【摘要】 针对铝/不锈钢大面积钎焊对钎料的特殊要求,采用气雾化法制备了Al-Si共晶合金钎料粉末,并对雾化金属熔体质量流率、雾化气体压力及雾化温度等影响雾化效果的主要因素进行了研究.结果表明,在金属液流直径dt=5 mm,雾化气体压力P=1.0 MPa,雾化温度720~770℃的条件下,可制备出75~350μm粉末的质量分数达90%以上的钎料,其各项性能指标均达到法国同类产品的水平.更多还原

【Abstract】 In this paper,corresponding to the special requirement for brazing filler metal of large area brazing of aluminum/stainless steel,the gas atomization process was used to prepare Al-Si brazing powder with the eutectic composition.The effect of process parameters of melt flow rate,atomization gas pressure and temperature on the atomization result have been studied,the result indicates: under the conditions of the melt flow diameter of dt= 5.0mm,atomization gas pressure of P=1.0MPa and atomization temperature of 720-770℃,production rate of the qualified aluminum alloy filler metal powder of particle size 75-350 μm is over 90%wt,the product quality of Al-Si eutectic alloy brazing powder is same as that of the product made by France.更多还原