Difference titanium, aluminum

different , but sometimes they are just like some of the products , it is not difficult to identify them carefully observed , particularly titanium magnesium alloy doors and aluminum doors , details about the specific distinction below :
    1, the titanium added to the titanium- based aerospace investment castings alloy other alloying elements called titanium . Titanium has a low density , high strength , corrosion resistance , good process performance , etc., is an ideal aerospace engineering structural materials. Titanium and titanium alloy structure can be divided into heat titanium, titanium alloy , or α , β , and α + β type titanium alloy titanium alloy . Study also include forming technology of titanium alloys , powder metallurgy technology, rapid solidification technology , titanium military and civilian fields.
    2 , aluminum is aluminum made by adding some alloying elements such as aluminum - manganese alloys, aluminum - copper alloys, aluminum - copper - magnesium-based hard alloy, Al - Zn - Mg - Cu based hard alloys. Aluminum has a better than aluminum physical and mechanical properties : easy processing , high durability , wide application , good decorative effect , rich color . Rust-proof titanium bicycle frames aluminum into aluminum, hard aluminum , hard aluminum and other types of various types have their own range , and have their own code , in order for users to choose.
    3 , remains a lightweight aluminum features, but significantly improved mechanical properties . Application of aluminum alloy has the following three aspects : First, as the force components ; Second, as doors, windows , pipes, covers, shells and other materials ; Third, as a decorative and insulating material . After the use of aluminum anodized characteristics can be colored , made of various decorations. Aluminum alloy sheet, the surface profile can be corrosion, ginning , painting, printing and other secondary processing to produce a variety of decorative plates, profiles, as a decorative material.

From a historical perspective titanium widely adopted

Historically, the use of titanium for two main titanium sponge plant reasons: the structure of materials with properties; resistant to corrosion. Because titanium combination of high strength, low specific gravity, good toughness and has good resistance to smallpox labor performance, etc., so you can design excellent performance components. In many or most cases, the titanium can be obtained after annealing these properties, which greatly facilitates manufacturing. Chloride and titanium oxide dielectric, since the passivation layer is formed on the surface, thereby having a very good corrosion resistance, can be the same as the corrosion-resistant metal is set. 
     The rise in the titanium industry's first 20 years, titanium is mainly used in aviation and aerospace industry. Titanium production is unstable in 198t years ago, titanium precision casting from about 1970, sales of titanium in the civilian industrial market began to rise, and relatively stable to 1981 civilian industrial markets titanium consumption of industrial production accounts for about 20 a 30%. Civilian industrial market volatility than small aviation and aerospace industry, which for the stable development of the industry in Chin provided favorable conditions.

                                    

The role of titanium ingot segregation effects Sunrui titanium valve

    Seen from the front , consumable arc melting , the solidification of titanium ingots from the bottom of

the ingot in the order gradually titanium valve to - wide solidification solidification process is in order. As a result,

some of the titanium alloy ingot impurity elements to different parts of the ingot are regularly distributed

, resulting in segregation effects. The principle of effective government is also purified metal smelting

area . It makes titanium ingots alloying elements or impurities in small ingots showing the distribution

area segregation.
    Segregation effect titanium tube occurs with titanium ingot ( or metal sticks ) impurities ( or alloying elements )

equilibrium distribution constant K0 relevant ; segregation effects arising after the gradual solidification

of the cash borrowed from the theory of a titanium ingots left to be addressed on that theory when the order

reported titanium ingot ingot solidification small impurity distribution diagram . The actual status of

titanium ingots similar.
    However , the rapid melting process flexor directional solidification process , the impurity diffusion

between the two phases in the shelter group can not reach equilibrium , so it's not a distribution constant

K0, segregation of some small effect . When titanium melting, segregation should be a purifying effect of

the role , as long as the use of light ingots , you can reduce the effects of impurities.
    Secondary smelting produce consumable content of impurities TA2 pure milled raw material ingot Table

relationship , which is the average of 100 titanium ingots . As can be seen from the table, iron , titanium

ingot and the nitrogen concentration of the titanium sponge has not changed , the purification effect of sky

; silicon, carbon and oxygen increased slightly , and no purification effect, but in the smelting process is

increased impurity contamination volume ; Lee hydrogen chloride purification obvious effect , do not hold

the product in a reduced number of chlorine and level . It also shows that the main role of vacuum

distillation . Both the total amount of impurities from the point of view , slightly lower than the titanium

ingot of titanium sponge impurities, titanium sheet by lowering the melting sponge drink chlorine , and slightly increases

the oxygen and other impurities. In short , a slight increase in the purity of titanium , but it remains in

a substantially horizontal magnitude .