Key Performance of 2 000 MPa Grade Integral Laser Welding Door Ring
In order to improve the side impact and lightweight effect of the vehicle,the paper briefly describes the key performance technology of integrated laser welding and thermoforming door ring,using three different thickness of 1 000,1 500,2 000 MPa strength thermoforming steel plate scheme.From the weld position stretching,Vickers hardness,limit sharp cold bending,low temperature impact,delayed cracking five experiments to verify.The results show that 2 000 MPa integrated thermoforming laser spell welding door ring is the best solution.This study provides experience for the subsequent design and development of integrated door ring.
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