Nadcap accredited resistance spot & seam welding.
Providing Nadcap accredited resistance welding services to our national and international customers.
Lynn Welding provides resistance welding services to many of its customers. Our team uses SCIAKY welders which are considered the best in the world for maintaining the strictest tolerances required by the aerospace industry. Our SCIAKY welders are capable of welding aluminum, Stainless steel, Titanium, Inconel and most other metals while maintaining the proper conditions to ensure a quality weld. Our resistance welding operations are closely monitored by our internal quality department which ensures that all of the resistance welding functions fall within the guidelines set forth by NADCAP (National Aerospace and Defense Contractors Accreditation Program).
Lynn Welding is AWS D17.2 Certified, view our other aerospace welding approvals by company using the links in the footer.
Resistance welding is the process of joining two or more pieces of metal by the application of heat, electricity, and pressure. Resistance welding embraces the branch of welding art in which the welding heat is generated by the resistance of the parts being welded and the passage of an electric current. It differs from other forms of welding in that no extraneous materials such as fluxes, filler rods, etc. are used; therefore metallography of the weld is not complicated by the addition of these materials. Resistance welding further differs from the fusion welding process, by utilizing the application of mechanical pressure to forge the heated parts together. The effect of the pressure is to refine the grain structure, thus producing a weld with physical properties in most cases equal to the parent material, and sometimes even superior.
the process of using the spot weld configuration but overlapping the actual weld nuggets over the length of the 2 pieces of metal being joined. This type of weld can produce the results of a seam weld in an area where two rotating wheel electrodes will not fit.
Lynn Welding’s metallographic laboratory is NACAP approved, Boeing Approved and Pratt and Whitney LCS approved. The laboratory undergoes regular internal and external audits to maintain its approvals and stay fully compliant to all customer and government requirements.
Our metallographic laboratory is furnished with highly specialized equipment that allows for metallurgical evaluation of resistance welded coupons. The facility has two identical stations that contain grinding, polishing, etching and evaluation capabilities.
“United Technologies Aerospace systems and the Management of this Program want to express a sincere thank you for your focused efforts to support our hardware needs. Working with Lynn Welding has been very rewarding and we really appreciate everything you have done for us."
Below are the Resistance welding approvals Lynn Welding currently holds, for more of our accreditations and approvals please visit our certifications page.
- CSMP039 Fusion weld-aluminum
- CSMP039 Fusion weld-steel
- CSMP039 Fusion weld-nickel alloys
- CSMP039 Fusion weld-titanium
- HS 3944 (Resistance Welding, HS 3944)
- HS 91 (Resistance Welding, HS 91)
- AWS D17.2 (Resistance Welding Certification for Aerospace)
- AMS-W-6858 (Resistance Welding of Aluminum, Magnesium, Nickel, & Titanium, Welding, Spot and Seam)
- Mil-W-6858 (Mil-Spec Resistance Welding)
- See more Collins Aerospace approvals
- 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)
- See more Boeing approvals
- 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)
- See more Raytheon Technologies approvals
- 36F (Welding: Resistance - Aluminum Alloy, MIL-W-6858, AMS-W-6858)
- 36G (Welding: Resistance - Magnesium Alloy, MIL-W-6858, AMS-W-6858)
- 36H (Welding: Resistance - Nickel and Cobalt Alloy, MIL-W-6858, AMS-W-6858)
- 36I (Welding: Resistance - Steel Alloy, MIL-W-6858, AMS-W-6858)
- 36J (Welding: Resistance - Titanium Alloy, MIL-W-6858, AMS-W-6858)
- 36K (Welding: Seam, MIL-W-6858, AMS-W-6858)
- See more Beechcraft approvals
- 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)
- See more Pratt & Whitney Canada approvals
- 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)
- See more Pratt & Whitney approvals