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Preparation method for titanium alloy bar for surgical implants

A technology of surgical implants and titanium alloys, applied in the field of titanium alloys, can solve problems such as the density not meeting medical standards, poor quality and performance of titanium alloy rods, etc., to ensure performance and metallographic structure, improve quality and Performance, the effect of improving compactness

Inactive Publication Date: 2015-02-18
BAOJI YONGSHENGTAI TITANIUM IND
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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 provide a method for preparing titanium alloy rods for surgical implants, which solves the problems that the titanium alloy rods prepared by the existing methods have poor quality and performance and the compactness cannot reach the medical standard

Method used

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Examples

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Effect test

preparation example Construction

[0024] The preparation method of the titanium alloy rod for surgical implant of the present invention is specifically implemented according to the following steps:

[0025] Step 1, Billet Preparation

[0026] Titanium alloy ingots that meet the requirements of GB / T13810-2007 standard are selected as blanks. The selected titanium alloy ingots are composed of the following components according to mass percentage: Al5.5~6.5%, V3.5~4.5%, Fe≤0.2%, C≤0.08%, N≤0.03%, H≤0.006%, O≤0.13%, the balance is Ti, and the sum of the mass percentages of the above components is 100%; the defective parts are removed after ultrasonic flaw detection, and then divided into small sections Chamfer on the lathe;

[0027] Step 2, billet forging

[0028] The titanium alloy ingot is heated to 1000 ℃ ~ 1150 ℃ in a resistance furnace and kept for 3 to 5 hours, and then hammered with equipment to make the deformation rate reach 50 to 60%, and then cut into finished bars after pier drawing 6 to 9 times. Ti...

Embodiment 1

[0039] Step 1, Billet Preparation

[0040] Titanium alloy ingots that meet the requirements of GB / T13810-2007 standard are selected as blanks. The selected titanium alloy ingots are composed of the following components according to mass percentage: Al5.5%, V4.0%, Fe0.1%, C0.08% , N0.01%, H0.006%, O0.10%, the remainder is Ti, and the sum of the above component mass percentages is 100%; cut off the defective part after ultrasonic flaw detection, and then divide it into small sections for chamfering on the lathe ;

[0041] Step 2, billet forging

[0042] The titanium alloy ingot is heated to 1100 ℃ in a resistance furnace and kept for 4 hours, and then the deformation rate reaches 50% with a hammering device, and then it is cut into finished bars after pier drawing 6 times, which requires a small weight of titanium alloy billets;

[0043] Step 3, deformation processing

[0044] After grinding the small titanium alloy billet obtained in step 2 (removing cracks and defects), hea...

Embodiment 2

[0054] Step 1, Billet Preparation

[0055] Titanium alloy ingots that meet the requirements of GB / T13810-2007 standard are selected as blanks. The selected titanium alloy ingots are composed of the following components according to mass percentage: Al5.8%, V3.5%, Fe0.15%, N0.02% , H0.004%, O0.13%, the remainder is Ti, and the sum of the above component mass percentages is 100%; after ultrasonic flaw detection, the defective part is removed, and then it is divided into small sections for chamfering on the lathe;

[0056] Step 2, billet forging

[0057] The titanium alloy ingot is heated to 1000 ℃ in a resistance furnace and kept for 5 hours, and then the deformation rate reaches 60% with a hammering device, and then the pier is pulled for 9 times and then cut into a finished bar, which requires a small weight of titanium alloy billet;

[0058] Step 3, deformation processing

[0059] After grinding the small titanium alloy billet obtained in step 2 (removing cracks and defects...

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Abstract

The invention discloses a preparation method for a titanium alloy bar for surgical implants, which is obtained by the following steps: preparing a blank, cogging and forging, performing deformation process, performing annealing treatment, thermally straightening, performing finishing treatment, and performing secondary polishing. The preparation method of the titanium alloy bar for the surgical implants, disclosed in the invention, improves the quality and performance of the titanium alloy bar by means of three-time straightening and three-time annealing treatments, and can meet the export requirements. Besides, after being subjected to heating and heat preservation, a titanium alloy ingot is hammered by hammering equipment till the deformation rate of the ingot reaches 50%-60% and then subjected to compression and drawing for 6-9 times, so that the compactness of the titanium alloy is improved. Furthermore, the temperatures in the processes of the forging and rolling a product in the middle stage are both lower than the phase transition point of 970 DEG C of the titanium alloy, so that the performance and a metallurgical structure of the titanium alloy bar are ensured.

Description

technical field [0001] The invention belongs to the technical field of titanium alloys, and relates to a preparation method of a titanium alloy rod for surgical implants. Background technique [0002] Due to its excellent biocompatibility, corrosion resistance and comprehensive mechanical properties, titanium alloys for surgical implants have been widely used in the production of a variety of orthopaedic and dental medical devices, such as artificial joints (hump, knee, shoulder, ankle, etc.). , elbow, wrist, finger joints, etc.), bone trauma products (intramedullary nails, plates, screws, etc.), orthopedic implant products such as spinal orthopaedic internal fixation systems, and orthodontic products (brackets, rings, orthodontic arches, etc.) silk, anchorage implants). [0003] The commonly used processes for the preparation of existing titanium alloy rods for surgical implants are batch preparation - billet forging - cutting - deformation processing - annealing treatment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18C22C14/00
Inventor 陈胜明王荣生马宝全
Owner BAOJI YONGSHENGTAI TITANIUM IND
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