Characteristics of Honed Tube Processing Raw Materials Part 1
Release time:
2026-04-22
I. High Machining Accuracy
For some small and medium-sized through holes, the cylindricity can reach within 0.001mm. For some parts with uneven wall thickness, such as connecting rods, the roundness can reach 0.002mm. For large holes, the roundness can also reach 0.005mm. If there are no annular grooves or radial holes, straightness within 0.01mm/1m is also possible. Honing has higher machining accuracy than grinding because during grinding, the bearing supporting the grinding wheel is located outside the honed hole, which will cause deviation. Grinding has poor accuracy for small holes. Honing generally only improves the shape accuracy of the machined part. To improve the positional accuracy of the part, some necessary measures need to be taken, such as using a panel to improve the perpendicularity of the end face of the part to the axis.
II. Good Surface Quality
The surface has a cross-textured pattern, which is beneficial for the storage of lubricating oil and the maintenance of the oil film. It has a high surface support ratio (the ratio of the actual contact area between the hole and the shaft to the mating area between them), thus it can withstand larger loads, is wear-resistant, and thereby improves the service life of the product. Honing speed is low (a fraction of the grinding speed), and the honing stone makes surface contact with the hole, resulting in low average grinding pressure per abrasive grain. This minimizes heat generation on the workpiece during honing, leaving almost no thermal damage or altered layer on the workpiece surface, and minimizing deformation. The honed surface is virtually free of embedded sand and extruded hardened layers.
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