The basic properties of titanium

The basic properties of titanium

Atomic structure
    Titanium is located in the periodic table ⅣB family, atomic number 22, atomic nuclei by protons and 22 neutrons 20-32 months, extranuclear structure arranged 1S22S22P63S23D24S2. 5x10-13 cm radius of the nucleus.
Physical Properties
    The density of titanium is 4.506-4.516 g / cm (20 ℃), the melting point of 1668 ± 4 ℃, latent heat of fusion 3.7-5.0 kcal / g-atom, the boiling point of 3260 ± 20 ℃, latent heat of vaporization 102.5-112.5 kcal / gram atom, critical temperature 4350 ℃, the critical pressure 1130 atm. Thermal and electrical conductivity properties of titanium is poor, similar or slightly lower than stainless steel, titanium superconducting, titanium superconducting critical temperature 0.38-0.4K. At 25 ℃, the heat capacity of titanium is 0.126 cal / gram atom · degree, enthalpy 1149 cal / g-atom, the entropy of 7.33 cal / g atom · degree, titanium is paramagnetic, permeability of 1.00004.
   titanium material has plasticity, high elongation titanium up to 50-60% reduction of 70-80%, but low intensity, not suitable for structural materials. The presence of impurities in titanium, a great effect on the mechanical properties, in particular interstitial impurities (oxygen, nitrogen, carbon) can greatly increase the strength of titanium, significantly reducing its ductility. Titanium as a structural material has good mechanical properties, that is, by strict control of impurities and where appropriate to add alloying elements to achieve.
Chemical properties
titanium plates for saleat higher temperatures, can react with many elements and compounds. Various elements, according to the occurrence of different reactions and titanium can be divided into four categories:
    The first category: halogen and chalcogen covalent bond with the formation of titanium compound and an ionic bond;
    The second category: transition elements, hydrogen, beryllium, boron family, clan carbon and nitrogen elements and titanium intermetallic compounds and limited solid solution;
    The third category: zirconium, hafnium, vanadium family and chromium family element scandium and titanium to generate an infinite solid solution;
    The fourth category: an inert gas, alkali metals, alkaline earth metals, rare earth elements (except scandium outside), actinium, thorium, which do not react with the titanium or substantially non-reactive.

Titanium Association: titanium raw material prices during the year fell by 25% -30%

Great wisdom AAStocks Newswires November 12 hearing, China Coating Industry Association branch chairman Xie Xiangyun titanium dioxide industry, said on the 12th, this point of view, an adequate supply of titanium raw material prices fell sharply, including titanium ore prices fell 30 percent during the year , slag prices fell 25 percent over the same period.

SMM News: Great Wisdom AAStocks Newswires November 12 hearing, China Coating Industry Association branch chairman Xie Xiangyun titanium dioxide industry, said on the 12th, this point of view, an adequate supply of titanium raw material prices fell sharply, including titanium alloy plate ore price decreased by 30% during the year, prices fell by 25% slag.

Xiexiang Yun said, according to statistical analysis of the relevant marketing agency, in 2013 the domestic market, titanium ore supply about 3.1 million tons, an increase of 6.89%; expected to import 1.9 million tons, down 32.62 percent; expects titanium concentrate table Concept consumption is about 500 million tons, down 4.76%.

In addition, in 2013 the country is expected to have a production capacity of 1 million tons of titanium whole distributor slag, the actual production of about 350,000 tons, representing a decrease of 46.15%; exports about 1.7 million tons, an increase of 17.24%; imports about 20 million tons, an increase of 132.56% . Slag apparent domestic consumption this year is about 530,000 tons, representing a decrease of approximately 20%.

"In short, an adequate supply of raw materials resources, prices in the downstream channel a long time, the rapid decline in prices." Xiexiang Yun said titanium ore prices in January of this year, compared with a decrease of 30%, while prices fell by 25% slag.

Great Wisdom news agency in the 12th by the China Coating Industry Association of titanium dioxide industry branch sponsored the "2013 China titanium wire price dioxide industry will be" informed the above information.

titanium wires and surface cleaning method

titanium wires surface reasonable, mainly referring to the titanium wire surface degreasing and paint,surgical implant titanium remove dirt and other foreign residues. Provide surface clean wool. To avoid contamination and scratches in the thermoforming process. Avoid contamination of fine parts in the heat treatment, welding and other thermal processing step, and to ensure a good surface coating and plating. Available gasoline, acetone,medical grade titanium alcohol and other solvents to clean the surface of titanium wire, but this method is not ideal. Using three ethylene steam degreasing atmosphere, plus inhibitor during degreasing, very good. Sodium hydroxide solution and the like is also useful as a cleaning agent, an alkaline degreasing method.
Chen oil or cleaning,titanium plates for sale parts or wool available water film surface quality inspection method test. The part is immersed in cold water, then put the parts from the water one, if the parts clean surface water film will connect into pieces; if the surface of the oil at the end of divisible, then the water film is not continuous.