Aluminum Heat Treating

Lynch Bros. MFG. CO. provides precision aluminum heat-treating solutions designed to strengthen material performance for aerospace, defense, and industrial applications. Our controlled heat-treat processes improve hardness, durability, and dimensional stability while maintaining the tight tolerances required for mission-critical components. Whether preparing aluminum for machining or finalizing part performance, we ensure consistent, repeatable results across every production run.

Precision Sheet Metal Fabrication

With over 60 years of experience Lynch Brothers is a leader in manufacturing aerospace sheet metal components and assemblies. We fabricate complex components and assemblies in our sheet metal department, incorporating machined parts and welding into the assemblies when required.

Our ability to design and plan the manufacturing processes required in complex assemblies, along with having highly talented people, sets us apart from all other sheet metal shops.

Product Samples

Tube Bending

An area of specialty for Lynch Brothers is the manufacturing of close tolerance tubing assemblies. We are renowned in the aerospace industry for precision tube bending and welding of all aerospace materials up to 2” diameter.

Critical welded tubing assemblies are completely tested for conformance to rigorous specifications on test fixtures that we design.

By designing and controlling all of the process steps in making these tubing assemblies, and our experienced craftsmen, we ensure exceptional quality and on time delivery every time.

Product Samples

Machining

Lynch Bros. Mfg. Co. delivers precision CNC machining solutions for aerospace, defense, medical, and high-performance industrial applications. Our machining operations are engineered to support tight tolerances, complex geometries, and repeatable results—from prototype development through full-rate production.

Our machining department is equipped with advanced 3-, 4-, and 5-axis CNC capabilities, supported by experienced machinists, programmers, and manufacturing engineers. We machine a broad range of aerospace-grade materials, including aluminum, stainless steel, titanium, nickel alloys, brass, bronze, and complex materials such as Inconel, Monel, Hastelloy, and TZM.

Process stability, tooling control, and in-process inspection are integral to our workflow. These disciplines allow us to maintain consistent part quality, predictable lead times, and reliable production scaling while meeting the rigorous requirements of mission-critical programs.Lynch Bros. combines modern CNC technology with disciplined process engineering, quality systems, and decades of hands-on expertise—delivering machined components customers can trust in the most demanding environments.

Product Samples

Aluminum Heat Treating

Heat treating aerospace aluminum components properly requires unique attention. At our NADCAP accredited facility in Phoenix Arizona, we have enhanced our manufacturing scope to better serve our customers, providing faster overall lead times as a one-stop-shop.

Our system is designed to perform a wide variety of aerospace aluminum heat treating applications; solution heat-treating, annealing, and aging.

Our dual chamber oven systems have a chamber size of: 24″ wide by 16″ tall by 48″ deep and are operated. by highly trained and competent individuals at the

Product Samples

Welding & Brazing

Lynch Brothers is proud to be a leader in aerospace welding and brazing. We have, and will always continue to deliver excellent quality on time to our customers. Our success is enabled by the strong support from our experienced tooling department as they can design and build any welding / brazing fixture (simple or complex).

TIG Welding
Projection Welding
Resistance Welding
Orbital Welding
Spot Welding
Brazing (Steel & Aluminum)

Lynch Brothers welding department is NADCAP approved in:

Integral to our extensive welding department is our computer controlled AMI Orbital Welder, which allows us to produce a continuous number of identical welds and eliminate errors or defects. Tubes of 1/16″ to 2″ in diameter can all be welded.

Enhanced by the addition of the Weld Computer Multi-Variable Adaptive Control® and monitoring system, our Resistance Welding line can produce computer controlled welds that are exactly right each time and in many cases we can eliminate the need to run weld coupons and testing.