![]() In short: the MIG welding process uses a wire feeding system, and the fed wire acts as a filler metal and an electrode. It's used by hobbyists and professionals alike. MIG or GMAW (Gas Metal Arc Welding) is the easiest welding process to learn. Source: Welding principles and applications book by Larry Jeffus If these fundamentals are not making much sense to you now, don't worry because once we apply this to specific welding processes, it will all fall into place. The resistance to the electrical current flow causes the metal to melt, but there is a substantial difference if we are using DCEP, DCEN, or AC (switching between DCEN and DCEP many times in a second). The current starts in the welder, travels through the ground clamp first, enter the metal piece, and when the positive electrode touches the metal, the current jumps from the metal to the electrode, causing the arc to form. Electricity travels from the negative to the positive, as is the law of physics, so there is no change there. Ground clamp lead is attached to the negative. DCEP (Direct current electrode positive) - Electrode lead is attached to the positive terminal of the welder.The electricity starts its path in the welder, travels through the electrode first, it's attracted by the positive ground clamp attached to the metal piece, and the arc finally makes the jump from the negative electrode to the positive metal piece. Electricity travels from the negative to the positive. Ground clamp lead is connected to the positive terminal. DCEN (Direct current electrode negative) - Electrode lead is attached to the negative terminal of the welding machine.In welding applications electricity flows in one of two ways: A ground clamp must be attached to the welded metal piece while the torch/electrode holder completes the electrical circuit when making contact with the metal piece. To run any of these processes, it's necessary to have a closed electrical circuit. The MIG and TIG don't produce slag, while the stick and flux-cored arc welding leave slag as the residue of the burned flux. Stick and flux-cored rely on flux which releases the shielding gas while burning to provide the isolated atmosphere around the weld puddle. MIG and TIG use a shielding gas, while stick and flux-cored arc welding processes are gasless. Additionally, the shielding gas modifies the arc behavior and the transfer of the filler metal to the joint. These atmospheric elements cause porosity and cracking if they enter the weld pool. They use electric arc and electrical resistance to melt the base and filler metals and make a welding joint.Īny arc welding process requires weld pool protection from the atmosphere's elements like nitrogen and hydrogen. The four welding processes we will explain in this article are all arc welding processes. There are different types of welding used to join metal together. You will learn what they are, how they work, their advantages, disadvantages, and when to use each of them.īefore we get started, let's go through some fundamentals in short. This article discusses these four processes from a hobbyist and a beginner welder perspective. These are manual, but they can also be automated. You can see everything from laser and resistance to cold welding in professional applications.īut the four most prominent and most widely used welding processes are MIG, TIG, Flux-Cored, and Stick welding processes. The triggers are also made with a sealed micro switch that helps keep out dust and dirt to provide a long-lasting work life.Welding is a broad field with tens of welding processes, each used when it's best suited. Triggers are non-metallic and absorb less heat. Our Dura-Flux self-shielded flux-cored gun meets the demanding needs and harsh environments of construction, shipbuilding, heavy manufacturing and rental applications. That’s why Bernard designed the Dura-Flux™ self-shielded flux-cored gun to be extremely durable, yet comfortable to hold and use. Self-shielded flux-cored welding can be brutal on both you and your welding equipment. Built to optimize comfort and meet the demands of heavy-duty self-shielded flux-cored application
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