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TIG welding—also called gas tungsten arc welding (GTAW)—uses a non-consumable tungsten electrode to create an arc while shielding gas, usually argon, protects the weld area. Add filler rod by hand when the joint needs it. The process offers fine control and clean-looking welds, especially on thin or appearance-critical work, but it is slower and takes practice to coordinate.
What is TIG welding?
TIG stands for tungsten inert gas; the process is formally called gas tungsten arc welding, or GTAW. The tungsten electrode carries the arc but is not intended to become part of the weld. A separate filler rod is added when needed, while inert shielding gas protects the hot metal and electrode from atmospheric contamination. Some joints can be welded without added filler.
The operator typically holds the torch in one hand and feeds filler with the other. A foot pedal or compatible torch-mounted control can adjust current during welding. The setup also includes a work clamp to complete the electrical circuit.
How does a TIG welder work?
The power source sends current through the torch and tungsten to establish an arc at the base metal. The arc melts the workpiece to form a puddle; the welder moves the torch along the joint and adds filler rod as the joint requires. Shielding gas flows through the torch cup to cover the electrode and weld pool.
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- Large LED Display: Features a large LED screen for enhanced visibility and a clear display of welding parameters and settings. Its intuitive interface ensures effortless operation, enabling precise welding of diverse metals
- Easy to use: Easy Start with Hot Start ensures stable, spatter-free ignition and prevents sticking. Auto Memory function automatically saves your settings and recovers them after power-off.Weighing only 4.85kg(10.7lb), it's easy to carry and store, whether in the workshop or on the go
- More Powerful: The TIG welder delivers up to 200 amps, meeting the needs of both hobbyists and professionals—sufficient for versatile DIY projects and extended professional use. It features auto-sensing dual voltage input (110V/220V) for plug-and-play operation in home outlets and workshops, with no manual switching. Equipped with High-Frequency non-touch arc starting (HF Start), it ensures reliable ignition and stable arc performance for consistent, high-quality welds
- 3-IN-1 Tig Welder: Combines STICK (MMA), DC TIG, and PULSE TIG. Stick mode features HOT START, ARC FORCE, and ANTI-STICK for stable, versatile welding. DC TIG features HF arc ignition and 2T/4T/spot operation with adjustable settings, ideal for stainless and mild steel. Pulse TIG offers independent control over pulse frequency, duty cycle, and current, perfect for thin materials and non-ferrous metals. One welding machine meets all needs, from fabrication and auto repair to creative projects and outdoor repairs
- Foot Pedal Interface: 5 pin foot pedal interface reserved, you can connect a 5 pin foot pedal to turn on/off and adjust the current
A typical torch assembly includes the tungsten, a collet that grips it, a collet body, a ceramic cup that directs gas, and a back cap. The broader system commonly includes a gas cylinder, regulator and hose, torch, work clamp, and often a pedal or other current control. Confirm that the components and connections are compatible with the power source.
Where TIG welding is used
TIG is used on materials including steel, stainless steel, chromoly, aluminum, nickel alloys, magnesium, copper, brass, bronze, and gold. Miller’s examples include bike frames, door handles, automotive parts, aerospace work, and custom automotive projects. Its first-welder guidance highlights thin alloy steel, stainless steel, and nonferrous metals such as aluminum, magnesium, and copper alloys. These are examples, not a guarantee that every alloy, thickness, joint, or regulated application is suitable.
Rank #2
- Comes with lift TIG torch, E6013 welding rods and welding gloves, capable of either Stick welding or Lift TIG welding.
- Equipped with VRD/Hot Start/ARC Force multiple welding functions to makes the arc striking easier and avoids rods sticking. Note：In case of weak arc, recommended to adjust the value to the maximum.
- Powered by standard 110V household current.
- Compared with other traditional displays，intelligent LCD display can see the data more clearly.
- Compact with adjustable shoulder strap,is convenient to carry between job sites or use.
The process is especially useful when an operator needs precise puddle control or a clean, attractive finish. It may be a poor fit when production speed, high deposition, thick material, or windy field conditions dominate the job. Miller describes stick and self-shielded flux-cored welding as more forgiving on dirty material or in wind; the best process depends on the work and conditions.
Choose current mode and machine around the material
Material is a starting point for selecting current mode, but the machine manual and job procedure govern actual settings. Miller’s general beginner guidance maps aluminum to AC and steel and steel alloys to DC/DCEN. It says a DC-only TIG machine can suit steel or stainless, while AC/DC gives more flexibility for aluminum and mixed-material work.
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- READY OUT OF THE BOX: Start welding immediately! It masterfully handles Gasless Flux Core MIG, Stick, and Lift TIG (Extra Lift TIG torch required). This budget-friendly 3-in-1 machine includes extra E71T-GS .030''&.035'' flux core wires, known for its smooth arc and high feedability. Say goodbye to heavy shielding gas cylinders—perfect for outdoor, windy, or all-position welding.
- SAY GOODBYE TO BURN-THROUGHS: Unlike rigid auto-welders, our upgraded Synergic Control automatically matches the recommended voltage to your wire feed speed, making it foolproof for beginners. Plus, the ±3V voltage micro-adjustment allows seasoned professionals to fine-tune the arc. This precise control is the ultimate solution for tackling thin auto body panels without burning through.
- CRYSTAL-CLEAR LED DISPLAY: Never squint at your welder's settings again. Our advanced, oversized digital display revolutionizes the visual interface, offering enhanced clarity even in bright outdoor environments. Monitor real-time current during operation for precise control over every weld.
- ROBUST POWER YET ULTRA-PORTABLE: Weighing only 11.4 lbs with a convenient carrying handle, it's the perfect on-the-go companion. Delivering a robust 135A output (110V), it effortlessly tackles mild steel up to 3/32" (2.5mm) thick. Engineered with an upgraded drive system for smooth wire feeding to prevent annoying jams.
- SAFETY PRIORITIZED & STABLE ARC: The machine features comprehensive built-in safeguards, including robust protections against over-current, over-load, and over-heating, guaranteeing unparalleled user safety, device longevity, and fewer circuit interruptions.
Before choosing a power source, consider:
- Material and thickness: Check the machine’s supported processes and ranges against the metals and thicknesses you expect to weld.
- Current control: Thin stock calls for fine low-current control; thicker work may require greater peak amperage.
- Input power: Confirm available single- or three-phase supply at the work site and match it to the machine’s requirements.
- Portability and use: Account for transport, work location, and how frequently and intensively the machine will be used.
- Controls and accessories: Check whether a pedal or torch control is included or compatible, and what torch and consumables the setup requires.
Match tungsten, filler, and preparation to the job
Tungsten selection and grinding
Tungsten choice depends on material, thickness, current mode, and the power source. Miller’s basics guide describes 2% ceriated (gray) as a versatile AC/DC option and 2% lanthanated (blue) as useful for some DC precision work. It describes pure tungsten as a legacy transformer-AC option and cautions that modern inverters may start poorly with it. A Miller owner’s manual indexed in September 2024 also identifies 2% ceriated as an all-around AC/DC type and 1.5–2% lanthanated for low-amp starts. Follow the recommendations for the exact machine rather than treating an electrode type as universal.
Miller recommends grinding longitudinally on a wheel dedicated to tungsten to reduce contamination. Its example guide gives a point length of about 2.5 times the electrode diameter; that is an equipment-specific example, not a universal geometry. Keep the electrode from contacting the work or puddle. If it does, stop and regrind it on a suitable dedicated wheel.
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- POWERFUL 7-IN-1 TIG WELDER AC/DC: The Welder is capable of welding with DC TIG / DC Pulse TIG / AC TIG / AC Pulse TIG / AC Pulse TIG Square / AC Pulse TIG Triangular / STICK /SPOT TIG Methods. AC TIG is used in finesse welding various aluminum alloys, magnesium alloys, and other non-ferrous metals. DC TIG provides low-temperature control. You need precise welding for various types of steel: stainless steel, carbon steel, copper.
- LARGE LED DISPLAY AlUMINUM TIG WELDER : ARCCAPTAIN Tig welder can weld 0.5MM-5MM (0.02"–0.20") aluminum and 0.5MM-10MM (0.02"–0.39") metals. Enjoy enhanced visibility with the TIG200PACDC large LED screen, providing clear display of welding parameters, settings, this screen ensures effortless operation, providing precise control over your welds in any environment.
- PULSE & SQUARE & TRIANGULAR WAVEFORM: The ac/dc TIG welder is equipped to prevent the burning of materials and minimize material distortion from excessive heat input, as well as the triangular wave reduces the heat input effectively, so the weld forms rapidly. It is easy for thin metal welding; Square Wave can switch the polarity quickly, dynamic arc for a stable weld pool, a strong ability to clean aluminum oxide film, so it provides more precise welding on aluminum or aluminum alloy.
- DIGITAL WEDLING PARAMETER SET: MCU Digital control system makes this machine more reliable and stable. Parameters such as Pre-flow, Initial current,Up-slope, Peak current, Base current, Down-slope,Crater current, Post-flow, Pulse duty, AC frequency, AC balance, Pulse frequency,are easily adjustable,and 2T/4T/Spot welding TIG torch control and foot pedal remote control (not included) methods which improve good welding performance.
- 3 YEARS QUALITY SERVICE : We have professional personnel who can provide you with answer. The user-friendly and simple interface enables the operators to set it up easily and efficiently, data and dynamic output current will be displayed immediately. Spike withstanding IGBT saves space and weight. It's only 12 kg (26.5lb) . No heavy carrying! Note: DON'T power on until the screen turns off and the fan stops working!
Filler and cleanliness
Choose filler compatible with the base-metal alloy and the joint requirements. Clean the base metal and filler before welding: dirt, oil, and moisture can compromise results. Check fittings and hoses for leaks, purge gas lines as appropriate, and keep shielding consistent. Drafts, an obstructed torch angle, or unsuitable gas flow can disrupt coverage and contribute to porosity, discoloration, or an unstable arc.
Miller lists 15–20 cubic feet per hour (cfh) as troubleshooting guidance, not as a universal flow setting. The right flow depends on the cup, gas lens, joint, and shop conditions; follow the machine and torch guidance for the setup in use.
Best Value
- HIGH FREQUENCY ARC STARTING: The TIG welder features non-contact arc initiation that help start arc easily and reduces tungsten and material consumption. Advanced MCU and IGBT Inverter technology digital control system to deliver a flawless weld, making spatter and post-weld cleanup almost non-existent.
- HF TIG/STICK 2 in 1 WELDER: Tig welding machine can provide up to 200 amps, that always make precise for stainless and mild steel. Stick/MMA (Hot start, Arc-force, Anti-stick) welding capability for outdoor work or thicker materials. Powerful and easy-to-handle, perfect for entry level welders.
- POST GAS & DOWN-SLOPE AND 2T/4T: Post Gas time can be setting 1-10s, when you switch off the tig torch, it will continue to blow gas to protect the weld and cool down the torch head and prevent the torch accessories damage. Down-slope time also be setting 0-10s, it will protect machine.2T/4T provide you personalized choices, 4T is suitable for long term welding. Unique Large LED screen design, provides you with accurate data display and makes you read easier.
- SAFETY & FAN WORKS as NEEDED: Cooling fan system that runs only when the welder machine needed so no constant buzzing sounds. We take care of our customer’s safety based on VRD, over current/over voltage/over current/over-load/overheating protection function. Lightweight as less than 12lb allows the user to easily move from location to location by handle or shoulder strap(included).
- WARM SERVICE & 2 YEAR QUALITY SERVICE: We have professional personnel who can provide you with answer. Every single of our welder machines passed various authoritative Laboratory tests in simulating extremely harsh environments before leaving our ARCCAPTAIN factory that conforms to the high standards. Note: DON'T power on until the screen turns off and the fan stops working!
Technique: control the puddle and coordinate both hands
TIG requires coordination: maintain the torch position and arc while controlling travel and adding filler as needed. Miller’s beginner tips use a torch angle of 70–80 degrees, a short arc, and a shallow filler-rod angle with small dabs into the puddle as practice cues. These are starting points for learning, not code-approved procedure instructions. Practice on clean, representative material and use the settings and procedures appropriate to the job.
Use current control deliberately. A foot or fingertip control can vary amperage as the weld progresses; Miller notes that a foot control can soften starts and stops. Pulsing can reduce heat input and the heat-affected zone in some applications, but it is not a substitute for suitable settings or technique.
Common beginner problems and what to check
- Contaminated tungsten: Work or puddle contact can contaminate the electrode. Stop and regrind it on a suitable dedicated wheel.
- Burn-through on thin stock: Excess heat or dwelling can open a hole. Reassess current and travel rather than continuing with an oversized puddle.
- Porosity or a dull-looking weld: Check cleanliness, moisture, gas-line purging, fittings, leaks, flow, drafts, and whether the torch is maintaining shielding coverage.
- Unstable arc or arc wander: Check polarity for DC work, tungsten preparation and contamination, arc length, gas coverage, the work clamp, and cable connections.
Safety and ventilation belong in the setup
Read the welding machine’s owner’s manual and precautionary labels before use. Miller identifies a welding helmet, leather gloves, protective jacket or sleeves, and shoes as appropriate protective gear for TIG. Assess fumes and other hazards for the specific base metal, coatings, consumables, and work setting; ventilation needs cannot be determined from the process name alone.
OSHA’s welding fact-sheet summary identifies TIG/GTAW as a non-consumable-electrode process with externally supplied inert shielding, and notes portable or flexible exhaust as a way to draw fumes and gases away from the welder. Follow applicable local requirements and the equipment manufacturer’s instructions for the actual worksite.
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