Steps for repairing scratches on the surface of hydraulic cylinders

Thread Content

1. Use an oxy-acetylene flame to heat and scratch the affected area, in order to drive out the oil that has penetrated the metal surface; continue heating until no sparks are produced and the oil has carbonized； 2. Using the unworn surface as a reference, create a flat plate or a curved plate ； 3. Treat the scratched area using power tools for surface treatment; grind to a depth of more than 1 millimeter, and create grooves along the edges of the scratches, preferably dovetail grooves. Scratch the ends and deepen the holes to change the stress conditions ； 4. Clean the surface with acetone or anhydrous ethanol to ensure it is clean, dry, and rough ； 5. Strictly follow the mixing ratio specified for the Sorey SD7101 material, and mix thoroughly until the color is uniform with no variations ； 6. Apply to the scratched surface ； The first layer should be thin, even, and cover the entire scratched area to ensure the best adhesion between the material and the metal surface. After applying the material to the entire repair area, press it repeatedly to ensure that it fills the space completely and reaches the desired thickness, being slightly higher than the surface of the undamaged area ； 7. It takes 24 hours for the material to reach its full performance levels at 24°C; to save time, the curing time can be shortened by using an iodine-tungsten lamp or a heat blower ； 8. After the material has cured, use tools such as fine oil stones, sandpaper, or scrapers, in combination with a pre-made scraper, to grind away any material that is above the reference surface, so that it is leveled; the construction is then complete ； 9. To ensure the proper operation of the equipment, it is necessary to ensure: strict and careful installation ； Remove the putty and impurities remaining in the cleaning equipment ； Replace the lubricating oil and improve the equipment’s lubrication system ； Replace the lubricating oil filter.