What is the main function of welding in manufacturing processes?

Welding is primarily utilized in manufacturing as a method for joining materials, most commonly metals and thermoplastics, to create strong, permanent connections. This joining process involves melting the workpieces and adding a filler material to form a strong bond as it cools and solidifies. The integrity and strength of welded joints are crucial in various applications, from structural frameworks to piping systems, where the strength of connections is vital for safety and performance.

While other processes like cutting materials, finishing surfaces, or creating molds play important roles in manufacturing, they do not align with the core purpose of welding. Cutting is used to shape materials before they are joined, finishing enhances surface properties for aesthetics or functionality, and creating molds involves shaping materials rather than joining them. Thus, the primary role of welding distinctly centers on the joining of materials, making it an essential technique in manufacturing.