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Preparation method of low-modulus high-elastic beta-type titanium alloy dental arch wire

A technology of titanium alloy wire and titanium alloy, which is applied in the field of biomedical materials and dental arch wire processing, can solve the problem that titanium alloy dental arch wire cannot meet the requirements of use well, the preparation process of titanium alloy dental arch wire is complicated, and the manufacturing efficiency is low and other issues to achieve the effect of good product effect, improved corrosion resistance and high manufacturing efficiency

Inactive Publication Date: 2018-08-31
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-modulus high-elasticity β-titanium alloy material has a much lower elastic modulus than stainless steel, medium tensile strength and good plasticity. It can not only provide the long-lasting and gentle correction force required by orthodontics, but also meet the needs of medium- and long-term orthodontics The required displacement, as a substitute for stainless steel dental arch wire and as a supplement to nickel-titanium dental arch wire, has a good application prospect. However, the preparation process of titanium alloy dental arch wire is complicated and the manufacturing efficiency is low. The prepared titanium alloy dental arch wire Specifications and sizes can not meet the requirements of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Select the Ti-11Mo-5Zr-4Sn-3Nb titanium alloy hot-rolled bar with a specification of Φ25mm, and anneal the titanium alloy hot-rolled bar. The annealing temperature is 900°C, the annealing time is 30min, and the cooling method is air cooling; The final titanium alloy bar is forged on a rotary forging machine at low temperature, and processed into titanium alloy wire. The temperature is selected as 500°C, the feeding speed is 15mm / s, and the deformation of each pass is less than 40%. A Φ4mm titanium alloy round wire is obtained. . MoS 2The lubricant mixed with graphite emulsion is evenly coated on the surface of the Φ4mm titanium alloy round wire. Then, when the round wire is drawn with a round die, the drawing speed is 600mm / min, and the deformation of each pass is less than 15%. After 3 passes Pull out the Φ2.0mm round wire; then ultrasonically clean the Φ2.0mm round wire, and perform intermediate annealing, the intermediate annealing temperature is 800°C, the intermed...

Embodiment 2

[0034] Select the Ti-11Mo-5Zr-4Sn-3Nb titanium alloy hot-rolled bar with a specification of Φ20mm, and anneal the titanium alloy hot-rolled bar. The annealing temperature is 900°C, the annealing time is 30min, and the cooling method is air cooling; The final titanium alloy bar is forged on a rotary forging machine at low temperature, and processed into titanium alloy wire. The temperature is selected as 300°C, the feeding speed is 5mm / s, and the deformation of each pass is less than 20%. Φ3mm titanium alloy round wire is obtained. MoS 2 The mixed lubricant with graphite emulsion is evenly coated on the surface of Φ3mm titanium alloy round wire, and the round wire is drawn by a round die, the drawing speed is set at 400mm / min, the deformation of each pass is less than 15%, and Φ1.5mm is obtained after 3 passes Round wire, then Φ1.5mm round wire is ultrasonically cleaned, and intermediate annealed, the intermediate annealing temperature is 800°C, the intermediate annealing time ...

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Abstract

The invention provides a preparation method of a low-modulus high-elastic beta-type titanium alloy dental arch wire. The method conducts annealing treatment, low temperature rotary forging, multi-modedrawing, corresponding solution treatment and surface brightening treatment on titanium alloy bars to prepare the low-modulus high-elastic beta-type titanium alloy dental arch wire. The method fullyutilizes the characteristics of low strength and good elongation of a beta-type titanium alloy at a certain temperature, the deformation is increased and the number of pass is reduced by low temperature rotary forging, a clad layer is prepared on the surface of the dental arch wire, the color of the titanium alloy dental arch wire can be changed, and the use requirements of people can be met; anti-corrosion treatment is conducted on the titanium alloy dental arch wire, and the service life of the dental arch wire clad layer is prolonged. The preparation method of the titanium alloy dental archwire has the advantages of simple process, high manufacturing efficiency and good product effect, the prepared beta-type titanium alloy dental arch wire has good biocompatibility, low elastic modulusand high elasticity, and stable and mild corrective force and long-term moderate displacement can be obtained.

Description

technical field [0001] The invention relates to the technical field of dental arch wire processing and belongs to the field of biomedical materials, in particular to a method for preparing a low-modulus high-elasticity β-type titanium alloy dental arch wire. Background technique [0002] Tooth deformity is ubiquitous in people, and orthodontics can play the role of being attractive in appearance, reducing dental diseases, etc., and it is increasingly loved by people's attention. Orthodontics is to achieve the purpose of orthodontics through tooth movement or displacement, so that the teeth are arranged neatly, aligned up and down, and loose teeth are reduced and avoided. The metal wires currently used for orthodontics are orthodontic wires, also called dental arch wires, mainly nickel-titanium alloy wires and austenitic stainless steel wires. Nickel-titanium alloy wire has the characteristics of shape memory and superelasticity, soft and durable correction force, wide displ...

Claims

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Application Information

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IPC IPC(8): C22F1/18C22F1/02C25D7/06C23F11/08A61C7/20
CPCA61C7/20C22F1/02C22F1/183C23F11/08C25D7/0607
Inventor 刘汉源余森于振涛蔡虎袁思波韩建业刘少辉靳磊程军
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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