What is the role of pure titanium?

Titanium shaped parts are parts used for machinery, made of titanium as raw materials. So, what role does titanium shaped parts pure titanium have?
Pure titanium is a silver-white metal with many excellent properties. The density of titanium is 4.54g / cm3, which is 43% lighter than steel and slightly heavier than the prestigious light metal magnesium. The mechanical strength is similar to that of steel, two times greater than aluminum and five times greater than magnesium. Titanium is resistant to high temperature and has a melting point of 1942K, which is nearly 1000K higher than gold and 500K higher than steel.
Titanium is a chemically active metal. When heating, it can interact with non-metal such as O2, N2, H2, S, and halogen. However, at normal temperature, a thin and dense oxide protective film is easily formed on the titanium surface, which can resist the effects of strong acids or even aqua regia, and exhibits strong corrosion resistance. As a result, the general metals become flawed in the acid solution while titanium is safe and sound.
Liquid titanium can dissolve almost all metals, so it can form alloys with many metals. Titanium steel made by adding titanium to steel is tough and elastic. Titanium and metals Al, Sb, Be, Cr, Fe, etc. generate interstitial compounds or intermetallic compounds.
The aircraft made of titanium alloy can carry more than 100 passengers than other aircraft made of the same weight. The manufactured submarine can resist both seawater corrosion and deep pressure, and its diving depth is 80% higher than that of stainless steel submarines. At the same time, titanium is non-magnetic, will not be discovered by mines, and has a good anti-custodial effect.
Titanium is "biological". In the human body, it can resist the corrosion of secretions and is non-toxic, suitable for any sterilization method. Therefore, it is widely used in the manufacture of medical devices, artificial hip joints, knee joints, shoulder joints, flank joints, skull bones, active heart valves, and bone fixation clips. When new muscle fiber rings are wrapped around these "titanium bones", these titanium bones begin to sustain the body's normal activities.
The titanium of titanium shaped parts is widely distributed in the human body, the content in the normal human body is not more than 15mg per 70kg bodyweight, and its role is not clear. However, titanium can stimulate phagocytic cells and enhance immunity.
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What are the five characteristics of titanium plates?

Features:
1. Titanium seed plate is an oxide film on the surface, which is equivalent to a good long-term wear-resistant hair release agent. The use of a gr7 titanium alloy plate saves the separation agent and makes the peeling of the electrode plate easy, eliminating the pretreatment of the seed plate The board is half lighter than the copper seed board.
2. The service life of the Grade 9 Titanium Plate is more than 3 times that of the copper seed plate, and it can reach 10 to 20 years according to the operating conditions
3. The crystalline structure of electrolytic copper made of titanium seed plate is dense, the surface is flat and smooth, and the quality is excellent.
4. Since the thin titanium plate does not need to be coated with a separating agent, the contamination of the copper electrolyte can be avoided.
5. Increase the production capacity and reduce the production cost of electrolytic copper, thus having better economic benefits

Titanium tube removes residue by heat treatment

When the hydrogen content in the titanium exhaust tube is too much, the impact toughness and notch tensile strength will drop sharply due to brittleness, so it is generally prescribed that the hydrogen content in the titanium threaded tube should not exceed 0.015%. In order to reduce the amount of hydrogen absorption, the parts should remove fingerprints, rolling mill marks, grease, and other residues before heat treatment. There is no moisture in the atmosphere of the heat treatment furnace. If the hydrogen content of the Gr23 Titanium Tube exceeds the allowable value, it must be removed by vacuum annealing. Vacuum annealing for dehydrogenation is generally maintained at 538-760 ° C and pressure below 0.066 Pa for 2-4 hours.
When the temperature does not exceed 540 ℃, the oxide film on the surface of the titanium tube will not be significantly thickened, and at a higher heat treatment temperature (above 760 ℃), the oxidation rate will rapidly accelerate, and at the same time, oxygen will expand into the material to form a diffusion layer— Pollution layer. The oxygen contaminated layer has a high brittleness ratio and causes cracks and damage on the part surface. There are mechanical processing methods (such as sandblasting, house cutting, etc.) or chemical methods such as pickling and chemical milling to remove the contaminated layer of oxygen. During the heat treatment, the heating time should be as short as possible on the premise of ensuring the heat treatment of the meteorite. It is performed in a vacuum furnace or a heating furnace of inert gas (argon, nitrogen, etc.). The appropriate application can also avoid or reduce the pollution generated by the titanium tube parts when they are heated in the air furnace.

How to improve the quality of titanium welded tubing?

Due to the strong activity of the Seamless Titanium Tube Grade 2, the welding temperature of the titanium tube, the protective effect of the shielding gas, and the welding environment are more stringent in the welding of the Grade 7 Titanium Tube, and a little carelessness will cause greater welding quality. If the impact is serious, the product will be scrapped. The practice has proved that: through the analysis of the main factors affecting the welding quality, the key welding process is determined, and the control of the environment, personnel, welding parameters and methods during the welding process is strengthened, which can effectively ensure that the welding quality of the titanium tube material is further improved. Improve to prevent the emergence of welding waste.
In recent years, a new type of gr9 titanium tube has been widely used. Because of its lightweight, high strength, and corrosion resistance, titanium alloys are widely used in aerospace, petrochemical, and machinery manufacturing fields, and are currently being used in the construction of piping systems for surface ships for the first time. However, because the titanium alloy is a highly active metal, it has a great affinity for oxygen, hydrogen, nitrogen, and other gases at high temperatures, that is, it has a strong ability to absorb and dissolve gases, especially during the welding process. This ability is accompanied by an increase in welding temperature, which is particularly strong. The practice has proved that if the absorption and dissolution of titanium alloys and oxygen, hydrogen, nitrogen, and other gases are not controlled during welding, the product will eventually be scrapped. Therefore, the welding of titanium pipe joints must be effectively prevented and controlled to meet the quality requirements of welding.

What should be paid attention to when filtering materials of titanium tubes?

Precautions:
1. If you want to use titanium plate filter material, you must not exceed its maximum working capacity.
2. When using the titanium plate as a filter material, be sure to prevent the titanium plate from being hit or scratched, and save it from contamination.
3. After using the titanium material, it should be cleaned and stored.
4. Before entering the work, the titanium plate filter material must be started before it can be adjusted to the normal working environment.
Titanium Coil Tube        titanium tube grade 9      Thin Wall Titanium Tube

Titanium product identification method and usage guide

The identification method of titanium is relatively simple. At present, there are more and more titanium products on the market. The most common ones are glasses, watches, necklaces and other jewelry, as well as medical, construction, power, industrial, etc. You can see the figure of titanium, so it is still necessary to distinguish titanium. Here are a few common methods for identifying titanium:

1. Titanium is non-magnetic, and magnets can be used to test titanium.

2. Different conductive properties, different metals have different conductive properties, and it is easy to judge the metal composition by testing the conductive properties of metals.

Third, titanium is generally white or silver-gray, and is easily oxidized and has a self-healing function, so even in excellent stainless steel can not be compared with titanium's stainless function.

At present, there are special requirements for some metals used on the human body. For example, some metals are not suitable for being close to the human body, which is easy to cause some allergies, lesions, or cancer. Therefore, some metals that are close to the human body must have strict metal composition indicators, which cannot be generalized, and we need to pay special attention when we identify metals.

At present, the common titanium metals on the market are mainly titanium alloys. There are not many pure titanium products. Although titanium metals are very good, they do not need such excellent metals in many places, but often different titanium alloys. The different characteristics exhibited are even more extensive than the application field of pure titanium, so in the process of our users, we must select the titanium products suitable for our own use according to our own needs.
 titanium flat rod              titanium heat exchanger pipe              Gr12 Titanium Sheet          

The basic principle of pickling titanium

The metal dissolves in the pickling solution, accompanied by the electron transfer on the metal atom, so the electrochemical corrosion phenomenon is the main cause. The result of metal atoms losing electrons is the formation of metal ions. For example, grade 5 titanium bar loses electrons in reducing acid and becomes trivalent titanium ion.
The pickling of titanium alloy rod processed materials is carried out in a mixed acid solution containing hydrofluoric acid or fluoride. When pickling, hydrogen ions may be reduced to form atomic hydrogen or molecular hydrogen. Atomic hydrogen has a tendency to diffuse into the metal, which may cause hydrogen embrittlement.
When titanium is pickled in a nitric acid solution containing fluoride ions, the gr5 titanium foil is oxidized and nitric acid is reduced. The final product is the formation of a titanium fluoride complex, water, and colorless nitric oxide.
If exposed to the atmosphere, nitric oxide quickly oxidizes into brown toxic nitrogen dioxide when it encounters oxygen in the air and volatilizes.
Therefore, when pickling, try to expel nitrogen dioxide quickly through ventilation. If about 0.5% H202 is added to the pickling solution, the NO will be oxidized in the solution and it will escape from the liquid surface so that the air pollution is appropriately reduced.
When pickling titanium wire in a nitric acid solution containing 5% -7% fluoride ion, if the mass fraction of oxidant nitric acid is less than 15%, the over-potential of various reduction reactions in the solution determines the hydrogen ion is more The chance of reduction, and after being reduced to hydrogen atoms, it will be sucked into the titanium in a certain ratio, diffuse to some parts of the alloy to gather or generate titanium hydride to cause hydrogen embrittlement. Therefore, in order to prevent the hydrogen absorption of titanium materials during acid pickling, the ratio of nitric acid to hydrofluoric acid should always be kept greater than 5. However, if the content of nitric acid is too large, the reaction will be slow, the production efficiency will be reduced, and the flue gas will be produced, making the operation difficult.

Titanium screws have high tensile strength and toughness

Titanium screws made of titanium alloy have high tensile strength and toughness, and can provide a higher preload than pure titanium abutment screws, especially to maintain the preload after cyclic loading. Titanium is known not to corrode, construction companies generally use titanium nails in knowledge, they will not rust and cause structural collapse. .

When screws are used for construction from other metals, they lose their strength, and stability is very common due to harsh weather conditions. The destruction of ordinary screws that perform additional renovations is an expensive business and therefore titanium is recommended. Their reliability means that these screws are suitable for important construction projects, especially the external structure. There are various kinds of titanium screws including hexagon bolts, flange bolts, washers and fenders.

Titanium also proves popular when it comes to choosing motorcycle axles. Common screws are made of steel, brass and bronze, and titanium is slowly replaced by their president. Titanium screws are also used in plastic surgery. They also seek special requirements by orthodontists in ways that make dental implants more stringent. This is because the implant is in the bone and does not depend on where the patient keeps it. Some clinical studies have shown that when titanium screws can be used to keep the implant in place, orthodontic treatment is successful in 97% of cases.

Titanium is biocompatible, and dental implants can be in place for 30 years or more. Titanium is also used in various other surgical methods because it is non-toxic and therefore accepted by the body. This metal has a similar modulus of elasticity, which means that adjacent bones do not deteriorate. If a titanium alloy is used, however, the stiffness becomes bone twice, which may cause deterioration

Titanium screws are made of metal of the same name and have unique properties that make them ideal for construction work as well as in certain types of surgery. Titanium is a low-density metal that does not corrode, which means that the screws it makes are often reliable. The strength of steel but half the density, titanium screws provide durability, but this comes at a price.

Gr12 Titanium Wire   forging titanium round bar   titanium metric screw

Application of titanium tubes and titanium alloy tubes in the field of coolers in China

At present, China's economy maintains rapid and healthy development, which provides a good market environment for the development of the domestic titanium industry. Domestic titanium for the chemical industry, titanium for power generation, titanium for marine development, titanium for the automobile industry, titanium for bioengineering, etc. have developed rapidly. Especially the recently launched large aircraft program in China has also greatly stimulated the demand for titanium materials in the domestic market. Both have become the main driving force for the development of the domestic titanium industry. This is not only a huge development opportunity for domestic titanium alloy production enterprises, but also a severe challenge to the domestic titanium alloy industry, which requires titanium alloy enterprises to improve the technical content of their products, optimize the industrial structure, and improve their own management level. It is believed that after several years of pursuit, China's titanium industry can play an increasingly important role in the global titanium industry.

Thin Wall Titanium Pipe    Grade 23 Titanium Tube   titanium threaded pipe

Maintenance and storage of titanium tubes and titanium alloy tubes:

1. Titanium alloy pipes and elbows should be inspected regularly to keep the surface clean, remove dirt, and store them in a ventilated place indoors. Do not stack them or store them in the open.

2. Titanium alloy pipe elbow ball valve, stop valve and gate valve are only used to be fully open or fully closed. It is not allowed to adjust the flow to prevent erosion of the sealing surface and accelerate wear.

3, the gate valve and the upper thread stop valve are equipped with an inverted sealing device. The handwheel is rotated to the uppermost surface to ensure that it will not rust and will not fall. Keep titanium pipes, titanium elbows, titanium heads, titanium tees and other titanium pipe fittings stored in a dry and ventilated environment, keep the pipes and pipe fittings clean and uniform, and store them accurately.

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TA9 (American Standard Gr7)

TA9 grade is mechanically and physically equivalent to TA2 grade, except that the gap element palladium is added to make it an alloy. Grade 7 has excellent weldability and characteristics and is the most corrosion-resistant of all titanium alloys. In fact, it is most resistant to corrosion in reducing acids.

TA9 grade is used for chemical processes and production equipment parts.

TA9 has extremely strong corrosion resistance, especially in reducing the acidic environment.

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Ti 5Al-2.5Sn

Ti 5Al-2.5Sn is a non-heat-treatable alloy, which can obtain good weldability and stability. It also has high-temperature stability, high strength, good corrosion resistance, and good creep resistance. Creep refers to the phenomenon that plastic strain occurs for a long time at high temperatures.
Ti 5Al-2.5Sn is mainly used in aircraft and fuselage applications and low-temperature applications.
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Decryption, the application of targets in vacuum plating

With the development of the times, in order to meet the requirements of safer, more energy-efficient, lower noise, and reduce pollutant emissions, vacuum plating has become a new environmental protection trend in the surface treatment process. Unlike ordinary plating, vacuum plating is more environmentally friendly. At the same time, vacuum plating can produce a black effect with a good gloss that cannot be achieved by ordinary plating.

Vacuum plating is basically a physical deposition phenomenon, that is, argon is injected in a vacuum state, and the argon gas hits the target. The separated components of the target are adsorbed by the conductive goods to form a uniform and smooth surface layer. In this electroplating process, the target material is very important. So what are the applications of the target material in the vacuum electroplating process? Today, will introduce you in detail.

Generally, the application of targets in vacuum plating has the following characteristics:

(1) Metal, alloy or insulator can be made into thin-film material.

(2) Multiple and complex targets can be made into thin films of the same composition under appropriate setting conditions.

(3) By adding oxygen or other active gas in the discharge atmosphere, a mixture or compound of a target substance and a gas molecule can be produced.

(4) The target input current and sputtering time can be controlled, and it is easy to obtain high-precision film thickness.

(5) Compared with other processes, it is beneficial to produce a large area of ​​the uniform film.

(6) The sputtering particles are not affected by gravity, and the positions of the target and the substrate can be freely arranged.

(7) The adhesion strength between the substrate and the film is more than 10 times that of the ordinary vapor-deposited film, and because the sputtered particles have high energy, the surface will continue to diffuse on the film-forming surface to obtain a hard and dense film. At the same time, this high energy makes the substrate as long as Crystals can be obtained at lower temperatures.

(8) The initial nucleation density of the thin film is high, and it can produce very thin continuous films below 10nm.

(9) The target has a long life and can be continuously and automatically produced for a long time.

(10) The target can be made into various shapes, with the special design of the machine for better control and efficiency

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Application Status of Titanium and Titanium Alloy Wire

Titanium and titanium alloy materials, as the leader in metal materials, have a series of excellent properties that are incomparable with other metal materials. Therefore, they have developed rapidly in recent years and have been rapidly and widely used in high-tech fields such as aerospace and military industry. The United States, Russia, Japan, China and other countries around the world attach great importance to the research and development of titanium alloys, continue to develop new titanium alloy materials, and expand the application of titanium and titanium alloys. As research continues and product lines increase, many titanium products, such as titanium wire, have also increasingly entered the field of various consumer goods.

1. Classification of titanium and titanium alloy wires

Titanium can be divided into pure titanium and titanium alloy based on whether it contains alloy elements, and titanium alloy can be divided into α titanium alloy and near α type alloy, (α + β) type alloy, and near β type according to its composition and room temperature structure. Alloys and β-type alloys. According to the different properties of titanium and titanium alloys, different wire materials can be prepared. The finished products of titanium and titanium alloy wires are generally in the hard state (Y) and the annealed state (M).

2. Application of titanium and titanium alloy wire

Titanium and titanium alloys have good corrosion resistance, high specific strength, non-magnetism, high biocompatibility, low resistance to ultrasonic waves, high sound permeability coefficient, hydrogen storage and good shape memory functions. The excellent characteristics of important use values ​​have led to important uses in many fields such as aerospace, petrochemicals, medical and health, automotive, construction, and sports and leisure products.

Titanium and titanium alloy wires, as an important variety of titanium materials, have made great progress in terms of output, specifications and applications. In the general sense, titanium and titanium alloy wire refer to titanium products supplied in the form of discs or circular wires. As far as the diameter is concerned, the division of rods and wires is not strict, and countries vary. And in recent years, due to its continuous development, the variety is increasing, which provides it with more choices in high-performance industrial supplies and consumer goods applications. The application status of titanium and titanium alloy wire is systematically introduced in the following aspects.

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Manufacture of nuclear submarines from titanium rods, titanium wires, and titanium plates

Russia is an international leader in the research and manufacture of titanium alloy submarines. It is also the first country to build a pressure-resistant shell with titanium alloy. During peak periods, the annual output of titanium alloy plates and tubes for submarines is as high as 10,000 tons, accounting for 1/3 to 1/2 of the annual output of titanium alloy processed materials. Titanium plates for submarine heat exchangers require good thermal conductivity. The shell material is required to have good toughness to resist the shock wave caused by the bomb explosion. The titanium plate (thick plate) for submarine shells is produced in St. Petersburg, and the ingots are provided by the Upper Salda Metallurgical Production Joint Company. In terms of the development level of the titanium industry and the scale of the use of titanium plates and wires in the shipbuilding industry, Russia is far ahead of all other countries in the world. As Russia is ahead of competitors such as the United States in the field of ship material research, its scholars have called on the government to formulate a recent shipbuilding plan to avoid losing its leading position and the development potential it has formed, while ensuring that the Russian Navy will continue to lead in the 21st century In other countries.
Since the 1960s, Russia has developed four generations of nuclear submarines. The world ’s first K162 all-titanium nuclear submarine was launched in December 1968 and has been in operation for more than 30 years. Environmental assessment has never happened. Russia built the first "ALFA" class nuclear submarine in 1970 and continued to build six more in the 1970s and 1980s. Each one used titanium rods, titanium wires, and titanium plates for about 3,000 tons. The maximum dive depth was 914m, which is light and fast.
In the 1980s, six "Typhoon" class ballistic missile nuclear submarines with titanium rods, titanium wires and titanium plates of 9000 tons were manufactured. The first "Typhoon" class nuclear submarine was built in 1980 and commissioned in 1984. Its underwater displacement is 33800t, and the underwater speed is about 27 knots. The "Typhoon" nuclear submarine is the largest submarine in the world. It has a double-shell structure. The non-pressure-resistant shell is made of high-strength and low-magnetic steel. The pressure-resistant shell is made of titanium alloy. Can carry 20 strategic missiles. The launch time of the sixth Typhoon submarine was at the end of 1989, and the Typhoon series will be retired at the beginning of the 21st century.
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Application of titanium flange in military industry

Due to the special requirements of space vehicles in reducing structural weight and improving structural efficiency, the aerospace and aerospace industries have always been the main targets for the promotion and application of titanium alloys. Especially in the early days of the development of titanium flanges, that is, in the 1950s, almost all titanium flanges were used to manufacture aviation aircraft. Only from the 1960s did it gradually expand to the petroleum, chemical, shipbuilding, power station, and other sectors. Even today, it can still be said that the development of aerospace and aerospace technology is the basic factor that promotes the advancement of titanium flanges. In turn, the emergence of new materials will also help the development and application of new aircraft.
Due to the performance characteristics of titanium flanges, it is preferentially used in aviation engines. It replaces aluminum flanges and some stainless steel and high-strength steels to make the main components of compressors, such as compressor rotor blades, disks, stator blades, and casings. Reduce structural weight and increase the weight-to-weight ratio. For example, the Soviet Union was equipped with a MiG-2l engine P11-300 in the early days, and its compressor was mainly a steel structure, while the latter improved P13-300 engine (equipped with MiG-21MF), it used a titanium compressor to make the thrust-to-weight ratio (The ratio of the thrust generated by the engine to the gravity of the perturbation engine) was increased from 5.38 to 5.83. In the 1970s, the Soviet-made P29-300 engine (equipped with MiG-23S) further increased the amount of titanium, so that the thrust-to-weight ratio reached 6.5. At present, the amount of titanium flanges used in aero engines has stabilized between 15-30%.
In terms of aircraft bodies, the application of titanium flanges was a little later. In the early days, it was mainly used to manufacture non-stressed components, such as heat shields and firewalls for the rear fuselage, but it quickly expanded to hydraulic components such as various joints and bulkheads. , Beams, landing gear, etc.
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Residual titanium recycling and production of processed materials

Titanium processing plants produce processed materials according to the current process, and the residual titanium produced accounts for about 40% of the input amount. The degree of residual titanium recycling is one of the key factors affecting the cost of processed materials. After years of work, great achievements have been made in the recycling of residual materials; rapid identification of the residual materials, crushing, descaling, degreasing, removing high-density inclusions, electrode preparation methods for adding residual materials, and melting processes have been solved A series of problems formed a complete set of residual material recovery and utilization tools to make various shapes of residual material can be recycled. In pure titanium ingots, the amount of residual titanium added has reached 20-30%. Using this process, more than 1,000 tons of residues have been recovered, so that the overall utilization factor reached about 1.5. In addition to the self-consumption arc furnace recovery of residual materials, a certain amount of experience has been accumulated in the use of plasma furnaces and condensing furnaces to recover residual materials. Hydrogenation and electron beam furnace melting have also been successful in recovering residual materials. At the same time, the use of residual materials has been extended to the steelmaking and smelting industries. In this way, all types of residual titanium have been recycled. The recycling of residual titanium in publishing processing plants has been basically solved.

At present, there are mainly four units engaged in the production of titanium processed materials in China. The production capacity of the processed material currently depends entirely on the production capacity of the ingot. The annual output of titanium processing materials has reached more than 1,000 tons, 18 alloy grades for industrial production, and 16 for industrial trial production. Although more than 80% of the current titanium processing materials are pure titanium, the alloys included in the national standard of Hequan and industrial trial production have undergone a lot of research and trial production. As long as necessary, these alloys can be produced according to requirements. The varieties of processed materials include plates, strips, foils, rods, tubes, wires, and various cakes and ring forgings, most of which are medium-sized products. In recent years, the rapid growth of titanium in the world, wide coils for welding pipes, large-scale forgings, and various profiles, etc., are still domestically added equipment and technical transformation before production. However, the size of the specifications and the increase of varieties have potential. As long as there is a need, the titanium processing plant can try to solve it.

In the development of titanium processing, we have not only formed a commonly used set of internationally produced alloy grades, varieties, and specifications, but also developed direct extrusion of ingots, anti-oxidation coatings, electrolytic removal of scale, and pipes. Warm rolling, titanium-copper composite rods and explosive compounding and rolling processes, most of which have been practically applied in production. For example, hundreds of tons of titanium-steel composite plates have been produced by the explosive compounding process, which has a good effect and plays an important role in the promotion of titanium materials.

Grade 1 Titanium Straight Wire    Gr9 Titanium Wire    surgical medical titanium wire    Grade 36 Titanium Bar

Titanium heat exchangers are widely used in various seafood breeding

Titanium heat exchangers are suitable for many places, such as for seafood farming, so what are the benefits of titanium heat exchangers for seafood farming? Titanium will explain to you that titanium heat exchangers are widely used in various seafood breeding.
Titanium heat exchangers can be seen from the root of titanium, and have always been very stable in terms of chemical substances. They can be seen from more occupations. They have excellent corrosion resistance. Titanium heat exchangers are cold liquids that transfer some heat. device of. Titanium heat exchangers are not easy to lose metal ions, so they can make full use of this non-magnetic feature to make heat exchangers for pharmaceutical and food applications. Because titanium has strong corrosion-resistance, the heat exchanger has a long service life and low maintenance costs during use. In addition, it has the advantages of small size and large heat exchange capacity, and the related equipment investment and operating costs will be reduced accordingly. Titanium heat exchangers are widely used in various seafood breeding due to the excellent properties of industrial pure titanium.
Grade 9 Titanium Wire    Grade 23 Titanium Tube    Grade 9 Titanium Rod    titanium forged block

The role of titanium plate in seawater purification

The main characteristics of titanium plate for desalination:
Low density, high specific strength (strength / specific gravity). The density of titanium is 4.51g / cm3, which is higher than aluminum but lower than steel, copper, and nickel. But the specific strength is at the top of the metal, 3 times that of stainless steel, and 1.3 times that of aluminum alloy; good corrosion resistance) Titanium is a very active metal, its equilibrium potential is very low, and the tendency of thermodynamic corrosion in the medium is large. But in fact titanium is very stable in many media, such as titanium is resistant to corrosion in oxidizing, neutral and weak reducing media. This is because titanium has a great affinity with oxygen. In the air or in an oxygen-containing medium, a dense, strong, inert oxide film is formed on the titanium surface, which protects the titanium substrate from corrosion. It will heal or regenerate quickly even due to mechanical wear. This indicates that titanium is a metal with a strong tendency to passivate. Titanium oxide film always maintains this characteristic when the medium temperature is below 315 ℃ 3. Good heat transfer performance Although the thermal conductivity of metallic titanium is lower than that of carbon steel and copper, the wall thickness can be greatly reduced due to the excellent corrosion resistance of titanium. Moreover, the surface and steam heat exchange method is droplet condensation, which reduces the heat group. If the surface is not fouled, the thermal resistance can be reduced, and the heat transfer performance of titanium is significantly improved.
Good heat resistance
The new titanium alloy can be used for a long time at a temperature of 600 ° C or higher.
Low-temperature titanium alloys, such as titanium alloys, which have good low-temperature resistance, have higher strength as the temperature decreases, but their plasticity has not changed much. The property that the tensile strength and its yield strength are close to titanium indicates that its yield ratio (tensile strength / yield strength) is high, which indicates that the metal titanium material has poor plastic deformation during forming. Because the ratio of the yield limit of titanium to the modulus of elasticity is large, the springback capacity of titanium during molding is large.
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Development of titanium and titanium alloys in China's aerospace applications

Titanium and titanium alloys are important materials in the fields of aerospace, chemical industry, metallurgy, and other fields. China's titanium resource reserves and raw material production capacity are the world's first, but the ability to convert to titanium is only 50%. The large-scale titanium forgings urgently needed by the aerospace and other industries have long relied on imports, and the constraint bottleneck is the lack of complete equipment and technology for the preparation of heavy-duty non-ferrous numerically controlled titanium electrodes. The development of high-performance and low-cost aerospace materials is an inevitable trend in the development of aerospace models in the future. How to optimize the technology to improve the performance of titanium alloys and reduce the cost of titanium alloys will be a strategic key issue for the development of the titanium industry in the future.

The future development direction of titanium and titanium alloys used in China's spacecraft is 1. High performance, that is, the development of high strength and toughness titanium alloys with good strength and plasticity and titanium alloys with better temperature resistance; 2. Low Cost-effectiveness, that is, the development of titanium alloys containing no or less precious metal elements, and titanium rods and plates that are easy to form and cut; 3, high processing rates, that is, the development of powder metallurgy, superplastic forming-diffusion connection ( SPF-DB), precision casting and other technologies. With the development of China's aerospace technology, powder titanium alloys and cast titanium alloys will be widely used. The increased speed of spacecraft and the demanding requirements for lightweight components, low cost and high reliability have brought opportunities for the application and development of powder titanium alloys and cast titanium alloys. Compared with the cast titanium alloy, the powder titanium alloy has a smaller and uniform internal structure and has no component segregation, and its performance is better than that of the cast titanium alloy. High-performance powder titanium alloys have been applied in key aerospace components abroad, and related research in China has also made good progress. The advent of the new technology of superplastic forming/diffusion connection has provided a broad space for the development of titanium alloys. Superplastic forming/diffusion connection structural parts are used to replace expensive components, machined parts and repaired problematic structures, and reduce the preparation time required for many tools during assembly. Superplastic forming/diffusion connection is expected to have significant effects on future aerospace influences.

The spacecraft operates under extreme conditions such as ultra-high temperature, ultra-low temperature, high vacuum, high stress, and strong corrosion. In addition to relying on optimized structural design, it also depends on the excellent characteristics and functions of the material. For aerospace materials, lightweight and high strength, high-temperature resistance, low-temperature resistance, and corrosion resistance are the main criteria for selecting materials for aerospace products. According to the demand of aerospace products for materials, titanium alloys have formed different development directions in the aerospace field, including high-toughness titanium alloys, high-temperature titanium alloys, low-temperature titanium alloys, cast titanium alloys, and powder titanium alloys. The titanium electrode is used as a consumable electrode in a vacuum consumable arc furnace, and it is smelted into heavy-duty non-ferrous titanium ingots. It is an urgently needed basic material for the development of large aircraft manufacturing. The equipment can produce 12.5 tons of heavy-duty non-ferrous titanium ingots with maximum electrode preparation. It is a heavy-duty non-ferrous complete equipment urgently needed in China's metal industry. In recent years, China has developed rapidly in the field of aerospace, with continuous mass production of new aircraft and many projects under development. It is estimated that the amount of titanium used in these two fields will increase significantly. China has already matured in the use of titanium alloys. Over time, the application of our titanium alloys can also make a leap in the aerospace industry.

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