Como uno de los principales honed tubing manufacturers in China, our factory Skyline manufactures and produces a wide size range of honed tubes and pipes for cylinders with various different materials. Here below is a brief introduciont about how the honed cylinder tubes are manufactured.
What is honing?
The honing process is a form of grinding and a processing method in finishing. Not only with high productivity, but also with high machining accuracy, the function is to improve the surface finish and wear resistance of the honed tubes.
How is honed tubing produced?
Here below is the processing technology of seamless honed tubes and itsmanufacturing processing steps.
Step 1. Raw Material selection:
Select round bars of suitable size that meet the standards as raw material bars for processing;
Step 2. Billeting
Free forging and heat treatment process: the steel round bar is processed by billeting, free forging and heat treatment;
Step 3. Straightening
Forging hammer straightening on the treated raw material bar;
Step 4. Making mother tubes by Hot Rolling, Hot extrusion or Hot piercing.
Make the mother seamless pipes from the round steel bars, through the manufacturing process of either Hot Rolling, Hot extrusion or Hot piercing.
Step 5. Cold drawing
Cold draw the seamless mother pipe to make cold drawn seamless tubes (CDS tube), and to make it pre-honed tubes.
Step 6. Honing on the tube inner diameter
The ID (inner diameter) of the tube is honed with honing stone, so that the through inner diameter of the tube can meet the size and machining accuracy requirements of seamless honed tubes;
Step 7. Inspection and packing:
Inspect the finished honed tubes according to customers’ requirements and corresponding standards, to ensure they can meet the required size and machining accuracy requirements, mechanical properties, chemical compostions, etc.
Honing is an effective machining method for machining inner diameter of the tubes and pipes, which not only has high productivity, but also has high machining accuracy. So sometimes Honed tube is also called Honed ID tubing. The seamless honed tube has good surface quality, less cutting allowance, good guiding performance, not easy to block, and can avoid and correct the geometric deviation of the machined inner diameter.
