Self-lubricating long-life hard alloy bead string and preparation method and application thereof

CN118218682BActive Publication Date: 2026-07-24ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
Filing Date
2023-11-06
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing cemented carbide brazed beads fall off during use due to wear and breakage of the steel wire rope, and uneven wear is caused by inconsistent protrusion height of cemented carbide particles, affecting service life and cutting efficiency.

Method used

The design incorporates self-lubricating, long-life cemented carbide beads. By dividing the substrate into multiple working zones along the axial direction, the cemented carbide particles in the central working zone are positioned higher than those at both ends. These particles are embedded in the inner wall of the substrate's through-holes, utilizing graphite lubrication to reduce friction and extend service life.

Benefits of technology

It extends the effective cutting time of the carbide beads, reduces the friction between the substrate and the wire rope, improves the service life and cutting efficiency of the wire saw, and has good brazing density.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN118218682B_ABST
    Figure CN118218682B_ABST
Patent Text Reader

Abstract

The present application relates to the field of hard alloy brazing string bead, in particular to a self-lubricating long-life hard alloy string bead and its preparation method and application. The string bead comprises a base, a lubricating column and hard alloy particles; the hard alloy particles are welded on the outer surface of the base; the hard alloy particles are welded on the outer surface of the base; along the axial direction of the base, the outer surface of the base is provided with a plurality of working zones, and the cutting edge height of the hard alloy particles is sequentially reduced from the working zone in the middle of the base to the working zones at both ends of the base; the center of the base is provided with a circular through hole, a plurality of clamping grooves are arranged on the side wall of the through hole, the clamping grooves extend along the axial direction of the base, and the lubricating column is embedded in the clamping grooves. The string bead has the advantages of self-lubrication and long service life.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • CN102975292A

  • CN112958838A