Production requirements for medical titanium rods

When titanium rod manufacturers produce medical titanium rods, you need to pay attention to some details and grades.

 Medical titanium rod implementation standards:

Executive standard: GB/T 13810-2007, ASTM F67, ASTM F136

The ingots used for the production and processing of materials shall be smelted by vacuum consumable electric arc furnace or EB furnace smelting and vacuum consumable electric arc furnace, and the number of smelting shall not be less than two.

Brand of medical titanium rod production:

Ti6AL4VELI, GR1, GR2, GR3, GR5

 Precautions for medical titanium rods:

1. The chemical composition of the product meets the requirements of the corresponding brand in GB/T3620.1, and the H content in pure titanium, TC4 and TC4ELI should not exceed 0.010%. When the buyer re-inspected, the allowable deviation of the chemical composition should meet the requirements of GB/T3620.2.

2. Dimensions and allowable deviations The dimensions of the product should be measured with corresponding precision measuring tools, and the positive and negative tolerances should be guaranteed according to customer requirements.

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Benefits of titanium alloy chopsticks

Limited by traditional techniques and costs, traditional Chinese chopsticks are generally made of wood and bamboo. But wooden chopsticks are prone to mold and bacteria. There are a variety of chopsticks on the market today, including plastic chopsticks, iron metal chopsticks and titanium alloy chopsticks. So what are the advantages and disadvantages of titanium alloy chopsticks and ordinary wooden chopsticks?

Titanium is called a space metal. It is suitable for the aerospace industry because of its lighter weight and greater hardness (titanium alloy is far better than aluminum alloy, comparable to stainless steel). At the same time, it is non-toxic, rust-free, non-magnetic and extremely corrosion-resistant, so it is often Used as a stent implanted in the human body, it can be said that it is the metal with the highest affinity with the human body.

Therefore, using titanium alloy chopsticks is harmless to the body, and alloy chopsticks are relatively slippery to use. Then I don’t know if the alloy material you mentioned is harmful to the human body. The advantage of alloy chopsticks may be that it is easier to clean and will not grow mold.

Titanium alloy chopsticks material safety and sanitation alloy chopsticks have passed the food-grade sanitation and safety inspection; non-adsorbent, more durable. Because the surface of the chopsticks body is not absorbent, the chopsticks body is not easy to be corroded and become old (the chopsticks will become brighter and brighter after using for a long time). It is non-absorbent and easy to clean. No detergent is needed for cleaning. Just put it in warm water and wipe it dry with a clean cloth and put it in a high-temperature disinfection cabinet for sterilization. It will truly be clean, hygienic and refreshing.

Titanium alloy chopsticks are tough and resistant to high temperature, not easy to bend, and not easy to deform; flammable and non-spontaneous; high temperature resistant and can be disinfected in a sterilization cabinet. The quality of the material is different, and the upper limit of high temperature resistance is different. Shengrui Titanium Edition said that long-term use of alloy chopsticks is harmless to the body, and alloy chopsticks are relatively slippery. The advantage of alloy chopsticks may be that it is easier to clean and will not grow mold.

After comparing for so long, it can be seen that titanium alloy chopsticks are not harmful to the human body, and they are easy to clean, and they are not suitable for mold growth and bacteria. They are a good helper at home.

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What are the five characteristics of titanium plate?

Features:

1. The oxide film on the surface of the titanium seed plate is equivalent to a good durable wear-resistant hair separating agent. The use of the titanium seed plate saves the separating agent, makes the electrode plate easy to peel, and eliminates the pre-treatment process of the seed plate. The board is half lighter than the copper seed board.

2. The service life of the titanium seed plate is more than 3 times that of the copper seed plate and can reach 10 to 20 years depending on the operating conditions

3. The electrolytic copper produced from the titanium seed plate has a dense crystal structure, a smooth surface and high quality.

4. Since the titanium seed plate does not need to be coated with a separating agent, it can avoid the pollution of the copper electrolyte.

5. Increase the production capacity and reduce the production cost of electrolytic copper, thereby having better economic benefits

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Precautions for use of titanium rod filter and cleaning method

Titanium alloy plates and titanium plates are mainly used to manufacture various containers, reactors, heat exchangers, distillation towers, pipes, pumps and valves in the petrochemical machinery manufacturing industry. Titanium can be used as a titanium cathode and condenser in power stations, as well as environmental pollution control devices. The hardness of steel is higher than that of titanium plate, but the specific strength or tensile strength of titanium alloy is higher than that of high-quality steel. Titanium alloy has good heat resistance, low temperature toughness and fracture toughness, so it is mostly used as aircraft engine parts and rocket and missile structural parts. Titanium alloy can also be used as fuel and oxidant storage tanks and high-pressure vessels. At present, titanium alloys are used to make automatic rifles, mortar seat plates and recoilless gun launch tubes.

1. Memory function

Titanium-nickel alloy has one-way, two-way and omnidirectional memory effects at a certain ambient temperature, and is recognized as the best memory titanium alloy. Pipe joints are used in engineering for the hydraulic system of fighter jets; the oil pipeline system of oil complexes; the parabolic mesh antenna with a diameter of 500mm made of 0.5mm wire is used on aerospace vehicles; used in medical engineering to make snoring Treatment; Titanium plates are made into screws for fracture healing. The above applications have achieved obvious results.

2. Superconducting function

The niobium-titanium plate exhibits a superconducting function with zero resistance when the temperature is lower than the critical temperature.

3. Hydrogen storage function

Titanium-iron alloy has the property of absorbing hydrogen, which can store a large amount of hydrogen safely, and release hydrogen in a certain environment. This is very promising in hydrogen separation, hydrogen purification, hydrogen storage and transportation, and the manufacture of heat pumps and batteries that use hydrogen as energy.

Titanium dioxide, the oxide of the titanium plate, is a white powder and a better white pigment, commonly known as titanium white. In the past, the main purpose of mining titanium ore was to obtain titanium dioxide. Titanium dioxide has strong adhesion, is not easy to undergo chemical changes, and is always white. Especially valuable is that titanium dioxide is non-toxic. It has a high melting point and is used to make refractory glass, glazes, enamel, clay, and high-temperature laboratory utensils.

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Heat treatment of titanium alloy

Commonly used heat treatment methods are annealing, solution and aging treatment. Annealing is to eliminate internal stress, improve plasticity and structural stability, and obtain better overall performance. Usually, the annealing temperature of α alloy and (α＋β) alloy is selected at 120～200℃ below the (α＋β)-→β phase transformation point; the solution and aging treatment are rapid cooling from the high-temperature zone to obtain martensite α′ phase and metastable Then the meta-stable phases are decomposed by heat preservation in the middle-temperature zone, and the fine and dispersed second phase particles such as the α phase or compounds are obtained to achieve the purpose of strengthening the alloy. Usually (α+β) alloys are quenched at 40～100℃ below the (α＋β)─→β phase transformation point, and metastable β alloys are quenched at 40～80℃ above the (α＋β)─→β phase transformation point. The aging treatment temperature is generally 450～550℃.
In summary, the heat treatment process of titanium alloy can be summarized as:
(1) Stress relief annealing: the purpose is to eliminate or reduce the residual stress generated during processing. Prevent chemical attack and reduce deformation in some corrosive environments.
(2) Complete annealing: the purpose is to obtain good toughness, improve processing performance, facilitate reprocessing and increase the stability of size and structure.
(3) Solution treatment and aging: The purpose is to improve its strength. α titanium alloy and stable β titanium alloy cannot be strengthened heat treatment, and only annealing is carried out in production. α+β titanium alloy and metastable β titanium alloy containing a small amount of α phase can further strengthen the alloy through solution treatment and aging.
In addition, in order to meet the special requirements of the workpiece, the industry also uses metal heat treatment processes such as double annealing, isothermal annealing, β heat treatment, and thermomechanical heat treatment.
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The characteristics and application scope of titanium container and titanium equipment

Titanium materials have the characteristics of high hardness, lightweight, and corrosion resistance. Due to the superior performance and characteristics of titanium materials, they are made into titanium equipment and are widely used in many fields such as industry and chemical industry.
(1) Titanium has stronger corrosion resistance than stainless steel and aluminum in many media. Moreover, titanium has a light specific gravity and high specific strength.
Titanium is easy to produce dense titanium oxide passivation film on its surface in air and oxidizing, neutral aqueous medium, which makes the electrode potential of titanium significantly positively shift and greatly improves the thermodynamic stability. The passivation coefficient is used to express the degree of improvement of the chemical stability of the metal after passivation, iron is 0.18, nickel is 0.37, molybdenum is 0.49, chromium is 0.74, aluminum is 0.82, and titanium is 2.44.
(2) Titanium does not have the low-temperature brittleness problem like ferritic steel. Titanium can be used as a low-temperature container with a temperature as low as -269 degrees, but because austenitic stainless steel, aluminum, copper, etc. can also be used as a low-temperature container, It is also cheaper than titanium, so titanium is actually rarely used in low-temperature fixed containers. In aviation and aerospace, titanium is used as a mobile cryogenic container. It is important to use titanium's high specific strength, lightweight and characteristics.
(3) Carbon steel, low alloy steel, generally stainless steel, and aluminum have poor corrosion resistance in seawater, saltwater and other chlorine-containing media. Titanium has unique and excellent corrosion resistance, and about 50% of titanium containers are used To resist the corrosion of chlorine-containing media.
(4) Since the corrosion resistance of titanium is caused by the surface oxide film, general industrial pure titanium and titanium alloys are not resistant to corrosion in strong reducing media such as high-temperature hydrochloric acid. Ti-32Mo is resistant to hydrochloric acid corrosion, but its plasticity and process properties are poor. It has not been included in the pressure processing titanium standard, nor is it included in this standard as titanium for containers.
(5) Titanium fuming nitric acid, dry chlorine, methanol, trichloroethylene, liquid dinitrogen tetroxide, molten metal salt, carbon tetrachloride and other media under certain conditions may cause combustion, explosion or stress corrosion to cause titanium container If a malignant accident occurs, titanium containers should be avoided or used with caution for these media.
(6) Titanium will burn in pure oxygen with a temperature of more than 500 degrees or in the air with a temperature of more than 1200 degrees. Therefore, the titanium container must not be exposed to open flames in contact with air and oxygen to avoid burning of the titanium container.
(7) Titanium materials and titanium containers are generally not required to assess impact toughness.
(8) Titanium has excellent corrosion resistance. More than 90% of the industrial pure titanium TA1 and TA2 are used in the civil industry to make various titanium equipment, and 3/4 of this titanium equipment are used to make titanium containers. Therefore, China's titanium container occupies a pivotal position in the titanium industry.
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Development characteristics of titanium alloy materials and titanium product processing technology

Due to the high manufacturing cost of titanium alloys, in order to reduce costs, the competitiveness of titanium alloys in the entire metal material market has been improved at a lower price. It is generally believed that titanium has incomparable superior performance compared with other materials, but the price of titanium often discourages consumers (especially automakers). The emergence of high-quality, low-cost titanium alloys will certainly help the popularization and application of titanium and titanium alloys.
Judging from the application status at home and abroad and the development of titanium processing technology, the plastic processing technology of titanium and titanium alloys will develop in the following directions in the future:
1) High performance, that is, the development of alloys with higher service temperature, higher specific strength, higher specific modulus, better corrosion resistance and wear resistance.
2) Multi-function, namely the development of titanium alloys with various special functions and uses, such as high damping, low expansion, constant resistance, high resistance, resistance to electrolytic passivation and hydrogen storage, shape memory, superconductivity, low modulus biomedical Other titanium alloys, and further expand the application of titanium and titanium alloys.
3) Deepen the research of traditional alloys, improve the practical performance of existing alloys, and expand the application range of traditional alloys through the improvement of equipment and processes.
4) Adopt advanced processing technology and large-scale continuous processing equipment to develop continuous processing technology, direct rolling technology, cold forming technology and near-net forming technology to improve the production efficiency, yield and product performance of titanium alloys.
5) Reduce costs, develop alloys that contain no or almost no precious metal elements, and add cheap elements such as iron, oxygen and nitrogen, and develop titanium alloys that are easy to process and shape, easy to cut, and alloy elements and master alloys are cheap. Develop titanium alloys and use banned materials to increase the recovery rate and utilization rate of banned titanium. This is particularly important for reducing the cost of civilian titanium alloys.
6) Use advanced computer technology to simulate the deformation and processing of the workpiece, predict the evolution of the metal microstructure, and even predict the mechanical properties of the product (yield strength, tensile strength, elongation, hardness, etc.). ), and design or improve molds and tooling; analyze and process test results, reduce test volume, improve work efficiency, and reduce development costs.
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