Are you looking for a welding machine that will suit best your need? Take a look at the following TIG welders buying guide to help you find the best machine in this page.
TIG Welder Machine – What Is It Actually?
TIG or Tungsten Inert Gas is a machine used in a welding process. This is a process that involves a tungsten electrode. This will allow you to provide an arc that is covered by an inert gas. Most of the time, the inert gas used in the welding process is pure argon. When the gas shields the arc, you will find that the arc doesn’t consume the tungsten electrode. However, the arc will get a transition point from the electrode. The arc will heat the metal during the welding process. There will be the same metal filler rod introduced to the arc as long as the metal is heated at a proper temperature. This will provide a molten or puddle metal which can be used to fill the weld joint.
How to Choose the Best TIG Welding Machine?
There are some key factors that you have to consider carefully before picking up a welding machine that will be suitable the most with your need. Here is the TIG welders buying guide list that you should put concern.
- TIG Welding Modes
Basically, there are two different modes provided by a TIG welding machine. They are AC and DC modes. The AC or Alternating Current mode is mainly used for magnesium and aluminum alloys. Meanwhile, the DC or Direct Current mode can be used for all metals but magnesium and aluminum alloys. One of the most common questions asked before choosing a TIG welding machine is the aluminum welding required or not. If the answer is positive, then a machine that provides AC mode is what you need. Most of the time, modern AC welding machines come with inverter types. The inverter feature usually supports DC capacity. So, both the DC and AC TIG welding machine will make it possible for you to weld most metals. However, the TIG welding machine with DC mode will be a perfect choice if aluminum welding is not needed.
- Gas Delivery
The next thing you should consider well before buying a TIG welding machine is the gas delivery capability. You need to know that the welding machine needs to insert gas shielding. So, there will be a specific method required to introduce and connect the gas into the welding machine. Modern TIG welding machines with a more sophisticated construction come with an in-built gas valve. This feature will make it possible for the welding machine turn on automatically once you press the torch trigger. These kinds of machines also come with several added features of pre-gas and post-gas. The features will allow you to set a time so you can add gas to clean the areas just before starting the machine. They will also make it possible for you to avoid the oxygen flow to contaminate the weld pool as well as let it cool down at the end of the welding process. Meanwhile, the TIG machines with a less sophisticated structure don’t come with an in-built gas valve. So, you need to operate the torch manually. In this way, the next important question you should ask yourself is that a gas valve is necessary or not.
- Arc Starting
Another important feature in a TIG welding machine is an arc starting. Basically, there are three styles of arc starting that mostly used in TIG welding machines.
- Scratch Start
This is considered to be the oldest starting technique used in a welding machine. The scratch start is mostly connected to a welding machine with a transformer type. However, this arc starting is rarely used in the welding machine with inverter features.
- Lift Start
This arc starting style is commonly found in inverter machines in which the tungsten is operated gently. Then, the control circuit will feel the touch and waits for the tungsten to do the job. After that, the tungsten will ignite the arc immediately to start the welding process.
- HF Start
This arc starting style will allow you to start the welding process without the need to use the tungsten to do the job.
- Remote Control
The today technology used in a TIG welding machine also allows you to use a remote control to operate it. When choosing the machine, there are four different scenarios for the remote control that you should know. They are remote torch trigger control, remote torch trigger & current control, remote foot control of arc starts & current, and no remote control.