As the most commonly used welding equipment in industrial production,fiber laser welding machine is indispensable in the production and processing of raw materials. Since its appearance, the technology of fiber laser welding machine has been gradually improved. And there are more and more kinds of fiber laser welder machine.

As a new welding method, laser welding is irreplaceable in the welding of thick wall materials and high precision parts.Fiber laser welding machine can complete butt welding, overlapping welding, sealing welding and other technical requirements. The weld width is small. The heat hazard area is narrow. The welding speed is faster. The joint is flat, beautiful and generous.It does not need for reprocessing after welding and easy to complete automatic operation.

In terms of the current fiber laser welding technology, although the laser welding technology is more and more perfect, there are still defects. The problem is the deformation of the material that we often encountered in the welding process, so how to effectively avoid this problem?

The main factors affecting the deformation of welding materials are welding current, pulse width and frequency.

If the welding current increases, the width of the weld will increase. If it is too wide, the splash phenomenon will be formed. So that the surface of the weld will be oxidized and deformed. And the roughness will be improved.

The increase of pulse width will improve the strength of the welded joint. When the pulse width reaches a certain extent, the heat conduction energy of the material surface will also increase, resulting in the phenomenon of molten pool spatter.

The influence of welding frequency on the welding deformation of stainless steel plate is closely related to the thickness of steel plate. Take 0.5mm stainless steel as an example, when the frequency reaches 2Hz, the weld overlap rate is high. When it reaches 5Hz, the welding seam burns seriously and the thermal influence becomes greater, resulting in material deformation.

In order to avoid or reduce the deformation of welding materials, it is necessary to start from these three factors. Welding personnel can take these three factors as variables and test the best data by conducting experiments on welding parts of different materials and thicknesses. Combined with the data for welding work, constantly improve the welding quality, so as to minimize the occurrence of material deformation.