This instrument is used to determine the softening point of various asphalt (viscous petroleum asphalt, viscous shale asphalt and soft coal tar pitch after distillation test, etc.), and can be used for various industrial and mining enterprises, scientific research institutions and laboratories for related asphalt Determination and experimental study of softening point.
The asphalt material test piece is placed in a copper ring of specified size, and a steel ball of specified weight and size is placed on the test piece, and then the test piece is heated at a specified speed. After the test piece begins to soften, the steel ball falls to the specified height. The temperature is the softening point of the specimen, expressed in °C.
The instrument consists of the following parts: ring frame, copper ring parts (copper ring (8), steel ball (5) and steel ball positioning ring (6)) thermometer.
During the experiment, the copper ring (8) was placed on the corresponding hole of the middle orifice plate (7), the steel ball (5) was placed on the copper ring (8), and positioned by means of the positioning ring (6). There is a water level marking line on the ring frame. The distance between the upper plane of the lower deck (9) and the lower plane of the middle orifice plate (7) is 25.4 millimeters.
