Welding Process Parameters of Melting Method Galvanized Steel Sheet Spot Welding
Spot welding is a welding process that uses two electrodes to apply pressure and electrical current to metal sheets that are placed in contact with each other. Among the different spot welding processes, melting method galvanized steel spot welding is widely used on account of its reliability and accuracy, as well as its relatively low cost compared to other welding processes. This paper will introduce the welding process parameters of melting method galvanized steel spot welding, which is particularly useful when working on materials with challenging geometric shapes or alloys.
The melting method galvanized steel spot welding process is ideal when welding materials such as Al-Mg-Si, aluminum alloys and titanium alloys. This welding method works by applying current to the contact area between two metal sheets and then melting a thin layer of molten metal between the sheets. As the molten metal solidifies, it creates a strong metallurgical bond between the sheets. The welding process parameters can be adjusted based on what type of metal is being worked on, such as the welding current, welding time, electrode tip shapes, and electrode force.
The welding current is an important parameter when melting method galvanized steel spot welding. The correct current should be chosen to ensure that the metal gets hot enough to melt, but not so hot that it causes excessive damage to the work surface. AC or DC current may be used depending on the type of metal being welded, but generally DC current is more effective for melting method galvanized steel spot welding.
The welding time is also an important parameter, as it should be sufficient to ensure that the metals are melted and cooled properly. Generally, welding times that are slightly longer than the welding current value are used when spot welding galvanized steel. The welding time is typically between 0.1-0.2 seconds, but it can vary depending on the type of metal and the desired strength of the weld.
The shape of the electrode tip is also important and is chosen based on the spacing between the metal sheets that need to be welded. Generally, a “V” or “Y” shape is used for most sizes due to their ability to create greater contact and reduce heat build-up.
The final parameter to adjust when melting method galvanized steel spot welding is electrode force. This determines the amount of pressure applied between the electrode tips and the metal sheets to ensure proper weld penetration and strength. Generally, the higher the force, the stronger welds will be created.
In conclusion, melting method galvanized steel spot welding is an excellent choice for welding challenging geometric shapes and alloys. The process parameters are adjustable, which ensures that the weld strength and accuracy will meet the desired requirements. By understanding the process parameters and how to adjust them, it is possible to create high-quality welds with this reliable and cost-effective welding technique.
