GMAW WELDING (MIG)
Metal Insert Gas (Gas Metal Arc Welding)
Lynn Welding provides Nadcap accredited fusion welding services and specializes in GMAW (Gas Metal Arc Welding).
- Mig Welding of Aluminum
- Lynn Welding Specializes in MIG Welding - GMAW (Gas Metal Arc Welding)
- Mig Welding Services in CT, NY, & MA
- Gas Metal Arc Welding (GMAW) Mig Welding Company
- Professional Mig Welding for Aerospace Applications
MIG Welding or GMAW (Gas Metal Arc Welding)
The MIG welding process is different than the TIG welding and has different application in material joining.
GMWA main character is feeding the electrode/filler material continuously through the welding gun. In this is case the electrode is melted and deposited into the base material to create the weld joint.
The shielding gas is created from the welding gun as well to help protecting the weld from contamination. GMAW uses inert gas as well by using argon and helium and some would use carbon dioxide as it depends on the type of application and the material you are using.
The electrode is consumable and mainly comes in spools. According to the American Welding Society, the electrode is identified by letters ER and numbers after that present a unique characteristic. Each character is an identification for the wire, and it is strength.
For example the first two letter ER presents the electrode, the second two numbers present the strength of the filler material in PSI, the forth letter presents wire type (S) which is solid wire for instance, the last number presents the chemical composition.
For example, ER-70S-2 or ER 70S-6 as each number and letter shows a unique identification of the electrode.
A photos GMAW process element.
Source: America Welding Society
There are different types of the metal transfer and they all use different voltages and current to achieve best weld results.
GMAW has four-metal transfer which are globular transfer, pulsed arc, short circuiting, and spray transfer. Each method is used based on the material and application used.
See below different types of metal transfer showing spray, globular and short-circuiting transfer.
Source: American Welding Society
The wire and the base material have to be clean to produce a quality weld. Any contamination will affect the weld as the GMAW tends to lose more shielding gas than the GTAW.
Lack of penetration is another challenge when using the GMAW process however with an experience welder, correct set up and right method of depositing, penetration can be achieved.
We often consider GMAW as the more heavy-duty process as it is designated for structural welding application.
Our team well qualified and experienced to perform GTAW and GMAW to produce quality, clean and successful weld.
Lynn Welding is qualified to perform GMAW process per AWS D1.1, D1.2 and D1.6.
Hope you enjoyed reading the article and learned a little about each process!
Lynn Welding's GMAW Welding (MIG) Approvals
Lynn Welding is a well known Raytheon Approved Welding company when it comes to welding and machining for the Aerospace, Defense, Nuclear, Industrial, and Medical industries.
Raytheon Approved Fusion Welding
- D17.1 (Specification For Fusion Welding For Aerospace Applications)
- WS33739 (Process Specification For Aerospace Fusion Welding)
- AWS D1.1 (Carbon Steel)
- AWS D1.2 (Aluminum)
- AWS D1.3 (Structural Welding Code - Sheet Steel)
- AWS D1.6 (Stainless Steel)
- AWS D9.1 (Sheet Metal)
Lynn Welding holds a certification from Boeing for Fusion Welding & Resistance Welding. All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)
Boeing Approved Fusion Welding
- D1-4426 (Processor Basic Quality System for D1-4426 approval only Quality System)
- BAC 5975 (Fusion Welding - CRES Heat Resist Nickel - Cobalt Alloys BAC 5975)
- MIL-STD-2219 (Fusion Welding for Aerospace Applications - Aluminum Alloys MIL-STD-2219)
- BAC 5975 (CRES Heat Resist Nickel - Cobalt Alloys)
- AMS-STD-2219 (Aluminum Alloys)
- MIL-W-8604 (Aluminum Alloys MIL-W-8604)
Lynn Welding holds a NADCAP-Approved Welding Certification for Resistance Welding, Fusion Welding, & more.
Nadcap Approved Fusion Welding
- PWA 16 (Pratt and Whitney Approved) (GTAW Welding)
- BAC 5975 (Boeing Approved) (GTAW Welding)
- CPW 24 (Pratt and Whitney Canada Approved) (GTAW Welding)
- AWS D1.3 (GTAW Welding)
- AWS D1.4 (GTAW Welding)
- AWS D1.6 (GTAW Welding)
- AWS D1.9 (GTAW Welding)
- BPS 4404 (Bell Approved) (GTAW Welding)
- AMS-ST0-2219 (ULA Approved) (GTAW Welding)
- AWS D1.1 (GTAW Welding)
- Gamps 2302 (Gulfstream Approved) (GTAW Welding)
- HS 191 (UTAS Approved, Formerly Hamilton) (GTAW Welding)
- AWS D1.2 (GTAW Welding)
- Ground Combat Vehicle Welding Code 12479550 (GTAW Welding)
- EPS 14530 (Rolls Royce Approved) (GTAW Welding)
- P8TF3 (GE Aviation Approved) (GTAW Welding)
- D17.1 Class A, B and C (GTAW Welding)
- Mil-STD-2219 Class A, B and C (GTAW Welding)
- AMS 2685 (TIG Welding)
Lynn Welding is Bell Helicopter approved for Resistance Welding and Fusion Welding processes, and preparation of metals.
Bell Helicopter Approved Fusion Welding
Lynn Welding holds a certification from GE Aviation for Fusion Welding, Brazing, & Resistance Welding.
General Electric Approved Fusion Welding
- CS00 (Titanium Welding)
- M50T1 (CS – Welding all Processes)
- P8TF3 (Gas Shielded Arc Welding)
- P8TF11 (Gas Tungsten Arc, Gas Metal Arc And Plasma Arc Welding)
- P21TF6 (In-Process Welding Of Castings)
We are Rolls Royce Corp. Sub Tier Supplier (RRU6) for Fusion Welding and Resistance Welding, Spot and Seam
Rolls-Royce Approved Fusion Welding
- AWS D17.1 (AWS D17.1 Fusion Welding)
- EDS 1306 (EDS 1306)
- EPS 14500 (EPS 14500)
- EIS 1200 Acceptance Criteria for Fusion Welding (EIS 1200 Acceptance Criteria for Fusion Welding)
- EPS 14530 Fusion Welding (EPS 14530 Fusion Welding)
Lynn Welding is a Pratt & Whitney Canada Approved Welding Facility for Fusion Welding, Resistance Welding, and Tack Welding.
Pratt & Whitney Canada Approved Fusion Welding
- CPW 24-1A (Carbon and Low Alloy Steels)
- CPW 24-2AJ (Corrosion-resistance steels other than Precipitation Hardenable)
- CPW 24-22A (Precipitation Hardenable, Corrosion-resistance steels)
- CPW 24-3AJ (Nickel and Non-precipitation Hardenable Nickel Alloys)
- CPW 24-33AJ (Precipitation Hardenable Nickel Alloys)
- CPW 24-6AJ (Commercial Pure Titanium)
- CPW 24-66AJ (Titanium Alloys)
- CPW 24-7A (Cobalt Alloys)
United Launch Alliance welding certifications. All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)
United Launch Alliance Approved Fusion Welding
- AMS-STD-2219 (Fusion Welding (All Types))
- AC 7004 / AS 9003 (NADCAP Accreditation to AS 9003)
- AC7110/5 (Fusion Welding)
- AC7110/13 (Metal Evaluation of Welds)
- AC7110/12 (Operator Qualification)
- AC7110 (Welding/Brazing)
Lynn Welding holds a Sikorski-Approved Welding Certification for Fusion Welding, Brazing & Resistance Welding
Sikorsky Approved Fusion Welding
- AWS D17.1 (Specification For Fusion Welding For Aerospace Applications)
- MIL-STD-2219 (Military Standard: Fusion Welding For Aerospace Applications)
Lynn Welding is approved by General Dynamics for Fusion Welding, Resistance Welding, Spot, Seam and Stitch
General Dynamics Approved Fusion Welding
Lynn Welding is a LCS Approved Welding Facility for Fusion Welding, Resistance Welding, and Tack Welding.
Pratt & Whitney Approved Fusion Welding
- PWA 16-1 (Carbon and Low Alloy Steels)
- PWA 16-2 (Corrosion-resistance steels other than Precipitation Hardenable)
- PWA 16-22 (Precipitation Hardenable, Corrosion-resistance steels)
- PWA 16-222 (Cres. Precipitation Hardenable Alloys)
- PWA 16-3 (Nickel and Non-precipitation Hardenable Nickel Alloys)
- PWA 16-33 (Precipitation Hardenable Nickel Alloys)
- PWA 16-37 (Ni & Non Precip. Hard. Nickel Alloys Welded To Cobalt Alloys)
- PWA 16-333 (Ni & Non Precip. Hard. Ni Alloys Welded To Precip. Hard. Ni Alloys)
- PWA 16-4 (Aluminum Alloys)
- PWA 16-6 (Commercial Pure Titanium)
- PWA 16-66 (Titanium Alloys)
- PWA 16-666 (Titanium Alloys, Special Alloy Filler Metal Requirement)
- PWA 16-7 (Cobalt ALLOYS)
- PWA 16-733 (Cobalt to Nickel Alloys)
All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)
Gulfstream Approved Fusion Welding
- GAMPS 2302 Fusion Welding (GAMPS 2302 Fusion Welding)
- 6.01 Fusion Welding (Titanium, Aluminum, Steel) (6.01 Fusion Welding (Titanium, Aluminum, Steel))
- AWS D17.1 (AWS D17.1)
We are an approved Hawker Beechcraft welder and fabricator for Fusion Welding and Resistance Welding, Spot and Seam
Hawker Beechcraft Approved Fusion Welding
- 36B1 (Welding: Fusion - Aluminum Alloys)
- 36C1 (Welding: Fusion - Magnesium)
- 36D1 (Welding: Fusion- Steel Alloys)
- 36EA (Welding: Fusion-Titanium Alloys)
GMAW Welding (MIG) Blog Articles
Nadcap and What it Means for Aircraft Quality
Jan 13, 2021
The production of commercial aircraft occurs on a global scale. According to the Defense and Security Monitor, 2019 was a banner year for Airbus, who delivered a record 642 A320 family jets. In December 2019, Boeing and Airbus delivered 35 and 138 commercial aircraft, compared.
The Benefits of Resistance Welding Per AWS D17.2
Oct 14, 2020
Resistance welding is a form of marrying of metals through the application of pressure and passing current for a specified interval of time through the metal area. Many design engineers and manufacturers find resistance welding to be advantageous as there is not another form of.