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Special-shaped titanium alloy capillary tube processing method

A processing method, titanium alloy technology, applied in the field of metal material processing, to achieve the effects of high production flexibility, good quality, and high process integration

Inactive Publication Date: 2015-03-25
QINGDAO MATE RUIOU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies in the existing production, the invention provides a processing method for titanium alloy special-shaped capillary tubes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of processing method of titanium alloy rectangular capillary tube material:

[0026] (1) Homogenization treatment of titanium alloy ingots, heat preservation at 900°C for 8-12 hours, and air cooling;

[0027] (2) Machining to remove scale and risers before forging, the initial forging temperature is 800°C-900°C, the final forging temperature is 750°C, and the final forging size is 50mm×50mm×800mm;

[0028] (3) Rolling the forged square bar, the rolling start temperature is 800°C to 900°C, the final rolling temperature is 750°C, and the rolling final size is Φ8.0mm;

[0029] (4) Grinding, rounding, and grinding the Φ8.0mm rolled bar, and the final size is Φ7.5mm;

[0030] (5) Carry out the oxidation treatment of 780 ℃~850 ℃ to rolled bar;

[0031] (6) Pulling the strip, the process is as follows:

[0032] Φ7.5mm~Φ6.1mm drawing temperature is 850℃~800℃;

[0033] Φ6.1mm~Φ4.1mm drawing temperature is 800℃~750℃;

[0034] Φ4.1mm~Φ2.6mm drawing temperature is 780℃~...

Embodiment 2

[0038] A processing method and steps of a titanium alloy arc-shaped capillary are as follows:

[0039] Steps (1)~(6) are identical with embodiment 1,

[0040] (7) After annealing heat treatment of Φ1.6mm, the annealing temperature is 800℃~900℃, and then drawing Φ1.6mm→Φ1.5mm→δ0.8×2.2mm arc material, Φ1.6mm→0.8×2.2 mm adopts cold drawing process, according to oval → oval → arc → arc mold matching process, Φ1.6mm → ellipse (Rx1.3, Ry1.8) → ellipse (Rx1.1, Ry2.0) → δ0 .9×2.2 arc → δ0.8×2.2 arc, and finally online straightening annealing, the annealing temperature is 600℃~720℃.

Embodiment 3

[0042] A processing method and steps of a titanium alloy regular hexagonal capillary are as follows:

[0043] Steps (1)~(5) are identical with embodiment 1,

[0044] (6) Pulling the strip, the process is as follows:

[0045] Φ7.5mm~Φ6.1mm drawing temperature is 850℃~800℃;

[0046] Φ6.1mm~Φ4.1mm drawing temperature is 800℃~750℃;

[0047] Φ4.1mm~Φ2.6mm drawing temperature is 780℃~730℃;

[0048] Φ2.6mm~Φ1.4mm drawing temperature is 780℃~730℃;

[0049] (7) After annealing heat treatment of Φ1.6mm, the annealing temperature is 800°C~900°C, and then drawing Φ1.4mm→Φ1.25mm→side length 0.7mm regular hexagonal, Φ1.4mm→side length 0.7mm regular hexagonal Using cold drawing process, according to the circular→square→polygon→polygon mold matching process, Φ1.6mm→Φ1.25mm→square (1.0×1.6)→side length 0.9mm regular hexagon→side length 0.8mm regular hexagon→side length 0.7mm square hexagonal bar, and finally carry out online straightening annealing, the annealing temperature is 600 ℃ ~ 72...

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Abstract

The invention discloses a special-shaped titanium alloy capillary tube processing method which comprises the following steps: coiling a titanium alloy capillary tube which is drawn to be a certain specifications on a reel; rotating the reel to release the capillary tube coiled on the reel; after the capillary tube is treated through a heating mechanism, feeding the capillary tube into a mold with a circular pore, reducing the diameter, and feeding the capillary tube into a cooling device; performing cold-drawing processing continuously by using molds of different pore shapes; selecting molds with different pore shape series according to the shape of a finished product special-shaped material to draw special-shaped materials with cross sections of a certain shapes. A product produced by using the method is high in quality stability, high in finished product rate, good in quality, excellent in mechanical property and elasticity, and good in subsequent processing property, and the processing method can be widely applied to the field of production and processing of intravascular stents and catheters for minimally invasive surgery.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to a processing method of a titanium alloy special-shaped capillary tube. technical background [0002] Biomedical titanium alloy special-shaped capillary tubes are used as medical device materials for minimally invasive surgery. The miniaturization of products is the main development direction. Among them, special-shaped materials are an important product type, and 80% of them belong to special-shaped materials with superelastic properties. At present, titanium alloy special-shaped capillary tubes produced by traditional processing methods have many shortcomings, such as: 1. The production process is complicated and the degree of mechanization is not high; 2. The mechanical properties and elasticity of special-shaped materials are not ideal and cannot meet the requirements for subsequent use; 3. The stability of product quality is not high; 4. It is difficult to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/06
CPCB21C37/06
Inventor 岑伟郭雷
Owner QINGDAO MATE RUIOU NEW MATERIAL TECH CO LTD
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