Globular Transfer Welding is a revolutionary process that has revolutionized the art of welding. It is an arc welding process where a filler layer is generated by the transfer of welding droplets across an arc of molten metal.
The process is known for its ability to produce high quality welds with low levels of distortion and porosity, making it one of the most popular welding processes used in industry today. According to the American Welding Society (AWS), more than 95% of all welding operations in the United States rely on this process due to its performance, cost, and ease of use. Globular transfer welding is used in a wide range of applications, from automotive manufacturing to pipeline welding, and its utilization continues to grow thanks to technological advancements and improved user-friendliness.
What Is Globular Transfer Welding?Globular transfer welding (GTW) is a type of welding process that uses arc energy to heat two metal surfaces, causing them to join together.
GTW is used in many industrial applications and is capable of welding a wide variety of metals.
History of Globular Transfer WeldingThe first experiments with GTW were conducted in the early 1950s, although the welding process was not widely used until the 1970s. Recent advances in technology have made GTW more prevalent and efficient.
How Globular Transfer Welding WorksGTW is based on the principle of an electric arc, which is an electric current passing between two metal surfaces. A metal electrode is used to create a heated spot between the two metal surfaces, which melts and fuses them together. The metal electrode itself provides the metal for the weld and a consumable that melts and fuses the metal surfaces together.
The electrical current creates an arc between the two metal surfaces, which provides heating and melting of the electrode, enabling the weld to take place.
Advantages of Globular Transfer Welding
- It offers high deposition rates due to high energy density.
- It has proven to be reliable and consistent, producing consistent welds.
- It is capable of welding a wide variety of metals.
- It is able to weld in difficult positions and tight spaces.
- It is cost-effective and efficient.
- It can be used to weld aluminum, stainless steel, and other alloys.
Disadvantages of Globular Transfer Welding
- It requires a higher level of skill to avoid weld defects.
- It requires the use of a higher voltage than other welding methods.
- It produces a large amount of smoke and fumes.
- It produces a lot of slag, which needs to be cleaned up.
- It is more likely to crack due to the excessive heat.