Dear Wathiq Abdullah

Converting an arc welding machine into a TIG (Tungsten Inert Gas) welding machine is not a straightforward task and may not be feasible or recommended. Here's why:

1. Power Supply: Arc welding machines typically provide a constant current output, which is suitable for arc welding processes like shielded metal arc welding (SMAW) or stick welding. On the other hand, TIG welding requires a constant voltage power supply. The difference in power supply characteristics makes it challenging to convert an arc welding machine for TIG welding without significant modifications.

2. Welding Process: Arc welding and TIG welding are fundamentally different welding processes. Arc welding uses a consumable electrode covered with flux, which provides a shielding gas and creates a molten pool to form the weld. In TIG welding, a non-consumable tungsten electrode is used to create an arc, and a separate shielding gas (typically argon) is required to protect the weld from oxidation. The process requirements and control parameters for TIG welding are different from those of arc welding.

3. Control Circuitry: TIG welding machines have specific control circuitry to regulate the welding current, control the shielding gas flow, and manage other parameters like electrode polarity. Converting an arc welding machine to TIG welding would require significant modifications to the control circuitry to accommodate the different requirements of TIG welding.

4. Gas Flow and Electrode Configuration: TIG welding requires precise control of the shielding gas flow and electrode positioning. Converting an arc welding machine to TIG welding would involve adding a gas hose and establishing a gas flow control mechanism. Additionally, a suitable electrode holder and gas cup assembly would need to be added to support the non-consumable tungsten electrode used in TIG welding.

Given these factors, it is generally more practical and efficient to use a dedicated TIG welding machine for TIG welding applications. TIG welding machines are specifically designed to meet the process requirements and provide the necessary control and functionality for TIG welding.

Better do not :) But all is possible if you want to spent a lot of cash.

Dear Janusz Rebis

Your response, "Better do not :) But all is possible if you want to spend a lot of cash," is somewhat in line with the practical considerations I mentioned in my previous answer. While it may be technically possible to convert an arc welding machine into a TIG welding machine with the addition of inert gas, it would indeed require significant modifications and expenses. Here's a justification for the Janusz Rebis response:

1. Cost of Modifications: Converting an arc welding machine into a TIG welding machine would involve replacing or modifying the power supply to provide a constant voltage output. This could require rewiring and purchasing additional components, which can be expensive. Furthermore, the necessary changes to the control circuitry, gas flow system, electrode configuration, and other components would also contribute to the overall cost.

2. Expertise and Labor: Converting an arc welding machine into a TIG welding machine is a complex task that requires expertise in electrical engineering, welding processes, and control systems. It would likely require the involvement of skilled professionals to ensure the modifications are done correctly and safely. The cost of their labor would further add to the overall expenses.

3. Reliability and Performance: Converting a welding machine from one process to another may compromise the reliability and performance of the equipment. Arc welding machines are specifically designed and optimized for arc welding processes, while TIG welding machines are tailored for TIG welding requirements. Modifying an arc welding machine to perform TIG welding may result in suboptimal performance, reduced efficiency, and potential issues with weld quality and consistency.

4. Availability of Dedicated Equipment: Dedicated TIG welding machines are readily available on the market and are designed specifically for TIG welding applications. These machines come with the necessary features, controls, and capabilities to ensure efficient and reliable TIG welding. Investing in a purpose-built TIG welding machine would likely provide better results, increased productivity, and long-term cost-effectiveness compared to attempting to convert an arc welding machine.

In summary, while it might be technically feasible to convert an arc welding machine into a TIG welding machine with the addition of inert gas, the associated costs, expertise, potential reliability issues, and the availability of purpose-built TIG welding machines make it more practical to invest in dedicated equipment.