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使用自制的交错式功率超声双振动头装置,处理A356铝合金流动熔体获得半固态浆料,研究了1000和1500W超声换能器前后排布流道、不同浇注温度和不同流道倾斜角度对A356熔体处理所获半固态组织的影响规律。结果表明,双振头斜流道对晶粒有细化作用,不同的倾斜角度对A356半固态组织细化程度不同。施振温度为620℃,流道倾斜角度为40°时,初生相晶粒最为细小,球化效果最好。
The semi-solid slurries were obtained by processing the flowing melt of A356 aluminum alloy by using the self-made double ultrasonic vibrating head device with interlaced power ultrasonic waves. The flow channels of 1000 and 1500 W ultrasonic transducers before and after the arrangement were studied. The effects of different pouring temperatures and A356 melt treatment of semi-solid tissue obtained by the law of influence. The results show that the diagonal flow channel of the double vibrating head has grain refinement, and the different tilting angles have different degrees of refinement on the A356 semi-solid structure. When the temperature of vibration is 620 ℃ and the inclination angle of flow channel is 40 °, the grains of the primary phase are the smallest and the spheroidizing effect is the best.