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Medical high-strength Ti-6Al-4V alloy wire and preparation technique and application thereof

A ti-6al-4v, high-strength technology, used in the field of preparation of medical high-strength Ti-6Al-4V alloy wire, can solve the problems of particularly high lubricant requirements and surface scratches, and reduce machining allowances , The effect of improving strength and operability

Active Publication Date: 2016-09-28
DALIAN SUNNY TITANIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cold working technology has many advantages, due to the characteristics of cold drawing technology, lubricants are required, and the requirements for lubricants are particularly high (Hong Quan, Qi Yunlian, Zhao Yongqing, Yang Guanjun, New research on titanium alloy wire processing technology Progress, Titanium Industry Progress, 2003, 2: 1-4), if there are phenomena such as sticking, demoulding, and breaking, it is easy to produce defects such as surface scratches

Method used

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  • Medical high-strength Ti-6Al-4V alloy wire and preparation technique and application thereof
  • Medical high-strength Ti-6Al-4V alloy wire and preparation technique and application thereof
  • Medical high-strength Ti-6Al-4V alloy wire and preparation technique and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The production process of the medical Ti-6Al-4V alloy wire with a diameter of 2.0mm for manufacturing children's intramedullary nails, its implementation steps are as follows:

[0046] (1) Melting

[0047] The raw material is grade 1 sponge titanium, and the sponge titanium, aluminum vanadium alloy, aluminum beans, iron powder, and titanium dioxide are mixed according to a certain proportion, and then pressed with a press to form an electrode. Put it into a vacuum consumable arc melting furnace and melt it 3 times to make alloy ingot.

[0048] (2) forging

[0049] The ingot is heated to 1050℃~1150℃ by an electric furnace, and the blank is forged Final forging temperature ≥ 830°C.

[0050] (3) Double rolling with large deformation

[0051] Use an electric furnace to heat to 900°C-950°C (±5°C), hold time for 60-90min, and finish rolling temperature ≥ 800°C.

[0052] (4) cold drawn

[0053] Will After the blanks are subjected to temperature-controlled hot-draw...

Embodiment 2

[0073] The production process of the medical Ti-6Al-4V alloy wire with a diameter of 3.5mm for manufacturing children's intramedullary nails, its implementation steps are as follows:

[0074] (1) Melting

[0075] The raw material is grade 1 sponge titanium, and the sponge titanium, aluminum vanadium alloy, aluminum beans, iron powder, and titanium dioxide are mixed according to a certain proportion, and then pressed with a press to form an electrode. Put it into a vacuum consumable arc melting furnace and melt it 3 times to make alloy ingot.

[0076] (2) forging

[0077] The ingot is heated to 1050℃~1150℃ by an electric furnace, and the blank is forged Final forging temperature ≥ 830°C.

[0078] (3) Double rolling with large deformation

[0079] Use an electric furnace to heat to 900°C-950°C (±5°C), hold time for 60-90min, and finish rolling temperature ≥ 800°C.

[0080] (4) cold drawn

[0081] Will After the blanks are subjected to temperature-controlled hot-draw...

Embodiment 3

[0101]The production process of the medical Ti-6Al-4V alloy wire with a diameter of 4.0mm for manufacturing children's intramedullary nails, its implementation steps are as follows:

[0102] (1) Melting

[0103] The raw material is grade 1 sponge titanium, and the sponge titanium, aluminum vanadium alloy, aluminum beans, iron powder, and titanium dioxide are mixed according to a certain proportion, and then pressed with a press to form an electrode. Put it into a vacuum consumable arc melting furnace and melt it 3 times to make alloy ingot.

[0104] (2) forging

[0105] The ingot is heated to 1050℃~1150℃ by an electric furnace, and the blank is forged Final forging temperature ≥ 830°C.

[0106] (3) Double rolling with large deformation

[0107] Use an electric furnace to heat to 900°C-950°C (±5°C), hold time for 60-90min, and finish rolling temperature ≥ 800°C.

[0108] (4) cold drawn

[0109] Will After the blanks are subjected to temperature-controlled hot-drawi...

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Abstract

The invention relates to a medical high-strength Ti-6Al-4V alloy wire and a preparation technique and application thereof and belongs to the technical field of metal material preparation. The medical high-strength Ti-6Al-4V alloy wire comprises, by mass, 5.9%-6.3% of Al, 4.0%-4.3% of V, 0.10%-0.16% of O, 0.14%-0.22% of Fe and the balance Ti. The preparation technique comprises the steps of smelting, forging, two times of large-deformation rolling, cold drawing, intermediate annealing, temperature-control hot drawing, stress relief annealing of a semi-finished product, one-pass cold drawing, straightening and cutting-off, stress relief annealing, polishing and obtaining of a finished product. The medical high-strength Ti-6Al-4V alloy wire and the preparation technique and application thereof have the beneficial effects that the Ti-6Al-4V alloy wire is prepared through the technical process that heat machining, cold drawing and temperature-control hot drawing are combined, and the Ti-6Al-4V alloy wire has the advantages that the mechanical performance is high, the dimensional precision is high, the surface smoothness is high, and the structure property uniformity is good.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and relates to a preparation process for medical high-strength Ti-6Al-4V alloy wire used for manufacturing children's intramedullary nails. Background technique [0002] Titanium and titanium alloys have the advantages of high human compatibility, low density, low elastic modulus, corrosion resistance to body fluids, and excellent mechanical properties, and are widely used in surgical orthopedic operations. Titanium alloy rods, plates, and wires are mainly used to manufacture connecting rods, bone plates, and bone nails for surgical trauma and spinal repair, and are implanted in the human body as force-bearing devices. Among them, the diameter range of the intramedullary nail for children is 2.0-4.0mm, which is a kind of metal wire, which is implanted in the medullary cavity of the bone and used to repair long bone fractures in the human body. The implantation of the intramedu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22F1/18C21D9/52
CPCC21D9/525C22C14/00C22F1/183
Inventor 钟功诚白树玉陶晓杰孙蕾
Owner DALIAN SUNNY TITANIUM IND
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