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 .