研究目的
To establish a new heat source model for the keyhole effect of laser-TIG hybrid welding of AZ31B magnesium alloy, aiming to better simulate the weld pool morphology, especially the inflection point near the keyhole.
研究成果
The new C-G hybrid heat source model provides a better simulation of the weld pool morphology for laser-TIG hybrid welding of AZ31B magnesium alloy, especially the inflection point near the keyhole, with an error rate of 0.52%. It reflects the high speed, narrow heat affected zone, and deep depth of molten pool of the hybrid welding.
研究不足
The study focuses on the simulation of weld pool morphology for laser-TIG hybrid welding of AZ31B magnesium alloy. The applicability of the model to other materials or welding methods is not verified.
1：Experimental Design and Method Selection:
The study uses a new heat source model combining inverted conical heat source and rotary Gauss body heat source for laser-TIG hybrid welding simulation.
2：Sample Selection and Data Sources:
Base materials are magnesium alloy AZ31B with a size of 50 mm×50 mm×5 mm.
3：List of Experimental Equipment and Materials:
LWS-500YAG laser and YC-300WX (TIG) welding system.
4：Experimental Procedures and Operational Workflow:
Laser power is 500 W, the TIG current is 120 A, the welding speed is 800mm·min-
5：Infrared temperature measurement is used to measure the temperature curve. Data Analysis Methods:
Parameters of the hybrid heat source model are adjusted by the result of the difference of the simulation and the measurement.
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