Silicon carbide roller rod has the characteristics of high temperature bearing capacity, high temperature resistance, oxidation resistance, long-term use without bending, no deformation, long service life and so on, so Jiangxi silicon carbide manufacturers teach you how to identify the quality of silicon carbide roller rod? Then talk to silicon carbide manufacturers about “how to identify the quality of silicon carbide rollers” identification methods
1. The selection of standard silicon carbide roller rods, select different specifications of porcelain roller standard rods according to needs, and use metal standard rods with diameters close to the selected porcelain rollers (straightness level is not less than 9, length greater than the selected porcelain rollers) and place them flat on the workbench, so that the selected porcelain rollers are close to the metal rods and rotate the selected porcelain rollers 360°.
2. Use a feeler gauge to measure the gap between the two, less than 0. A 2mm talent can be used as a standard bar. Measurement according to the specifications of the silicon carbide roller rod under test, select a porcelain roller standard rod close to its diameter, lay the porcelain roller standard rod flat on the workbench, make the sample close to the porcelain roller standard rod, rotate the sample 360°, and measure the gap between the two with a feeler gauge, that is, the straightness tolerance, as a percentage of tube length.
3. Measurement of the dimensional deviation of the roundness, taper and outer diameter of the porcelain roller: at 100mm from both ends of the porcelain roller, the index value is 0. A 02mm vernier caliper measures the outer diameter of the porcelain roller and the outer diameter perpendicular to it in the same cross-section, to 0. 02mm, take the difference between two measured values of the same section as the roundness value, and the value as the measurement result; Take the difference between the average of the outer diameters at both ends as the taper.
4. Intercept a porcelain roller about 650mm long, cool it after drying, and quickly insert it into the electric furnace at a specified temperature, with an insertion depth of about 400mm; The two ends of the porcelain roller are supported, and the temperature difference in the length direction is not more than ±5 °C, and after 10min of heat preservation, it is quickly taken out, placed flat on the refractory bracket, cooled to room temperature in the air, and tested for cracks and breaks.