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ZL104系Al—Si—Mg—Mn合金主要由Si、Mg_2Si、AlSiMnFe相组成。其中Mg_2Si相人工时效强化效果明显。据资料介绍,目前国内外对铸造后的ZL104合金均采用T_1(180℃保温12～20h)或T_(?)(535~(±5)℃保温4～6h,热水冷却+175~(±5)℃保温12～20h)的工艺处理。例如,对ZL104合金摩托车发动机在(左右)箱体、磁电机转子的技术要求是:①压力铸造,②时效工艺为T_1或T_6,③时效后的硬度为HB70～85。采用T_1、T_6时效工艺,保温时间长,能耗大,生产效率低。我们按T_1工艺处理11000多件,有近70%的工件硬度高于HB85。在组装发动机时有10～20%工件开裂报废。为解决此问题,我们对ZL104
ZL104 series Al-Si-Mg-Mn alloy is mainly composed of Si, Mg_2Si, AlSiMnFe phase. The artificial aging effect of Mg_2Si phase is obvious. According to the introduction of the information, at present, both T_1 (180 ℃ for 12 ~ 20h) and T_ (~) (535 ± 5 ℃) for 4 ~ 6h, hot water for cooling + 175 ~ (± 5) ℃ insulation 12 ~ 20h) process. For example, ZL104 alloy motorcycle engine in (left and right) box, magneto rotor technical requirements are: ① pressure casting, ② aging process T_1 or T_6, ③ after aging hardness of HB70 ~ 85. Using T_1, T_6 aging process, holding a long time, energy consumption, low productivity. We processed more than 11,000 pieces by T_1 process, with nearly 70% of the pieces harder than HB85. In the assembly of the engine 10 to 20% of the workpiece cracking scrap. To solve this problem, we are on the ZL104