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TELWIN SUPERIOR TIG 421 DC AQUA+TROLLEY: Masterly Precision and TIG DC Welding Power for Professionals.
Meet the TELWIN SUPERIOR TIG 421 DC AQUA+TROLLEY, an inverter welder that resets the standards of TIG welding with direct current (DC) and of MMA. Designed for the most demanding professionals, this powerful machine brings together advanced technology, unmatched output and the Italian engineering craft of the TELWIN brand. If you are looking for a solution that will handle the hardest welding jobs and give perfectly smooth and clean welds at the same time, you have just found your new partner at work.
Picture welding where every detail is under your full control. Thanks to advanced functions such as precise adjustment of the welding parameters, current pulsing (including high frequency pulse) and HF non-contact or LIFT contact arc ignition, the SUPERIOR TIG 421 DC lets you reach perfect results on varied materials: carbon steel, stainless steel, titanium, copper, nickel and their alloys. The integrated AQUA liquid cooling system guarantees the right torch temperature even during intensive, long work, removes the risk of overheating and raises operator comfort.
Mobility and ergonomics are further strengths of this set. The solid TROLLEY not only makes it easier to move the welder together with the cooling unit and the gas cylinder around the workshop or the building site, it also gives a stable working platform. The control panel, with a clear display and intuitive knobs, allows fast and precise setup of the machine, even in welding gloves. This is not only a tool, it is an investment in quality, output and reliability that will translate into faster completion of orders and higher profitability for your business.
The TELWIN SUPERIOR TIG 421 DC also brings intelligent solutions that support the welder. Functions such as Arc Force, Hot Start and Anti-Stick in MMA mode make arc ignition and electrode guidance easier and prevent the electrode from sticking. The machine also has thermal and overvoltage protections that keep it safe from damage and guarantee long, trouble free work. When you choose this model you choose proven technology that will meet the expectations of even the most demanding masters of welding and let you concentrate on what matters most, creating excellent joints.
Get to Know the Advanced Capabilities of the TELWIN SUPERIOR TIG 421 DC AQUA+TROLLEY
AQUA Technology: Liquid Cooling for Maximum Output
The AQUA liquid cooling system, integrated into the TELWIN SUPERIOR TIG 421 DC model, is the key to uninterrupted work at high currents and long welding cycles. The cooling unit lowers the temperature of the TIG welding torch efficiently, prevents it from overheating and extends the service life both of the torch itself and of its consumables, such as ceramic nozzles or collets.
For a professional welder this means above all greater working comfort, since the discomfort of a hot torch disappears, which allows longer concentration and more precise arc guidance. What is more, a stable torch temperature translates into stability of the welding parameters and higher weld quality. The AQUA system makes it possible to use the full 400A output, which is necessary when welding thick structural material or pipework, where continuity and high output are required. It is an investment in the reliability and the productivity of your welding station.
Advanced TIG Pulse: Full Control of the Weld Pool and the Heat Input
The TELWIN SUPERIOR TIG 421 DC offers advanced TIG pulsed current welding functions that open new possibilities of precise process control for the welder. Adjustment of the pulse frequency, the base current, the peak current and the duty ratio allows optimisation of the heat input into the material. This matters especially when welding thin sheet, where it keeps the risk of burn through and distortion low, and also when welding material sensitive to overheating, such as stainless steel or nickel alloys.
The EASY PULSE function simplifies setup by choosing the best pulse parameters automatically on the basis of the welding current that was set, which is ideal for a quick start of work. Advanced users can tune every parameter by hand to obtain ideal penetration, the right weld face shape and a good appearance. TIG pulsed welding also gives better control of the weld pool in constrained positions, which translates into welds of higher metallurgical quality and excellent appearance and reduces the need for time consuming finishing.
Intelligent MMA Functions: Arc Force, Hot Start, Anti-Stick for Perfect Welds
Although the TELWIN SUPERIOR TIG 421 DC is a master of TIG welding, its capabilities in the MMA method (welding with a stick electrode) are just as impressive, which makes it an unusually versatile tool. The machine is equipped with three key technologies that make the MMA welding process considerably easier and smoother:
Hot Start: Gives a short increase of the welding current at the moment of arc ignition. This makes it easier to strike the electrode, especially when welding on cold material or with electrodes that are hard to strike (basic ones for example). The result is a certain and fast start with no sticking.
Arc Force: Adjusts the welding current dynamically as the arc length shortens. When a drop of molten metal from the electrode passes into the weld pool, this function prevents the arc from fading and the electrode from sticking and secures a stable and smooth welding process even with a short arc, which is the key to good fusion.
Anti-Stick: Reduces the welding current to a minimum automatically if the electrode sticks to the material. This allows the electrode to be freed easily without damaging it (without it glowing red) and with no risk of damage to the welder.
Thanks to these functions MMA welding becomes simpler, more efficient and open even to people with less experience, while professionals will appreciate the stability of the process and the high quality of the welds obtained.
Mobility and Readiness for Work: the Set with the TROLLEY
The TELWIN SUPERIOR TIG 421 DC in the AQUA+TROLLEY configuration is a complete, mobile welding station ready to meet the challenges of work in various locations. The solid and ergonomically designed TROLLEY not only makes it easier to move the heavy machine together with the cooling unit and the gas cylinder, it also secures an organised and safe working place.
The trolley has a dedicated place for the shielding gas cylinder, shelves for accessories and holders for the leads, which keeps clutter and the risk of tripping low. Large, durable wheels (often with brakes) allow the set to be manoeuvred easily over uneven workshop floors or on the building site. For a professional this means time and effort saved in carrying and setting up the equipment and also better safety and ergonomics at work. With this solution the welder is always where it is needed, ready for immediate use.
Technical Specification
| Parameter | Value |
|---|---|
| Full model name | TELWIN SUPERIOR TIG 421 DC AQUA+TROLLEY |
| Catalogue number | 816133 |
| EAN code | 8004897997711 |
| Supply voltage | 3 x 400V 50/60Hz |
| Mains protection | 20 A |
| TIG DC welding current adjustment range | 5 - 400 A |
| MMA welding current adjustment range | 10 - 350 A |
| Maximum TIG current (40°C) | 400 A (duty cycle 40% for example) |
| Current at 60% TIG duty cycle (40°C) | ~300 A |
| Current at 100% TIG duty cycle (40°C) | ~250 A |
| Open circuit voltage | about 70 V DC |
| Maximum power draw | about 15 kVA |
| Power factor (cos φ) | 0.9 |
| MMA stick electrode diameter | 1.6 - 6.0 mm |
| Protection rating | IP23 |
| Cooling | Forced (fan) + AQUA liquid cooling unit |
| TIG arc ignition | Non-contact HF / contact LIFT |
| Insulation class | H |
Key Features and Benefits
- Strong 400A Welding Current with Liquid Cooling: This welder offers an impressive maximum welding current of 400A in the TIG DC method, which together with the efficient AQUA liquid cooling system for the torch allows long work on thick material with no risk of overheating. For a professional this means the ability to carry out the most demanding projects, to weld thick sections of stainless steel, structural steel or titanium while keeping high output and continuity of work, which translates into faster completion of orders and greater productivity.
- Advanced TIG DC Functions (Pulse, Bi-Level, Easy Pulse): The machine is equipped with advanced TIG process control functions, among them adjustable pulsed current (PULSE) and simplified pulse (EASY PULSE) for easier setup. The BI-LEVEL function is also available (switching between two welding current levels during work). This gives the welder full control of the weld pool, keeps thermal distortion low, especially on thin material, and allows welds of excellent structure and appearance, which is decisive in the food, chemical and aviation industries.
- Intelligent Arc Ignition (HF/LIFT) and Gas Control: The TELWIN SUPERIOR TIG 421 DC offers a choice of arc ignition method: non-contact by high frequency (HF) for a clean start with no contamination of the electrode and the material, or contact (LIFT) for work in environments sensitive to electromagnetic interference. Precise adjustment of the gas flow before and after welding (pre-gas, post-gas) secures the best shielding of the pool and the electrode, which translates into higher weld quality, lower consumable use and a longer service life for the tungsten electrode.
- MMA Versatility with Supporting Functions: Besides excellent TIG parameters, this welder is also a highly efficient machine for MMA welding with stick electrodes. Functions such as Arc Force (dynamic short circuit current control), Hot Start (easier electrode striking) and Anti-Stick (prevention of electrode sticking) make work considerably easier, even for less experienced welders. For a professional this means flexibility and the ability to switch quickly to the MMA method for assembly, structural or repair work while keeping the high quality of the joints.
- Complete Set with Trolley and Cooling Unit: The SUPERIOR TIG 421 DC is supplied in the AQUA version (integrated cooling unit) and with a dedicated TROLLEY. This ready to work welding station secures mobility, convenient storage of the gas cylinder and the accessories and stability of the machine. For the user this is time and money saved on putting separate components together and also an ergonomic and organised working place, which raises safety and efficiency.
- Microprocessor Control and Program Memory: An advanced control panel with a digital display, based on microprocessor technology, allows precise setting of all welding parameters. The option of storing your own welding programs (often found in this class of Telwin machines) speeds up setup on repeated jobs. For a professional this guarantees repeatability of the parameters, a shorter setup time and the ability to adapt the machine quickly to the specific requirements of a welding application.
- THINSPOT - Precise Spot Welding: The machine is equipped with the innovative THINSPOT spot welding function, which allows fast and precise joining of thin sheet with a minimum of heat input. It is the right solution for sheet metal work, the production of parts from thin stainless steel and other applications that call for gentle and accurate joining. The professional gains a tool for making good looking and strong spot welds and widens the range of services on offer.
Product Applications
- Production and assembly of structures in stainless and acid resistant steel (tanks, pipework, industrial installations)
- High quality welding of carbon steel parts in the machine building and shipbuilding industries
- Precise welding work on pipework and installations in the chemical, food and pharmaceutical industries
- Repair and production of components in titanium, copper, nickel and their alloys in the aviation and power sectors
- Advanced workshop and service work that calls for the highest TIG DC weld quality
- Assembly and structural work on site with the MMA method
- Reconditioning and hardfacing of machine parts
Contents of the Set
- TELWIN SUPERIOR TIG 421 DC welder (816133)
- Integrated AQUA liquid cooling unit (part of model 816133)
- TROLLEY transport cart (part of model 816133)
- Earth cable with clamp
- Gas pressure regulator with two gauges (may be an option, but is often in professional sets)
- Gas hose
- Starter set of TIG torch consumables (electrodes, nozzles, collets, may be in the set)
- Operating manual
Summary: TELWIN SUPERIOR TIG 421 DC AQUA+TROLLEY - Your Best Investment
The TELWIN SUPERIOR TIG 421 DC AQUA+TROLLEY is not only a welder, it is your reliable partner on the way to welding perfection. The strong 400A output, the advanced TIG DC functions with pulse, the efficient liquid cooling and the complete equipment with the trolley make this set the right choice for professionals who accept no compromises. Raise the quality of your work, increase output and gain an advantage over the competition. Invest in TELWIN technology and feel the difference that Italian precision and innovation make. Contact us today to learn more and to join the circle of welding masters.
Catalogue number: 816133
EAN code: 8004897997711
