When using a medium frequency inverter spot welder to weld stainless steel plates, it is common to encounter the problem of porosity. Porosity refers to the presence of tiny air pockets or voids within the weld metal, which can weaken the overall strength of the weld and cause defects.
There are several reasons why porosity may occur when welding stainless steel with a medium frequency inverter spot welder. One of the main factors is the presence of contaminants on the surface of the metal, such as oil, grease, or rust. These contaminants can create gas pockets during the welding process, leading to porosity.
Another factor is the welding parameters. If the welding current or pressure is too high, it can create excess heat and cause the metal to vaporize, leading to gas pockets and porosity. Similarly, if the welding speed is too fast, it may not allow enough time for the metal to properly fuse together, resulting in incomplete welds and porosity.
To prevent porosity when welding stainless steel with a medium frequency inverter spot welder, it is important to properly prepare the metal surface by cleaning it of any contaminants. Additionally, it is important to carefully adjust the welding parameters to ensure that they are within the appropriate range for the specific application.
In summary, porosity when welding stainless steel with a medium frequency inverter spot welder can occur due to surface contaminants or improper welding parameters. By taking the appropriate steps to prepare the metal and adjust the welding parameters, it is possible to achieve high-quality, porosity-free welds.
Post time: May-13-2023