but we will refer to both MIG and MAG welding.
How pulsed MIG welding works
The output current alternates between high and low values for each pulse. This alternating current creates an arc that switches between hot and warm phases during welding. The high current melts the filler wire into the weld pool. The low current phase is where the magic happens. It prevents burn-through and deformation by minimizing heat input. Imagine it as a dance: hot steps for penetration, followed by gentle steps to avoid overheating.
Advantages of pulsed MIG welding
Say goodbye to post-weld cleanup nightmares. Pulsed MIG welding gives welders greater control over the weld bead profile, penetration, and overall aesthetics. It is ideal for welding, where managing the weld pool and heat input is critical.
This method significantly reduces spatter and allows welding at lower overall heat inputs. The result is a cleaner weld area and minimized risk of welding deformation and distortion, which is particularly beneficial for thin and heat-sensitive materials or complex shapes.
When do you need pulsed MIG welding
Welding thin materials
The pulsed MIG welding process is ideal for working with thin materials because of its low heat input characteristic, which reduces the risk of burn-through and distortion. However, various short arc welding processes are often the best option for welding very thin steels.
Welding Aluminum and Stainless Steel
This is why it's also an excellent welding method for Aluminum and Stainless Steel. You can prevent issues like cracking or distortion by having precise control and lower heat input.
When you need high aesthetic results
When the application requires high aesthetic standards, pulsed MIG welding can produce clean, visually appealing beads with minimal cleanup required.
When you want to improve throughput time
The reduction in spatter improves the weld's quality and decreases post-weld cleanup time, enhancing overall productivity.
AlMg5-4mm-AlMg5-1.2mm-Argon
316RST-5mm-316LSi-1.0mm-Ar+2%co²
Fe-5mm-fe-1.0mm-Ar+18%co²
Conclusion
Pulsed MIG welding is an advanced technique that combines the advantages of standard MIG welding with better control over heat input and metal transfer. It can lower spatter, reduce distortion, and provide superior control, making it a valuable tool for any welder, especially for applications that need accuracy and skill. Pulsed MIG welding is a technique that can elevate the quality of your welding projects to new heights.
Discover Kemppi's handy single-phase pulse MIG welding machine >>> Master M 205
Susanna Norja
Editor-in-chief of the Welding Value blog, content producer and Social Media Manager at Kemppi until March 2024.
Relaterede produkter
Produktfamilie
Master M 205 og Master M 323 sætter nye standarder for kraft og ydeevne i en bærbar MIG-svejsemaskine. Med et kompakt letvægtsdesign, der er nemt at bære, er det en fornøjelse at have en MIG-svejsemaskine, der kan flyttes hen, hvor du har brug for den.
Flere blogindlæg
Understanding and preventing common welding defects
Welding demands precision, but even skilled welders can encounter defects. Understanding common welding issues is critical to ensure high-quality results. Here are some frequent welding defects and how to avoid them.
Svejsningens ABC
MIG/MAG welding arc types
In MIG/MAG welding, the mode of material transfer between the filler wire and the weld pool changes in line with the welding current.
Svejsningens ABC
High-quality pulse welding with a 1-phase MIG/MAG welding machine
The versatility of portable welding equipment has traditionally been limited by the lack of pulsed MIG/MAG welding. It has been argued that three-phase power is required to achieve high-quality MIG/MAG pulse welding.
Manuel svejsning
How does steel welding benefit from special processes?
Welding mild steels may often be considered a simple task. However, welding these steels has specific characteristics that can make the welding process challenging.
Manuel svejsning, Svejsningens ABC
New Kemppi Robotics Team
Achieving strategic goals and enhancing customer experience
Mennesker
How to choose the MIG/MAG welding torch
MIG/MAG welding is one of the most common and versatile welding processes. It is used for various applications, such as automotive, construction, fabrication, and maintenance. However, choosing a suitable welding torch for your job is essential to achieve optimal results.
Manuel svejsning, Svejsningens ABC
