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Processing method of pure titanium curved plate used as body implant

A processing method and implant technology, applied in the directions of outer plate, inner bone synthesis, fixator, etc., can solve the problems of unsuitability for mass production, unstable shape of titanium plate, difference in tissue properties, etc., and achieve fast efficiency and uniform performance. Stable, high-precision effects

Active Publication Date: 2012-01-25
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pure titanium arc-shaped plates for human implants are mainly used for orthopedic bone plates. At present, the main raw material for orthopedic bone plates is titanium plates. Titanium plates can only be processed and applied after stamping, turning and milling processes. Because cold stamping is easy to crack, stamping Thermal deformation stamping is generally used, but the shape of the titanium plate after thermal deformation stamping is unstable, and the structure and properties of each other will be very different; although the turning and milling process has high precision, the work efficiency is very low, and it is not suitable for mass production.

Method used

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  • Processing method of pure titanium curved plate used as body implant
  • Processing method of pure titanium curved plate used as body implant
  • Processing method of pure titanium curved plate used as body implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Prepare R by the following process ×4.6×13.9mm curved plate, the structure of the curved plate is as follows Figure 4 shown.

[0044] According to the GB / T13810-2007 standard, select TA2 in the Ф14mm pure titanium rod. The tensile strength of TA2 is 450-500Mpa, the elongation is 30-45%, and the roughness is 3.2μm. Heat TA2 to 400°C and keep it for 30min. Warm rolling is adopted, and a two-roll mill is used for flat rolling to a thickness of 6.0mm-6.5mm×width 21mm-21.5mm, and vertical rolling to a width of 16.0mm-16.4mm×thickness of 6.8mm-7.0mm, and the pass processing rate is 10%. The processing rate is controlled at 30%, and then cold rolled, flat rolled to a thickness of 5.5mm-5.8mm×width 17.0mm-18.0mm, and then passed according to the volume percentage of HF:HNO 3 :H 2 O=1:3:7 acid pickling, vertical rolling to width 14.0 mm -14.5mm × thickness 5.9 mm -6.0mm, bending to thickness 4.8 mm -5.2mm × width 14.0 mm -14.5mm, vertical Press to a thickness of 4.8 mm -5....

Embodiment 2

[0047] Prepare R by the following process ×3.3×10.4mm curved plate, the structure of the curved plate is as follows Figure 5 shown.

[0048] According to the GB / T13810-2007 standard, select TA3 in the Ф10mm pure titanium rod. The tensile strength of TA3 is 500-550Mpa, the elongation is 25-32%, and the roughness is 3.0μm. Heat TA3 to 500°C and keep it for 30min. Warm rolling, flat rolling to thickness 5.2mm-5.5mm×width 10.5mm-11.5mm, pass processing rate 20%, processing rate controlled at 40%, cold rolling, flat rolling to thickness 4.1mm-4.3mm×width 11.5 mm -12.4mm, and then according to the volume percentage HF:HNO 3 :H 2 O=1:3:7 acid pickling, vertical rolling to width 9.8 mm -10.3mm × thickness 4.3 mm -4.6mm, bending to thickness 3.6 mm -3.9mm × width 10.4 mm -10.8mm, vertical Rolled to a width of 9.5mm-10.0mm×thickness 3.6mm-3.9mm, accurate size width 10.4mm×thickness 3.3mm, the processing rate during the cold rolling process is 40%, and the processing rate from the ...

Embodiment 3

[0051] Prepare R by the following process ×18×6 curved plate, the structure of the curved plate is as follows Figure 6 shown.

[0052] According to the GB / T13810-2007 standard, select TA4 in the Ф18mm pure titanium rod. The tensile strength Rm of TA4 is 550-650Mpa, the elongation is 25-30%, and the roughness is 3.1μm. Heat TA4 to 600°C and keep it warm for 30min. First use warm rolling, flat rolling to thickness 7.2mm-7.5mm×width 22.0mm-22.5mm, vertical rolling to width 21.0mm-21.5mm×thickness 8.3mm-8.5mm, pass processing rate is 30%, processing rate control At 50%, then use cold rolling, flat rolling to a thickness of 7.2mm-7.5mm×width 22.0mm-22.5mm, and then pass through according to the volume percentage of HF:HNO 3 :H 2 O=1:3:7 acid pickling, vertical rolling to width 20.0 mm -20.5mm × thickness 8.0 mm -8.3mm, bending to thickness 8.0 mm -8.5mm × width 19.5 mm -19.8mm, precision Bending to thickness 7.2mm-7.6mm×width 19.5mm-19.8mm, vertical rolling to width 18.25mm-1...

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Abstract

The invention discloses a processing method of a pure titanium curved plate used as a body implant, which comprises the following steps: putting a billet into an atmosphere furnace for heating at the heating temperature of 400 DEG C-600 DEG C, insulating the billet for 30min, horizontally rolling the billet and then vertically rolling the billet, or only horizontally rolling the billet to obtain a square billet; then, sequentially carrying out horizontal rolling, pickling, vertical rolling, bending and vertical pressing on the square billet to obtain a formed billet; putting the formed billet into the atmosphere furnace for atmosphere annealing, wherein the heat treatment temperature is 550 DEG C-750 DEG C, the heat treatment time is 0.5-3 hours, the thermal tension straightening hydraulic pressure is 1.0Mpa-4.0Mpa, and the straightening length is 2.0m-4.0m; and carrying out surface treatment on the formed billet in a sand blasting and then pickling mode to obtain the pure titanium curved plate. The pure titanium curved plate prepared by the processing method of the pure titanium curved plate used as the body implant of the invention has high accuracy, high efficiency, uniform and stable performances and high processing efficiency, can not crack, and is suitable for production and processing in a large batch.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and relates to a processing method of a pure titanium arc-shaped plate for human body implants. Background technique [0002] Pure titanium arc-shaped plates for human implants are mainly used for orthopedic bone plates. At present, the main raw material for orthopedic bone plates is titanium plates. Titanium plates can only be processed and applied after stamping, turning and milling. Because cold stamping is easy to crack, stamping Generally, thermal deformation stamping is used, but the shape of the titanium plate after thermal deformation stamping is unstable, and there will be great differences in the structure and properties of each other; although the turning and milling process has high precision, the work efficiency is very low, and it is not suitable for mass production. Contents of the invention [0003] The purpose of the present invention is to provide a proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/80C22F1/18B21B1/38
Inventor 杜小联郭学鹏李军董卫选徐广胜周涛冯勇刘向宏
Owner 西部超导材料科技股份有限公司