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Multi-pass continuous drawing method for medical stainless steel ultrafine wire

A technology of stainless steel and ultra-fine wire, applied in the direction of wire drawing dies, etc., can solve the problems of narrow application range of strength, poor finish, and low production efficiency, and achieve the elimination of internal stress and the precipitation of harmful carbides, uniform structure and composition, The effect of high production efficiency

Active Publication Date: 2020-06-30
宝鸡华沃新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a multi-pass continuous drawing method for medical stainless steel ultra-fine wire, which overcomes the strength application existing in the prior art 1: the wire processing method in the prior art Narrow range, poor toughness; 2: poor corrosion resistance, uneven dimensional tolerance, poor finish; 3: small production scale, incapable of large-scale production, low production efficiency, etc.

Method used

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  • Multi-pass continuous drawing method for medical stainless steel ultrafine wire
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specific Embodiment approach

[0033] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. .

[0034]At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without ...

Embodiment 1

[0036] The invention discloses a multi-pass continuous drawing method for medical stainless steel ultrafine wire, which comprises the following steps:

[0037] Step 1) Coating the Ф0.8mm stainless steel filament billet;

[0038] Step 2) performing a cold drawing on the stainless steel filament billets coated in step 1) to obtain ultra-fine stainless steel wires;

[0039] Step 3) performing on-line decoating treatment and on-line solid solution treatment on the stainless steel ultra-fine wire in step 2);

[0040] Step 4) performing secondary cold drawing and online degreasing treatment on the stainless steel ultra-fine wire that has undergone on-line decoating treatment and on-line solution treatment in step 3), to obtain a medical stainless steel ultra-fine wire with a bright surface.

Embodiment 2

[0042] The invention discloses a multi-pass continuous drawing method for medical stainless steel ultrafine wire, which comprises the following steps:

[0043] Step 1) Coating the Ф0.8mm stainless steel filament billet;

[0044] Step 2) performing a cold drawing on the stainless steel filament billets coated in step 1) to obtain ultra-fine stainless steel wires;

[0045] Step 3) performing on-line decoating treatment and on-line solid solution treatment on the stainless steel ultra-fine wire in step 2);

[0046] Step 4) performing secondary cold drawing and online degreasing treatment on the stainless steel ultra-fine wire that has undergone on-line decoating treatment and on-line solution treatment in step 3), to obtain a medical stainless steel ultra-fine wire with a bright surface.

[0047] Preferably, the coating treatment in step 1) is to coat the solid-solution stainless steel filament blank with a matte surface after alkali-acid washing treatment, and then coat the coa...

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Abstract

The invention discloses a multi-pass continuous drawing method for a medical stainless steel ultrafine wire. The method comprises the following steps that (1) a stainless steel fine wire blank of phi0.8mm is subjected to coating treatment; (2) the stainless steel fine wire blank subjected to coating treatment in the step (1) is subjected to primary cold drawing, and a stainless steel ultrafine wire is obtained; (3) the stainless steel ultrafine wire in the step (2) is subjected to online coating removal treatment and online solid solution treatment; and (4) the stainless steel ultrafine wiresubjected to online coating removal treatment and online solid solution treatment in the step (3) is subjected to secondary cold drawing and online oil removal treatment, and the medical stainless steel ultrafine wire with a bright surface is obtained. The obtained medical stainless steel ultrafine wire has the advantages of being high in strength, good in toughness and good in corrosion resistance, sizes are uniform, deviation is small, the surface brightness is high, the bright surface with metal luster is shown, the requirements of the medical stainless steel ultrafine wire are completely met, production efficiency is high, and the medical stainless steel ultrafine wire is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of alloy wire processing, and in particular relates to a multi-pass continuous drawing method for medical stainless steel ultra-fine wire. Background technique [0002] Due to its good biocompatibility, mechanical properties, body fluid corrosion resistance, excellent processing and forming properties and low cost, medical stainless steel has become a widely used medical consumable and medical tool material in clinical practice. Different from industrial stainless steel, medical stainless steel is required to maintain excellent corrosion resistance (including resistance to intergranular corrosion, stress corrosion and other localized corrosion), so as to prevent premature failure of medical devices, reduce the dissolution of harmful metal ions, and ensure the clinical safety of stainless steel implanted devices. App security. At present, stainless steel materials with a stable austenitic structure such as 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04B21C1/04B21C3/04C21D8/06
CPCB21C37/042B21C37/045B21C37/047B21C1/04B21C3/04C21D8/065
Inventor 牛中杰梁振伟梁园园
Owner 宝鸡华沃新材料有限公司
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