Research on brazing process of laminated aluminum alloy composite plate
The brazing process of 4343/3003 laminated aluminum alloy composite plate in ordinary box furnace has been improved after taking simple measures,i.e.rapidly heating up the samples with preheated steel,measuring temperature with the thermocouple probe di-rectly contacting the sample surface,and preventing oxidation with charcoal covering the sample surface.Those can lead to satisfactory brazing joints.Macroscopic morphology and microstructure of brazing joints have been investigated with different brazing temperatures,insulation time,and load pressure.The results show that satisfactory brazing joints can be obtained in the ordinary box furnace with brazing temperature,insulation time,and load pressure as 610℃,8min and 1.5 N,or as 620℃,6 min and 1.5 N respectively.
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