Put a bent wire straightening titanium bar rod sheet plate

Put a bent wire straightening , it must fold to over 180 ° and then released, so that it can just return to the straight state, which is the Chinese idiom spoken overkill. There is a better memory alloy spring , ( talking about here is a steel spring , titanium grade 7‍ steel is an iron -carbon alloy ) spring firmly remember their shape , force a withdrawal , immediately return to their original appearance, only a wide temperature memory spring , so there is not a specific memory alloys transition temperature, which has some special functions . With the memory alloy deformation function at a particular temperature , the temperature can produce a variety of devices, the temperature control circuit can be produced , thermostatic door , temperature of the pipe connection . People have made ​​use of automatic memory alloy fire hydrant - fire temperature, memory alloy deformation, so that the valve opens, water spray fire. Making a connection to connect the mechanical parts , titanium grade 7 bar‍ pipes , air refueling aircraft interface is the use of a shape memory alloy - two oil pipes tacking , the use of electric heating temperature change , the interface memory alloy deformation, so that the interface tight dripping ( oil ) does not leak . Making the area of ​​several hundred square meters of space station antenna from Fair - first made large parabolic antennas or planar , folded into a ball on the ground, with the spacecraft to the space , the temperature changes , since the development of a large area and the original shape. Memory alloys have been to dozens of grade 2 titanium wire‍ current development in the aerospace, military, industrial, agricultural , medical and other fields have a purpose , and the development trend is very impressive, it is grand plans for the benefit of mankind.

Memory alloy is particularly suitable grade gr 7

Memory alloy is particularly suitable for thermo-mechanical and automatic temperature control , automatic opening and closing has made ​​room arm can open the windows are in the sunshine during the day , medical titanium alloy‍ automatically turns off when the night temperature drops. Memory alloy heat engine designs are also a lot that they can be in with a low temperature difference between the two media work , so as to take advantage of industrial cooling water , nuclear reactor heat, ocean thermal and solar power opened up new avenues . Now the problem is widespread efficiency is not high, only 4 % to 6% , to be further improved .

Memory alloys in medical applications is also very compelling. E.g., the bone with the bone plate , not only can two fixing broken bones , and the recovery of the original shape of the compression force is generated , forcing the broken bones surgical implant titanium‍ are joined together . After straightening teeth using dental wire , long clip ligation of cerebral aneurysms and vas deferens , with the support plate straightening the spine , are implanted in the human body temperature by the action starts, thrombus filter is also a new product memory alloy . After being straightened filter implanted vein , will be gradually restored into a network , thereby preventing clot 95% flow to the heart and lungs.

Artificial heart is a more complex structure of the organ , muscle fibers of the elastic memory titanium sheet‍ alloy thin film made ​​of ventricular cooperate to mimic ventricular contraction . Now water is pumped been successful.

Development of titanium frames grade titanium 7

Titanium is a metallic chemical element , because the refining process is not easy, and less expensive titanium material production , it is only used in the early titanium aerospace science , marine science and other medical grade titanium‍ high-tech science and energy development . And daily necessities are to begin in 1965 applied to the titanium material .

The first titanium frame is in九八○年someone invented the " rivet -like titanium frames " titanium welding is a very difficult material, there is no better way to do early connection handling , use rivets type of way to put it nailed together. While in 1981 , grade 3 titanium‍ the plant began outside coated with a layer of nickel titanium material to facilitate welding. An increasingly competitive market and month of the new manufacturing methods , 1982 Day MARUMAM company pioneered the titanium sheet‍ first payment in full titanium metal frames around the world ; 1984 also has factories launched nickel-plated titanium frames , there is a big price difference .

Properties and Applications grade gr 4

Properties and Applications of Titanium graphite mold castings

Titanium graphite mold casting Titanium bars‍ has a high thermal conductivity, is used as a mold for casting a good cooling effect. Since the cooling quickly, it can be removed immediately after having cooled casting characteristics. Past non-ferrous metals commonly used to manufacture the production of non-ferrous metal ingots and then bar, pipe, wire or profiles drawn by melt casting and rolling or extrusion methods. In recent years, domestic and being promoted by the state of the molten metal directly continuous (or semi-continuous) bar or tube manufacturing and other advanced production methods. medical grade titanium alloy‍ Domestic in copper, copper alloy, aluminum alloy, also started using this method. Artificial graphite as a non-ferrous metal or semi-continuous casting mold for continuous casting is considered to be the most suitable material. According to some factory production proved, because the titanium graphite mold casting has thermal conductivity, good self-lubricating properties and other characteristics (thermal conductivity determines the solidification rate of speed metal or alloy), not only the casting speed, and because of the size of the ingot precision surface smooth, uniform crystal structure, can be directly processed under the procedures. This not only greatly improve the yield, reduce scrap loss, grade 2 titanium wire‍ and the product quality is also greatly improved.

Welding technology research grade titanium 2

Welding technology research titanium plates and stainless steel mesh diffusion

Diffusion welding titanium plates and stainless steel Medical titanium bar‍ mesh using solid phase diffusion welding technology. In solid phase diffusion bonding is lower than the melting temperature of the substrate by a certain pressure, so that the material surface contact each other to achieve the local plastic deformation of close contact and the diffusion of atoms through the surface layer

And bonding to form a metallurgical connection process. This method does not cause macroscopic deformation of parts, melting or relative movement. Available with or without the proliferation of auxiliary material (ie, interlayer material) between + two mating surfaces. Diffusion bonding process can be divided into three phases: the first phase is in physical contact; The second stage is the atomic interdiffusion between titanium bar stock‍ the contact interface to form a strong bonding layer; volume of the third stage is gradually formed in the contact portion in the direction of the bonding layer development, creating a reliable diffusion welding titanium plate and welded joints of stainless steel mesh, taking into account the welding materials and propellant compatibility, combined with the ease of titanium and stainless steel plates welded mesh actual production, should try to avoid using diffusion auxiliary materials, namely by direct diffusion titanium alloy plate‍ welding technology of titanium plates and stainless steel mesh.

Titanium has good alkali titanium bar

Titanium has good alkali solution in the majority of the corrosion resistance, the corrosion rate of the solution with increasing concentration and temperature, aerobic, ammonia or an alkali solution in the presence of carbon dioxide, medical titanium bar‍ will accelerate the corrosion of titanium, containing peroxide the alkaline solution of hydrogen, the titanium corrosion is poor. But in the sodium hydroxide solution also has strong corrosion resistance. Such as titanium at 130 ℃, 73% sodium hydroxide solution in the corrosion rate of only 0.18mm / a, titanium and other metals, the difference is that it does not cause stress corrosion cracking in sodium hydroxide solution, but long-term exposure may hydrogen embrittlement. Therefore, the use of titanium and other temperature caustic titanium bars for sale‍ concentration of the alkali solution should be ≤93.33 ℃. Table 2-7 summarizes the corrosion resistance of titanium in a variety of environments.

Not difficult to see from the above, titanium is the most corrosion resistant chemical industry, the most promising corrosion resistant material, is particularly worth noting that it is dynamic and static seawater and marine atmosphere are completely corrosion resistant, medical grade titanium alloy‍ even more than some of the resistance corrosion materials.

Titanium is mainly used for the production titanium bar

Relevant data show that Titanium is a metallic element , gray, can burn in nitrogen , high melting point . Titanium and titanium -based alloy is a new structural materials , mainly for the aerospace industry and the maritime industry. titanium grade 7‍ is mainly used for the production of aircraft engine compressor components , but also for structural parts manufacturing rockets, missiles and high-speed aircraft. The mid- 1960s , titanium and its alloys have applications in general industry , mainly for the production of electrolytic electrode industry, power plant condensers , oil refining and desalination heater and environmental pollution control devices. In addition , seven hundred twenty-five built 10,000 tons of titanium sponge project , using the world's most advanced magnesium reduction - distillation - Electrolysis titanium grade 7 bar‍ joint production process to achieve a closed process , auxiliary materials recycling , environmental compliance now produce qualified titanium sponge . As an important part of the titanium industry chain , currently , seven hundred twenty-five 5000 tons of titanium alloy sheet and strip and sheet and strip products have been approved by the National Development and Reform Commission annual project is actively under construction. Complete industrial chain in Luoyang City, titanium formed with a strong stability and competitiveness of industry , technology and scale have reached the international advanced level , to promote the significance of Henan great efforts to develop the next titanium industry .

Experts predict that in the next three to five years , Luoyang existing titanium industry will be based on the formation of titanium semi-finished titanium products and titanium casting equipment three industrial clusters. By then, these industrial clusters will bring annual sales income of 5.0 billion Luoyang this titanium industrial base.‍