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Forming limits curves (FLC) are used for more than 50 years. Initially proposed for the development of products from the automobile industry in terms of the needs of the area. It is currently being applied in general to the metal forming industry in the production of numerous types of parts, providing predictions of possible faults and / or defects during the stages of the stamping process. The FLC's can predict excessive thinning, wrinkling, stretching and of course, the fracture of the part. The existing metallurgical differences between the two initial processes continuous casting (C.C.) and semi-continuous casting (S.C.C.) result in differences in the final properties obtained for the same route of cold rolling and intermediate annealing of the specified material. Thus, it is essential to study the influence of the initial manufacturing processes CC and SCC with respect to the formability of the sheets. This investigation is based on the, assessment of the FLC's obtained by uniaxial tensile tests proposed by IRSID ("Institut de Recherches de Sidérurgie"), (ε2 < 0, left side of the curve) and Erichsen test (right side of curve. ε2> 0) and the Nakazima test reduced by 60%. The difference between the sheets obtained in both processing routes was evaluated by the following parameters: grain size, tensile strength limits, yield strength (0.2%), elongation (at 50.80 mm), strain hardening coefficient n, resistance K, "earing" test, lifting of the CLC0, Erichsen test and texture where discussed in view of the obtained FLC's for both the two processes of the finished material. The semi-continuous casting process in processed conditions showed better combinations of properties except the formation of "earing" presented at the intermediate stage of processing of the material. Particularly the evaluation of the FLC0 parameter resulted in a strain in the plate plane ε1 19% (ε2 = 0) superior to the sheet obtained by the continuous casting process. A difference of approximately 37% between the IRSID x Nakazima methodologies was also reduced in obtaining the flat deformation for the F.C. process and 31% for the F.S.C. process. However, for other deformation paths; biaxial stretching, uniaxial traction and deep drawing of the results for the continuous casting sheet were superior.

Estudo comparativo da estampabilidade do latão UNS C22000 produzido inicialmente pelo processo de fundição contínua em comparação a fundição semicontínua.