Research on Abrasion Resistance Design Index of Concrete in Hydraulic Structures 水工建筑物混凝土材料抗磨蚀设计指标的研究
Precisely cast ductile iron gear has advantages of low noise, high abrasion resistance index and long service life. 精密铸造球铁齿轮,噪音低,耐磨度高,使用寿命长。
The coking test was made on coal sample with the same blending ratio and different bulk densities, the relationships between coke abrasion strength, crushing strength, apparent porosity, coke reactivity index, coke strength after reaction and charging bulk density were obtained. 采用同一配煤比和不同的装煤堆密度煤样进行炼焦试验,得出焦炭的耐磨强度、抗碎强度、显气孔率、焦炭的反应性、反应后强度与装煤堆密度的关系。
The studies show that the basement index and abrasion index of glacial debris flow deposits are usually higher than those of moraine; 发现冰川泥石流堆积的基质指数和磨蚀指数均大于冰碛的基质指数和磨蚀指数;
The compression strength of the finished pellets was in excess of 2480 N/ P, the ISO tumbling index over 97% and the abrasion index less than 2%. 成品球团矿抗压强度大于2480N/个,ISO转鼓大于97%,耐磨指数小于2%。