AS9100 • ISO 9001 • ITAR REGISTERED
Main: (860) 410-1801
Fabtron Precision Fabrications
CERTIFIED AEROSPACE FUSION • AWS D17.1 STANDARDS

AWS D17.1 Certified Aerospace Fusion Welding Engineering

Precision fusion welding for flight-critical airframe brackets, avionics enclosures, and naval structural assemblies. Certified manual GTAW (TIG) stations with calibrated pulse shaping and inert trailing shields in Plainville, CT.

Welding Code AWS D17.1 Class A, B, & C
Inspection Gate ASNT LEVEL II Visual & PT Testing
Shielding Gas 99.999% ARGON Trailing Purge Shields
Alloy Matrix 6061 • 316L • TI Full Heat Control
Fast-Track CAD Intake → View Machine Specifications Direct: (860) 410-1801
AEROSPACE FUSION METALLURGY

Class A & Class B Aerospace Fusion Welding Controls

Aerospace fusion welding demands strict control over heat input, puddle fluid dynamics, and atmospheric contamination. Fabtron combines advanced Miller Dynasty 350 AC/DC square-wave TIG power sources with certified operators working to approved Welding Procedure Specifications (WPS).

Class A: Flight Critical

Structural Flight Brackets

Weldments where single weld failure would cause catastrophic loss of airframe or human life. Undergoes 100% visual inspection (VT) and certified fluorescent liquid penetrant inspection (PT) with zero allowable crack or lack-of-fusion defects.

Class B: Semi-Critical

Avionics & Radar Chassis

Flight electronics housings and mounting trays where failure reduces operational capability without loss of aircraft. Monitored for precise bead width, penetration, undercut limits, and thermal distortion control.

Class C: Non-Critical

Ground Support Enclosures

Cabin hardware, ducting, and ground test support consoles. Engineered for maximum cost-effectiveness while preserving flawless aesthetic appearance and structural rigidity.

Base Alloy Qualified Filler Wire Shielding & Back-Purge Pre/Post Heat Treatment Inspection Standard
6061-T6 Aluminum ER4043 / ER5356 100% UHP Argon (99.999%) Preheat < 250°F; optional post-weld artificial aging to T6 AWS D17.1 Class A VT/PT
304L / 316L Stainless ER308L / ER316L Argon trailing cup + nitrogen purge Interpass temp < 300°F to prevent sensitization AWS D17.1 Class B / ASTM A380 Passivation
4130 Chromoly Steel ER70S-2 / ER80S-D2 100% Argon Preheat 400°F; slow cooling wrap; stress relief Magnetic Particle (MT) / VT
TECHNICAL SPECIFICATIONS & COMPLIANCE

Frequently Asked Engineering Questions

Detailed answers regarding our Plainville facility capabilities, material certifications, testing protocols, and defense contract compliance.

Q: What testing and non-destructive examination (NDE) methods do you offer?

Our quality team performs in-house certified Visual Testing (VT) to AWS D17.1 criteria and Liquid Penetrant Testing (PT) according to ASTM E1417. For Class A flight hardware requiring Radiographic Testing (RT) or Ultrasonic Testing (UT), we coordinate with NADCAP-accredited testing laboratories.

Q: How do you control weld distortion on thin-gauge avionics chassis?

We utilize custom-machined internal aluminum chill blocks, precision clamping fixtures built on our Milltronics CNC mill, and pulsed AC square-wave TIG arc control to restrict the Heat-Affected Zone (HAZ) to fractions of a millimeter.

DIRECT EXECUTIVE ENGINEERING CONSULTATION

Ready to Discuss Your Fabrication Requirements?

Speak directly with Garret Maino and our Plainville manufacturing engineering staff. Upload drawings for immediate DFM analysis and quotation.

Submit CAD Drawings → Call Plant: (860) 410-1801