Power & Hand Tools

How an Welding Machine Works

How an Welding Machine Works
GARVEE is a website that sell 5-in-1 Welder online, LITAKE is one of the brands of 5-in-1 Welder. We hope this guide has been a helpful and informative overview of modern welding technology. Whether you’re a novice welder or an expert, we’ve got everything you need to take your welding skills to the next level.

Ready to dive into the details? Here’s a step-by-step guide to how an arc welding machine works.

1. Setting up the machine – To begin, the welding machine must be set up. Various controls can be used to change the power of the machine and how it operates. It’s important to read the manual provided by the manufacturer thoroughly to set up an arc welder properly.

2. Grounding the welding material – Once the welder is ready to begin the welding process, they will attach a ground clamp to the metal workpiece. This attaches directly to the welding machine. This is essential because it helps complete the electrical circuit that will create the arc, which is used to join the two pieces of metal together.

3. Placing an electrode lead against the welding material – When the welder is ready to begin the welding process, they will place a highly-conductive electrode against the welding material and activate the machine to send electrical current through the workpiece. The electrode may be a stick electrode or a piece of wire fed through a welding “gun” depending on the type of arc welding being performed.

4. Forming the electrical arc – When the electrode is pulled away from the metal workpiece slightly, usually by about 2 to 4 millimeters, an electrical arc forms as electrical jumps between the metal and the electrode. This extremely hot arc begins to melt the metal workpiece and the electrode almost immediately.

5. Melting the metals and joining them together – Once the arc has been formed, the metal workpiece and electrode will continue to melt together, forming what’s called a “weld pool.” This is a pool of molten metal that will form the joint between the metal that is being welded.

6. Protecting the metal with shielding gas – At high temperatures, the oxygen and other gases in the atmosphere tend to react with the metal in the weld pool, and can cause imperfections that damage the quality of the metal joint.

To prevent this, a shielding gas like argon, helium, or carbon dioxide is used. Depending on the type of welding, the electrode may be coated with “flux”, a material that releases shielding gas while it melts, or shielding gas may be pumped through the welding tool out of special holding tanks used by the welding machine. This protects the integrity of the joint and keeps it stable, preventing degradation due to the breakdown of gases in the atmosphere.
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