Community Research and Development Information Service - CORDIS


Strand-shell growth is an important feature for a trouble-free continous casting process. Underneath the mould, the dimensional stability of the strand is determined by the strength of the already solidified shell. The strand shell has to feature an adequate bearing capacity and stability to prevent a lateral flow-out of the liquid strand core. The research project under consideration presents an exploring coil system, which operates according to the eddy-current principle and allows a sectorial measurement of the shell thickness. The first part of the report discusses the physical fundamentals of the eddy-current method. The second part deals with the development of theoretical models. Calculations of the complex measuring voltage at shell thickness variations are made on the basis of these models with the aid of computer programs. The programs allow the calculation, furthermore, of the impact of some of the variables involved. The third part deals with laboratory experiments on test specimens. The results are discussed and compared with the calculations. The last part of the report deals with the performance of service tests.

Additional information

Authors: KRANNICH S, Betriebsforschungsinstitut des VDEh, Düsseldorf (DE);WILHELM H G, Betriebsforschungsinstitut des VDEh, Düsseldorf (DE);WOESTE W, Betriebsforschungsinstitut des VDEh, Düsseldorf (DE)
Bibliographic Reference: EUR 12138 DE (1988) MF, 134 pp., ECU 8, blow-up copy ECU 17.50
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