Views:1 Author:LEIMING Fiona Publish Time: 2019-01-23 Origin:http://www.lmnlaser.com/leiminglaser.html
It is well known that the correct use of welding shielding gas is an important factor affecting weld formation and performance. Choosing the suitable welding shielding gas is a way to improve the laser welding machine quality and efficiency. Since the welding shielding gas is so important, then what is the role of shielding gas?
In laser welding, shielding gas will affect weld formation, weld quality, weld penetration and weld width. In most cases, the blowing of the shielding gas will have positive effects on the weld, but it may also bring negative effects.
1.Proper blowing of shielding gas can effectively protect weld molten pool from oxidation.
2.Proper blowing of shielding gas can effectively reduce the splash generated during the welding process.
As long as the gas type, gas flow rate and blowing method are selected correctly, the desired effect can be obtained.
However, improper use of the shielding gas can also bring negative effects.
1.Improper injection of shielding gas may lead to worsening of weld seam.
2.Selecting the wrong type of gas may cause cracks in the weld, it may also lead to reduced weld mechanical properties.
3.Improper blowing of shielding gas will have a certain effect on the weld penetration, especially when welding thin plates, the weld penetration will be reduced.
The choice of the shielding gas directly affects the laser welding machine welding quality. Welding tests can be used to select a more suitable welding gas for better welding results. To learn more about laser welding machine, feel free to contact SENFENG LEIMING LASER.