电磁磨料射流增压特性参数优化研究

针对前混合磨料射流设备存在连续性差和后混合磨料射流系统磨料混合不均匀等问题,论文基于电磁磨料浆体射流技术,采用数值模拟分析和实验研究相结合的方法对影响电磁磨料浆体射流增压特性因素进行深入研究。依据前人研究结果,采用数值模拟预测磁通密度和电压两参数对导电介质出口速度及其动能影响情况,搭建了试验平台,结合正交试验特点,并进行试验。试验表明：磁通密度对射流增压特性影响最大,电压次之,验证了数值模拟分析结果,且在磁通密度为0.7 T,电压值为72 V,导电介质浓度选为18 %,极板间距为0.025 m情况下,射流增压特性效果最好。

Study on Optimization of characteristic parameters of electromagnetic abrasive jet supercharging

According to the pre mixed abrasive water jet equipment problems of poor continuity and post mixed abrasive jet system of abrasive mixing uniformity, the magnetic abrasive slurry jet technology based on the method of analysis combined with experimental study, numerical simulation of the in-depth research on the influencing factors of pressure characteristics of electromagnetic abrasive slurry jet. On the basis of previous research results, the numerical simulation of magnetic flux density and voltage of the two parameters on the conductivity of the medium outlet velocity and its kinetic energy effect, the test platform was built. With the orthogonal test, and test. The test shows that the magnetic flux density of the greatest impact on the pressure characteristics of jet, voltage time, verify the result of numerical simulation, and the magnetic flux density is 0.7T, voltage is 72V, the conductive medium concentration is 18%, the plate spacing is 0.025 cases, the best jet supercharging effect.