Titanium rod has good physical and chemical properties, low density, light weight, non-magnetic, high strength, good corrosion resistance, which has good mechanical properties and weldability, Baoji Titanium rods are widely used in chemical equipment, water desalination, ship parts, electroplating industries, titanium is 10 times the general corrosion resistance of stainless steel, and titanium is the body's rejection of relatively low metal, so the medical titanium rod machining parts, widely used in human implants and medical devices with.
Technical requirements: 1, the chemical composition of titanium and titanium alloy bars shall comply with GB / T 3620.1, provisions, when the demand side reinspection, the chemical composition of the tolerances shall comply with the provisions of GB / T 3620.2 of.
2, thermal processing bar diameter or side length and tolerances shall comply with the provisions of one of the table.
3, after thermal processing by car (mill) light bar and cold-rolled, cold drawn rod diameter tolerances shall comply with the provisions of Table II.
4, after thermal processing by car (grinding) roundness light bars should be no greater than half the size of tolerance. 5, the processing state bar is not definite length of 300-6000mm, not length annealed state bar length 300-2000mm, length or double length should not length over the length of the

Medical titanium alloy.

Titanium non-toxic, high light, strength and has excellent biocompatibility, is ideal for medical metal materials, can be used as implanted human implants and the like. Currently, in the medical field is still widely used Ti-6Al-4v ELI alloys. But the latter will precipitate a very small amount of vanadium and aluminum ions, reducing their cell adaptation and possibly cause harm to humans, this issue has already caused widespread concern in the medical profession. Qiang States early in the 20th century the mid-1980s began to develop non-aluminum, non-vanadium, biocompatible titanium alloy, which is used in orthopedic surgery. Japan, the United Kingdom also has done a lot of the research work, and made some new progress. For example, the Japanese have developed a range of α + β titanium alloy having excellent biocompatibility, including Ti-15Zr-4Nb_4ta-0.2Pd, Ti-15Zr-4Nb-aTa-0.2Pd-0.20 ~ 0.05N, Ti-15Sn -4Nb-2Ta-0.2Pd and Ti-15Sn-4nb-2Ta-0.2Pd-0.20, corrosion strength of these alloys, fatigue strength and corrosion resistance are better than Ti-6Al-4v ELI. Compared with the α + β titanium alloy, β titanium alloy having a higher strength almost water, and better performance and notch toughness is more suitable as an implant implanted in the human body. In the US, there are five kinds of β titanium alloys are recommended to the medical field, namely TMZFTM (TI-12Mo- ^ Zr-2Fe), Ti-13Nb-13Zr, Timetal 21SRx (TI-15Mo-2.5Nb-0.2Si), Tiadyne 1610 (Ti-16Nb-9.5Hf) and Ti-15Mo. Estimated that in the near future, such a high strength, low modulus of elasticity and excellent formability and corrosion resistance of titanium House is likely to replace the current widely used in the medical field Ti-6Al-4V ELI alloy [28'32 ].

Density of titanium metal is small as 4.5g / cm3, only 60% of iron, usually aluminum, magnesium, light metals and the like are known, the corresponding titanium, aluminum, magnesium alloy is known as a light alloy. Many countries recognize the importance of titanium alloy, titanium alloy materials have been research and development, and has been applied. Titanium is an important structural metal in the 1950s developed, titanium because of its high specific strength, good corrosion resistance, heat resistance, easy to weld other characteristics have been widely used in various fields, especially high strength, easy welding performance in favor of the golf club head manufacture.

Titanium is a new structural material, it has excellent performance, such as low density (~ 4.5gcm-3), strength and fracture toughness than the ratio, strength and resistance to fatigue crack propagation ability, good low-temperature toughness, corrosion excellent performance, maximum operating temperature titanium alloy for some 550ºC, is expected to reach 700ºC. So it gets increasingly widely used in aviation, aerospace, chemical, shipbuilding and other industrial sectors, is developing rapidly. Light alloy, steel, etc. (σ0.2 / density) versus temperature stronger than titanium than other light metals, steel and nickel alloys, and this advantage can be kept to about 500ºC, so some titanium alloys suitable for manufacture of gas turbine components. Approximately 80% of titanium production for the aviation and aerospace industries. Airframe structural materials such as the US B-1 bomber, the titanium or about 21 percent, mainly for the manufacture of the fuselage, wings, skin and bearing components. Airframe structural materials F-15 fighter, the titanium alloy with a capacity of 7000kg, accounting for about 34% weight of the structure. Boeing 757 aircraft structural parts, titanium or about 5%, with a capacity of 3640 kg. McDonnell Douglas (Mc-Donnell-Dounlas) produced the DC10 aircraft, titanium with a capacity of 5500kg, accounting for more than 10% of the weight of the structure. The amount of titanium in the chemical and general engineering areas: US accounts for about 15% of its production in Europe accounts for about 40%. Due to the excellent corrosion resistance of titanium and its alloys, good mechanical properties, as well as qualified histocompatibility make it for the production of biological materials prosthetic devices.

titanium-based titanium aluminum compound.

Compared with the general titanium alloys, titanium, aluminum, sodium-based compound Ti3Al (α2) and TiAl (γ) intermetallic compounds biggest advantage is a good temperature performance (maximum operating temperatures of 816 and 982 ℃), a strong antioxidant capacity, anti-good creep resistance and light weight (density of only nickel-based superalloy 1/2), these advantages make it the aero engine and aircraft structural parts most competitive materials in the future.
Currently, there are two Ti3Al-based titanium alloy Ti-21Nb-14Al and Ti-24Al-14Nb- # v-0.5Mo start mass production in the United States. Other Ti3Al-based titanium recent development has Ti-24Al-11Nb, Ti25Al-17Nb-1Mo and Ti-25Al-10Nb-3V-1Mo like. TiAl (γ) is in the range of interest of the titanium-based composition of Ti- (46-52) Al- (1-10) M (at.%), Where M is v, Cr, Mn, Nb, Mn, Mo and W, at least one element. Recently, TiAl3 titanium based begun to attract attention, such as Ti-65Al-10Ni alloys

High temperature titanium alloy.

Successfully developed the world's first high-temperature titanium alloy is Ti-6Al-4V, use temperature of 300-350 ℃. Was subsequently developed using a temperature of 400 ℃ IMI550, BT3-1 and other alloys, and the use of a temperature of 450 ~ 500 ℃ of IMI679, IMI685, Ti-6246, Ti-6242 alloy. Has been successfully applied in military and civil aircraft engines in the new high-temperature titanium alloy has a British IMI829, IMI834 alloys; United States of Ti-1100 alloy; Russia BT18Y, BT36 alloy. Table 7 as part of a new national high temperature titanium maximum use temperature [26].
In recent years, the use of foreign fast solidification / powder metallurgy technology, fiber or particle reinforced composite materials developed high temperature titanium alloy titanium alloy as the development direction, so that the use of temperature titanium alloy can be increased to above 650 ℃ [1'27'29'31 ]. American McDonnell Douglas using rapid solidification / powder metallurgy technology Qi successfully developed a high-purity, high density of titanium, its strength at 760 ℃ equivalent strength titanium alloys used in the current room temperature

The physical properties of titanium heat exchanger

Titanium heat exchanger made of high quality titanium tubing. On the physical properties of titanium tube with a light quality, superior mechanical properties, and other advantages. The big strength of titanium, titanium tensile strength of up to 180kg / mm2. Some higher strength steel alloy, but the specific strength of titanium alloy (tensile strength and density ratio) is more than high-quality steel. In addition, titanium has good heat intensity, low-temperature toughness and fracture toughness.