DFG Project PF 394/5–1

Impulse, Heat and Mass Transport in Argon ESR Refining using Titanium as an Example

The elec­tros­lag remel­ting of tita­ni­um alloys is very deman­ding due to the strong modi­fi­ca­ti­on of the slag sys­tem by deoxi­da­ti­on reac­tions. The­r­e­fo­re, a simu­la­ti­on of the impul­se, mass and heat trans­port must show the pos­si­bi­li­ties and limits of the pro­cess. The neces­sa­ry mate­ri­al data of the slag sys­tem could only be par­ti­al­ly deter­mi­ned in the con­text of this work, so that the cal­cu­la­ti­ons are based on lite­ra­tu­re stu­dies. The model­ling of the remel­ting pro­cess was initi­al­ly car­ri­ed out for steel, as expe­ri­men­tal data and boun­da­ry con­di­ti­ons for vali­da­ti­on could be coll­ec­ted in par­al­lel. The results of the model­ling were vali­da­ted on the basis of the pool depth with expe­ri­men­tal data and show a good agreement.

Based on this model and the exten­si­on of the expe­ri­men­tal equip­ment a trans­fer of model­ling and expe­ri­ment to tita­ni­um mate­ri­als is plan­ned. Of par­ti­cu­lar inte­rest in this respect is the exten­si­on of the model to mate­ri­al trans­port in melt and slag to descri­be kine­tic effects occur­ring in indus­tri­al plants.

Logo DFGThe pro­ject was fun­ded by the Deut­sche For­schungs­ge­mein­schaft (DFG) under the refe­rence num­ber PF 394/5–1.