Elements of Quality Analysis in Metallic Materials Production

摘要

The paper presents the main methods of technical-economical analysis of the quality of the metallic material production. The technical - economical analysis of the electric steels' quality can be processed both for the product (electric steel) and for the company (electric steelworks). Both the analysis methods for products (A) and the ones for companies (B) are presented in comparison. There are mainly presented and analyzed a specific analysis models for steels elaboration in Electric Arc Furnace (EAF). The main elements specific to the two categories of analysis methods are: the model of weighted average quality per product coefficient; the model of equivalent average quality per product coefficient; the model of generalized quality coefficient; the model of superior quality products weight. The quality of the steels elaborated in the EAF is a very important parameter. From this point of view, there is the need of analyzing the electric steels' quality in various methods, including by technical-economical ones. The technical - economical analysis of the electric steels' quality can be processed both for the product (electric steel) and for the company (electric steelworks). For the technical - economical analysis for the electric steels' quality, it is used two methods: methods of the analysis for the product's quality (MAPQ); methods of the analysis for the company's (MACQ).