Wuxi YUTONG

  Honing is a unique abrasive machining process utilising hard tooling and perishable abrasives such as stones or diamonds. The stones are rotated with a lubricant under controlled pressure to produce a cross-hatch pattern on the surface of the cylinder. It is a simple process and a smaller part of the total process of a  hydraulic cylinder repair or rebuild. A finishing operation, primarily for the internal cylindrical surfaces of parts, that uses a fine-grain abrasive tool in the form of rods, or sticks, mounted on a honing head, or hone. The abrasive rods are pressed against the surface being machined, and the honing head, which is attached to the spindle of a honing machine, performs rotational and reciprocating motions. Honing is one of the last operations performed on a part; it follows boring, broaching, reaming, or grinding. Advantages of cylinder barrel honing : Improved lubrication Uniform wear Longer seal life Correct minor surface irregularities Correct geometrical issues

  Hydraulic cylinder want to operate effectively, the cylinder’s ID must be precisely round and have a mirror-like surface finish to ensure a tight seal between it and the mating internal piston. This is commonly achieved through skiving and subsequent roller burnishing inside a tubular workpiece. Skiving uses a set of carbide blades positioned around the diameter of a tool to slice away chips and create a geometrically round bore. Roller burnishing , a cold-working process, uses multiple rollers to compress the peaks of material left behind after skiving to generate an extremely smooth surface finish. Burnishing also introduces a residual stress layer into the cylinder wall, which improves cylinder fatigue life. The skiving roller burnishing tool is a multifunctional tool used widely in the manufacturing of hydraulic cylinders and compared to honing the advantages are: • 80-90% saving of machine time which reduces tool costs per meter of tube length. • Produces super finish surface