摘要
气雾化生产金属粉末是一个复杂的过程,影响因素较多。为制备较细粉末需求最佳的工艺参数组合,应用气体动力学和流体力学分析了雾化气体压力、金属熔体温度和导液管内径对H70黄铜雾化粉末粒度及其分布的影响。结果表明:适当地提高气体压力和金属熔体温度或者减小导液管内径均能使雾化粉末粒度增大,当雾化气体压力为1.3MPa,金属熔体温度为1160℃时,导液管内径为3.5mm时,所制得的粉末的粒度及其分布均达到最佳效果。
The production of metal powder by gas atomization is complicated,whose process was influenced by many factors.Effects of pressure and temperature on the powder granularity and distribution of H70 brass were analyzed based on gas kinetics and hydrodynamics.Results showed that powder granularity can be increased with the increase of the gas pressure and melt temperature.The optimized powder granularity and distribution effects can be obtained with melt temperature of 1 160 ℃ and atomized pressure of 1.3 MPa.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2005年第7期444-446,共3页
Special Casting & Nonferrous Alloys
关键词
气体雾化
雾化压力
熔体温度
粉末粒度
Gas Atomization,Atomized Pressure,Melt Temperature,Powder Granularity
