Gas METAL ARC WELDING
Gas Metal Arc Welding Services
Reliable Gas Metal Arc Welding services (GMAW) utilize a semi-automatic or automated arc welding technology that deploys a welding gun to feed a continuous and consumable electrode wire and a shielding gas to fuse two pieces of metal.
What Are Gas Metal Arc Welding Services?
Commonly abbreviated as GMAW, gas metal arc welding services encompass two subtypes: Metal Inert Gas Welding (MIG) and Metal Active Gas Welding (MAG). Regardless of your preference between these subtypes, GMAW is ideal for joining chassis sections where joint strength and stiffness are paramount. This method is also highly effective for welding pieces of different materials to structural sections like pipes and brackets, especially when a longer fatigue life of the welded joint is essential. GMAW is invaluable for welding in confined spaces that other methods can’t reach.
MIG and MAG: What Is the Difference?
People often equate MIG with MAG, but there are distinct features setting them apart:
MIG Gas Metal Arc Welding Service
Metal inert gas welding uses inert gas mixtures as the shielding gas, such as a combination of argon and helium for non-ferrous metals like aluminum. These inert gases don't react with the filler material or the weld pool.
MAG Gas Metal Arc Welding Services
Metal active gas welding employs active shielding gases, like carbon dioxide and argon-oxygen mixtures, for welding steel. These gases react with the filler metal, influencing its mechanical properties. Specialized gases like hydrogen and nitrogen can be used for welding other materials.
How Do Gas Metal Arc Welding Services Work?
In gas metal arc welding services, tan electric arc is generated by a continuous feed consumable electrode wire shielded by an externally supplied gas. This process necessitates a welding gun, electric power, electrode wire, and a source of shielding gas. The welding gun focuses on the electrode wire, current wire, and shielding gas tube. An arc with a constant voltage power supply and wire feed speed unit maintains the arc length. Gas metal arc welding services have become the preferred choice for various industrial welding applications due to their speed, automation, and versatility.
Metal Transfer Mode
The method of metal transfer from the filler wire to the weld pool determines the process’s operating characteristics. There are four metal transfer modes in gas metal arc welding services:
Short-Circuiting
Used for low heat input operations, this method requires highly skilled personnel to prevent a lack of fusion. It involves the wire dipping into the weld pool with a low voltage setting to minimize spatter.
Globular Transfer
Occurs when there's a minimum current threshold, below which droplets are not forcibly projected across the arc. This can lead to erratic transfer of large droplets, causing spatter.
Spray Transfer
This method demands higher voltage and current to produce higher heat input, with molten metal transferring in the form of small droplets.
Pulsed Transfer
In pulsed metal transfer, a droplet of filler metal transfers from the electrode to the workpiece with each pulse cycle of current, resulting in less spatter and faster welding.
Gas Metal Arc Welding Services at Lafarge & Egge
At Lafarge and Egge, our Nadcap, AS9100/ISO 9001 certified, DDTC/ITAR registered welding special processor provides tight tolerance, build-to-print precision welding, and fabrication solutions in practically any alloy.
We provide reliable gas metal arc welding services that deliver advanced manufacturing solutions to OEMs and major manufacturers in several industries, including space, aerospace, medical, communications, military, and others.
Our clients, including the aerospace, semiconductor, medical, tool and die, and military sectors, rely on us to help them build mission-critical and flight safety vital systems, molds, and structures. Our welders are self-proclaimed perfectionists who understand the importance of discipline in every aspect of their art. For more information or to request a quote for our excellent gas metal arc welding services, visit our website today.