Influence of technology parameters on formability of 6082-T6/AlSi10MnMg dissimilar aluminum alloy flow drill screw joint
To explore the influence of process parameters on formability of 6082-T6 and AlSi10MnMg vacuum die casted aluminum alloy flow drill screw joints,the perforation speed,feed speed and tightening torque were selected as the experiment variables in the orthogonal ex-periment,the influence laws of process parameters on the minimum bushing height and average thread depth were studied through range anal-ysis.Based on the orthogonal experiment results,the response surface model of parameter values and measured indicators was established,the significance of the influence of each parameter on forming quality was discussed.The joint strength of the optimal process parameters combination was tested.The results show that the perforation speed and feed speed have a significant influence on the minimum bushing height,while the synergism between perforation speed and feed speed has less influence on the minimum bushing height.The average thread depth is mainly affected by tightening torque,perforation speed and feed speed have a weak influence on the average thread depth.The process parameters have a significant influence on the joints strength under both pulling and tension shear conditions.After parameter optimi-zation,the joint strength is increased by 9.48%and 8.64%respectively,and the joint strength changes little under shear condition.
flow drill screwvacuum die casted aluminum alloyorthogonal testresponse surface analysis
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