PREDICTION METHOD FOR FORMING LIMIT DIAGRAM OF HIGH CHROME FERRITE STAINLESS STEEL

摘要

A method for estimating the forming limit diagram of high chrome ferritic stainless steel is provided to predict the actual yield in press-forming various materials and to reduce the failure rate. A method for estimating the forming limit diagram of high chrome ferritic stainless steel comprises a step of measuring nickel(Ni) equivalent of alloy component, a step of saving plane transformation region(FLD0) of forming limit diagram by substituting the thickness of material and the measured nickel equivalent for the equation, FLD0 = 21.5 + (2.57* thickness) - (0.98* nickel equivalent), and a step of predicting forming limit diagram by using the FLD0 and one or more forming limit diagram values measured while varying the nickel equivalent and the thickness.