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1 Laser Welding Basics
convective heat transfer between the high temperature metal fluid and the cold
fluid, and directly affects the size and shape of the weld pool.
(5) The parameter of side blowing auxiliary airflow in deep penetration laser
welding is one of the main factors in determining the size of the weld pool
protected area and in reducing emission of plasma plume from the keyhole.
Increasing the flow velocity near the plasma plume is conducive to convective
heat dissipation, and in turn enhances the probability of recombination between
plasma positive ions and negative ions, therefore facilitating the improvement
of welding quality. There is a relatively large difference between the component flow field with helium as the auxiliary airflow and the flow field with argon
as the auxiliary airflow. From the perspective of the size of the protected area,
helium protection is better than argon protection.
1 Laser Welding Basics
convective heat transfer between the high temperature metal fluid and the cold
fluid, and directly affects the size and shape of the weld pool.
(5) The parameter of side blowing auxiliary airflow in deep penetration laser
welding is one of the main factors in determining the size of the weld pool
protected area and in reducing emission of plasma plume from the keyhole.
Increasing the flow velocity near the plasma plume is conducive to convective
heat dissipation, and in turn enhances the probability of recombination between
plasma positive ions and negative ions, therefore facilitating the improvement
of welding quality. There is a relatively large difference between the component flow field with helium as the auxiliary airflow and the flow field with argon
as the auxiliary airflow. From the perspective of the size of the protected area,
helium protection is better than argon protection.