Resistance Welding

Resistance Spot and Seam Welding

Lynn Welding provides Nadcap accredited resistance welding services to its national and international customers.

Resistance welding: Lynn Welding provides resistance welding services to many of its customers. Lynn Welding 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. 

What is Resistance Welding: Resistance welding consists of the joining of two or more pieces of metal by the application of heat, electricity and pressure. Resistance welding embraces that branch of welding art in which the welding heat in the parts to be welded is generated by the resistance offered by these parts to 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.

Common Material Types for Resistance Welding Processes

  • Aluminum Resistance Welding
  • Stainless Steel Resistance Welding
  • Titanium Resistance Welding
  • Inconel Resistance Welding
  • and most other metals

Types of resistance welding that we perform:

Spot Welding: is the most widely used form of resistance welding. This type of welding is done with electrodes which are held essentially stationary while the weld is being made. We are NADCAP accredited for the resistance spot welding procedure.

Seam Welding: is the process of making a series of overlapping welds by using two rotating wheel electrodes without opening the electrodes between spots. This type of weld is air and liquid tight. Our NADCAP certification also allows us to perform this resistance seam welding procedure for the aerospace and defense industries.

Stitch Welding: is 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.

The Weld Nugget: the weld nugget is the area in the resistance weld that actually joins the two pieces of metal together. The weld nugget is essentially the exact point where the two pieces of metal melted; when under heat and pressure and then cooled to form one piece. Our resistance department has the experience to control the nugget size to our customer's specification. Our resistance welding department is one of the most respected in the aviation industry; our experience and understanding of the fundamental laws of resistance welding allow us to maintain tight tolerance control required by the aviation industry. 

 

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Lynn Welding's Resistance Welding Approvals


Bell Helicopter

Bell Helicopter

Lynn Welding is Bell Helicopter approved for Resistance Welding and Fusion Welding processes, and preparation of metals.

Bell Helicopter Approved Resistance Welding


Gulfstream

Gulfstream

All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)

Gulfstream Approved Resistance Welding


Raytheon

Raytheon

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 Resistance Welding


Pratt & Whitney Canada

Pratt & Whitney

Lynn Welding is a LCS Approved Welding Facility for Fusion Welding, Resistance Welding, and Tack Welding.

Pratt & Whitney Approved Resistance Welding


Northrop Grumman

Northrop Grumman

Approved by Northrop Grumman for Fusion Welding & Resistance Welding. All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)

Northrop Grumman Approved Resistance Welding


Hawker Beechcraft

General Dynamics

Lynn Welding is approved by General Dynamics for Fusion Welding, Resistance Welding, Spot, Seam and Stitch

General Dynamics Certified Resistance Spot Welding


Hawker Beechcraft

Rolls-Royce

We are Rolls Royce Corp. Sub Tier Supplier (RRU6) for Fusion Welding and Resistance Welding, Spot and Seam

Rolls-Royce Certified Resistance Spot Welding


Hawker Beechcraft

Hawker Beechcraft

We are an approved Hawker Beechcraft welder and fabricator for Fusion Welding and Resistance Welding, Spot and Seam

Hawker Beechcraft Approved Resistance Welding


General Electric

General Electric

Lynn Welding holds a certification from GE Aviation for Fusion Welding, Brazing, & Resistance Welding.

General Electric Approved Resistance Welding


United Launch Alliance

United Launch Alliance

United Launch Alliance welding certifications. All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)

United Launch Alliance Approved Resistance Welding


United Launch Alliance

Augusta Westland

Approved by Agusta Westland for Resistance Welding, Spot, Seam, Stitch as well as Fusion Welding processes.

Augusta Westland Approved Resistance Welding


Boeing

Boeing

Lynn Welding holds a certification from Boeing for Fusion Welding & Resistance Welding. All Procedures are GTAW-MA (Gas Tungsten Arc Weld-Manual)

Boeing Approved Resistance Welding


Pratt & Whitney

Pratt & Whitney Canada

Lynn Welding is a Pratt & Whitney Canada Approved Welding Facility for Fusion Welding, Resistance Welding, and Tack Welding.

Pratt & Whitney Canada Approved Resistance Welding


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75 Rockwell Road
Newington, CT, 06111

Phone: 860.667.4400
Email: sales@lynnwelding.com