IGF project 19094 N

Influence of heat transfer on the process stability of continuous strip treatment plants

The aim of the rese­arch pro­ject is to achie­ve a bet­ter under­stan­ding of pro­ces­ses in con­ti­nuous plants. Here, a pro­cess win­dow is deve­lo­ped which sets the qua­li­ty-redu­cing phe­no­me­na (strip war­pa­ge, strip shrin­kage) in con­nec­tion with the coo­ling rate or a local heat trans­fer dis­tri­bu­ti­on. This will be imple­men­ted by lin­king the results of the expe­ri­men­tal inves­ti­ga­ti­ons of the AiF pro­ject “Sta­bi­li­ty con­side­ra­ti­ons for metal­lic strips under the influence of nozz­le fields” and the expe­ri­men­tal inves­ti­ga­ti­ons of heat trans­fer as well as the nume­ri­cal model­ling of unde­si­red strip dis­tor­ti­ons, which will be car­ri­ed out in this pro­ject. Due to the trend of heat tre­at­ment of thin­ner strips at hig­her anne­al­ing tem­pe­ra­tures and hig­her coo­ling rates, pro­duc­tion rest­ric­tions occur. The cor­re­la­ti­on to be deter­mi­ned offers a bet­ter under­stan­ding of the cau­ses of strip insta­bi­li­ty and the pos­si­bi­li­ty to increase the pro­duc­ti­vi­ty of heat tre­at­ment equip­ment with respect to new mate­ri­als. The plant con­s­truc­tors have the pos­si­bi­li­ty to use the rese­arch results for the impro­ved design of the plants with regard to new mate­ri­al con­cepts, sin­ce in the rese­arch pro­ject dif­fe­rent con­s­truc­ti­ve influen­cing varia­bles (nozz­le sys­tem, free ungui­ded length) are also con­side­red. The results thus help in the design, the design and the com­mis­sio­ning of con­ti­nuous strip tre­at­ment lines, in par­ti­cu­lar also in the case of modi­fi­ca­ti­on mea­su­res at the coo­ling sec­tion. The fin­dings of this rese­arch pro­ject on the gene­ra­ted pro­cess win­dow will enable plant ope­ra­tors to redu­ce pro­duc­tion down­ti­mes in the plant. At the same time, it is pos­si­ble to bet­ter esti­ma­te pro­cess requirements/restrictions for new mate­ri­al concepts.

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The IGF pro­ject 19094 N of the For­schungs­ver­ei­ni­gung For­schungs­ku­ra­to­ri­um Maschi­nen­bau e.V. was fun­ded by the AiF within the frame­work of the Pro­gram­me for the Pro­mo­ti­on of Indus­tri­al Com­mu­ni­ty Rese­arch (IGF) of the Fede­ral Minis­try of Eco­no­mics and Ener­gy on the basis of a reso­lu­ti­on of the Ger­man Bundestag.

Fur­ther infor­ma­ti­on and the final report can be obtai­ned from the For­schungs­ku­ra­to­ri­um Maschi­nen­bau e.V., Lyo­ner Stra­ße 18, 60528 Frank­furt, Ger­ma­ny or info@fkm-net.de