gázhegeszt

Gázhegesztés, often translated as gas welding, is a group of fusion welding processes that use a gas flame as the heat source. The most common form is oxy-acetylene welding, which utilizes a flame produced by the combustion of acetylene and oxygen. Other gas combinations can also be used, such as oxy-hydrogen or propane-oxygen, though these typically produce lower temperatures and are suitable for less demanding applications.

In gas welding, a filler rod is often used to add material to the joint, creating a stronger weld. The flame's temperature can be adjusted by varying the ratio of oxygen to fuel gas. A neutral flame, where the oxygen and acetylene are in equal proportions, is generally preferred for most welding tasks as it provides a stable and efficient heat source without excessively oxidizing or carburizing the molten metal.

The process involves melting the base metals at the joint and, if a filler rod is used, melting its tip as well. The molten metal from the base materials and the filler rod combine to form a weld pool, which then cools and solidifies, joining the two pieces. Gas welding is versatile and can be used on a variety of metals, including steel, aluminum, and copper alloys. It is often employed for repair work, fabricating thin sheet metal, and in applications where portability is a requirement. While less common for heavy industrial fabrication compared to arc welding, gas welding remains a valuable technique.