medicinsk titanmetal
Medicaltitanium-rod.html> titanium rods, medical titanium wires and medical titanium plates are used to manufacture artificial joints, bone plates and screws for bone and joint injuries caused by internal and external injuries and tumors in the human body, and are now widely used in clinical practice. They are also used in hip joints (including femoral heads), knee joints, elbow joints, metacarpophalangeal joints, interphalangeal joints, mandibles, artificial vertebrae (spinal orthotics), heart pacemaker shells, artificial hearts (heart valves), artificial dental implants, titanium-nickel dental orthodontics, and titanium mesh in skull plastic surgery.
The requirements for implant materials can be divided into three aspects: the biocompatibility of titanium rods, titanium wires, titanium forgings, and titanium plates with the human body, the corrosion resistance of the materials in the human body environment, and the mechanical properties of the materials. As long-term implant materials, there are 7 specific requirements:
① Corrosion resistance;
② Biocompatibility;
③ Excellent mechanical and fatigue properties;
④ Toughness;
⑤ Low elastic modulus;
⑥ Good wear resistance in the assembly;
⑦ Satisfactory price.
Surgical implant materials mainly include: metals, polymers, ceramics, etc. Metal materials include stainless steel, cobalt-based alloys, and titanium-based alloys.
The comparison of material properties with bone properties and the characteristics of implant materials can show the characteristics of implant materials. Stainless steel is cheap and easy to process, but its corrosion resistance and biocompatibility are not as good as titanium alloys; cobalt-chromium alloys have better corrosion resistance than titanium alloys, but have a higher density; titanium and titanium alloy rods, wires, plates and other materials are increasingly valued due to their high specific strength, good biocompatibility and resistance to body fluid corrosion. The disadvantages of titanium alloys are poor wear resistance, difficulty in casting, and poor processing performance.
The existing medical (surgical implant) titanium and titanium alloy rods, wires and plates are as follows:
① Industrial pure titanium;
② Ti6Al4V and Ti-6Al-4VELI alloys;
③ Ti-6Al-7Nb alloy;
④ New β-type titanium alloy;
⑤ Ti-Ni alloy
Titanium and titanium alloy grades for medical (surgical implants)
1. Pure Titanium (ASTM F67, GB/T 13810-2007, ISO 5832-2): Gr1, Gr2, Gr3, Gr4
9. Ti-13Nb-13Zr: Near β state
2. Ti-6Al-4V ELI (ASTM F136, ASTM F620, GB/T 13810-2007): α+β state
10. Ti-12Mo-6Zr-2Fe: β state
3. Ti-6Al-4V (ISO 5832-3, GB/T 13810-2007): α+β state
11. Ti-15Mo: β state
4. Ti-6Al-7Nb (ASTM F1295): α+β state
12. Ti-16Nb-10Hf: β state
5. Ti-5Al-2.5Fe (ISO 5832-10): α+β state
13. Ti-15Mo-5Zr-3Al: β state
6. Ti-5Al-3Mo-4Zr: α+β state
14. Ti-15Mo-3Nb: β state
7. Ti-15Sn-4Nb-2Ta-0.2Pd: α+β state
15、Ti-35.3Nb-5.1Ta-7.1Zr: β state
8. Ti-15Zr-4Nb-2Ta-0.2Pd: α+β state
16. Ti-29Nb-13Ta-4.6Zr: β state
In the medical industry, when metal materials are used, they must be harmless to the human body. When metals corrode, metal ions can be dissolved, which will affect the cell tissues of organisms (human bodies). Therefore, metal materials that are not easy to corrode and have high corrosion resistance should be selected. Titanium is a highly corrosion-resistant material. Medical metal materials range from stainless steel series to cobalt-based and titanium-based alloy series, and the proportion of titanium and titanium alloys is increasing. The amount of titanium used in the medical industry worldwide is about 1,000 tons per year. In the medical industry, when metal materials are used, they must be harmless to the human body. When metals corrode, metal ions can be dissolved, which will affect the cell tissues of organisms (human bodies). Therefore, metal materials that are not easy to corrode and have high corrosion resistance should be selected. Titanium is a highly corrosion-resistant material. Medical metal materials range from stainless steel series to cobalt-based and titanium-based alloy series, and the proportion of titanium and titanium alloys is increasing. The amount of titanium used in the medical industry worldwide is about 1,000 tons per year.
The larger the specific surface area of titanium materials, the easier it is to hydrogenate, and vice versa. The composition of titanium materials has a particularly important effect on the hydrogenation process. Pure titanium is easy to hydrogenate, while titanium alloys are slightly worse. Among them, Ti-17 (i.e., Ti-5A1-2Sn-2Zr-4Cr-4Mo) cannot be hydrogenated and powdered, and the reason is still unclear. The hydrogenation resistance of titanium is first related to the properties of the surface oxide film of titanium. Because the film is very dense, it becomes an effective barrier layer for hydrogen to penetrate titanium, so this oxide film must be removed. Different removal methods are used for different film properties. If the titanium material with oil stains is not purified, the oil stains will decompose at high temperature during the hydrogenation process, and the precipitated carbon will adhere to the titanium surface, becoming a barrier layer on the titanium surface, reducing the effective surface area of the titanium surface and thus reducing the hydrogenation rate. Medical titanium materials, titanium rods, titanium alloys, and titanium plates manufacturers should look for Zhuohangxin Metal Special Materials.
The processing of titanium alloy titanium rods and titanium alloy mold titanium plates has the following difficulties:
① Due to the low thermal conductivity of titanium, the friction heat generated at the tip of the tool is almost entirely concentrated on the blade and the rake surface of the tool, and the tip temperature is high and easy to wear.
② Due to the small elastic modulus, the workpiece is easy to bend during deep cutting, and an anti-vibration frame needs to be installed during processing.
③ Due to the large rebound and obvious anisotropy of the material, the processing accuracy will be affected.
④ Due to the strong high-temperature chemical activity, surface contamination is easy to occur during processing.
⑤ Due to the high hardness of the titanium surface oxide layer and the air absorption layer, the tool is seriously worn. According to the above situation, titanium cutting processing should follow the following basic principles:
① Use low-speed processing. Usually the cutting speed of titanium should be 25%~50% or lower than the cutting speed of steel with the same hardness.
② Use a large feed rate. It is mainly to avoid friction between the tool and the surface hard layer. The feed rate has little effect on temperature rise.
③ Use sharp tools. Once the tool becomes blunt, it must be replaced immediately.
④ Use sufficient cutting fluid (lubricating coolant). Commonly used cutting fluids include 5% sodium chloride solution, 5%~10% water-soluble oil aqueous solution, emulsified oil, sulfide oil, engine oil, etc. ) Turning titanium turning should use high-speed steel or carbide tools, and machine tools and fixtures with good rigidity should be selected. Titanium should not be contained in cemented carbide.
Zhuohangxin Metal Medical Titanium Alloy Material Production
Zhuohangxin Metal is a professional medical titanium and titanium alloy products, medical metal and non-metallic materials technology development, manufacturing, technical services and technical consulting; metal deep processing and surface treatment; industrial metal and non-metallic equipment design and manufacturing; medical titanium materials, medical titanium alloys, medical titanium alloys, medical titanium alloys, medical standard titanium alloys, military standard titanium alloys, ultrasonic knife titanium alloys, ultrasonic titanium alloys, imported substitution titanium alloys, dental titanium alloys, dental titanium materials, implant titanium alloys, domestic titanium alloys, titanium plates, dental plates, casting titanium alloys, plant titanium materials, implant titanium alloys. The company currently has professional technical staff, providing employees with a broad development platform and growth space, providing customers with high-quality products and services, and is well received by employees and customers. Honesty and trustworthiness are the business requirements of the enterprise, and are also our basic principles of being a person. The company is committed to creating high-quality medical titanium materials, medical titanium alloys, medical standard titanium alloys, and military standard titanium alloys. The company is deeply engaged in medical titanium materials, medical titanium alloys, medical standard titanium alloys, and military standard titanium alloys, and is accumulating greater energy to expand into a broader space and broader fields.
