During tacking with TAC, a TIG pulsed arc causes the liquid weld pool to begin moving. This leads to accelerated merging of the elements and therefore to a shorter tacking process.
Tacking refers to the joining of the components prior to the actual welding process.
In tandem welding, two completely isolated wire electrodes are melted in a welding torch and a common weld pool. The process allows a particularly high deposition rate, which can be converted to welding speed or volume filling. This welding process is known at Fronius under the brand name TWIN.
Temper colors are superficial, bright colorings on metals, generally caused by thermal heat input and oxidation. These can be avoided by using various forming and shielding gases.
Thermal conductivity is a material value that describes how well a material conducts heat. Materials with high thermal conductivity are difficult to weld and need a special welding start treatment (e.g., aluminum) or require a high preheating temperature (e.g., copper).
Thermal joining processes
Thermal joining processes refer to the connecting of materials by introducing heat and/or using force. They include press welding and fusion welding.
This is TIG welding using alternating current, whereby the polarity of the electrode changes quickly between positive and negative. It is mainly used in aluminum welding.
TIG Comfort Stop
Stopping the welding process without a torch trigger by briefly lifting and lowering the electrode.
TIG contact ignition
With conventional TIG contact ignition, the tungsten electrode is lifted off the workpiece. The preset welding start sequence then takes place.
TIG welding with direct current, where the polarity of the electrode is negative throughout the entire welding process. In exceptional cases, DC plus can also be used.
TIG overlay welding
Tungsten inert gas overlay welding is universally applicable and is ideal for surfacing high-alloy metals and steels. The welding process provides high-quality surfaces that are clean and exact, with little spatter.
TIG touchless ignition (HF ignition)
In TIG welding, the arc can be ignited touchlessly. Here a high-voltage source is used that is temporarily connected with high frequency and low power.
Tungsten inert gas welding is a shielding gas welding process. Here the arc burns between a non-consumable tungsten electrode and the workpiece.
Find out more about TIG welding
TIME stands for Transferred Ionized Molten Energy. The TIME welding process is synonymous with MAG high performance welding with a wire.
With Time Twin, two digital power sources that can be controlled separately work in a single gas nozzle and in a common weld pool. Both wire electrodes are completely isolated. This shortens cycle times and increases weld quality and cost effectiveness in high-performance welding.
This is the technical term for the gap between two sheets in the longitudinal direction and/or the height of the plates.
Torch to workpiece distance
The torch to workpiece distance is the distance between the gas nozzle and workpiece. To achieve optimum results, the correct distance must be chosen and remain constant during welding.
Torch trigger logic
Two alternative operating modes can be set: 2-step and 4-step (the difference is the way the torch trigger works). Choosing between these two step modes allows the welder to decide whether they want to hold down the torch trigger permanently or only do so to start and stop welding. In 2-step mode, the torch trigger is held down during welding and released to end it. In 4-step mode, the trigger is pressed and released again (the same action is repeated to end welding). This makes torch guidance/handling more relaxed for the welder, which has a positive effect, especially when longer weld seams are involved.
Ignition via high-voltage pulses triggered by touching the workpiece.
The devices are fully digitized, microprocessor-controlled inverter power sources. A universal controller controls the entire welding process. The actual data is measured continuously and the device responds immediately to any changes. Special rule algorithms ensure that the desired target state is maintained. The software system is the decisive factor for the weld properties of the power sources, not a rigid hardware system that can barely be changed. This results in high accuracy in the welding process, exact reproducibility of the welding results, and excellent operating characteristics.
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This is the latest welding system in tandem welding based on the Fronius TPS/i system platform.
More about the TPSI TWIN Push
The TransPocket series includes power sources for electrode welding with fully digital inverter technology. User-friendliness, durability, high performance, and mobility are the characteristics of these welding systems.
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The TransSteel is a fully digitized, microprocessor-controlled inverter power source. The modular design and internal software system make system add-ons or updates very easy. The main application is GMAW steel welding. The central control unit is linked to a digital signal processor. They control the entire welding process. Actual data is measured continuously so that the device can respond immediately to any changes. Special control algorithms control the entire welding process and ensure that the desired target state is maintained. The software system is the decisive factor for the weld properties. This provides the opportunity to make ongoing improvements and adaptations.
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The TransTig is a fully digitized TIG series and can be used for direct current (DC) applications.
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The tungsten electrode is a non-consumable electrode for TIG welding.
Additional information on tungsten electrodes
If the tungsten electrode touches the weld pool during TIG welding, particles of the electrode can get into the molten mass and cause welding faults or tungsten inclusions.
Types of radiation in the electric arc
The electric arc emits visible radiation, invisible infrared or heat radiation, and invisible ultraviolet radiation.