Welding is one of the most common fabrication processes used in the modern world. The use of welding as a technology to join materials together dates back as far as ancient Egypt, with various source materials being utilised since then. However, modern welding technologies offer many advantages over the techniques of yesteryear, with one of the most popular models being Manual Metal Arc (MMA) welding.
MMA welding is a welding process which utilises an electrode, which is heated to a molten state and then used to join two or more pieces of materials together. The welders use an electric arc to provide power, with the electrode becoming a highly efficient filler material. Due to the simple nature of the process, it is relatively simple to operate and provides a high-quality weld.
However, due to its nature as an open arc process, MMA welding can require extra precautions when employed in certain conditions. Primarily, the use of Manual Metal Arc welding in tight spaces or enclosed areas can be fraught with danger - meaning protective equipment (such as facemasks, gloves and protective clothing) must be worn to ensure the safety of all parties. Furthermore, the welding rods may be required to be specially shielded in order to achieve a flawless weld, as well as additional protective measures such as insulation or a makeshift fireproof shield.
Further to this, the quality of the weld itself is highly dependent on the skill of the welder, as well as the materials used. The weld has to be fully penetrated and should not be a surface attach alone. This can become especially difficult with thicker pieces missing an even bevel, which would require greater muscle power or an additional welding process such as orbital welding to achieve the desired finished product.
The use of a digital microscope or other inspection technology is also recommended when engaging in manual metal arc welding, as this will ensure that the quality of the weld is as desired. Digital microscopy can provide detailed images of the weld area, indicating stress fractures, porosity, or other issues with the weld itself.
In conclusion, Manual Metal Arc welding is a powerful technology which needs to be employed with extra care if desired weld parameters are to be met safely. The process can be relatively simple if the right materials and equipment is used, however appreciation of the nuances within the welding process may be required to ensure a successful weld. Utilising digital microscope technology can ensure a valid weld without incident - resulting in a safe and successful process every time.
