Honing process and Skiving & Roller burnishing (SRB) process are the two main types of processes for manufacturing cylinder tube.
Tube Honing Process
While producing honed tubes, our factory uses the honing process to make smooth surface finishes of inside diameters; and to maintain exact tolerances on inside diameters.
Under the honing process, abrasive stones and paper are used to the ID of the tubes, which “grinds” stock away to remove surface imperfections from the cold drawing process; and to achieve the desired dimensional tolerances and surface finish. And normally we use cutting fluids to provide easy cutting action and also to remove the cut material from the bore.
Here below is an video which shows the cylinder tube honing operation.
Honing is a decrease velocity abrading process compared to grinding. Since less pressure and heat is made, the surface, precision and size of the finished product isn’t affected by heat stress. Precision cylinder tubes comprise excellent surface integrity and finish, high accuracy inner diameter tolerances. And an over all dimensions and geometry control that can not be achieved in faster cutting speeds.
Tube ID Skiving and Roller Burnishing (SRB)
The skived & roller burnishing process is a single pass operation that uses a cutting tool on the forward stroke, to machine to size, and uses roller bearings on the reverse stroke, to burnish the inside surface.
Here below video is an introduction of hydraulic cylinder tube skiving and burnishing.
Skiving and roller burnishing process is faster than honing process; and typically generates more precise tolerances and better inside surface finish control than honing.
Here below is the features of honed tubes by Skiving and roller burnishing process.
Inside Diameter Range: 60-500 mm
Length of SRB tube: Up to 14 meters
Surface Roughness: Max Ra 0.4 microns.
Inside Diameter Tolerance: ISO – H7, H8, H9 on request.
Here below picture describes the main advantages of the skiving and burnishing process for manufacturing cylinder tubes.
