Honing oilstone with orderly-arranged abrasive particles and manufacturing method of honing oilstone

By using an ordered arrangement of honing stones, the problems of abrasive grain shedding and insufficient self-sharpening have been solved, improving the cutting efficiency and precision of the honing stones and achieving higher processing quality and stability, making it suitable for processing precision metal workpieces.

CN121156899APending Publication Date: 2025-12-19ZHENGZHOU HONGTUO PRECISION TOOLS CO LTD
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Patent Information

Application Number
CN202511419559.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-30
Publication Date
2025-12-19

AI Technical Summary

Technical Problem

Existing superhard honing stones are prone to failure under long-term operation, mainly due to insufficient bonding force between diamond or cubic boron nitride and the metal binder, resulting in abrasive grain detachment. Furthermore, the metal binder lacks self-sharpening properties, failing to quickly expose the underlying abrasive grains, thus affecting processing accuracy and efficiency.

Method used

A honing stone with high bonding strength and uniform abrasive grain distribution was prepared by ball milling and hot pressing of alloy powder, ceramic powder, silicon/tungsten diamond and polycrystalline cubic boron nitride, combined with electrodeposition technology.

Benefits of technology

It improves cutting efficiency and machining quality, enhances the life and precision stability of the grinding wheel, and is suitable for more precise honing environments, especially for machining precision and complex metal workpieces such as automotive engine blocks, hydraulic cylinders, and bearing rings.

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Abstract

The invention provides a honing oilstone with abrasive particles arranged in order and a manufacturing method of the honing oilstone, and belongs to the technical field of oilstones. Alloy powder, ceramic powder, silicon / tungsten plated diamond, polycrystalline cubic boron nitride and ethyl alcohol are mixed, ball-milled, ultrasonically dispersed uniformly and subjected to hot pressed sintering, a matrix is prepared, and the honing oilstone with abrasive particles arranged in order is prepared through the processes of pretreatment, surface activation, electro-deposition and aftertreatment. The fine honing oilstone is mainly used for machining precise, complex and high-hardness metal workpieces such as automobile engine cylinder bodies, hydraulic oil cylinders and bearing rings, the imported fine honing oilstone is replaced in the oil pump oil nozzle industry for the first time, and localization replacement of the fine honing oilstone is achieved.
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