Effect of oscillating parameters on laser welding quality of aluminum alloy
In order to study the influence of oscillating parameters on welding quality during laser weld-ing of aluminum alloy,a single factor variable experiment was adopted in this paper,and under the conditions of 4 kW power,80 mm/s welding speed and 0 defocus,the effects of laser oscillating fre-quency and oscillating amplitude on weld forming and welding quality of 2-mm-thick 6k21 and 5754 a-luminum alloy sheet were analyzed.The experimental results show that with the increase of oscilla-ting amplitude,the weld penetration depth decreased,and the weld width increased first and then de-creased.With the increase of oscillating frequency,the weld penetration depth and width decreased.In the absence of welding defects,the shear strength of the specimen was positively correlated with the weld width.The research results can provide theoretical reference for laser welding process of au-tomotive lightweight all-aluminum body connection.
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