METHOD OF DETERMINING FRICTION COEFFICIENT OF DISPERSE MATERIALS

摘要

The invention relates to testing techniques for determining the frictional properties of particulate materials. The purpose of the invention, h- increasing the accuracy of determining the coefficient of friction as a function of vibration parameters. First of potrebIzobretenie relates to test engineering, namely to methods for determining the frictional properties of particulate materials. The purpose of the invention - Definition of the friction coefficient depending on the vibration parameters. 1 is a diagram of an apparatus for implementing the method; FIG 2 - curled emoy power motor which rotates kontrobrazets mounted on its shaft, torque values ​​determined for given resistance kontrobraztsa fixed parameters of vibration exerted to the container with the motor mounted thereon without particulate material. Then, the particulate material is placed in a container and kontrobraztsom determined value torque resistance to the rotation in the same kontrobraztsz fixed parameters of the vibration and the value of the coefficient of friction is calculated by the formula -a i) (M | -. Mj) / S, where fi - coefficient of friction at 1 x-values ​​of the vibration parameters; a) - rotational speed kontrobraztsa, Mi - torque resistance to the rotation kontrobraztsa without particulate material, with 1 x-values ​​of the vibration parameters; M | - torque resistance to the rotation kontrobraztsa in the particulate material at 1 x values ​​of the vibration parameters; S - kontrobraztsa square, is luminant in the particulate material. 2 yl. ate dence with the coefficient of friction of the vibration frequency. Scheme 1 shows a cylindrical kontrobrazets, analyzed particulate material 2, the motor 3, the measurement unit 4 ,. container 5, the vibrator 6. The process is carried out as follows. 00 0 § xj