The role of titanium ingot segregation effects

Seen from the front , consumable arc melting , the solidification of titanium ingots from the bottom of the ingot in the order gradually 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 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 Titanium Casting Manufacturer 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 titanium casting factory 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, 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 .