MMA Welding Machine is used to join metal and steel by melting the joints and then cooling the welded joint by forming a protective crust. A machine shop can create numerous products using MMA, all in a variety of sizes and workpieces. It is also possible to add welding additives to create customized products. Some of the MMA welded product fields are combat helmets, weapon repair, body art, automotive repair, motorcycle parts, and aircraft parts.
Point To Remember Before Using MMA Welding Machine
Before any type of MMA welding process takes place, it is necessary to prepare the work piece for the welded joint. Preparation can include fitting electrodes into the holes and smoothening the edges. It is also necessary to have a well-functioning electric supply, as well as a steady supply of fuel. In some cases, the power source may come from a separate electrical generator and the entire operation may be powered by one or two windings of a large magnet.
The three general types of MMA welding guns are the clamping machine, the portable welding gun, and the direct-drive welding gun. The clamping machine is capable of working with one to five electrodes at the same time. The portable machine is capable of working on smaller work pieces than a regular welding gun, but it has much less power and can only work on a single project at a time. The direct-drive machine is the most powerful and works best with larger projects; however, its portability is limited.
Working Mechanism of MMA Welding Machine
All MMA welding machines must have a hot-start mechanism. All metal foils or sheets must be completely cured before joining the two metals together. The process must start by heating the sheet until it is sufficiently hot and the surface vaporizes. Then, the sheet is passed through the metal clamp and the clamps around the edges are gradually heated up. This creates a vapour of gas surrounding the two metals, which is then allowed to combine with the molten metal in the middle.
Important Factors of MMA welding Machine
The MMA welding machine can handle either short-circuiting or simultaneous welding processes. Short-circuiting occurs when the arc is not completely formed and the flux in the machine is not enough to induce the proper arc shape.
The duty cycle is the maximum amount of time the machine can be run without recharging. MMA arc welding machines generally have higher duty cycles because they use more filler metal feed and less manual work. However, you need to pay close attention to the duty cycle, because if the machine needs to run constantly then it is an indication that the feed mechanism is not strong enough. Some MMA machines have variable-duty cycles. The maximum load rating is another important factor to consider while purchasing MMA arc welding machines.