| Abstract:To address the challenge of real-time detection of the working clearance of the refiner, a method is proposed for online measurement of grinding disc wear using a wear rod. Indirect detection of micro wear of different wear rod materials was carried out using the resistance method. Through wear tests on Q235 low carbon steel, 40Cr alloy steel, HSS high-speed steel, and cast steel, the relationship between voltage (U) and wear amount (X) under different materials and shapes of cast steel was explored. The influence of current on the voltage-wear amount curve was also investigated, and a quadratic regression model was established to describe the relationship between voltage and wear amount. Research has shown that under a given current, the U-X curves of the four materials and different shapes of cast steel exhibit an overall increasing trend; As the wear increases, the voltage of square and cylindrical cast steel increases uniformly and significantly. The current basically does not affect the U-X curve variation trend of square and cylindrical cast steel. The performance indicators RMSE and MAE for predicting the wear of cylindrical cast steel are 0.00568 and 0.00466, respectively, which proves that the regression model has a better wear prediction effect. |