Production technology for medical TA3 sheet materials

Abstract

The invention relates to a production technology for medical TA3 sheet materials. The technology comprises the following steps: slabs are subjected to production and roll type hot rolling, strip coils are subjected to annealing, shot blasting, acid pickling, cold rolling, degreasing and cutting and splitting, the sheet materials are subjected to annealing and shot blasting, and the TA3 sheet materials are obtained. According to the invention, one-chip production is replaced by a roll type production; for medical TA3 sheet materials of 4.0-6.2 mm, 2-3 heating numbers and semi-finished product processing procedures between firing can be omitted; for TA3 sheet materials of 2.0-4.0 mm, 2-3 heating numbers can be omitted, and 2-3 rolling processes and semi-finished product processing procedures can be omitted, and the total processing procedures can be reduced by more than 30%; 4-6 tons of the TA3 sheet materials can be produced for one batch; the production technology has the advantages of low cost and high efficiency.

Description

【Technical field】 [0001] The invention relates to a production process of TA3 plates, in particular to a production process of medical TA3 plates. 【Background technique】 [0002] It is well known that in recent years, biomedical metal materials have maintained an annual growth rate of 15-20%. Titanium and titanium alloys are close to natural bone due to their high specific strength and elastic modulus, good corrosion resistance, excellent biocompatibility and processing and forming properties, which are increasingly used in the field of orthopedic implants. [0003] At present, joint, trauma and spine products are the three mainstream products in the Chinese market in orthopedic implants, among which trauma products account for about 40% of the largest scale. In 2013, the market size of trauma implants in China exceeded 2.5 billion yuan. The proportion of titanium plates used in TA3 metal bone plates in such products is showing an increasing trend year by year; with the inc...

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Problems solved by technology

[0003] At present, joint, trauma and spine products are the three mainstream products in the Chinese market in orthopedic implants, among which trauma products account for about 40% of the largest scale. In 2013, the market size of trauma implants in China exceeded 2.5 billion yuan. The proportion of titanium plates used in TA3 metal bone plates in such products is showing an increasing trend year by year; with the increasing precision requirements of national standards for titanium metal bone plates, and medical precision processing equipment has strict requirements on the size and thickness of raw materials. The requirements for tolerance and same-plate difference are strict, so that medical device enterprises have gradually increased the requirements for titanium plate thickness tolerance and same-plate difference. At present, domestic titanium production enterprises in China adopt single-piece rolling method. The tolerance is generally between 0-0.35mm, and the difference between the same plate is controlled between 0-0.2mm. The thickness tolerance of cold-rolled TA3 plates is generally between 0-0.2mm, and the difference between the same plate is controlled between 0-0.15mm, and the single Sheet rolling will lead to large fluctuations in the physical and chemical performance indicators of the same batch of plates; at present, the fluctuations in thickness tolerance, same-plate difference and finished plate performance have greatly increased the difficulty of subsequent processing for medical enterprises; and how to reduce the medical The thickness tolerance and same-plate difference of TA3 plates are the key to the production of medical TA3 plates

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