Custom TIG welding Services for Reliable Automatic & Orbital Applications ISO 9001

Precision gas tungsten arc welding (GTAW) for thin-section metals, delivering cosmetic beads and X-ray-quality joints. Ideal for aerospace, medical, and food-grade components. Heat-affected zone minimized. Meets AWS D1.2, ASME Section IX, and ISO 15614-1 standards. (78 words)

What Is TIG Welding Services?

TIG welding services uses a non-consumable tungsten electrode and separate filler rod, shielded by argon or helium. Processes include manual, orbital, and automated pulsed TIG. Achieves superior control on thin wall (down to 0.020 in. / 0.5 mm) aluminum, stainless, and exotic alloys with no spatter or slag.

Types of TIG Welding Services:

• Manual TIG – Full operator control; ideal for prototypes, repairs, and complex geometry joints.
• Orbital TIG (Autogenous) – Machine guided, no filler; used for high-purity tube welding in pharmaceutical and semiconductor gas lines.
• Pulsed TIG – Alternating high/low current; reduces heat input by 30–40%; minimizes distortion on thin-gauge sheets (≤0.062 in.).
• Micro-TIG – Current below 20 A; welds wires as fine as 0.005 in. (0.13 mm) diameter for medical and electronic sensors.

Surface Finishes for TIG Welded Parts:

• Mill scale removal (mechanical) – Grinding or flap disc; Ra < 2.0 µm for subsequent coating.
• Pickling & passivation (ASTM A967) – Removes free iron and heat tint on stainless steel; restores chromium oxide layer.
• Electropolishing – Ra down to 0.25 µm; reduces micro-crevices, ideal for cleanroom and biopharm services.
• Bead blasting (80–120 grit) – Uniform matte finish, blends weld zone into parent metal.

TIG Welding Services of Materials:

• Aluminum (6061, 5052, 5083) – Filler ER4043 or ER5356; AC balance required for oxide cleaning.
• Stainless steel (304, 316, 316L) – Filler ER308L or ER316L; purge gas mandatory for root penetration.
• Titanium (Grade 2, Grade 5) – Back-purging with argon to prevent embrittlement; color control per AWS A5.16.
• Nickel alloys (Inconel 625, Hastelloy C-276) – High-temperature service up to 980°C; filler matching base metal.

Application Fields:

• Aerospace: Thin-wall ducting, hydraulic lines – per AMS 2694
• Semiconductor: Ultra-high-purity gas manifolds, leak rate ≤1×10⁻⁹ sccm He
• Medical: Stainless instrument trays, titanium implants per ISO 13485
• Food & dairy: 304/316L tanks, crevice-free welds per 3-A Sanitary Standard
• Automotive: Intercooler piping, aluminum radiators

Product Advantages of TIG Welding Services:

• Heat input control – Reduces distortion by ~50% vs. MIG on 0.062 in. aluminum sheet.
• Weld integrity – Radiographic testing (RT) can achieve Class B per ASME Section VIII, no porosity >0.010 in.
• Material versatility – Welds dissimilar metals (e.g., stainless to nickel alloys) with proper filler selection.
• No spatter – Zero post-weld cleaning of spatter or slag, lowering labor cost by 15–20%.

Polestar Case Examples:

• Semiconductor Gas Panel (316L) – Orbital TIG with autogenous weld; helium leak tested at 1.5×10⁻⁹ sccm; 100% pass rate on 342 tube joints.
• Aerospace Aluminum Duct (6061-T6) – Pulsed TIG, 0.040 in. wall; heat tint removed by passivation; dye penetrant no cracks after 2,000 pressure cycles.
• Medical Instrument Tray (304) – Manual TIG with back-purge; electropolished to Ra 0.4 µm; passed 500-hour salt spray (ASTM B117) without pitting.

Why Choose Our TIG Welding Services?

• Certifications – AWS D17.1 (aerospace), ASME Section IX (pressure vessels), and ISO 9001.
• Traceability – Weld logs, filler material certs (EN 10204 3.1), and operator qualification records archived 20 years.
• Inspection – In-house visual (VT), dye penetrant (PT), and X-ray (RT) with 24‑hour report turnaround.
• Fast turnaround – 3‑5 days for prototypes (≤10 parts); 10‑12 days for production runs (100+ assemblies).

Frequently Asked Questions (FAQs):

Q: What is the minimum wall thickness you can TIG welding services without burn-through?

A: 0.020 in. (0.5 mm) on stainless steel and titanium with pulsed TIG and copper backup. For aluminum 6061, minimum reliable thickness is 0.040 in. (1.0 mm) using AC balance at 70% electrode negative.

Q: Do you provide helium leak testing on welded parts?

A: Yes. Calibrated mass spectrometer leak detector, sensitivity to 1×10⁻⁹ std cm³/s He (per ASTM E1603). Report includes leak rate, test pressure (up to 150 psig), and part serialization.