A high-strength and toughness stainless steel wire for ophthalmic scalpels and its preparation method

By adjusting the stainless steel composition and process, high-strength and toughness stainless steel wire was produced, which solved the problem of insufficient materials for existing ophthalmic scalpels and achieved efficient production and low-cost high-performance ophthalmic scalpels.

CN119194216BActive Publication Date: 2025-09-09TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Application Number
CN202411610741.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-09-09
Estimated Expiration
2044-11-12

AI Technical Summary

Technical Problem

The stainless steel material of existing ophthalmic scalpels has insufficient strength and toughness, is difficult to process, and is expensive, which affects the surgical effect and the patient's medical experience.

Method used

By using Cu and Ca elements to replace part of Ni, stainless steel wire with nano-scale copper-rich phase and fibrous structure is prepared through hot rolling, solid solution, cold rolling, annealing, cold drawing and low-temperature liquid nitrogen treatment, thereby improving the strength and toughness of the material.

Benefits of technology

High-strength and toughness stainless steel wire with a yield strength of ≥1130MPa, a tensile strength of ≥1550MPa, and an elongation of ≥35% is prepared to meet the processing requirements of ophthalmic scalpels and reduce production costs.

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Abstract

The present invention belongs to the technical field of stainless steel, and specifically relates to a high-strength and toughness stainless steel wire for ophthalmic surgical knives and a preparation method thereof. The content of the precious element Ni is reduced, and the contents of the elements Cu and Ca are increased. By adopting a production process of hot rolling, solid solution, cold rolling, annealing, cold drawing, annealing, cold drawing and low-temperature liquid nitrogen treatment, the stainless steel wire having a precipitated nano-scale copper-rich phase and a fibrous microstructure is produced. The resulting stainless steel wire has a yield strength of 1130 MPa or greater, a tensile strength of 1550 MPa or greater, and an elongation of 35% or greater, meeting the processing requirements of ophthalmic surgical knives.
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