Two different modes of laser welding
When using a laser welding machine for laser welding, there are two different ways or the energy can be transferred from the laser to the welding data. Depending on the power density, which is the power factor of the laser and the weld area,the laser welding method can be in the form of conduction or keyhole. You may be familiar with it now because it is a form of keyhole that is often used in craft welding. It should be emphasized that the type of welding that is occurring is determined by the amount of power being transferred to the substrate,and the nature of the information being welded.
The primary difference between the two laser welding methods is the amount of energy transferred to the metal. You can think of the conduction form as a low energy density, while the keyhole form involves a higher energy density. But remember, energy density is the most influential form. Moreover, because the energy density is the cross-sectionalarea of the power source passing through the weld, changing the welding scale or dividing the power of the laser beam by the definition will affect the type of welding form.
Conduction type welding is basically heating the weld with low energy density on the surface of the data to be welded. Once the surface of the material is heated deeper, then. Because this form of welding is a low energy density welding, the size of the weld on the surface is generally larger,and the penetration depth of the weld is usually shallower.
When you move from a low energy density welding to a high energy density welding, the form changes from conduction mode to keyhole type. Thirdly, according to the definition of energy density, this can be achieved by reducing the weld size or adding laser beam power. In the simplest term, keyhole form fusion welding is welded because of the higherenergy density transmitted to the keyhole or the data in the hole. The hole is formed by the vaporized metal. As the beam moves forward, molten metal fills behind it and reaches from the outside of the material to the bottom of the practice melt section. This is different from the conduction form in which only the surface is heated, and thereforethe weld does not penetrate as deep.
This article comes from the manual welding equipment of water tankhttp://www.abbzs.com