What you need to know about Welding Service

Welding services are the process of joining two or more metal parts by melting and fusing them together. Welding can be done manually or by using machines, such as robots. Welding is used for various applications, such as manufacturing, construction, automotive, and power generation.

What are the different types of welding?

Welding is a process of joining two or more metal parts by melting and fusing them together. There are many different types of welding methods, each with its own advantages and disadvantages. Some of the most common types of welding are:

➤ MIG welding: This is a type of arc welding that uses a thin wire as an electrode and a shielding gas to protect the weld from contamination. It is easy to learn, fast, and versatile, but it requires gas and cannot weld thick metals or perform vertical or overhead welding.

➤ TIG welding: This is another type of arc welding that uses a non-consumable tungsten electrode and a shielding gas to produce high-quality welds. It can weld thin and non-ferrous metals, such as aluminum, copper, and nickel, but it is difficult to master and requires more skill and time than MIG welding.

➤ Stick welding: This is a type of arc welding that uses a flux-coated metal rod or electrode to create the weld. The flux produces gas and slag that shield the weld from the environment. It is simple, cheap, and portable, but it produces more spatter and slag than other types of welding and cannot weld thin metals or some alloys.

➤ Flux-cored arc welding: This is a type of arc welding that uses a tubular wire filled with flux as an electrode. It can be done with or without a shielding gas, depending on the type of flux. It is similar to MIG welding, but it can weld thicker metals and perform vertical or overhead welding. However, it also produces more spatter and slag than MIG welding and requires more cleaning.

➤ Plasma arc welding: This is a type of arc welding that uses a plasma jet as an electrode and a shielding gas to create the weld. It can produce very high temperatures and weld any metal, including refractory metals, such as tungsten and titanium. It is precise, fast, and efficient, but it is also expensive, complex, and noisy.

➤ Electron beam welding: This is a type of welding that uses a beam of high-velocity electrons to heat and fuse the metals. It can weld very thin and thick metals, as well as dissimilar metals, with minimal distortion and contamination. It is done in a vacuum chamber, which makes it very clean and precise, but also costly and limited in size.

➤ Laser beam welding: This is a type of welding that uses a focused laser beam to heat and fuse the metals. It can weld very thin and thick metals, as well as dissimilar metals, with high accuracy and speed. It is done in air or a protective atmosphere, which makes it more versatile than electron beam welding, but it also requires more power and safety precautions.

➤ Gas welding: This is a type of welding that uses a flame produced by burning a fuel gas, such as acetylene, and oxygen to heat and melt the metals. It can weld most metals, especially ferrous metals, such as steel and iron, but it is slow, noisy, and requires gas cylinders and hoses.

➤ Atomic hydrogen welding: This is a type of arc welding that uses two tungsten electrodes and a stream of hydrogen gas to create the weld. The hydrogen gas dissociates into atomic hydrogen, which recombines and releases a large amount of heat. It can weld refractory metals, such as tungsten and molybdenum, but it is rare, expensive, and dangerous.

➤ Electroslag welding: This is a type of welding that uses a consumable electrode and a molten slag to create the weld. The slag melts the electrode and the metals, and then solidifies to form the weld. It can weld very thick metals, such as steel plates, but it is slow, messy, and requires a lot of power.

What is the difference between MIG and TIG welding?

MIG and TIG welding are both forms of arc welding, which means they use an electric arc to heat and melt the metals to be joined. However, they have different techniques and advantages, depending on the type of metal, the thickness of the material, and the desired quality of the weld. Here are some of the main differences between MIG and TIG welding:

➤ MIG welding uses a consumable wire electrode that is fed automatically through the welding torch. The wire acts as both the arc and the filler material. TIG welding uses a non-consumable tungsten electrode that creates the arc, and a separate filler rod that is manually added to the weld pool.

➤ MIG welding requires a shielding gas, usually a mixture of argon and carbon dioxide, to protect the weld from contamination by the air. TIG welding also uses a shielding gas, usually pure argon, but it can also be done without gas in some cases.

➤ MIG welding is faster and easier than TIG welding, as it can weld thicker metals and perform vertical or overhead welding. It is also more suitable for welding steel, stainless steel, and aluminum. TIG welding is slower and more difficult than MIG welding, as it requires more skill and precision. It is more suitable for welding thin and non-ferrous metals, such as copper, nickel, and titanium.

➤ MIG welding produces more spatter and slag than TIG welding, which means it requires more cleaning and finishing. TIG welding produces cleaner and smoother welds than MIG welding, which means it requires less post-weld treatment.