TIG welding stainless steel
ATA’s TIG welding stainless steel process delivers seamless, high-strength and corrosion-resistant welds, which perfectly retain the inherent mechanical properties and surface finish of Stainless steel sheet metal for long-term stable use in high-demand industrial scenarios.
Our TIG welding stainless steel technology is widely applied in precision equipment, pressure vessel and pipeline manufacturing, fully complying with international standards such as AWS D1.6, ASTM and ISO, ensuring strict control of weld quality, penetration and appearance consistency.
Service
ATA TIG welding stainless steel Service
TIG welding stainless steel (Tungsten Inert Gas Welding) is a precision arc welding process that uses a non-consumable tungsten electrode to create an arc, with inert gas protecting the weld pool from contamination, ensuring clean and high-quality welds on stainless steel materials.
The process is completed by adjusting welding current, arc voltage and gas flow, controlling the welding speed and electrode distance, and performing manual or automated welding operations to ensure uniform weld formation and reliable performance.
ATA provides one-stop TIG welding stainless steel services, covering material preparation, pre-welding treatment, precision welding, post-welding inspection and finishing, to meet the customized welding needs of different industries and customers.
Capability&Advantages
ATA TIG welding stainless steel Capability
TIG welding stainless steel is suitable for a variety of high-demand user scenarios, including the production of Stainless steel pressure vessel, stainless steel pipe fittings, precision medical equipment and aerospace components, adapting to the strict requirements of pharmaceutical, oil & gas, aerospace and marine industries.
ATA has strong capabilities in TIG welding stainless steel, with a team of certified professional welders and advanced TIG welding equipment that can handle stainless steel materials of different thicknesses (0.5mm-30mm) and types, adopting precision welding technology to ensure weld penetration up to 100%, no porosity or cracks, and the weld appearance meets the highest industry standards.
ATA TIG welding stainless steel standard
To meet the ATA TIG welding stainless steel standard, strict control of workpiece size, welding parameters, seam quality and material compatibility is required, which can be achieved by adopting high-precision TIG welding equipment, configuring suitable electrodes and shielding gas, optimizing welding current, voltage and speed, and conducting strict pre-welding inspection and post-welding treatment.
Standards | Description |
|---|---|
Workpiece thickness range | Cold-rolled stainless steel: 0.2-12mm; Hot-rolled stainless steel: 1.0-20mm; Thickness deviation ≤±0.15mm, uniform thickness to ensure welding uniformity |
Welding length range | Minimum welding length: 10mm; Maximum welding length: 6000mm; Welding length tolerance ±0.5mm, no uneven welding segment |
Welding width | Welding width: 2-15mm; Width tolerance ±0.2mm; Width uniformity ≤0.1mm per 100mm welding length, no sudden width change |
Welding height | Welding height: 0.5-5mm; Height tolerance ±0.15mm; No underfill or excessive reinforcement, consistent with workpiece surface |
Welding current requirement | Welding current: 10-200A; Adjust based on thickness: 10-50A for 0.2-1mm, 150-200A for 15-20mm; Current stability ≤±3A |
Welding voltage requirement | Welding voltage: 8-15V; Voltage matches current, deviation ≤±0.5V; Stable voltage to avoid arc instability |
Welding speed | Welding speed: 50-500mm/min; Adjust based on thickness and current: 50-150mm/min for 10-20mm, 300-500mm/min for 0.2-1mm |
Welding precision | Positioning precision ±0.03mm; Welding seam offset ≤0.1mm; No deviation or misalignment between welding seam and workpiece joint |
Welding seam quality | No cracks, pores, slag inclusion or incomplete fusion; Seam surface smooth, no burrs or indentations; Surface roughness Ra ≤6.3μm |
Applicable stainless steel grades | Suitable for 304, 316L, 321, 310S, 201, 430; No rust, oil stains or oxide scale on joint surface before welding |
Shielding gas requirement | Shielding gas: argon (purity ≥99.99%); Gas flow rate: 5-20L/min; Stable flow, no gas leakage to avoid oxidation |
Electrode requirement | Electrode material: tungsten (W20/WZ8); Electrode diameter: 0.8-3.2mm; Electrode tip smooth, no oxidation or wear |
Joint gap requirement | Joint gap: 0-2mm; Gap uniformity ≤0.1mm; For gap >1mm, fill with matching welding wire to ensure fusion |
Welding wire requirement | Welding wire material matches workpiece grade; Wire diameter: 0.8-2.4mm; Wire surface clean, no rust or oil stains |
Post-welding surface treatment | Remove welding slag and spatter; Polish welding seam to be flush with workpiece surface; Passivate to prevent post-welding oxidation |
Welding heat-affected zone | Heat-affected zone width ≤5mm; No obvious deformation or grain growth; Zone surface free of oxidation and cracks |
Welding perpendicularity | Perpendicularity deviation between welding seam and workpiece surface ≤0.1mm/m; No inclination or skew of the welding seam |
Thick plate welding requirement | For thickness >10mm, adopt multi-layer multi-pass welding; Interlayer temperature ≤150℃; Ensure full fusion between layers |
Material Selection for the Process
TIG welding stainless steel Material Selection
ATA’s TIG welding stainless steel process has excellent compatibility with various stainless steel materials, which can realize high-quality welding while maintaining the material’s corrosion resistance and structural strength, and optimize the welding process to reduce weld defects and improve production efficiency.
Stainless Steel Type | TIG Welding Advantage | Application Scope |
|---|---|---|
Easy welding, uniform weld, good corrosion resistance | Food equipment, daily hardware | |
High corrosion resistance, strong weld strength | Marine parts, chemical equipment | |
High strength, good weldability, no cracking | Pressure vessels, oil pipelines |
TIG welding stainless steel Quality Control
ATA adheres to the whole-process quality management concept in the TIG welding stainless steel process, from the incoming inspection of stainless steel materials to the final inspection of welded products, strictly implementing international industry standards to ensure that each batch of products meets customer design requirements; we use professional testing equipment and scientific testing methods to conduct comprehensive inspections on the welding quality, and the specific testing methods are as follows:
- Weld appearance inspection: Check the weld surface for porosity, cracks, undercut and incomplete penetration, ensuring that the weld is smooth, uniform and consistent with the design requirements.
- Non-destructive testing: Use ultrasonic testing and radiographic testing to detect internal weld defects, ensuring that the weld internal quality meets AWS D1.6 and ISO standards.
- TIG welding stainless steel performance test: Conduct tensile and hardness tests on the weld joint to verify that the mechanical properties of the weld meet the material’s inherent performance and service life requirements.
- Corrosion resistance test: For welded products used in harsh environments, conduct salt spray tests to ensure that the weld and base material have excellent corrosion resistance, meeting the application requirements.
Why Choose ATA TIG welding stainless steel
ATA’s TIG welding stainless steel service integrates professional welding technology, advanced equipment and thoughtful after-sales support, providing customers with high-quality, efficient and reliable welding solutions.
Industry Advantage
ATA has more than 10 years of experience in TIG welding stainless steel, deeply understands the welding needs of various industries, and has accumulated a large number of successful cases in Oil, Gas & Chemical Industry and Pharmaceutical & Biotechnology.
Equipment Advantage
We are equipped with imported automatic TIG welding machines and inert gas protection systems, which can realize high-precision, high-efficiency welding, reducing manual operation errors and ensuring weld consistency.
Service Advantage
Provide 24-hour technical consultation, customize welding solutions according to customer drawings, and provide after-sales maintenance and welding technology guidance for welded products.
ATA Stainless steel fabrication Center
ATA Stainless Steel fabrication: One-Stop Precision Solutions for Your Stainless Steel Needs.
Material Selection for the Process
TIG welding stainless steel Multi-industry Application Solutions
Oil, Gas & Chemical Industry: In the chemical industry, TIG welding stainless steel is used to weld Stainless steel reactor and chemical pipeline joints, ensuring the weld’s corrosion resistance to chemical media and the safe operation of equipment.
Pharmaceutical & Biotechnology: Applied to the welding of medical stainless steel instrument parts and stainless steel medicine cabinet components, the precise TIG welding stainless steel technology ensures the weld is seamless, sterile and easy to sterilize, meeting medical hygiene standards.
Shipbuilding & Offshore Engineering: Used to weld marine stainless steel pipelines and hull components, TIG welding stainless steel ensures the weld’s structural strength and seawater corrosion resistance, adapting to the harsh marine environment.
Aerospace & Defense: Applied to the welding of precision stainless steel components for aerospace equipment, TIG welding stainless steel ensures the weld’s high precision and structural stability, meeting the strict requirements of the aerospace industry.
Food & Beverage Industry: Used to weld Stainless steel mixing tank and food processing equipment joints, the welding process ensures the weld is smooth, no dead corners and easy to clean, meeting food safety standards.
TIG welding stainless steel FAQS
Q1: How can ATA’s TIG welding stainless steel process meet the customized welding requirements of different customers (such as weld size, position and strength)?
A1: ATA has a team of certified professional welders and process designers who can adjust welding parameters (current, voltage, gas flow) according to customer design drawings, and conduct pre-welding tests to optimize the welding process, ensuring that the welded products fully meet the customized requirements.
Q2: In mass production of TIG welding stainless steel, how does ATA ensure the consistency of weld quality and avoid batch defects?
A2: We adopt automatic TIG welding equipment and implement standardized welding operations; each batch of materials is subject to unified incoming inspection, the welding process is monitored in real time, and finished products are sampled and inspected according to international standards to ensure batch consistency and avoid weld defects.
Q3: For thin-walled stainless steel (less than 1mm), can ATA achieve precise TIG welding stainless steel and avoid material deformation?
A3: Yes, ATA is equipped with high-precision micro TIG welding machines, and adopts low-current welding technology and heat control measures to reduce the heat input during welding, effectively avoiding material deformation and burn-through, and ensuring the weld quality and material integrity.
Q4: How does ATA solve the problem of weld corrosion resistance in TIG welding stainless steel for products used in harsh environments?
A4: We select matching welding consumables according to the type of stainless steel, optimize the welding process to reduce weld grain growth, and conduct post-welding passivation treatment to enhance the corrosion resistance of the weld, ensuring that the welded products can stably operate in harsh environments such as high corrosion and high humidity.
Professional Custom TIG Welding Stainless Steel
ATA is your trusted professional manufacturer specializing in high-precision stainless steel fabrication, providing custom one-stop solutions for your projects.