ISO 349:1975 硬煤.用奥迪伯特阿尔（Audibent-Aruu）膨胀试验

标准编号：ISO 349:1975

中文名称：硬煤.用奥迪伯特阿尔（Audibent-Aruu）膨胀试验

英文名称：Hard coal — Audibert-Arnu dilatometer test

发布日期：1975-01

标准范围

规定了在标准条件下用膨胀计加热硬煤时测定其膨胀特性的方法。在执行该方法时，将在压力下形成的粉煤制成的铅笔插入精确校准的窄管中，顶部是一根校准的钢棒，该钢棒在管孔中滑动。整体以恒定且确定的速率加热。通过定期读取杆位移作为温度函数的读数，并将观察到的位移表示为penicl a曲线原始长度的百分比。

Specifies a method for determining the swelling properties of hard coal when heated under standard conditions in a dilatometer. In performing the method a pencil made of powdered coal formed under pressure is inserted into a precisely calibrated narrow tube and topped by a calibrated steel rod which slides in the bore of the tube. The whole is heated at a constant and definite rate. By making regular readings of the displacement of the rod as a function of the temperature and expressing the displacements observed as percentages of the original length of the penicl a curve is plotted.

标准预览图