Non Destructive Determination of Mechanical Properties of Hot Rolled Steel Strips

摘要

Automatic prediction of mechanical properties immediately after hot rolling is becoming a standard feature of modern rolling train. Prediction can be interpreted as the non-destructive testing of mechanical properties and it can be used as a substitution of typical destructive tensile test for issuing non specific inspection of the type 2.1 and 2.2. Preparing of test specimen is time and material consuming. Average material loss in testing of coils is about 130 kg and time delay in standard conditions is at least about two days. Although there are several commercially available prediction models available on the market, U. S. Steel Kosice, s.r.o. (USSK) has developed its own prediction system. The main aim of USSK's model is quality control warning as well as a possibility to use predicted values of mechanical properties for issuing non specific inspection documents.