不同含沙量不同流速时材料的磨蚀失效特性

采用花园口黄河原型沙（ｄ５０＝０．０３ｍｍ），在Ｎ－ＣＡ转盘气蚀仪上对三种材料进行了四种含沙量、六个流速的磨蚀失效特性试验研究。在试验的含沙量及流速范围内，三种材料的磨蚀失效随含沙量的加大、流速的增加而呈幂函数变化。当流速大于２５ｍ／ｓ时，材料的磨蚀速度加剧。

Abrasion Failure of Material under Different Sand Contents and Flow Velocities

An experimental research of abrasion failure characteristics was undertaken on the NCA spinning cavitation device with three kinds of materials, using the actual sand obtained from Yellow river at Huayuankou (d50=0.03mm), under four different sand contents and six various velocities. The experiment shows that there is a power-law change of the flow velocity. The material abrasion becomes severe under flow velocity more than 25m/s.